./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.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/mutex-meet-nonrel/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.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-eb4cb34-m [2024-06-21 20:58:08,692 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 20:58:08,757 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 20:58:08,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 20:58:08,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 20:58:08,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 20:58:08,786 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 20:58:08,786 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 20:58:08,787 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 20:58:08,790 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 20:58:08,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 20:58:08,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 20:58:08,791 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 20:58:08,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 20:58:08,793 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 20:58:08,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 20:58:08,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 20:58:08,793 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 20:58:08,794 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 20:58:08,794 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 20:58:08,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 20:58:08,794 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 20:58:08,795 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 20:58:08,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 20:58:08,795 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 20:58:08,795 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 20:58:08,795 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 20:58:08,796 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 20:58:08,796 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 20:58:08,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 20:58:08,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 20:58:08,797 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 20:58:08,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:58:08,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 20:58:08,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 20:58:08,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 20:58:08,798 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 20:58:08,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 20:58:08,799 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 20:58:08,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 20:58:08,799 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 20:58:08,799 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 20:58:08,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 20:58:08,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 20:58:09,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 20:58:09,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 20:58:09,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 20:58:09,073 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 20:58:09,073 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 20:58:09,074 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.yml/witness.yml [2024-06-21 20:58:09,184 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 20:58:09,184 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 20:58:09,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-21 20:58:10,286 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 20:58:10,525 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 20:58:10,526 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-21 20:58:10,577 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed5a6427/1fb8c604f1d74672922bf8bb286bf35e/FLAG5920a24f3 [2024-06-21 20:58:10,595 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eed5a6427/1fb8c604f1d74672922bf8bb286bf35e [2024-06-21 20:58:10,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 20:58:10,606 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 20:58:10,621 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 20:58:10,621 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 20:58:10,625 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 20:58:10,626 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:58:09" (1/2) ... [2024-06-21 20:58:10,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb0c059 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:58:10, skipping insertion in model container [2024-06-21 20:58:10,627 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:58:09" (1/2) ... [2024-06-21 20:58:10,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f996401 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 08:58:10, skipping insertion in model container [2024-06-21 20:58:10,628 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:58:10" (2/2) ... [2024-06-21 20:58:10,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb0c059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:10, skipping insertion in model container [2024-06-21 20:58:10,629 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 08:58:10" (2/2) ... [2024-06-21 20:58:10,629 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 20:58:10,684 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 20:58:10,686 INFO L97 edCorrectnessWitness]: Location invariant before [L820-L820] ((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-21 20:58:10,686 INFO L97 edCorrectnessWitness]: Location invariant before [L821-L821] ((((((((((((((((! multithreaded || z$r_buff0_thd2 == (_Bool)0) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)) && (z$w_buff0 == 0 || z$w_buff0 == 1)) && (z$w_buff1 == 0 || z$w_buff1 == 1)))) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-21 20:58:10,686 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 20:58:10,686 INFO L106 edCorrectnessWitness]: ghost_update [L818-L818] multithreaded = 1; [2024-06-21 20:58:10,724 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 20:58:11,026 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:58:11,035 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 20:58:11,150 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 20:58:11,177 INFO L206 MainTranslator]: Completed translation [2024-06-21 20:58:11,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:11 WrapperNode [2024-06-21 20:58:11,178 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 20:58:11,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 20:58:11,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 20:58:11,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 20:58:11,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:11" (1/1) ... [2024-06-21 20:58:11,195 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:11" (1/1) ... [2024-06-21 20:58:11,219 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 115 [2024-06-21 20:58:11,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 20:58:11,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 20:58:11,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 20:58:11,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 20:58:11,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:11" (1/1) ... [2024-06-21 20:58:11,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:11" (1/1) ... [2024-06-21 20:58:11,234 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:11" (1/1) ... [2024-06-21 20:58:11,246 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]. [2024-06-21 20:58:11,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:11" (1/1) ... [2024-06-21 20:58:11,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:11" (1/1) ... [2024-06-21 20:58:11,254 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:11" (1/1) ... [2024-06-21 20:58:11,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:11" (1/1) ... [2024-06-21 20:58:11,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:11" (1/1) ... [2024-06-21 20:58:11,259 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:11" (1/1) ... [2024-06-21 20:58:11,261 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 20:58:11,261 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 20:58:11,262 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 20:58:11,262 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 20:58:11,262 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:11" (1/1) ... [2024-06-21 20:58:11,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 20:58:11,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 20:58:11,291 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) [2024-06-21 20:58:11,319 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 [2024-06-21 20:58:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 20:58:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 20:58:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 20:58:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 20:58:11,341 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 20:58:11,341 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 20:58:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 20:58:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 20:58:11,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 20:58:11,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 20:58:11,343 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 20:58:11,435 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 20:58:11,437 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 20:58:11,690 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 20:58:11,691 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 20:58:11,882 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 20:58:11,882 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 20:58:11,884 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:58:11 BoogieIcfgContainer [2024-06-21 20:58:11,885 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 20:58:11,887 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 20:58:11,887 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 20:58:11,890 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 20:58:11,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 08:58:09" (1/4) ... [2024-06-21 20:58:11,890 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca0627 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 08:58:11, skipping insertion in model container [2024-06-21 20:58:11,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 08:58:10" (2/4) ... [2024-06-21 20:58:11,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca0627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 08:58:11, skipping insertion in model container [2024-06-21 20:58:11,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 08:58:11" (3/4) ... [2024-06-21 20:58:11,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca0627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 08:58:11, skipping insertion in model container [2024-06-21 20:58:11,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 08:58:11" (4/4) ... [2024-06-21 20:58:11,896 INFO L112 eAbstractionObserver]: Analyzing ICFG mix034_power.oepc_power.opt_pso.oepc_rmo.oepc_rmo.opt_tso.oepc.i [2024-06-21 20:58:11,909 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 20:58:11,909 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 20:58:11,909 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 20:58:11,942 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 20:58:11,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-21 20:58:12,005 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-21 20:58:12,006 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 20:58:12,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 20:58:12,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-21 20:58:12,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-21 20:58:12,023 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 20:58:12,029 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;@150a2ea7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 20:58:12,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 20:58:12,032 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 20:58:12,032 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 20:58:12,032 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 20:58:12,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:12,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 20:58:12,033 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:12,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:12,037 INFO L85 PathProgramCache]: Analyzing trace with hash 332681745, now seen corresponding path program 1 times [2024-06-21 20:58:12,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:12,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462028228] [2024-06-21 20:58:12,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:12,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:12,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:12,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:12,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462028228] [2024-06-21 20:58:12,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462028228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:12,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:12,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 20:58:12,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340552458] [2024-06-21 20:58:12,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:12,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 20:58:12,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:12,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 20:58:12,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 20:58:12,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-21 20:58:12,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:12,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:12,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-21 20:58:12,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:12,974 INFO L124 PetriNetUnfolderBase]: 153/293 cut-off events. [2024-06-21 20:58:12,974 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-21 20:58:12,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 293 events. 153/293 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1091 event pairs, 89 based on Foata normal form. 1/282 useless extension candidates. Maximal degree in co-relation 575. Up to 272 conditions per place. [2024-06-21 20:58:12,979 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-21 20:58:12,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-21 20:58:12,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 20:58:12,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 20:58:12,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-06-21 20:58:12,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-06-21 20:58:12,990 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 56 transitions. [2024-06-21 20:58:12,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-21 20:58:12,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 20:58:12,994 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-21 20:58:12,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-21 20:58:12,998 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-21 20:58:12,998 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-21 20:58:12,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:12,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:12,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:12,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 20:58:12,999 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:13,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:13,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1879593136, now seen corresponding path program 1 times [2024-06-21 20:58:13,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:13,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280961729] [2024-06-21 20:58:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:13,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:13,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:13,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:13,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280961729] [2024-06-21 20:58:13,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280961729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:13,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:13,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 20:58:13,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560939177] [2024-06-21 20:58:13,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:13,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 20:58:13,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:13,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 20:58:13,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-21 20:58:13,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-21 20:58:13,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:13,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:13,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-21 20:58:13,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:13,515 INFO L124 PetriNetUnfolderBase]: 150/293 cut-off events. [2024-06-21 20:58:13,516 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-06-21 20:58:13,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 293 events. 150/293 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1077 event pairs, 68 based on Foata normal form. 2/291 useless extension candidates. Maximal degree in co-relation 649. Up to 258 conditions per place. [2024-06-21 20:58:13,518 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-21 20:58:13,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 157 flow [2024-06-21 20:58:13,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 20:58:13,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 20:58:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-06-21 20:58:13,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-21 20:58:13,520 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 72 transitions. [2024-06-21 20:58:13,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 157 flow [2024-06-21 20:58:13,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 20:58:13,521 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-21 20:58:13,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-21 20:58:13,522 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-21 20:58:13,522 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-21 20:58:13,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:13,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:13,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:13,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 20:58:13,523 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:13,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:13,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1892209841, now seen corresponding path program 1 times [2024-06-21 20:58:13,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:13,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888247603] [2024-06-21 20:58:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:13,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:14,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:14,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888247603] [2024-06-21 20:58:14,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888247603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:14,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:14,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:58:14,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017380421] [2024-06-21 20:58:14,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:14,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:58:14,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:14,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:58:14,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:58:14,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 20:58:14,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:14,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:14,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 20:58:14,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:14,269 INFO L124 PetriNetUnfolderBase]: 180/340 cut-off events. [2024-06-21 20:58:14,269 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-06-21 20:58:14,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 340 events. 180/340 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1248 event pairs, 52 based on Foata normal form. 2/336 useless extension candidates. Maximal degree in co-relation 838. Up to 291 conditions per place. [2024-06-21 20:58:14,272 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 34 selfloop transitions, 9 changer transitions 0/47 dead transitions. [2024-06-21 20:58:14,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 47 transitions, 238 flow [2024-06-21 20:58:14,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:58:14,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:58:14,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-21 20:58:14,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2024-06-21 20:58:14,273 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 6 states and 99 transitions. [2024-06-21 20:58:14,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 47 transitions, 238 flow [2024-06-21 20:58:14,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 226 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-21 20:58:14,275 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 134 flow [2024-06-21 20:58:14,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-21 20:58:14,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-21 20:58:14,276 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 134 flow [2024-06-21 20:58:14,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:14,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:14,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:14,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 20:58:14,277 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:14,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:14,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1968028297, now seen corresponding path program 1 times [2024-06-21 20:58:14,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:14,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990725530] [2024-06-21 20:58:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:14,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:14,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:14,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990725530] [2024-06-21 20:58:14,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990725530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:14,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:15,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:58:15,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809028989] [2024-06-21 20:58:15,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:15,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:58:15,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:15,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:58:15,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:58:15,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-21 20:58:15,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 134 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:15,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:15,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-21 20:58:15,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:15,232 INFO L124 PetriNetUnfolderBase]: 176/330 cut-off events. [2024-06-21 20:58:15,232 INFO L125 PetriNetUnfolderBase]: For 345/345 co-relation queries the response was YES. [2024-06-21 20:58:15,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 330 events. 176/330 cut-off events. For 345/345 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1165 event pairs, 30 based on Foata normal form. 4/326 useless extension candidates. Maximal degree in co-relation 911. Up to 265 conditions per place. [2024-06-21 20:58:15,236 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 34 selfloop transitions, 10 changer transitions 0/48 dead transitions. [2024-06-21 20:58:15,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 258 flow [2024-06-21 20:58:15,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:58:15,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:58:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-21 20:58:15,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023041474654378 [2024-06-21 20:58:15,240 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 134 flow. Second operand 7 states and 109 transitions. [2024-06-21 20:58:15,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 258 flow [2024-06-21 20:58:15,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 241 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 20:58:15,244 INFO L231 Difference]: Finished difference. Result has 42 places, 30 transitions, 133 flow [2024-06-21 20:58:15,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=133, PETRI_PLACES=42, PETRI_TRANSITIONS=30} [2024-06-21 20:58:15,245 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-06-21 20:58:15,246 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 30 transitions, 133 flow [2024-06-21 20:58:15,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:15,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:15,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:15,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 20:58:15,246 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:15,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:15,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1341926479, now seen corresponding path program 1 times [2024-06-21 20:58:15,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:15,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277191409] [2024-06-21 20:58:15,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:15,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:15,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:15,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:15,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277191409] [2024-06-21 20:58:15,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277191409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:15,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:15,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 20:58:15,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053514866] [2024-06-21 20:58:15,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:15,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 20:58:15,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:15,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 20:58:15,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-21 20:58:15,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:15,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 30 transitions, 133 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:15,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:15,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:15,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:15,887 INFO L124 PetriNetUnfolderBase]: 174/327 cut-off events. [2024-06-21 20:58:15,888 INFO L125 PetriNetUnfolderBase]: For 461/461 co-relation queries the response was YES. [2024-06-21 20:58:15,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 968 conditions, 327 events. 174/327 cut-off events. For 461/461 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1153 event pairs, 47 based on Foata normal form. 1/326 useless extension candidates. Maximal degree in co-relation 950. Up to 304 conditions per place. [2024-06-21 20:58:15,890 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 28 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2024-06-21 20:58:15,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 37 transitions, 219 flow [2024-06-21 20:58:15,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 20:58:15,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 20:58:15,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-06-21 20:58:15,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4129032258064516 [2024-06-21 20:58:15,891 INFO L175 Difference]: Start difference. First operand has 42 places, 30 transitions, 133 flow. Second operand 5 states and 64 transitions. [2024-06-21 20:58:15,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 37 transitions, 219 flow [2024-06-21 20:58:15,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 195 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 20:58:15,893 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 136 flow [2024-06-21 20:58:15,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=136, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-06-21 20:58:15,893 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-06-21 20:58:15,894 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 136 flow [2024-06-21 20:58:15,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:15,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:15,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:15,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 20:58:15,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:15,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:15,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1349951301, now seen corresponding path program 1 times [2024-06-21 20:58:15,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:15,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580911584] [2024-06-21 20:58:15,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:15,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:16,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:16,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:16,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580911584] [2024-06-21 20:58:16,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580911584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:16,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:16,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:58:16,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781830444] [2024-06-21 20:58:16,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:16,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:58:16,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:16,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:58:16,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:58:16,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:16,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 136 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:16,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:16,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:16,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:16,623 INFO L124 PetriNetUnfolderBase]: 199/357 cut-off events. [2024-06-21 20:58:16,637 INFO L125 PetriNetUnfolderBase]: For 718/718 co-relation queries the response was YES. [2024-06-21 20:58:16,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1121 conditions, 357 events. 199/357 cut-off events. For 718/718 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1219 event pairs, 55 based on Foata normal form. 1/356 useless extension candidates. Maximal degree in co-relation 1101. Up to 343 conditions per place. [2024-06-21 20:58:16,640 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 30 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-21 20:58:16,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 234 flow [2024-06-21 20:58:16,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:58:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:58:16,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-21 20:58:16,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 20:58:16,642 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 136 flow. Second operand 6 states and 69 transitions. [2024-06-21 20:58:16,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 234 flow [2024-06-21 20:58:16,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 223 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 20:58:16,645 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 158 flow [2024-06-21 20:58:16,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-21 20:58:16,647 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-21 20:58:16,648 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 158 flow [2024-06-21 20:58:16,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:16,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:16,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:16,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 20:58:16,648 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:16,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:16,649 INFO L85 PathProgramCache]: Analyzing trace with hash -2114279576, now seen corresponding path program 1 times [2024-06-21 20:58:16,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:16,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121851245] [2024-06-21 20:58:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:16,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:16,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:17,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:17,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121851245] [2024-06-21 20:58:17,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121851245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:17,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:17,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:58:17,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81835986] [2024-06-21 20:58:17,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:17,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:58:17,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:17,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:58:17,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:58:17,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:17,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:17,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:17,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:17,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:17,349 INFO L124 PetriNetUnfolderBase]: 188/348 cut-off events. [2024-06-21 20:58:17,353 INFO L125 PetriNetUnfolderBase]: For 991/991 co-relation queries the response was YES. [2024-06-21 20:58:17,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 348 events. 188/348 cut-off events. For 991/991 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1237 event pairs, 53 based on Foata normal form. 1/347 useless extension candidates. Maximal degree in co-relation 1142. Up to 304 conditions per place. [2024-06-21 20:58:17,355 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 33 selfloop transitions, 11 changer transitions 0/48 dead transitions. [2024-06-21 20:58:17,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 298 flow [2024-06-21 20:58:17,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:58:17,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:58:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2024-06-21 20:58:17,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 20:58:17,357 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 158 flow. Second operand 6 states and 80 transitions. [2024-06-21 20:58:17,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 298 flow [2024-06-21 20:58:17,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 48 transitions, 281 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 20:58:17,359 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 188 flow [2024-06-21 20:58:17,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2024-06-21 20:58:17,359 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-21 20:58:17,359 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 188 flow [2024-06-21 20:58:17,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:17,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:17,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:17,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 20:58:17,360 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:17,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:17,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1931450704, now seen corresponding path program 2 times [2024-06-21 20:58:17,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:17,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126953041] [2024-06-21 20:58:17,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:17,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:17,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:17,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:17,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126953041] [2024-06-21 20:58:17,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126953041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:17,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:17,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 20:58:17,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728844376] [2024-06-21 20:58:17,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:17,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 20:58:17,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:17,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 20:58:17,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 20:58:17,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:17,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 188 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:17,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:17,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:17,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:18,001 INFO L124 PetriNetUnfolderBase]: 186/345 cut-off events. [2024-06-21 20:58:18,001 INFO L125 PetriNetUnfolderBase]: For 1268/1268 co-relation queries the response was YES. [2024-06-21 20:58:18,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1228 conditions, 345 events. 186/345 cut-off events. For 1268/1268 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1219 event pairs, 52 based on Foata normal form. 1/344 useless extension candidates. Maximal degree in co-relation 1206. Up to 314 conditions per place. [2024-06-21 20:58:18,003 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 32 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-21 20:58:18,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 282 flow [2024-06-21 20:58:18,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 20:58:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 20:58:18,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 74 transitions. [2024-06-21 20:58:18,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-21 20:58:18,005 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 188 flow. Second operand 6 states and 74 transitions. [2024-06-21 20:58:18,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 282 flow [2024-06-21 20:58:18,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 268 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-21 20:58:18,007 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 195 flow [2024-06-21 20:58:18,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=195, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2024-06-21 20:58:18,007 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-06-21 20:58:18,008 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 195 flow [2024-06-21 20:58:18,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:18,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:18,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:18,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 20:58:18,008 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:18,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:18,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1101183470, now seen corresponding path program 1 times [2024-06-21 20:58:18,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:18,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355658571] [2024-06-21 20:58:18,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:18,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:18,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:18,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355658571] [2024-06-21 20:58:18,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355658571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:18,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:18,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:58:18,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771533607] [2024-06-21 20:58:18,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:18,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:58:18,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:18,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:58:18,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:58:18,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:18,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 195 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:18,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:18,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:18,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:18,823 INFO L124 PetriNetUnfolderBase]: 194/350 cut-off events. [2024-06-21 20:58:18,823 INFO L125 PetriNetUnfolderBase]: For 1472/1472 co-relation queries the response was YES. [2024-06-21 20:58:18,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 350 events. 194/350 cut-off events. For 1472/1472 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1179 event pairs, 51 based on Foata normal form. 3/351 useless extension candidates. Maximal degree in co-relation 1242. Up to 327 conditions per place. [2024-06-21 20:58:18,825 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2024-06-21 20:58:18,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 49 transitions, 319 flow [2024-06-21 20:58:18,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:58:18,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:58:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-21 20:58:18,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-21 20:58:18,826 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 195 flow. Second operand 7 states and 80 transitions. [2024-06-21 20:58:18,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 49 transitions, 319 flow [2024-06-21 20:58:18,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 295 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-21 20:58:18,829 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 210 flow [2024-06-21 20:58:18,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=210, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2024-06-21 20:58:18,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-06-21 20:58:18,829 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 210 flow [2024-06-21 20:58:18,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:18,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:18,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:18,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 20:58:18,830 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:18,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:18,830 INFO L85 PathProgramCache]: Analyzing trace with hash -400432360, now seen corresponding path program 1 times [2024-06-21 20:58:18,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:18,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459290294] [2024-06-21 20:58:18,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:18,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:19,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:19,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:19,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459290294] [2024-06-21 20:58:19,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459290294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:19,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:19,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:58:19,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009435136] [2024-06-21 20:58:19,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:19,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:58:19,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:19,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:58:19,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:58:19,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:19,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 210 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:19,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:19,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:19,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:19,659 INFO L124 PetriNetUnfolderBase]: 183/341 cut-off events. [2024-06-21 20:58:19,660 INFO L125 PetriNetUnfolderBase]: For 1715/1715 co-relation queries the response was YES. [2024-06-21 20:58:19,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1290 conditions, 341 events. 183/341 cut-off events. For 1715/1715 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1182 event pairs, 48 based on Foata normal form. 1/340 useless extension candidates. Maximal degree in co-relation 1266. Up to 295 conditions per place. [2024-06-21 20:58:19,662 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 41 selfloop transitions, 10 changer transitions 0/55 dead transitions. [2024-06-21 20:58:19,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 354 flow [2024-06-21 20:58:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:58:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:58:19,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-21 20:58:19,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-21 20:58:19,663 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 210 flow. Second operand 7 states and 90 transitions. [2024-06-21 20:58:19,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 354 flow [2024-06-21 20:58:19,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 331 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 20:58:19,665 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 226 flow [2024-06-21 20:58:19,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=226, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-21 20:58:19,666 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-21 20:58:19,666 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 226 flow [2024-06-21 20:58:19,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:19,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:19,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:19,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 20:58:19,667 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:19,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:19,667 INFO L85 PathProgramCache]: Analyzing trace with hash -229725094, now seen corresponding path program 1 times [2024-06-21 20:58:19,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:19,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377495004] [2024-06-21 20:58:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:19,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:20,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:20,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377495004] [2024-06-21 20:58:20,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377495004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:20,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:20,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:58:20,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106160766] [2024-06-21 20:58:20,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:20,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:58:20,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:20,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:58:20,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:58:20,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:20,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 226 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:20,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:20,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:20,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:20,345 INFO L124 PetriNetUnfolderBase]: 200/360 cut-off events. [2024-06-21 20:58:20,346 INFO L125 PetriNetUnfolderBase]: For 1990/1990 co-relation queries the response was YES. [2024-06-21 20:58:20,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1415 conditions, 360 events. 200/360 cut-off events. For 1990/1990 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1211 event pairs, 51 based on Foata normal form. 1/359 useless extension candidates. Maximal degree in co-relation 1390. Up to 322 conditions per place. [2024-06-21 20:58:20,348 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 40 selfloop transitions, 15 changer transitions 0/57 dead transitions. [2024-06-21 20:58:20,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 398 flow [2024-06-21 20:58:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:58:20,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:58:20,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-21 20:58:20,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39631336405529954 [2024-06-21 20:58:20,350 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 226 flow. Second operand 7 states and 86 transitions. [2024-06-21 20:58:20,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 398 flow [2024-06-21 20:58:20,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 375 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 20:58:20,353 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 258 flow [2024-06-21 20:58:20,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=258, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-21 20:58:20,354 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2024-06-21 20:58:20,355 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 258 flow [2024-06-21 20:58:20,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:20,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:20,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:20,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 20:58:20,355 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:20,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash -400427710, now seen corresponding path program 2 times [2024-06-21 20:58:20,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:20,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200117636] [2024-06-21 20:58:20,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:20,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:20,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:20,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200117636] [2024-06-21 20:58:20,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200117636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:20,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:20,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:58:20,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203357230] [2024-06-21 20:58:20,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:20,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:58:20,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:20,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:58:20,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:58:20,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:20,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 258 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:20,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:20,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:20,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:21,135 INFO L124 PetriNetUnfolderBase]: 191/353 cut-off events. [2024-06-21 20:58:21,136 INFO L125 PetriNetUnfolderBase]: For 2474/2474 co-relation queries the response was YES. [2024-06-21 20:58:21,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 353 events. 191/353 cut-off events. For 2474/2474 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1218 event pairs, 48 based on Foata normal form. 1/352 useless extension candidates. Maximal degree in co-relation 1433. Up to 289 conditions per place. [2024-06-21 20:58:21,138 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 38 selfloop transitions, 17 changer transitions 0/61 dead transitions. [2024-06-21 20:58:21,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 61 transitions, 444 flow [2024-06-21 20:58:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:58:21,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:58:21,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-21 20:58:21,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423963133640553 [2024-06-21 20:58:21,139 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 258 flow. Second operand 7 states and 92 transitions. [2024-06-21 20:58:21,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 61 transitions, 444 flow [2024-06-21 20:58:21,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 430 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 20:58:21,143 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 315 flow [2024-06-21 20:58:21,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=315, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-06-21 20:58:21,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 30 predicate places. [2024-06-21 20:58:21,143 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 315 flow [2024-06-21 20:58:21,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:21,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:21,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:21,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 20:58:21,144 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:21,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:21,145 INFO L85 PathProgramCache]: Analyzing trace with hash -283233296, now seen corresponding path program 2 times [2024-06-21 20:58:21,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:21,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409417432] [2024-06-21 20:58:21,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:21,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:21,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:21,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:21,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409417432] [2024-06-21 20:58:21,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409417432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:21,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:21,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:58:21,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731363636] [2024-06-21 20:58:21,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:21,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:58:21,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:21,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:58:21,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:58:21,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:21,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 315 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:21,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:21,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:21,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:21,873 INFO L124 PetriNetUnfolderBase]: 206/370 cut-off events. [2024-06-21 20:58:21,888 INFO L125 PetriNetUnfolderBase]: For 2936/2936 co-relation queries the response was YES. [2024-06-21 20:58:21,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1627 conditions, 370 events. 206/370 cut-off events. For 2936/2936 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1263 event pairs, 49 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1599. Up to 353 conditions per place. [2024-06-21 20:58:21,890 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 47 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-21 20:58:21,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 59 transitions, 457 flow [2024-06-21 20:58:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:58:21,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:58:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-21 20:58:21,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-21 20:58:21,891 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 315 flow. Second operand 7 states and 78 transitions. [2024-06-21 20:58:21,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 59 transitions, 457 flow [2024-06-21 20:58:21,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 435 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-21 20:58:21,894 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 334 flow [2024-06-21 20:58:21,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=334, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2024-06-21 20:58:21,895 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-06-21 20:58:21,895 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 334 flow [2024-06-21 20:58:21,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:21,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:21,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:21,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 20:58:21,895 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:21,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:21,898 INFO L85 PathProgramCache]: Analyzing trace with hash -223296190, now seen corresponding path program 3 times [2024-06-21 20:58:21,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:21,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027862688] [2024-06-21 20:58:21,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:21,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:22,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:22,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027862688] [2024-06-21 20:58:22,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027862688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:22,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:22,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:58:22,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569088215] [2024-06-21 20:58:22,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:22,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:58:22,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:22,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:58:22,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:58:22,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:22,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 334 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:22,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:22,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:22,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:22,617 INFO L124 PetriNetUnfolderBase]: 192/355 cut-off events. [2024-06-21 20:58:22,618 INFO L125 PetriNetUnfolderBase]: For 3370/3370 co-relation queries the response was YES. [2024-06-21 20:58:22,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1601 conditions, 355 events. 192/355 cut-off events. For 3370/3370 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1234 event pairs, 47 based on Foata normal form. 1/354 useless extension candidates. Maximal degree in co-relation 1571. Up to 317 conditions per place. [2024-06-21 20:58:22,620 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 42 selfloop transitions, 10 changer transitions 0/59 dead transitions. [2024-06-21 20:58:22,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 454 flow [2024-06-21 20:58:22,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:58:22,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:58:22,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-21 20:58:22,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 20:58:22,622 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 334 flow. Second operand 7 states and 84 transitions. [2024-06-21 20:58:22,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 454 flow [2024-06-21 20:58:22,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 59 transitions, 427 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-21 20:58:22,625 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 332 flow [2024-06-21 20:58:22,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-06-21 20:58:22,627 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 36 predicate places. [2024-06-21 20:58:22,627 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 332 flow [2024-06-21 20:58:22,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:22,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:22,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:22,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 20:58:22,627 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:22,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:22,628 INFO L85 PathProgramCache]: Analyzing trace with hash -395785894, now seen corresponding path program 3 times [2024-06-21 20:58:22,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:22,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595081597] [2024-06-21 20:58:22,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:22,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:23,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:23,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595081597] [2024-06-21 20:58:23,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595081597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:23,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:23,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 20:58:23,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646729364] [2024-06-21 20:58:23,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:23,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 20:58:23,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:23,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 20:58:23,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 20:58:23,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:23,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 332 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:23,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:23,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:23,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:23,316 INFO L124 PetriNetUnfolderBase]: 202/364 cut-off events. [2024-06-21 20:58:23,316 INFO L125 PetriNetUnfolderBase]: For 3685/3685 co-relation queries the response was YES. [2024-06-21 20:58:23,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 364 events. 202/364 cut-off events. For 3685/3685 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1233 event pairs, 49 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 1629. Up to 341 conditions per place. [2024-06-21 20:58:23,318 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 44 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2024-06-21 20:58:23,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 462 flow [2024-06-21 20:58:23,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 20:58:23,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 20:58:23,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-21 20:58:23,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-21 20:58:23,319 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 332 flow. Second operand 7 states and 80 transitions. [2024-06-21 20:58:23,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 462 flow [2024-06-21 20:58:23,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 431 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-21 20:58:23,323 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 332 flow [2024-06-21 20:58:23,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=332, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2024-06-21 20:58:23,324 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-21 20:58:23,324 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 332 flow [2024-06-21 20:58:23,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:23,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:23,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:23,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 20:58:23,324 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:23,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:23,325 INFO L85 PathProgramCache]: Analyzing trace with hash 467834253, now seen corresponding path program 1 times [2024-06-21 20:58:23,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:23,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471707696] [2024-06-21 20:58:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:23,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:24,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:24,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:24,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471707696] [2024-06-21 20:58:24,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471707696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:24,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:24,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:24,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137941056] [2024-06-21 20:58:24,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:24,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:24,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:24,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:24,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:24,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 332 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:24,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:24,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:24,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:24,501 INFO L124 PetriNetUnfolderBase]: 198/365 cut-off events. [2024-06-21 20:58:24,502 INFO L125 PetriNetUnfolderBase]: For 4372/4372 co-relation queries the response was YES. [2024-06-21 20:58:24,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1708 conditions, 365 events. 198/365 cut-off events. For 4372/4372 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1265 event pairs, 46 based on Foata normal form. 1/364 useless extension candidates. Maximal degree in co-relation 1676. Up to 300 conditions per place. [2024-06-21 20:58:24,505 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 52 selfloop transitions, 16 changer transitions 0/75 dead transitions. [2024-06-21 20:58:24,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 75 transitions, 572 flow [2024-06-21 20:58:24,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:24,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:24,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-21 20:58:24,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121863799283154 [2024-06-21 20:58:24,507 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 332 flow. Second operand 9 states and 115 transitions. [2024-06-21 20:58:24,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 75 transitions, 572 flow [2024-06-21 20:58:24,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 533 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-21 20:58:24,511 INFO L231 Difference]: Finished difference. Result has 70 places, 56 transitions, 362 flow [2024-06-21 20:58:24,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=362, PETRI_PLACES=70, PETRI_TRANSITIONS=56} [2024-06-21 20:58:24,512 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-21 20:58:24,512 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 56 transitions, 362 flow [2024-06-21 20:58:24,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:24,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:24,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:24,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 20:58:24,513 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:24,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:24,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1218325528, now seen corresponding path program 1 times [2024-06-21 20:58:24,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:24,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990378128] [2024-06-21 20:58:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:24,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:25,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:25,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:25,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990378128] [2024-06-21 20:58:25,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990378128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:25,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:25,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:25,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31033169] [2024-06-21 20:58:25,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:25,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:25,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:25,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:25,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:25,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:25,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 56 transitions, 362 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:25,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:25,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:25,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:25,465 INFO L124 PetriNetUnfolderBase]: 213/382 cut-off events. [2024-06-21 20:58:25,466 INFO L125 PetriNetUnfolderBase]: For 4908/4908 co-relation queries the response was YES. [2024-06-21 20:58:25,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 382 events. 213/382 cut-off events. For 4908/4908 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1312 event pairs, 47 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 1821. Up to 350 conditions per place. [2024-06-21 20:58:25,468 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 58 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-06-21 20:58:25,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 550 flow [2024-06-21 20:58:25,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:58:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:58:25,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-21 20:58:25,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 20:58:25,469 INFO L175 Difference]: Start difference. First operand has 70 places, 56 transitions, 362 flow. Second operand 8 states and 93 transitions. [2024-06-21 20:58:25,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 550 flow [2024-06-21 20:58:25,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 522 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-21 20:58:25,474 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 381 flow [2024-06-21 20:58:25,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=381, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-06-21 20:58:25,474 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-21 20:58:25,474 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 381 flow [2024-06-21 20:58:25,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:25,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:25,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:25,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 20:58:25,475 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:25,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:25,475 INFO L85 PathProgramCache]: Analyzing trace with hash 471499383, now seen corresponding path program 2 times [2024-06-21 20:58:25,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:25,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332011616] [2024-06-21 20:58:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:25,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332011616] [2024-06-21 20:58:26,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332011616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:26,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:26,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:26,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563982862] [2024-06-21 20:58:26,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:26,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:26,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:26,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:26,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:26,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:26,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 381 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:26,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:26,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:26,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:26,739 INFO L124 PetriNetUnfolderBase]: 217/398 cut-off events. [2024-06-21 20:58:26,739 INFO L125 PetriNetUnfolderBase]: For 5655/5655 co-relation queries the response was YES. [2024-06-21 20:58:26,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2001 conditions, 398 events. 217/398 cut-off events. For 5655/5655 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1421 event pairs, 50 based on Foata normal form. 1/397 useless extension candidates. Maximal degree in co-relation 1966. Up to 350 conditions per place. [2024-06-21 20:58:26,742 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 55 selfloop transitions, 14 changer transitions 0/77 dead transitions. [2024-06-21 20:58:26,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 77 transitions, 619 flow [2024-06-21 20:58:26,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:26,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:26,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-21 20:58:26,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-21 20:58:26,743 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 381 flow. Second operand 9 states and 104 transitions. [2024-06-21 20:58:26,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 77 transitions, 619 flow [2024-06-21 20:58:26,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 77 transitions, 575 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 20:58:26,748 INFO L231 Difference]: Finished difference. Result has 80 places, 68 transitions, 476 flow [2024-06-21 20:58:26,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=476, PETRI_PLACES=80, PETRI_TRANSITIONS=68} [2024-06-21 20:58:26,748 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-21 20:58:26,748 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 68 transitions, 476 flow [2024-06-21 20:58:26,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:26,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:26,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:26,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 20:58:26,749 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:26,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:26,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1218175798, now seen corresponding path program 2 times [2024-06-21 20:58:26,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:26,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293620142] [2024-06-21 20:58:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:26,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:27,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:27,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:27,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293620142] [2024-06-21 20:58:27,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293620142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:27,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:27,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:27,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603623034] [2024-06-21 20:58:27,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:27,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:27,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:27,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:27,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:27,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:27,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 68 transitions, 476 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:27,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:27,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:27,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:27,564 INFO L124 PetriNetUnfolderBase]: 235/421 cut-off events. [2024-06-21 20:58:27,564 INFO L125 PetriNetUnfolderBase]: For 6424/6424 co-relation queries the response was YES. [2024-06-21 20:58:27,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2193 conditions, 421 events. 235/421 cut-off events. For 6424/6424 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1500 event pairs, 52 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 2153. Up to 331 conditions per place. [2024-06-21 20:58:27,567 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 51 selfloop transitions, 33 changer transitions 0/86 dead transitions. [2024-06-21 20:58:27,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 86 transitions, 800 flow [2024-06-21 20:58:27,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:58:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:58:27,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-21 20:58:27,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-21 20:58:27,568 INFO L175 Difference]: Start difference. First operand has 80 places, 68 transitions, 476 flow. Second operand 8 states and 99 transitions. [2024-06-21 20:58:27,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 86 transitions, 800 flow [2024-06-21 20:58:27,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 86 transitions, 780 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-21 20:58:27,574 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 585 flow [2024-06-21 20:58:27,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=585, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2024-06-21 20:58:27,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-21 20:58:27,575 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 585 flow [2024-06-21 20:58:27,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:27,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:27,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:27,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 20:58:27,575 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:27,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:27,576 INFO L85 PathProgramCache]: Analyzing trace with hash 471649485, now seen corresponding path program 1 times [2024-06-21 20:58:27,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:27,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807617418] [2024-06-21 20:58:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:27,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:28,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:28,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807617418] [2024-06-21 20:58:28,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807617418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:28,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:28,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:28,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111633588] [2024-06-21 20:58:28,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:28,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:28,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:28,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:28,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:28,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:28,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 585 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:28,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:28,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:28,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:28,352 INFO L124 PetriNetUnfolderBase]: 254/451 cut-off events. [2024-06-21 20:58:28,353 INFO L125 PetriNetUnfolderBase]: For 8021/8025 co-relation queries the response was YES. [2024-06-21 20:58:28,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2436 conditions, 451 events. 254/451 cut-off events. For 8021/8025 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1623 event pairs, 52 based on Foata normal form. 5/454 useless extension candidates. Maximal degree in co-relation 2395. Up to 378 conditions per place. [2024-06-21 20:58:28,356 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 23 changer transitions 0/95 dead transitions. [2024-06-21 20:58:28,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 95 transitions, 871 flow [2024-06-21 20:58:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:58:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:58:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-21 20:58:28,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-21 20:58:28,357 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 585 flow. Second operand 8 states and 101 transitions. [2024-06-21 20:58:28,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 95 transitions, 871 flow [2024-06-21 20:58:28,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 95 transitions, 836 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 20:58:28,365 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 642 flow [2024-06-21 20:58:28,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=642, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2024-06-21 20:58:28,365 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-21 20:58:28,365 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 642 flow [2024-06-21 20:58:28,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:28,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:28,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:28,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 20:58:28,366 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:28,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:28,366 INFO L85 PathProgramCache]: Analyzing trace with hash 502540912, now seen corresponding path program 3 times [2024-06-21 20:58:28,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:28,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170876160] [2024-06-21 20:58:28,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:28,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:28,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:28,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:28,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170876160] [2024-06-21 20:58:28,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170876160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:28,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:28,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:28,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671155672] [2024-06-21 20:58:28,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:28,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:28,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:28,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:28,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:28,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:28,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 642 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:28,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:28,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:28,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:29,039 INFO L124 PetriNetUnfolderBase]: 252/449 cut-off events. [2024-06-21 20:58:29,039 INFO L125 PetriNetUnfolderBase]: For 8245/8245 co-relation queries the response was YES. [2024-06-21 20:58:29,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2547 conditions, 449 events. 252/449 cut-off events. For 8245/8245 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1625 event pairs, 54 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 2503. Up to 360 conditions per place. [2024-06-21 20:58:29,042 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 58 selfloop transitions, 31 changer transitions 0/91 dead transitions. [2024-06-21 20:58:29,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 888 flow [2024-06-21 20:58:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:58:29,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:58:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-21 20:58:29,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-21 20:58:29,044 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 642 flow. Second operand 8 states and 99 transitions. [2024-06-21 20:58:29,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 888 flow [2024-06-21 20:58:29,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 91 transitions, 867 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 20:58:29,054 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 688 flow [2024-06-21 20:58:29,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=688, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-06-21 20:58:29,054 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 66 predicate places. [2024-06-21 20:58:29,054 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 688 flow [2024-06-21 20:58:29,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:29,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:29,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:29,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 20:58:29,055 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:29,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:29,056 INFO L85 PathProgramCache]: Analyzing trace with hash 471643533, now seen corresponding path program 3 times [2024-06-21 20:58:29,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:29,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183837130] [2024-06-21 20:58:29,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:29,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:29,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:29,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183837130] [2024-06-21 20:58:29,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183837130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:29,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:29,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:29,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764042381] [2024-06-21 20:58:29,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:29,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:29,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:29,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:29,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:29,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:29,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 688 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:29,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:29,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:29,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:30,040 INFO L124 PetriNetUnfolderBase]: 244/443 cut-off events. [2024-06-21 20:58:30,041 INFO L125 PetriNetUnfolderBase]: For 9278/9278 co-relation queries the response was YES. [2024-06-21 20:58:30,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2602 conditions, 443 events. 244/443 cut-off events. For 9278/9278 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1641 event pairs, 51 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 2555. Up to 356 conditions per place. [2024-06-21 20:58:30,044 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 56 selfloop transitions, 25 changer transitions 0/92 dead transitions. [2024-06-21 20:58:30,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 92 transitions, 894 flow [2024-06-21 20:58:30,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:58:30,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:58:30,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-21 20:58:30,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40725806451612906 [2024-06-21 20:58:30,045 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 688 flow. Second operand 8 states and 101 transitions. [2024-06-21 20:58:30,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 92 transitions, 894 flow [2024-06-21 20:58:30,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 92 transitions, 819 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-21 20:58:30,055 INFO L231 Difference]: Finished difference. Result has 97 places, 82 transitions, 690 flow [2024-06-21 20:58:30,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=690, PETRI_PLACES=97, PETRI_TRANSITIONS=82} [2024-06-21 20:58:30,056 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-21 20:58:30,056 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 82 transitions, 690 flow [2024-06-21 20:58:30,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:30,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:30,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:30,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 20:58:30,056 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:30,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:30,057 INFO L85 PathProgramCache]: Analyzing trace with hash 705632056, now seen corresponding path program 4 times [2024-06-21 20:58:30,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:30,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533341461] [2024-06-21 20:58:30,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:30,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:30,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:30,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533341461] [2024-06-21 20:58:30,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533341461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:30,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:30,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:30,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586271827] [2024-06-21 20:58:30,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:30,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:30,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:30,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:30,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:30,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:30,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 82 transitions, 690 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:30,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:30,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:30,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:30,920 INFO L124 PetriNetUnfolderBase]: 258/459 cut-off events. [2024-06-21 20:58:30,920 INFO L125 PetriNetUnfolderBase]: For 9988/9988 co-relation queries the response was YES. [2024-06-21 20:58:30,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2728 conditions, 459 events. 258/459 cut-off events. For 9988/9988 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1674 event pairs, 54 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 2680. Up to 437 conditions per place. [2024-06-21 20:58:30,924 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 76 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2024-06-21 20:58:30,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 91 transitions, 906 flow [2024-06-21 20:58:30,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:58:30,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:58:30,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-21 20:58:30,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-21 20:58:30,925 INFO L175 Difference]: Start difference. First operand has 97 places, 82 transitions, 690 flow. Second operand 8 states and 87 transitions. [2024-06-21 20:58:30,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 91 transitions, 906 flow [2024-06-21 20:58:30,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 91 transitions, 845 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 20:58:30,936 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 686 flow [2024-06-21 20:58:30,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=686, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2024-06-21 20:58:30,936 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2024-06-21 20:58:30,937 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 686 flow [2024-06-21 20:58:30,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:30,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:30,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:30,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 20:58:30,937 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:30,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:30,938 INFO L85 PathProgramCache]: Analyzing trace with hash 709200149, now seen corresponding path program 2 times [2024-06-21 20:58:30,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:30,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918267372] [2024-06-21 20:58:30,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:30,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:31,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:31,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:31,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918267372] [2024-06-21 20:58:31,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918267372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:31,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:31,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:31,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838564377] [2024-06-21 20:58:31,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:31,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:31,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:31,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:31,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:31,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:31,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 686 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:31,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:31,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:31,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:31,838 INFO L124 PetriNetUnfolderBase]: 282/498 cut-off events. [2024-06-21 20:58:31,838 INFO L125 PetriNetUnfolderBase]: For 12196/12196 co-relation queries the response was YES. [2024-06-21 20:58:31,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2943 conditions, 498 events. 282/498 cut-off events. For 12196/12196 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1847 event pairs, 56 based on Foata normal form. 3/499 useless extension candidates. Maximal degree in co-relation 2894. Up to 453 conditions per place. [2024-06-21 20:58:31,842 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 82 selfloop transitions, 16 changer transitions 0/100 dead transitions. [2024-06-21 20:58:31,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 100 transitions, 986 flow [2024-06-21 20:58:31,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:58:31,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:58:31,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-21 20:58:31,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-21 20:58:31,843 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 686 flow. Second operand 8 states and 94 transitions. [2024-06-21 20:58:31,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 100 transitions, 986 flow [2024-06-21 20:58:31,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 100 transitions, 949 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 20:58:31,855 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 718 flow [2024-06-21 20:58:31,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=718, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2024-06-21 20:58:31,856 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-21 20:58:31,856 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 718 flow [2024-06-21 20:58:31,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:31,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:31,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:31,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 20:58:31,857 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:31,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:31,857 INFO L85 PathProgramCache]: Analyzing trace with hash 701848282, now seen corresponding path program 5 times [2024-06-21 20:58:31,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:31,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158306682] [2024-06-21 20:58:31,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:31,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:32,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:32,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:32,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158306682] [2024-06-21 20:58:32,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158306682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:32,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:32,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:32,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441996925] [2024-06-21 20:58:32,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:32,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:32,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:32,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:32,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:32,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:32,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 718 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:32,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:32,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:32,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:32,495 INFO L124 PetriNetUnfolderBase]: 285/503 cut-off events. [2024-06-21 20:58:32,495 INFO L125 PetriNetUnfolderBase]: For 12720/12720 co-relation queries the response was YES. [2024-06-21 20:58:32,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3042 conditions, 503 events. 285/503 cut-off events. For 12720/12720 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1868 event pairs, 56 based on Foata normal form. 1/502 useless extension candidates. Maximal degree in co-relation 2992. Up to 465 conditions per place. [2024-06-21 20:58:32,499 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 76 selfloop transitions, 20 changer transitions 0/98 dead transitions. [2024-06-21 20:58:32,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 98 transitions, 1002 flow [2024-06-21 20:58:32,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:58:32,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:58:32,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-21 20:58:32,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 20:58:32,500 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 718 flow. Second operand 8 states and 92 transitions. [2024-06-21 20:58:32,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 98 transitions, 1002 flow [2024-06-21 20:58:32,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 98 transitions, 978 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-21 20:58:32,513 INFO L231 Difference]: Finished difference. Result has 105 places, 90 transitions, 765 flow [2024-06-21 20:58:32,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=765, PETRI_PLACES=105, PETRI_TRANSITIONS=90} [2024-06-21 20:58:32,513 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 75 predicate places. [2024-06-21 20:58:32,514 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 90 transitions, 765 flow [2024-06-21 20:58:32,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:32,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:32,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:32,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 20:58:32,514 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:32,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:32,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1667759309, now seen corresponding path program 3 times [2024-06-21 20:58:32,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:32,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536938784] [2024-06-21 20:58:32,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:32,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:33,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:33,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536938784] [2024-06-21 20:58:33,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536938784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:33,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:33,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:33,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883021797] [2024-06-21 20:58:33,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:33,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:33,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:33,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:33,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:33,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 90 transitions, 765 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:33,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:33,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:33,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:33,307 INFO L124 PetriNetUnfolderBase]: 279/494 cut-off events. [2024-06-21 20:58:33,307 INFO L125 PetriNetUnfolderBase]: For 13305/13305 co-relation queries the response was YES. [2024-06-21 20:58:33,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2992 conditions, 494 events. 279/494 cut-off events. For 13305/13305 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1835 event pairs, 54 based on Foata normal form. 3/495 useless extension candidates. Maximal degree in co-relation 2941. Up to 434 conditions per place. [2024-06-21 20:58:33,311 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 80 selfloop transitions, 20 changer transitions 0/102 dead transitions. [2024-06-21 20:58:33,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 102 transitions, 1045 flow [2024-06-21 20:58:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:58:33,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:58:33,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-21 20:58:33,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 20:58:33,323 INFO L175 Difference]: Start difference. First operand has 105 places, 90 transitions, 765 flow. Second operand 8 states and 96 transitions. [2024-06-21 20:58:33,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 102 transitions, 1045 flow [2024-06-21 20:58:33,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 102 transitions, 975 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-21 20:58:33,337 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 740 flow [2024-06-21 20:58:33,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=740, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2024-06-21 20:58:33,338 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-21 20:58:33,338 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 740 flow [2024-06-21 20:58:33,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:33,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:33,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:33,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 20:58:33,339 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:33,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:33,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1675377869, now seen corresponding path program 4 times [2024-06-21 20:58:33,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:33,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610479018] [2024-06-21 20:58:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:33,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:33,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:33,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610479018] [2024-06-21 20:58:33,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610479018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:33,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:33,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:33,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230812907] [2024-06-21 20:58:33,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:33,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:33,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:33,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:33,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:33,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:33,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 740 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:33,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:33,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:33,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:34,140 INFO L124 PetriNetUnfolderBase]: 273/485 cut-off events. [2024-06-21 20:58:34,140 INFO L125 PetriNetUnfolderBase]: For 13208/13208 co-relation queries the response was YES. [2024-06-21 20:58:34,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2915 conditions, 485 events. 273/485 cut-off events. For 13208/13208 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1793 event pairs, 52 based on Foata normal form. 3/486 useless extension candidates. Maximal degree in co-relation 2863. Up to 457 conditions per place. [2024-06-21 20:58:34,144 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 84 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-06-21 20:58:34,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 99 transitions, 956 flow [2024-06-21 20:58:34,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:58:34,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:58:34,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-21 20:58:34,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-21 20:58:34,145 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 740 flow. Second operand 8 states and 89 transitions. [2024-06-21 20:58:34,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 99 transitions, 956 flow [2024-06-21 20:58:34,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 99 transitions, 879 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 20:58:34,159 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 694 flow [2024-06-21 20:58:34,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=694, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2024-06-21 20:58:34,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-21 20:58:34,160 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 694 flow [2024-06-21 20:58:34,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:34,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:34,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:34,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 20:58:34,160 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:34,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:34,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1667753357, now seen corresponding path program 4 times [2024-06-21 20:58:34,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:34,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030619695] [2024-06-21 20:58:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:34,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:34,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:34,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:34,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:34,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030619695] [2024-06-21 20:58:34,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030619695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:34,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:34,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:34,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559450012] [2024-06-21 20:58:34,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:34,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:34,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:34,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:34,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:34,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:34,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 694 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:34,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:34,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:34,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:35,103 INFO L124 PetriNetUnfolderBase]: 259/470 cut-off events. [2024-06-21 20:58:35,104 INFO L125 PetriNetUnfolderBase]: For 13029/13029 co-relation queries the response was YES. [2024-06-21 20:58:35,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2773 conditions, 470 events. 259/470 cut-off events. For 13029/13029 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1767 event pairs, 50 based on Foata normal form. 1/469 useless extension candidates. Maximal degree in co-relation 2721. Up to 418 conditions per place. [2024-06-21 20:58:35,110 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 73 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-06-21 20:58:35,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 99 transitions, 904 flow [2024-06-21 20:58:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 20:58:35,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 20:58:35,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-21 20:58:35,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-21 20:58:35,111 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 694 flow. Second operand 8 states and 94 transitions. [2024-06-21 20:58:35,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 99 transitions, 904 flow [2024-06-21 20:58:35,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 99 transitions, 872 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 20:58:35,126 INFO L231 Difference]: Finished difference. Result has 108 places, 92 transitions, 719 flow [2024-06-21 20:58:35,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=719, PETRI_PLACES=108, PETRI_TRANSITIONS=92} [2024-06-21 20:58:35,130 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-21 20:58:35,131 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 92 transitions, 719 flow [2024-06-21 20:58:35,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:35,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:35,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:35,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 20:58:35,131 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:35,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:35,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1021673250, now seen corresponding path program 6 times [2024-06-21 20:58:35,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:35,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423971873] [2024-06-21 20:58:35,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:35,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:35,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:35,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423971873] [2024-06-21 20:58:35,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423971873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:35,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:35,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:35,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643752749] [2024-06-21 20:58:35,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:35,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:35,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:35,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:35,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:35,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:35,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 92 transitions, 719 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:35,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:35,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:35,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:35,934 INFO L124 PetriNetUnfolderBase]: 269/479 cut-off events. [2024-06-21 20:58:35,934 INFO L125 PetriNetUnfolderBase]: For 13445/13445 co-relation queries the response was YES. [2024-06-21 20:58:35,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2839 conditions, 479 events. 269/479 cut-off events. For 13445/13445 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1766 event pairs, 52 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 2786. Up to 442 conditions per place. [2024-06-21 20:58:35,939 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 22 changer transitions 0/99 dead transitions. [2024-06-21 20:58:35,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 99 transitions, 929 flow [2024-06-21 20:58:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:35,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-21 20:58:35,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-21 20:58:35,940 INFO L175 Difference]: Start difference. First operand has 108 places, 92 transitions, 719 flow. Second operand 9 states and 97 transitions. [2024-06-21 20:58:35,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 99 transitions, 929 flow [2024-06-21 20:58:35,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 99 transitions, 874 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-21 20:58:35,955 INFO L231 Difference]: Finished difference. Result has 111 places, 92 transitions, 713 flow [2024-06-21 20:58:35,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=713, PETRI_PLACES=111, PETRI_TRANSITIONS=92} [2024-06-21 20:58:35,957 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-21 20:58:35,957 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 92 transitions, 713 flow [2024-06-21 20:58:35,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 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) [2024-06-21 20:58:35,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:35,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:35,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 20:58:35,958 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:35,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:35,958 INFO L85 PathProgramCache]: Analyzing trace with hash -720346959, now seen corresponding path program 5 times [2024-06-21 20:58:35,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:35,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880865677] [2024-06-21 20:58:35,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:35,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:36,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:36,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:36,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880865677] [2024-06-21 20:58:36,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880865677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:36,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:36,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:36,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235618347] [2024-06-21 20:58:36,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:36,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:36,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:36,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:36,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:36,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:36,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 92 transitions, 713 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:36,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:36,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:36,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:37,072 INFO L124 PetriNetUnfolderBase]: 267/484 cut-off events. [2024-06-21 20:58:37,073 INFO L125 PetriNetUnfolderBase]: For 14462/14466 co-relation queries the response was YES. [2024-06-21 20:58:37,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2896 conditions, 484 events. 267/484 cut-off events. For 14462/14466 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1834 event pairs, 45 based on Foata normal form. 3/485 useless extension candidates. Maximal degree in co-relation 2842. Up to 406 conditions per place. [2024-06-21 20:58:37,076 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 77 selfloop transitions, 24 changer transitions 0/114 dead transitions. [2024-06-21 20:58:37,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 114 transitions, 1015 flow [2024-06-21 20:58:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:58:37,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:58:37,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-21 20:58:37,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-21 20:58:37,078 INFO L175 Difference]: Start difference. First operand has 111 places, 92 transitions, 713 flow. Second operand 10 states and 121 transitions. [2024-06-21 20:58:37,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 114 transitions, 1015 flow [2024-06-21 20:58:37,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 114 transitions, 966 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 20:58:37,092 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 790 flow [2024-06-21 20:58:37,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=790, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2024-06-21 20:58:37,093 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 84 predicate places. [2024-06-21 20:58:37,093 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 790 flow [2024-06-21 20:58:37,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:37,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:37,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:37,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 20:58:37,094 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:37,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:37,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1161233297, now seen corresponding path program 6 times [2024-06-21 20:58:37,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:37,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918839604] [2024-06-21 20:58:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:37,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:37,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:37,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:37,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918839604] [2024-06-21 20:58:37,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918839604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:37,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:37,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 20:58:37,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194439600] [2024-06-21 20:58:37,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:37,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 20:58:37,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:37,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 20:58:37,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 20:58:37,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:37,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 790 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:37,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:37,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:37,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:38,194 INFO L124 PetriNetUnfolderBase]: 265/481 cut-off events. [2024-06-21 20:58:38,194 INFO L125 PetriNetUnfolderBase]: For 15031/15031 co-relation queries the response was YES. [2024-06-21 20:58:38,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2921 conditions, 481 events. 265/481 cut-off events. For 15031/15031 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1842 event pairs, 45 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 2865. Up to 409 conditions per place. [2024-06-21 20:58:38,197 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 80 selfloop transitions, 21 changer transitions 0/114 dead transitions. [2024-06-21 20:58:38,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 114 transitions, 1056 flow [2024-06-21 20:58:38,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-21 20:58:38,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-21 20:58:38,198 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 790 flow. Second operand 9 states and 111 transitions. [2024-06-21 20:58:38,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 114 transitions, 1056 flow [2024-06-21 20:58:38,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 114 transitions, 985 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 20:58:38,214 INFO L231 Difference]: Finished difference. Result has 119 places, 102 transitions, 816 flow [2024-06-21 20:58:38,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=723, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=816, PETRI_PLACES=119, PETRI_TRANSITIONS=102} [2024-06-21 20:58:38,214 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-21 20:58:38,214 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 102 transitions, 816 flow [2024-06-21 20:58:38,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:38,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:38,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:38,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 20:58:38,215 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:38,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:38,215 INFO L85 PathProgramCache]: Analyzing trace with hash 886492067, now seen corresponding path program 1 times [2024-06-21 20:58:38,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:38,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258957804] [2024-06-21 20:58:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:38,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:39,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:39,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258957804] [2024-06-21 20:58:39,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258957804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:39,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:39,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:39,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038924023] [2024-06-21 20:58:39,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:39,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:39,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:39,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:39,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:39,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:39,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 102 transitions, 816 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:39,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:39,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:39,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:39,355 INFO L124 PetriNetUnfolderBase]: 276/502 cut-off events. [2024-06-21 20:58:39,355 INFO L125 PetriNetUnfolderBase]: For 17672/17672 co-relation queries the response was YES. [2024-06-21 20:58:39,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3126 conditions, 502 events. 276/502 cut-off events. For 17672/17672 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1955 event pairs, 26 based on Foata normal form. 2/502 useless extension candidates. Maximal degree in co-relation 3067. Up to 359 conditions per place. [2024-06-21 20:58:39,358 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 75 selfloop transitions, 35 changer transitions 0/123 dead transitions. [2024-06-21 20:58:39,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 123 transitions, 1182 flow [2024-06-21 20:58:39,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:58:39,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:58:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-21 20:58:39,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-21 20:58:39,360 INFO L175 Difference]: Start difference. First operand has 119 places, 102 transitions, 816 flow. Second operand 10 states and 125 transitions. [2024-06-21 20:58:39,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 123 transitions, 1182 flow [2024-06-21 20:58:39,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 123 transitions, 1115 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-21 20:58:39,375 INFO L231 Difference]: Finished difference. Result has 123 places, 104 transitions, 857 flow [2024-06-21 20:58:39,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=857, PETRI_PLACES=123, PETRI_TRANSITIONS=104} [2024-06-21 20:58:39,376 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-21 20:58:39,376 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 104 transitions, 857 flow [2024-06-21 20:58:39,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:39,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:39,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:39,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 20:58:39,377 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:39,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:39,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1617960641, now seen corresponding path program 2 times [2024-06-21 20:58:39,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:39,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614889502] [2024-06-21 20:58:39,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:39,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:40,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:40,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:40,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614889502] [2024-06-21 20:58:40,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614889502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:40,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:40,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:40,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812488982] [2024-06-21 20:58:40,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:40,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:40,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:40,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:40,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:40,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:40,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 104 transitions, 857 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:40,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:40,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:40,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:40,621 INFO L124 PetriNetUnfolderBase]: 280/510 cut-off events. [2024-06-21 20:58:40,622 INFO L125 PetriNetUnfolderBase]: For 18921/18921 co-relation queries the response was YES. [2024-06-21 20:58:40,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3223 conditions, 510 events. 280/510 cut-off events. For 18921/18921 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2010 event pairs, 44 based on Foata normal form. 2/510 useless extension candidates. Maximal degree in co-relation 3164. Up to 402 conditions per place. [2024-06-21 20:58:40,625 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 75 selfloop transitions, 34 changer transitions 0/122 dead transitions. [2024-06-21 20:58:40,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 122 transitions, 1141 flow [2024-06-21 20:58:40,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:58:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:58:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-21 20:58:40,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-21 20:58:40,626 INFO L175 Difference]: Start difference. First operand has 123 places, 104 transitions, 857 flow. Second operand 10 states and 124 transitions. [2024-06-21 20:58:40,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 122 transitions, 1141 flow [2024-06-21 20:58:40,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 122 transitions, 1067 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 20:58:40,643 INFO L231 Difference]: Finished difference. Result has 127 places, 105 transitions, 875 flow [2024-06-21 20:58:40,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=875, PETRI_PLACES=127, PETRI_TRANSITIONS=105} [2024-06-21 20:58:40,643 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-21 20:58:40,643 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 105 transitions, 875 flow [2024-06-21 20:58:40,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:40,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:40,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:40,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 20:58:40,644 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:40,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:40,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1617960765, now seen corresponding path program 1 times [2024-06-21 20:58:40,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:40,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233428713] [2024-06-21 20:58:40,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:40,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:41,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:41,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:41,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233428713] [2024-06-21 20:58:41,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233428713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:41,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:41,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:41,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902620097] [2024-06-21 20:58:41,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:41,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:41,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:41,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:41,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:41,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:41,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 105 transitions, 875 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:41,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:41,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:41,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:41,760 INFO L124 PetriNetUnfolderBase]: 295/527 cut-off events. [2024-06-21 20:58:41,760 INFO L125 PetriNetUnfolderBase]: For 19421/19421 co-relation queries the response was YES. [2024-06-21 20:58:41,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3336 conditions, 527 events. 295/527 cut-off events. For 19421/19421 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2049 event pairs, 45 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 3275. Up to 436 conditions per place. [2024-06-21 20:58:41,764 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 85 selfloop transitions, 37 changer transitions 0/124 dead transitions. [2024-06-21 20:58:41,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 124 transitions, 1187 flow [2024-06-21 20:58:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:58:41,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:58:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 20:58:41,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-21 20:58:41,768 INFO L175 Difference]: Start difference. First operand has 127 places, 105 transitions, 875 flow. Second operand 11 states and 123 transitions. [2024-06-21 20:58:41,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 124 transitions, 1187 flow [2024-06-21 20:58:41,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 124 transitions, 1113 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 20:58:41,788 INFO L231 Difference]: Finished difference. Result has 130 places, 107 transitions, 908 flow [2024-06-21 20:58:41,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=908, PETRI_PLACES=130, PETRI_TRANSITIONS=107} [2024-06-21 20:58:41,789 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-21 20:58:41,789 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 107 transitions, 908 flow [2024-06-21 20:58:41,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:41,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:41,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:41,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 20:58:41,789 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:41,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:41,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1620757151, now seen corresponding path program 3 times [2024-06-21 20:58:41,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:41,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276484827] [2024-06-21 20:58:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:41,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:42,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:42,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276484827] [2024-06-21 20:58:42,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276484827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:42,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:42,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:42,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959685814] [2024-06-21 20:58:42,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:42,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:42,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:42,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:42,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:42,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:42,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 107 transitions, 908 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:42,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:42,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:42,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:42,962 INFO L124 PetriNetUnfolderBase]: 282/512 cut-off events. [2024-06-21 20:58:42,962 INFO L125 PetriNetUnfolderBase]: For 20103/20103 co-relation queries the response was YES. [2024-06-21 20:58:42,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3250 conditions, 512 events. 282/512 cut-off events. For 20103/20103 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2017 event pairs, 42 based on Foata normal form. 2/512 useless extension candidates. Maximal degree in co-relation 3188. Up to 416 conditions per place. [2024-06-21 20:58:42,965 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 76 selfloop transitions, 30 changer transitions 0/120 dead transitions. [2024-06-21 20:58:42,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 120 transitions, 1152 flow [2024-06-21 20:58:42,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-21 20:58:42,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-21 20:58:42,967 INFO L175 Difference]: Start difference. First operand has 130 places, 107 transitions, 908 flow. Second operand 9 states and 110 transitions. [2024-06-21 20:58:42,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 120 transitions, 1152 flow [2024-06-21 20:58:42,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 120 transitions, 1061 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 20:58:42,989 INFO L231 Difference]: Finished difference. Result has 130 places, 107 transitions, 883 flow [2024-06-21 20:58:42,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=883, PETRI_PLACES=130, PETRI_TRANSITIONS=107} [2024-06-21 20:58:42,989 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-21 20:58:42,989 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 107 transitions, 883 flow [2024-06-21 20:58:42,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:42,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:42,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:42,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 20:58:42,990 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:42,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:42,990 INFO L85 PathProgramCache]: Analyzing trace with hash -922118331, now seen corresponding path program 1 times [2024-06-21 20:58:42,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:42,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400497307] [2024-06-21 20:58:42,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:42,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:43,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:43,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:43,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400497307] [2024-06-21 20:58:43,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400497307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:43,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:43,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:43,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839211268] [2024-06-21 20:58:43,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:43,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:43,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:43,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:43,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:43,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:43,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 107 transitions, 883 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:43,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:43,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:43,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:43,899 INFO L124 PetriNetUnfolderBase]: 301/537 cut-off events. [2024-06-21 20:58:43,899 INFO L125 PetriNetUnfolderBase]: For 21659/21659 co-relation queries the response was YES. [2024-06-21 20:58:43,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3366 conditions, 537 events. 301/537 cut-off events. For 21659/21659 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2092 event pairs, 47 based on Foata normal form. 3/538 useless extension candidates. Maximal degree in co-relation 3303. Up to 475 conditions per place. [2024-06-21 20:58:43,902 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 94 selfloop transitions, 27 changer transitions 0/123 dead transitions. [2024-06-21 20:58:43,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 123 transitions, 1179 flow [2024-06-21 20:58:43,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:43,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:43,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-21 20:58:43,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-21 20:58:43,907 INFO L175 Difference]: Start difference. First operand has 130 places, 107 transitions, 883 flow. Second operand 9 states and 104 transitions. [2024-06-21 20:58:43,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 123 transitions, 1179 flow [2024-06-21 20:58:43,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 123 transitions, 1113 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 20:58:43,932 INFO L231 Difference]: Finished difference. Result has 131 places, 109 transitions, 898 flow [2024-06-21 20:58:43,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=898, PETRI_PLACES=131, PETRI_TRANSITIONS=109} [2024-06-21 20:58:43,933 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-21 20:58:43,933 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 109 transitions, 898 flow [2024-06-21 20:58:43,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:43,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:43,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:43,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 20:58:43,933 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:43,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:43,934 INFO L85 PathProgramCache]: Analyzing trace with hash -806647671, now seen corresponding path program 2 times [2024-06-21 20:58:43,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:43,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140750578] [2024-06-21 20:58:43,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:43,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:44,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:44,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:44,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140750578] [2024-06-21 20:58:44,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140750578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:44,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:44,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:44,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432975529] [2024-06-21 20:58:44,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:44,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:44,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:44,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:44,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:44,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:44,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 109 transitions, 898 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:44,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:44,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:44,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:44,678 INFO L124 PetriNetUnfolderBase]: 335/592 cut-off events. [2024-06-21 20:58:44,678 INFO L125 PetriNetUnfolderBase]: For 26407/26407 co-relation queries the response was YES. [2024-06-21 20:58:44,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3866 conditions, 592 events. 335/592 cut-off events. For 26407/26407 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2389 event pairs, 59 based on Foata normal form. 3/593 useless extension candidates. Maximal degree in co-relation 3802. Up to 382 conditions per place. [2024-06-21 20:58:44,682 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 81 selfloop transitions, 50 changer transitions 0/133 dead transitions. [2024-06-21 20:58:44,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 133 transitions, 1416 flow [2024-06-21 20:58:44,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:44,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:44,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 20:58:44,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 20:58:44,700 INFO L175 Difference]: Start difference. First operand has 131 places, 109 transitions, 898 flow. Second operand 9 states and 117 transitions. [2024-06-21 20:58:44,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 133 transitions, 1416 flow [2024-06-21 20:58:44,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 133 transitions, 1351 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 20:58:44,726 INFO L231 Difference]: Finished difference. Result has 133 places, 115 transitions, 1008 flow [2024-06-21 20:58:44,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1008, PETRI_PLACES=133, PETRI_TRANSITIONS=115} [2024-06-21 20:58:44,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-21 20:58:44,726 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 115 transitions, 1008 flow [2024-06-21 20:58:44,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:44,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:44,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:44,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 20:58:44,727 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:44,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:44,727 INFO L85 PathProgramCache]: Analyzing trace with hash -806654181, now seen corresponding path program 3 times [2024-06-21 20:58:44,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:44,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36999430] [2024-06-21 20:58:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:44,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:45,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:45,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36999430] [2024-06-21 20:58:45,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36999430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:45,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:45,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:45,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030638222] [2024-06-21 20:58:45,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:45,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:45,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:45,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:45,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:45,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:45,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 115 transitions, 1008 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:45,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:45,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:45,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:45,674 INFO L124 PetriNetUnfolderBase]: 344/607 cut-off events. [2024-06-21 20:58:45,675 INFO L125 PetriNetUnfolderBase]: For 28251/28251 co-relation queries the response was YES. [2024-06-21 20:58:45,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4056 conditions, 607 events. 344/607 cut-off events. For 28251/28251 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2464 event pairs, 59 based on Foata normal form. 3/608 useless extension candidates. Maximal degree in co-relation 3991. Up to 390 conditions per place. [2024-06-21 20:58:45,678 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 85 selfloop transitions, 50 changer transitions 0/137 dead transitions. [2024-06-21 20:58:45,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 137 transitions, 1504 flow [2024-06-21 20:58:45,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:45,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 20:58:45,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 20:58:45,693 INFO L175 Difference]: Start difference. First operand has 133 places, 115 transitions, 1008 flow. Second operand 9 states and 120 transitions. [2024-06-21 20:58:45,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 137 transitions, 1504 flow [2024-06-21 20:58:45,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 137 transitions, 1443 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-21 20:58:45,720 INFO L231 Difference]: Finished difference. Result has 138 places, 117 transitions, 1078 flow [2024-06-21 20:58:45,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1078, PETRI_PLACES=138, PETRI_TRANSITIONS=117} [2024-06-21 20:58:45,721 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 108 predicate places. [2024-06-21 20:58:45,721 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 117 transitions, 1078 flow [2024-06-21 20:58:45,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:45,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:45,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:45,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 20:58:45,722 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:45,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:45,722 INFO L85 PathProgramCache]: Analyzing trace with hash -806654367, now seen corresponding path program 2 times [2024-06-21 20:58:45,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:45,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119881349] [2024-06-21 20:58:45,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:45,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:46,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:46,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119881349] [2024-06-21 20:58:46,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119881349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:46,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:46,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:46,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147279887] [2024-06-21 20:58:46,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:46,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:46,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:46,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:46,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:46,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:46,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 117 transitions, 1078 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:46,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:46,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:46,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:46,667 INFO L124 PetriNetUnfolderBase]: 347/612 cut-off events. [2024-06-21 20:58:46,667 INFO L125 PetriNetUnfolderBase]: For 28230/28230 co-relation queries the response was YES. [2024-06-21 20:58:46,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4172 conditions, 612 events. 347/612 cut-off events. For 28230/28230 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2477 event pairs, 62 based on Foata normal form. 1/611 useless extension candidates. Maximal degree in co-relation 4105. Up to 512 conditions per place. [2024-06-21 20:58:46,671 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 83 selfloop transitions, 44 changer transitions 0/129 dead transitions. [2024-06-21 20:58:46,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 129 transitions, 1380 flow [2024-06-21 20:58:46,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:46,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-21 20:58:46,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-21 20:58:46,686 INFO L175 Difference]: Start difference. First operand has 138 places, 117 transitions, 1078 flow. Second operand 9 states and 106 transitions. [2024-06-21 20:58:46,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 129 transitions, 1380 flow [2024-06-21 20:58:46,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 129 transitions, 1283 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 20:58:46,726 INFO L231 Difference]: Finished difference. Result has 141 places, 119 transitions, 1102 flow [2024-06-21 20:58:46,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1102, PETRI_PLACES=141, PETRI_TRANSITIONS=119} [2024-06-21 20:58:46,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-21 20:58:46,727 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 119 transitions, 1102 flow [2024-06-21 20:58:46,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:46,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:46,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:46,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 20:58:46,728 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:46,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash -806831997, now seen corresponding path program 3 times [2024-06-21 20:58:46,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:46,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218621378] [2024-06-21 20:58:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:46,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:47,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:47,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218621378] [2024-06-21 20:58:47,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218621378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:47,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:47,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:47,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474295302] [2024-06-21 20:58:47,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:47,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:47,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:47,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:47,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:47,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:47,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 119 transitions, 1102 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:47,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:47,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:47,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:47,642 INFO L124 PetriNetUnfolderBase]: 350/617 cut-off events. [2024-06-21 20:58:47,642 INFO L125 PetriNetUnfolderBase]: For 29561/29561 co-relation queries the response was YES. [2024-06-21 20:58:47,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4212 conditions, 617 events. 350/617 cut-off events. For 29561/29561 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2508 event pairs, 62 based on Foata normal form. 1/616 useless extension candidates. Maximal degree in co-relation 4144. Up to 509 conditions per place. [2024-06-21 20:58:47,647 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 85 selfloop transitions, 45 changer transitions 0/132 dead transitions. [2024-06-21 20:58:47,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 132 transitions, 1416 flow [2024-06-21 20:58:47,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:58:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:58:47,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-21 20:58:47,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-21 20:58:47,656 INFO L175 Difference]: Start difference. First operand has 141 places, 119 transitions, 1102 flow. Second operand 10 states and 117 transitions. [2024-06-21 20:58:47,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 132 transitions, 1416 flow [2024-06-21 20:58:47,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 132 transitions, 1311 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 20:58:47,695 INFO L231 Difference]: Finished difference. Result has 144 places, 121 transitions, 1125 flow [2024-06-21 20:58:47,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1125, PETRI_PLACES=144, PETRI_TRANSITIONS=121} [2024-06-21 20:58:47,695 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 114 predicate places. [2024-06-21 20:58:47,696 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 121 transitions, 1125 flow [2024-06-21 20:58:47,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:47,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:47,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:47,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 20:58:47,696 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:47,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:47,697 INFO L85 PathProgramCache]: Analyzing trace with hash -806827161, now seen corresponding path program 4 times [2024-06-21 20:58:47,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:47,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111495455] [2024-06-21 20:58:47,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:47,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:48,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:48,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111495455] [2024-06-21 20:58:48,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111495455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:48,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:48,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:48,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994262555] [2024-06-21 20:58:48,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:48,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:48,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:48,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:48,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:48,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:48,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 121 transitions, 1125 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:48,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:48,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:48,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:48,560 INFO L124 PetriNetUnfolderBase]: 344/608 cut-off events. [2024-06-21 20:58:48,561 INFO L125 PetriNetUnfolderBase]: For 30361/30361 co-relation queries the response was YES. [2024-06-21 20:58:48,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4106 conditions, 608 events. 344/608 cut-off events. For 30361/30361 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2469 event pairs, 57 based on Foata normal form. 3/609 useless extension candidates. Maximal degree in co-relation 4037. Up to 396 conditions per place. [2024-06-21 20:58:48,565 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 91 selfloop transitions, 47 changer transitions 0/140 dead transitions. [2024-06-21 20:58:48,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 140 transitions, 1531 flow [2024-06-21 20:58:48,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:48,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:48,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 20:58:48,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2024-06-21 20:58:48,566 INFO L175 Difference]: Start difference. First operand has 144 places, 121 transitions, 1125 flow. Second operand 9 states and 120 transitions. [2024-06-21 20:58:48,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 140 transitions, 1531 flow [2024-06-21 20:58:48,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 140 transitions, 1413 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-21 20:58:48,602 INFO L231 Difference]: Finished difference. Result has 145 places, 121 transitions, 1106 flow [2024-06-21 20:58:48,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1106, PETRI_PLACES=145, PETRI_TRANSITIONS=121} [2024-06-21 20:58:48,603 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-21 20:58:48,603 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 121 transitions, 1106 flow [2024-06-21 20:58:48,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:48,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:48,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:48,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 20:58:48,603 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:48,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:48,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1736048321, now seen corresponding path program 4 times [2024-06-21 20:58:48,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:48,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413064385] [2024-06-21 20:58:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:48,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:49,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:49,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413064385] [2024-06-21 20:58:49,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413064385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:49,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:49,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:49,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941022241] [2024-06-21 20:58:49,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:49,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:49,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:49,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:49,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:49,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:49,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 121 transitions, 1106 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:49,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:49,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:49,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:49,606 INFO L124 PetriNetUnfolderBase]: 336/604 cut-off events. [2024-06-21 20:58:49,606 INFO L125 PetriNetUnfolderBase]: For 31171/31171 co-relation queries the response was YES. [2024-06-21 20:58:49,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4129 conditions, 604 events. 336/604 cut-off events. For 31171/31171 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2515 event pairs, 57 based on Foata normal form. 2/604 useless extension candidates. Maximal degree in co-relation 4059. Up to 497 conditions per place. [2024-06-21 20:58:49,610 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 86 selfloop transitions, 31 changer transitions 0/133 dead transitions. [2024-06-21 20:58:49,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 133 transitions, 1384 flow [2024-06-21 20:58:49,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:49,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-21 20:58:49,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-21 20:58:49,612 INFO L175 Difference]: Start difference. First operand has 145 places, 121 transitions, 1106 flow. Second operand 9 states and 111 transitions. [2024-06-21 20:58:49,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 133 transitions, 1384 flow [2024-06-21 20:58:49,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 133 transitions, 1261 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 20:58:49,657 INFO L231 Difference]: Finished difference. Result has 145 places, 122 transitions, 1069 flow [2024-06-21 20:58:49,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1069, PETRI_PLACES=145, PETRI_TRANSITIONS=122} [2024-06-21 20:58:49,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-21 20:58:49,658 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 122 transitions, 1069 flow [2024-06-21 20:58:49,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:49,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:49,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:49,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 20:58:49,662 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:49,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:49,666 INFO L85 PathProgramCache]: Analyzing trace with hash 171863457, now seen corresponding path program 5 times [2024-06-21 20:58:49,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:49,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39124396] [2024-06-21 20:58:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:49,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:50,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:50,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39124396] [2024-06-21 20:58:50,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39124396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:50,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:50,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:50,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554838769] [2024-06-21 20:58:50,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:50,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:50,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:50,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:50,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:50,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:50,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 122 transitions, 1069 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:50,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:50,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:50,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:50,443 INFO L124 PetriNetUnfolderBase]: 372/655 cut-off events. [2024-06-21 20:58:50,443 INFO L125 PetriNetUnfolderBase]: For 36032/36032 co-relation queries the response was YES. [2024-06-21 20:58:50,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4482 conditions, 655 events. 372/655 cut-off events. For 36032/36032 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2733 event pairs, 64 based on Foata normal form. 3/656 useless extension candidates. Maximal degree in co-relation 4411. Up to 533 conditions per place. [2024-06-21 20:58:50,449 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 112 selfloop transitions, 28 changer transitions 0/142 dead transitions. [2024-06-21 20:58:50,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 142 transitions, 1609 flow [2024-06-21 20:58:50,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-21 20:58:50,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-21 20:58:50,453 INFO L175 Difference]: Start difference. First operand has 145 places, 122 transitions, 1069 flow. Second operand 9 states and 111 transitions. [2024-06-21 20:58:50,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 142 transitions, 1609 flow [2024-06-21 20:58:50,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 1533 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 20:58:50,504 INFO L231 Difference]: Finished difference. Result has 147 places, 126 transitions, 1106 flow [2024-06-21 20:58:50,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1106, PETRI_PLACES=147, PETRI_TRANSITIONS=126} [2024-06-21 20:58:50,505 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-21 20:58:50,505 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 126 transitions, 1106 flow [2024-06-21 20:58:50,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:50,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:50,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:50,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 20:58:50,506 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:50,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:50,506 INFO L85 PathProgramCache]: Analyzing trace with hash 397107011, now seen corresponding path program 6 times [2024-06-21 20:58:50,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:50,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388666013] [2024-06-21 20:58:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:50,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:51,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:51,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388666013] [2024-06-21 20:58:51,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388666013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:51,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:51,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:51,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628532562] [2024-06-21 20:58:51,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:51,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:51,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:51,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:51,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:51,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:51,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 126 transitions, 1106 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:51,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:51,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:51,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:51,386 INFO L124 PetriNetUnfolderBase]: 381/670 cut-off events. [2024-06-21 20:58:51,386 INFO L125 PetriNetUnfolderBase]: For 37869/37869 co-relation queries the response was YES. [2024-06-21 20:58:51,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4600 conditions, 670 events. 381/670 cut-off events. For 37869/37869 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2822 event pairs, 64 based on Foata normal form. 3/671 useless extension candidates. Maximal degree in co-relation 4528. Up to 629 conditions per place. [2024-06-21 20:58:51,390 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2024-06-21 20:58:51,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 140 transitions, 1442 flow [2024-06-21 20:58:51,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-21 20:58:51,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-21 20:58:51,392 INFO L175 Difference]: Start difference. First operand has 147 places, 126 transitions, 1106 flow. Second operand 9 states and 100 transitions. [2024-06-21 20:58:51,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 140 transitions, 1442 flow [2024-06-21 20:58:51,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 140 transitions, 1354 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-21 20:58:51,440 INFO L231 Difference]: Finished difference. Result has 150 places, 128 transitions, 1087 flow [2024-06-21 20:58:51,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1087, PETRI_PLACES=150, PETRI_TRANSITIONS=128} [2024-06-21 20:58:51,440 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-21 20:58:51,441 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 128 transitions, 1087 flow [2024-06-21 20:58:51,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:51,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:51,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:51,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 20:58:51,441 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:51,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:51,442 INFO L85 PathProgramCache]: Analyzing trace with hash 160751975, now seen corresponding path program 4 times [2024-06-21 20:58:51,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:51,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244720197] [2024-06-21 20:58:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:51,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:52,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:52,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:52,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244720197] [2024-06-21 20:58:52,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244720197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:52,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:52,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:52,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061906003] [2024-06-21 20:58:52,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:52,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:52,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:52,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:52,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:52,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:52,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 128 transitions, 1087 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:52,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:52,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:52,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:52,309 INFO L124 PetriNetUnfolderBase]: 384/675 cut-off events. [2024-06-21 20:58:52,309 INFO L125 PetriNetUnfolderBase]: For 37335/37335 co-relation queries the response was YES. [2024-06-21 20:58:52,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4592 conditions, 675 events. 384/675 cut-off events. For 37335/37335 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2851 event pairs, 68 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 4519. Up to 635 conditions per place. [2024-06-21 20:58:52,313 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 113 selfloop transitions, 23 changer transitions 0/138 dead transitions. [2024-06-21 20:58:52,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 138 transitions, 1409 flow [2024-06-21 20:58:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-21 20:58:52,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 20:58:52,314 INFO L175 Difference]: Start difference. First operand has 150 places, 128 transitions, 1087 flow. Second operand 9 states and 99 transitions. [2024-06-21 20:58:52,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 138 transitions, 1409 flow [2024-06-21 20:58:52,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 138 transitions, 1364 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-21 20:58:52,367 INFO L231 Difference]: Finished difference. Result has 152 places, 130 transitions, 1129 flow [2024-06-21 20:58:52,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1129, PETRI_PLACES=152, PETRI_TRANSITIONS=130} [2024-06-21 20:58:52,368 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-21 20:58:52,368 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 130 transitions, 1129 flow [2024-06-21 20:58:52,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:52,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:52,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:52,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 20:58:52,369 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:52,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:52,369 INFO L85 PathProgramCache]: Analyzing trace with hash 397403929, now seen corresponding path program 1 times [2024-06-21 20:58:52,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:52,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047445026] [2024-06-21 20:58:52,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:52,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:52,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:52,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047445026] [2024-06-21 20:58:52,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047445026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:52,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:52,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:52,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407194995] [2024-06-21 20:58:52,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:52,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:52,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:52,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:52,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:53,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:53,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 130 transitions, 1129 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:53,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:53,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:53,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:53,387 INFO L124 PetriNetUnfolderBase]: 380/669 cut-off events. [2024-06-21 20:58:53,388 INFO L125 PetriNetUnfolderBase]: For 37908/37908 co-relation queries the response was YES. [2024-06-21 20:58:53,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4520 conditions, 669 events. 380/669 cut-off events. For 37908/37908 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2811 event pairs, 60 based on Foata normal form. 2/669 useless extension candidates. Maximal degree in co-relation 4446. Up to 636 conditions per place. [2024-06-21 20:58:53,391 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 125 selfloop transitions, 15 changer transitions 0/142 dead transitions. [2024-06-21 20:58:53,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 142 transitions, 1449 flow [2024-06-21 20:58:53,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:53,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-21 20:58:53,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-21 20:58:53,393 INFO L175 Difference]: Start difference. First operand has 152 places, 130 transitions, 1129 flow. Second operand 9 states and 98 transitions. [2024-06-21 20:58:53,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 142 transitions, 1449 flow [2024-06-21 20:58:53,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 142 transitions, 1378 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-21 20:58:53,439 INFO L231 Difference]: Finished difference. Result has 154 places, 132 transitions, 1115 flow [2024-06-21 20:58:53,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1115, PETRI_PLACES=154, PETRI_TRANSITIONS=132} [2024-06-21 20:58:53,440 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-21 20:58:53,440 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 132 transitions, 1115 flow [2024-06-21 20:58:53,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:53,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:53,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:53,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 20:58:53,441 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:53,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:53,441 INFO L85 PathProgramCache]: Analyzing trace with hash 160747201, now seen corresponding path program 5 times [2024-06-21 20:58:53,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:53,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002454417] [2024-06-21 20:58:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:53,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:54,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:54,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:54,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002454417] [2024-06-21 20:58:54,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002454417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:54,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:54,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:54,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834610631] [2024-06-21 20:58:54,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:54,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:54,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:54,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:54,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:54,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-21 20:58:54,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 132 transitions, 1115 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:54,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:54,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-21 20:58:54,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:54,500 INFO L124 PetriNetUnfolderBase]: 363/650 cut-off events. [2024-06-21 20:58:54,501 INFO L125 PetriNetUnfolderBase]: For 37476/37476 co-relation queries the response was YES. [2024-06-21 20:58:54,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4356 conditions, 650 events. 363/650 cut-off events. For 37476/37476 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2765 event pairs, 62 based on Foata normal form. 2/650 useless extension candidates. Maximal degree in co-relation 4281. Up to 585 conditions per place. [2024-06-21 20:58:54,504 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 110 selfloop transitions, 14 changer transitions 0/141 dead transitions. [2024-06-21 20:58:54,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 141 transitions, 1383 flow [2024-06-21 20:58:54,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:54,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-21 20:58:54,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-21 20:58:54,506 INFO L175 Difference]: Start difference. First operand has 154 places, 132 transitions, 1115 flow. Second operand 9 states and 104 transitions. [2024-06-21 20:58:54,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 141 transitions, 1383 flow [2024-06-21 20:58:54,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 141 transitions, 1339 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 20:58:54,554 INFO L231 Difference]: Finished difference. Result has 156 places, 132 transitions, 1103 flow [2024-06-21 20:58:54,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1103, PETRI_PLACES=156, PETRI_TRANSITIONS=132} [2024-06-21 20:58:54,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 126 predicate places. [2024-06-21 20:58:54,555 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 132 transitions, 1103 flow [2024-06-21 20:58:54,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 20:58:54,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:54,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:54,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 20:58:54,556 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:54,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:54,556 INFO L85 PathProgramCache]: Analyzing trace with hash 160747325, now seen corresponding path program 5 times [2024-06-21 20:58:54,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:54,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955006902] [2024-06-21 20:58:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:54,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:54,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:55,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:55,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:55,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955006902] [2024-06-21 20:58:55,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955006902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:55,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:55,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:55,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012846458] [2024-06-21 20:58:55,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:55,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:55,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:55,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:55,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:55,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:55,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 132 transitions, 1103 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:55,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:55,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:55,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:55,609 INFO L124 PetriNetUnfolderBase]: 380/669 cut-off events. [2024-06-21 20:58:55,609 INFO L125 PetriNetUnfolderBase]: For 37705/37705 co-relation queries the response was YES. [2024-06-21 20:58:55,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4476 conditions, 669 events. 380/669 cut-off events. For 37705/37705 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2808 event pairs, 64 based on Foata normal form. 1/668 useless extension candidates. Maximal degree in co-relation 4400. Up to 617 conditions per place. [2024-06-21 20:58:55,613 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 115 selfloop transitions, 29 changer transitions 0/146 dead transitions. [2024-06-21 20:58:55,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 146 transitions, 1579 flow [2024-06-21 20:58:55,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:58:55,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:58:55,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 20:58:55,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 20:58:55,615 INFO L175 Difference]: Start difference. First operand has 156 places, 132 transitions, 1103 flow. Second operand 10 states and 110 transitions. [2024-06-21 20:58:55,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 146 transitions, 1579 flow [2024-06-21 20:58:55,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 146 transitions, 1494 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 20:58:55,672 INFO L231 Difference]: Finished difference. Result has 157 places, 136 transitions, 1160 flow [2024-06-21 20:58:55,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1160, PETRI_PLACES=157, PETRI_TRANSITIONS=136} [2024-06-21 20:58:55,672 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-21 20:58:55,672 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 136 transitions, 1160 flow [2024-06-21 20:58:55,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:55,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:55,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:55,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 20:58:55,673 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:55,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:55,673 INFO L85 PathProgramCache]: Analyzing trace with hash 388826105, now seen corresponding path program 6 times [2024-06-21 20:58:55,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:55,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317358070] [2024-06-21 20:58:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:55,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:56,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:56,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317358070] [2024-06-21 20:58:56,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317358070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:56,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:56,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:56,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786600336] [2024-06-21 20:58:56,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:56,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:56,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:56,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:56,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:56,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:56,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 136 transitions, 1160 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:56,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:56,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:56,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:56,597 INFO L124 PetriNetUnfolderBase]: 383/674 cut-off events. [2024-06-21 20:58:56,597 INFO L125 PetriNetUnfolderBase]: For 39207/39207 co-relation queries the response was YES. [2024-06-21 20:58:56,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4529 conditions, 674 events. 383/674 cut-off events. For 39207/39207 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2843 event pairs, 68 based on Foata normal form. 1/673 useless extension candidates. Maximal degree in co-relation 4453. Up to 649 conditions per place. [2024-06-21 20:58:56,601 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 129 selfloop transitions, 15 changer transitions 0/146 dead transitions. [2024-06-21 20:58:56,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 146 transitions, 1506 flow [2024-06-21 20:58:56,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:56,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 20:58:56,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-21 20:58:56,602 INFO L175 Difference]: Start difference. First operand has 157 places, 136 transitions, 1160 flow. Second operand 9 states and 96 transitions. [2024-06-21 20:58:56,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 146 transitions, 1506 flow [2024-06-21 20:58:56,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 146 transitions, 1404 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-21 20:58:56,662 INFO L231 Difference]: Finished difference. Result has 158 places, 138 transitions, 1137 flow [2024-06-21 20:58:56,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1137, PETRI_PLACES=158, PETRI_TRANSITIONS=138} [2024-06-21 20:58:56,663 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 128 predicate places. [2024-06-21 20:58:56,663 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 138 transitions, 1137 flow [2024-06-21 20:58:56,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:56,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:56,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:56,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 20:58:56,664 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:56,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:56,664 INFO L85 PathProgramCache]: Analyzing trace with hash 388832801, now seen corresponding path program 7 times [2024-06-21 20:58:56,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:56,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047493029] [2024-06-21 20:58:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:56,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:57,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:57,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:57,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047493029] [2024-06-21 20:58:57,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047493029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:57,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:57,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:57,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951497408] [2024-06-21 20:58:57,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:57,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:57,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:57,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:57,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:57,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:57,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 138 transitions, 1137 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:57,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:57,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:57,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:57,378 INFO L124 PetriNetUnfolderBase]: 392/689 cut-off events. [2024-06-21 20:58:57,379 INFO L125 PetriNetUnfolderBase]: For 43133/43133 co-relation queries the response was YES. [2024-06-21 20:58:57,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4543 conditions, 689 events. 392/689 cut-off events. For 43133/43133 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2925 event pairs, 64 based on Foata normal form. 3/690 useless extension candidates. Maximal degree in co-relation 4467. Up to 606 conditions per place. [2024-06-21 20:58:57,383 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 22 changer transitions 0/155 dead transitions. [2024-06-21 20:58:57,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 155 transitions, 1607 flow [2024-06-21 20:58:57,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:57,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:57,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-21 20:58:57,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-21 20:58:57,384 INFO L175 Difference]: Start difference. First operand has 158 places, 138 transitions, 1137 flow. Second operand 9 states and 107 transitions. [2024-06-21 20:58:57,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 155 transitions, 1607 flow [2024-06-21 20:58:57,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 155 transitions, 1554 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 20:58:57,442 INFO L231 Difference]: Finished difference. Result has 160 places, 140 transitions, 1161 flow [2024-06-21 20:58:57,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1161, PETRI_PLACES=160, PETRI_TRANSITIONS=140} [2024-06-21 20:58:57,443 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-21 20:58:57,443 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 140 transitions, 1161 flow [2024-06-21 20:58:57,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:57,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:57,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:57,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 20:58:57,444 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:57,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:57,444 INFO L85 PathProgramCache]: Analyzing trace with hash 388826291, now seen corresponding path program 8 times [2024-06-21 20:58:57,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:57,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736495273] [2024-06-21 20:58:57,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:57,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:57,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:57,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:57,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736495273] [2024-06-21 20:58:57,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736495273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:57,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:57,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:57,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068135656] [2024-06-21 20:58:57,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:57,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:57,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:57,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:57,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:58,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:58,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 140 transitions, 1161 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:58,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:58,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:58,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:58,334 INFO L124 PetriNetUnfolderBase]: 386/680 cut-off events. [2024-06-21 20:58:58,335 INFO L125 PetriNetUnfolderBase]: For 41162/41162 co-relation queries the response was YES. [2024-06-21 20:58:58,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4395 conditions, 680 events. 386/680 cut-off events. For 41162/41162 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2907 event pairs, 58 based on Foata normal form. 3/681 useless extension candidates. Maximal degree in co-relation 4318. Up to 602 conditions per place. [2024-06-21 20:58:58,339 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 23 changer transitions 0/154 dead transitions. [2024-06-21 20:58:58,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 154 transitions, 1501 flow [2024-06-21 20:58:58,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-21 20:58:58,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-21 20:58:58,340 INFO L175 Difference]: Start difference. First operand has 160 places, 140 transitions, 1161 flow. Second operand 9 states and 105 transitions. [2024-06-21 20:58:58,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 154 transitions, 1501 flow [2024-06-21 20:58:58,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 154 transitions, 1413 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-21 20:58:58,407 INFO L231 Difference]: Finished difference. Result has 162 places, 140 transitions, 1124 flow [2024-06-21 20:58:58,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1124, PETRI_PLACES=162, PETRI_TRANSITIONS=140} [2024-06-21 20:58:58,408 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-21 20:58:58,408 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 140 transitions, 1124 flow [2024-06-21 20:58:58,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:58,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:58,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:58,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 20:58:58,409 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:58,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash 160752161, now seen corresponding path program 9 times [2024-06-21 20:58:58,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:58,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125263345] [2024-06-21 20:58:58,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:58,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:58,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:58,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:58,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125263345] [2024-06-21 20:58:58,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125263345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:58,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:58,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:58,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267792986] [2024-06-21 20:58:58,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:58,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:58,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:58,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:58,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:58:59,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:58:59,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 140 transitions, 1124 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:59,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:58:59,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:58:59,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:58:59,244 INFO L124 PetriNetUnfolderBase]: 395/695 cut-off events. [2024-06-21 20:58:59,244 INFO L125 PetriNetUnfolderBase]: For 42533/42533 co-relation queries the response was YES. [2024-06-21 20:58:59,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4427 conditions, 695 events. 395/695 cut-off events. For 42533/42533 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2977 event pairs, 54 based on Foata normal form. 3/696 useless extension candidates. Maximal degree in co-relation 4349. Up to 557 conditions per place. [2024-06-21 20:58:59,249 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 119 selfloop transitions, 36 changer transitions 0/157 dead transitions. [2024-06-21 20:58:59,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 157 transitions, 1596 flow [2024-06-21 20:58:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:58:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:58:59,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-21 20:58:59,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-21 20:58:59,250 INFO L175 Difference]: Start difference. First operand has 162 places, 140 transitions, 1124 flow. Second operand 9 states and 109 transitions. [2024-06-21 20:58:59,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 157 transitions, 1596 flow [2024-06-21 20:58:59,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 157 transitions, 1545 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-21 20:58:59,314 INFO L231 Difference]: Finished difference. Result has 163 places, 142 transitions, 1172 flow [2024-06-21 20:58:59,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1172, PETRI_PLACES=163, PETRI_TRANSITIONS=142} [2024-06-21 20:58:59,315 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 133 predicate places. [2024-06-21 20:58:59,315 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 142 transitions, 1172 flow [2024-06-21 20:58:59,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:58:59,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:58:59,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:58:59,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 20:58:59,315 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:58:59,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:58:59,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1901865209, now seen corresponding path program 7 times [2024-06-21 20:58:59,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:58:59,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72530323] [2024-06-21 20:58:59,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:58:59,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:58:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:58:59,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:58:59,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:58:59,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72530323] [2024-06-21 20:58:59,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72530323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:58:59,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:58:59,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:58:59,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427633834] [2024-06-21 20:58:59,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:58:59,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:58:59,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:58:59,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:58:59,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:59:00,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:00,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 142 transitions, 1172 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:59:00,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:00,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:00,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:00,261 INFO L124 PetriNetUnfolderBase]: 393/692 cut-off events. [2024-06-21 20:59:00,262 INFO L125 PetriNetUnfolderBase]: For 40157/40157 co-relation queries the response was YES. [2024-06-21 20:59:00,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4432 conditions, 692 events. 393/692 cut-off events. For 40157/40157 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2952 event pairs, 66 based on Foata normal form. 1/691 useless extension candidates. Maximal degree in co-relation 4353. Up to 652 conditions per place. [2024-06-21 20:59:00,266 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 22 changer transitions 0/150 dead transitions. [2024-06-21 20:59:00,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 150 transitions, 1486 flow [2024-06-21 20:59:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:59:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:59:00,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-21 20:59:00,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-21 20:59:00,271 INFO L175 Difference]: Start difference. First operand has 163 places, 142 transitions, 1172 flow. Second operand 9 states and 100 transitions. [2024-06-21 20:59:00,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 150 transitions, 1486 flow [2024-06-21 20:59:00,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 150 transitions, 1397 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-21 20:59:00,336 INFO L231 Difference]: Finished difference. Result has 166 places, 142 transitions, 1132 flow [2024-06-21 20:59:00,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1132, PETRI_PLACES=166, PETRI_TRANSITIONS=142} [2024-06-21 20:59:00,336 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-21 20:59:00,336 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 142 transitions, 1132 flow [2024-06-21 20:59:00,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:59:00,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:00,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:00,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 20:59:00,337 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:00,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:00,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1901865395, now seen corresponding path program 10 times [2024-06-21 20:59:00,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:00,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429257733] [2024-06-21 20:59:00,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:00,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:00,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:00,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:00,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429257733] [2024-06-21 20:59:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429257733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:00,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 20:59:00,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320155114] [2024-06-21 20:59:00,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:00,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 20:59:00,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:00,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 20:59:00,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 20:59:00,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:00,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 142 transitions, 1132 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:59:00,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:00,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:00,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:01,087 INFO L124 PetriNetUnfolderBase]: 387/683 cut-off events. [2024-06-21 20:59:01,087 INFO L125 PetriNetUnfolderBase]: For 40013/40013 co-relation queries the response was YES. [2024-06-21 20:59:01,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4170 conditions, 683 events. 387/683 cut-off events. For 40013/40013 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2916 event pairs, 60 based on Foata normal form. 3/684 useless extension candidates. Maximal degree in co-relation 4090. Up to 550 conditions per place. [2024-06-21 20:59:01,091 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 123 selfloop transitions, 33 changer transitions 0/158 dead transitions. [2024-06-21 20:59:01,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 158 transitions, 1486 flow [2024-06-21 20:59:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:59:01,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:59:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-21 20:59:01,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-21 20:59:01,092 INFO L175 Difference]: Start difference. First operand has 166 places, 142 transitions, 1132 flow. Second operand 9 states and 112 transitions. [2024-06-21 20:59:01,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 158 transitions, 1486 flow [2024-06-21 20:59:01,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 158 transitions, 1418 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-21 20:59:01,157 INFO L231 Difference]: Finished difference. Result has 167 places, 142 transitions, 1135 flow [2024-06-21 20:59:01,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1135, PETRI_PLACES=167, PETRI_TRANSITIONS=142} [2024-06-21 20:59:01,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-21 20:59:01,157 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 142 transitions, 1135 flow [2024-06-21 20:59:01,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 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) [2024-06-21 20:59:01,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:01,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:01,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 20:59:01,158 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:01,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:01,158 INFO L85 PathProgramCache]: Analyzing trace with hash 518950803, now seen corresponding path program 1 times [2024-06-21 20:59:01,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:01,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919580843] [2024-06-21 20:59:01,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:01,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:02,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:02,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:02,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919580843] [2024-06-21 20:59:02,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919580843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:02,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:02,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:02,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017358881] [2024-06-21 20:59:02,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:02,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:02,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:02,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:02,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:02,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:02,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 142 transitions, 1135 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:02,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:02,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:02,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:02,672 INFO L124 PetriNetUnfolderBase]: 384/678 cut-off events. [2024-06-21 20:59:02,672 INFO L125 PetriNetUnfolderBase]: For 37117/37117 co-relation queries the response was YES. [2024-06-21 20:59:02,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4090 conditions, 678 events. 384/678 cut-off events. For 37117/37117 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2876 event pairs, 58 based on Foata normal form. 2/678 useless extension candidates. Maximal degree in co-relation 4009. Up to 647 conditions per place. [2024-06-21 20:59:02,676 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 136 selfloop transitions, 14 changer transitions 0/152 dead transitions. [2024-06-21 20:59:02,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 152 transitions, 1457 flow [2024-06-21 20:59:02,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 20:59:02,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 20:59:02,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-21 20:59:02,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-21 20:59:02,683 INFO L175 Difference]: Start difference. First operand has 167 places, 142 transitions, 1135 flow. Second operand 9 states and 96 transitions. [2024-06-21 20:59:02,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 152 transitions, 1457 flow [2024-06-21 20:59:02,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 152 transitions, 1365 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-21 20:59:02,747 INFO L231 Difference]: Finished difference. Result has 167 places, 142 transitions, 1075 flow [2024-06-21 20:59:02,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1075, PETRI_PLACES=167, PETRI_TRANSITIONS=142} [2024-06-21 20:59:02,748 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-21 20:59:02,748 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 142 transitions, 1075 flow [2024-06-21 20:59:02,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:02,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:02,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:02,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 20:59:02,749 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:02,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:02,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1384700821, now seen corresponding path program 1 times [2024-06-21 20:59:02,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:02,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834871282] [2024-06-21 20:59:02,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:02,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:03,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:03,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:03,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834871282] [2024-06-21 20:59:03,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834871282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:03,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:03,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:03,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542750826] [2024-06-21 20:59:03,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:03,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:03,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:03,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:03,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:03,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:03,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 142 transitions, 1075 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:03,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:03,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:03,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:03,691 INFO L124 PetriNetUnfolderBase]: 395/699 cut-off events. [2024-06-21 20:59:03,691 INFO L125 PetriNetUnfolderBase]: For 41538/41538 co-relation queries the response was YES. [2024-06-21 20:59:03,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4270 conditions, 699 events. 395/699 cut-off events. For 41538/41538 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3008 event pairs, 39 based on Foata normal form. 2/699 useless extension candidates. Maximal degree in co-relation 4188. Up to 541 conditions per place. [2024-06-21 20:59:03,696 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 130 selfloop transitions, 33 changer transitions 0/165 dead transitions. [2024-06-21 20:59:03,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 165 transitions, 1607 flow [2024-06-21 20:59:03,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:59:03,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:59:03,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 20:59:03,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-21 20:59:03,697 INFO L175 Difference]: Start difference. First operand has 167 places, 142 transitions, 1075 flow. Second operand 11 states and 128 transitions. [2024-06-21 20:59:03,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 165 transitions, 1607 flow [2024-06-21 20:59:03,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 165 transitions, 1573 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 20:59:03,765 INFO L231 Difference]: Finished difference. Result has 171 places, 144 transitions, 1153 flow [2024-06-21 20:59:03,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1153, PETRI_PLACES=171, PETRI_TRANSITIONS=144} [2024-06-21 20:59:03,766 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-06-21 20:59:03,766 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 144 transitions, 1153 flow [2024-06-21 20:59:03,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:03,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:03,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:03,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 20:59:03,767 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:03,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:03,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1392258051, now seen corresponding path program 2 times [2024-06-21 20:59:03,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:03,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373161880] [2024-06-21 20:59:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:03,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:04,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:04,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373161880] [2024-06-21 20:59:04,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373161880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:04,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:04,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265332085] [2024-06-21 20:59:04,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:04,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:04,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:04,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:04,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:04,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:04,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 144 transitions, 1153 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:04,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:04,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:04,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:04,968 INFO L124 PetriNetUnfolderBase]: 399/707 cut-off events. [2024-06-21 20:59:04,968 INFO L125 PetriNetUnfolderBase]: For 43253/43253 co-relation queries the response was YES. [2024-06-21 20:59:04,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4400 conditions, 707 events. 399/707 cut-off events. For 43253/43253 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3080 event pairs, 56 based on Foata normal form. 2/707 useless extension candidates. Maximal degree in co-relation 4317. Up to 579 conditions per place. [2024-06-21 20:59:04,973 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 129 selfloop transitions, 34 changer transitions 0/165 dead transitions. [2024-06-21 20:59:04,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 165 transitions, 1667 flow [2024-06-21 20:59:04,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:59:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:59:04,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-21 20:59:04,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-21 20:59:04,974 INFO L175 Difference]: Start difference. First operand has 171 places, 144 transitions, 1153 flow. Second operand 11 states and 127 transitions. [2024-06-21 20:59:04,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 165 transitions, 1667 flow [2024-06-21 20:59:05,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 165 transitions, 1589 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-21 20:59:05,051 INFO L231 Difference]: Finished difference. Result has 175 places, 145 transitions, 1170 flow [2024-06-21 20:59:05,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1170, PETRI_PLACES=175, PETRI_TRANSITIONS=145} [2024-06-21 20:59:05,052 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-21 20:59:05,052 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 145 transitions, 1170 flow [2024-06-21 20:59:05,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:05,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:05,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:05,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 20:59:05,052 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:05,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:05,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1382823151, now seen corresponding path program 3 times [2024-06-21 20:59:05,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:05,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762247656] [2024-06-21 20:59:05,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:05,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:05,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:05,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762247656] [2024-06-21 20:59:05,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762247656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:05,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:05,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:05,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229277077] [2024-06-21 20:59:05,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:05,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:05,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:05,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:05,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:06,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:06,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 145 transitions, 1170 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:06,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:06,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:06,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:06,356 INFO L124 PetriNetUnfolderBase]: 396/702 cut-off events. [2024-06-21 20:59:06,356 INFO L125 PetriNetUnfolderBase]: For 41878/41878 co-relation queries the response was YES. [2024-06-21 20:59:06,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4266 conditions, 702 events. 396/702 cut-off events. For 41878/41878 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3048 event pairs, 57 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 4181. Up to 605 conditions per place. [2024-06-21 20:59:06,361 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 124 selfloop transitions, 38 changer transitions 0/164 dead transitions. [2024-06-21 20:59:06,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 164 transitions, 1546 flow [2024-06-21 20:59:06,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:59:06,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:59:06,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-21 20:59:06,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 20:59:06,362 INFO L175 Difference]: Start difference. First operand has 175 places, 145 transitions, 1170 flow. Second operand 12 states and 132 transitions. [2024-06-21 20:59:06,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 164 transitions, 1546 flow [2024-06-21 20:59:06,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 164 transitions, 1456 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 20:59:06,434 INFO L231 Difference]: Finished difference. Result has 178 places, 145 transitions, 1160 flow [2024-06-21 20:59:06,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1160, PETRI_PLACES=178, PETRI_TRANSITIONS=145} [2024-06-21 20:59:06,435 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-21 20:59:06,435 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 145 transitions, 1160 flow [2024-06-21 20:59:06,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:06,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:06,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:06,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 20:59:06,435 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:06,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:06,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1382822996, now seen corresponding path program 1 times [2024-06-21 20:59:06,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:06,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599279522] [2024-06-21 20:59:06,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:06,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:07,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:07,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599279522] [2024-06-21 20:59:07,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599279522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:07,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:07,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:07,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630741603] [2024-06-21 20:59:07,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:07,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:07,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:07,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:07,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:07,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:07,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 145 transitions, 1160 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:07,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:07,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:07,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:07,712 INFO L124 PetriNetUnfolderBase]: 405/717 cut-off events. [2024-06-21 20:59:07,712 INFO L125 PetriNetUnfolderBase]: For 44943/44943 co-relation queries the response was YES. [2024-06-21 20:59:07,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 717 events. 405/717 cut-off events. For 44943/44943 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3134 event pairs, 56 based on Foata normal form. 3/718 useless extension candidates. Maximal degree in co-relation 4261. Up to 604 conditions per place. [2024-06-21 20:59:07,717 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 126 selfloop transitions, 42 changer transitions 0/170 dead transitions. [2024-06-21 20:59:07,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 170 transitions, 1592 flow [2024-06-21 20:59:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 20:59:07,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 20:59:07,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-21 20:59:07,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3598014888337469 [2024-06-21 20:59:07,718 INFO L175 Difference]: Start difference. First operand has 178 places, 145 transitions, 1160 flow. Second operand 13 states and 145 transitions. [2024-06-21 20:59:07,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 170 transitions, 1592 flow [2024-06-21 20:59:07,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 170 transitions, 1510 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-21 20:59:07,786 INFO L231 Difference]: Finished difference. Result has 180 places, 148 transitions, 1211 flow [2024-06-21 20:59:07,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1211, PETRI_PLACES=180, PETRI_TRANSITIONS=148} [2024-06-21 20:59:07,787 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-21 20:59:07,787 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 148 transitions, 1211 flow [2024-06-21 20:59:07,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:07,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:07,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:07,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 20:59:07,788 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:07,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:07,788 INFO L85 PathProgramCache]: Analyzing trace with hash -2011358292, now seen corresponding path program 2 times [2024-06-21 20:59:07,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:07,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516170120] [2024-06-21 20:59:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:07,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:08,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:08,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516170120] [2024-06-21 20:59:08,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516170120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:08,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:08,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:08,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84640158] [2024-06-21 20:59:08,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:08,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:08,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:08,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:08,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:08,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:08,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 148 transitions, 1211 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:08,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:08,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:08,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:08,722 INFO L124 PetriNetUnfolderBase]: 414/732 cut-off events. [2024-06-21 20:59:08,722 INFO L125 PetriNetUnfolderBase]: For 46660/46660 co-relation queries the response was YES. [2024-06-21 20:59:08,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4557 conditions, 732 events. 414/732 cut-off events. For 46660/46660 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3216 event pairs, 57 based on Foata normal form. 3/733 useless extension candidates. Maximal degree in co-relation 4470. Up to 479 conditions per place. [2024-06-21 20:59:08,728 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 102 selfloop transitions, 65 changer transitions 0/169 dead transitions. [2024-06-21 20:59:08,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 169 transitions, 1639 flow [2024-06-21 20:59:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:08,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:08,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 20:59:08,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-21 20:59:08,729 INFO L175 Difference]: Start difference. First operand has 180 places, 148 transitions, 1211 flow. Second operand 10 states and 126 transitions. [2024-06-21 20:59:08,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 169 transitions, 1639 flow [2024-06-21 20:59:08,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 169 transitions, 1530 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-21 20:59:08,805 INFO L231 Difference]: Finished difference. Result has 179 places, 151 transitions, 1286 flow [2024-06-21 20:59:08,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1286, PETRI_PLACES=179, PETRI_TRANSITIONS=151} [2024-06-21 20:59:08,807 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-21 20:59:08,807 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 151 transitions, 1286 flow [2024-06-21 20:59:08,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:08,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:08,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:08,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 20:59:08,808 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:08,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:08,808 INFO L85 PathProgramCache]: Analyzing trace with hash 763524820, now seen corresponding path program 3 times [2024-06-21 20:59:08,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:08,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278266720] [2024-06-21 20:59:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:08,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:09,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:09,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278266720] [2024-06-21 20:59:09,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278266720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:09,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:09,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:09,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416338797] [2024-06-21 20:59:09,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:09,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:09,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:09,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:09,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:09,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:09,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 151 transitions, 1286 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:09,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:09,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:09,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:09,784 INFO L124 PetriNetUnfolderBase]: 417/737 cut-off events. [2024-06-21 20:59:09,785 INFO L125 PetriNetUnfolderBase]: For 44494/44494 co-relation queries the response was YES. [2024-06-21 20:59:09,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4716 conditions, 737 events. 417/737 cut-off events. For 44494/44494 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3258 event pairs, 53 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 4628. Up to 592 conditions per place. [2024-06-21 20:59:09,790 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 52 changer transitions 0/182 dead transitions. [2024-06-21 20:59:09,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 182 transitions, 1839 flow [2024-06-21 20:59:09,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:09,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:09,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 20:59:09,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-21 20:59:09,792 INFO L175 Difference]: Start difference. First operand has 179 places, 151 transitions, 1286 flow. Second operand 10 states and 119 transitions. [2024-06-21 20:59:09,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 182 transitions, 1839 flow [2024-06-21 20:59:09,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 182 transitions, 1656 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 20:59:09,870 INFO L231 Difference]: Finished difference. Result has 185 places, 168 transitions, 1430 flow [2024-06-21 20:59:09,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1430, PETRI_PLACES=185, PETRI_TRANSITIONS=168} [2024-06-21 20:59:09,870 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 155 predicate places. [2024-06-21 20:59:09,870 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 168 transitions, 1430 flow [2024-06-21 20:59:09,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:09,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:09,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:09,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 20:59:09,871 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:09,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:09,871 INFO L85 PathProgramCache]: Analyzing trace with hash -2017076087, now seen corresponding path program 4 times [2024-06-21 20:59:09,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:09,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258235371] [2024-06-21 20:59:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:09,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:10,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:10,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:10,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258235371] [2024-06-21 20:59:10,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258235371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:10,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:10,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:10,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527980026] [2024-06-21 20:59:10,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:10,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:10,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:10,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:10,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:10,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:10,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 168 transitions, 1430 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:10,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:10,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:10,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:11,067 INFO L124 PetriNetUnfolderBase]: 428/758 cut-off events. [2024-06-21 20:59:11,067 INFO L125 PetriNetUnfolderBase]: For 51874/51874 co-relation queries the response was YES. [2024-06-21 20:59:11,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5045 conditions, 758 events. 428/758 cut-off events. For 51874/51874 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3376 event pairs, 63 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 4952. Up to 625 conditions per place. [2024-06-21 20:59:11,074 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 136 selfloop transitions, 46 changer transitions 0/184 dead transitions. [2024-06-21 20:59:11,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 184 transitions, 1992 flow [2024-06-21 20:59:11,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:11,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:11,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-21 20:59:11,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-21 20:59:11,089 INFO L175 Difference]: Start difference. First operand has 185 places, 168 transitions, 1430 flow. Second operand 10 states and 119 transitions. [2024-06-21 20:59:11,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 184 transitions, 1992 flow [2024-06-21 20:59:11,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 184 transitions, 1908 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-21 20:59:11,193 INFO L231 Difference]: Finished difference. Result has 191 places, 170 transitions, 1488 flow [2024-06-21 20:59:11,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1488, PETRI_PLACES=191, PETRI_TRANSITIONS=170} [2024-06-21 20:59:11,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-21 20:59:11,194 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 170 transitions, 1488 flow [2024-06-21 20:59:11,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:11,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:11,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:11,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 20:59:11,195 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:11,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:11,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2011565837, now seen corresponding path program 5 times [2024-06-21 20:59:11,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:11,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921417488] [2024-06-21 20:59:11,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:11,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:12,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:12,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:12,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921417488] [2024-06-21 20:59:12,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921417488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:12,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:12,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:12,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736757428] [2024-06-21 20:59:12,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:12,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:12,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:12,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:12,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:12,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:12,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 170 transitions, 1488 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:12,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:12,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:12,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:12,391 INFO L124 PetriNetUnfolderBase]: 432/766 cut-off events. [2024-06-21 20:59:12,391 INFO L125 PetriNetUnfolderBase]: For 53618/53618 co-relation queries the response was YES. [2024-06-21 20:59:12,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5097 conditions, 766 events. 432/766 cut-off events. For 53618/53618 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3438 event pairs, 65 based on Foata normal form. 2/766 useless extension candidates. Maximal degree in co-relation 5003. Up to 660 conditions per place. [2024-06-21 20:59:12,397 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 136 selfloop transitions, 45 changer transitions 0/183 dead transitions. [2024-06-21 20:59:12,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 183 transitions, 1902 flow [2024-06-21 20:59:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:12,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:12,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-21 20:59:12,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 20:59:12,405 INFO L175 Difference]: Start difference. First operand has 191 places, 170 transitions, 1488 flow. Second operand 10 states and 115 transitions. [2024-06-21 20:59:12,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 183 transitions, 1902 flow [2024-06-21 20:59:12,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 183 transitions, 1808 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-21 20:59:12,510 INFO L231 Difference]: Finished difference. Result has 195 places, 171 transitions, 1514 flow [2024-06-21 20:59:12,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1514, PETRI_PLACES=195, PETRI_TRANSITIONS=171} [2024-06-21 20:59:12,511 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-21 20:59:12,512 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 171 transitions, 1514 flow [2024-06-21 20:59:12,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:12,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:12,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:12,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 20:59:12,512 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:12,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:12,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2016928217, now seen corresponding path program 6 times [2024-06-21 20:59:12,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:12,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086991041] [2024-06-21 20:59:12,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:12,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:13,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:13,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:13,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086991041] [2024-06-21 20:59:13,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086991041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:13,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:13,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:13,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19151853] [2024-06-21 20:59:13,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:13,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:13,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:13,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:13,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:13,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:13,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 171 transitions, 1514 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:13,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:13,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:13,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:13,633 INFO L124 PetriNetUnfolderBase]: 439/779 cut-off events. [2024-06-21 20:59:13,633 INFO L125 PetriNetUnfolderBase]: For 54952/54952 co-relation queries the response was YES. [2024-06-21 20:59:13,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5183 conditions, 779 events. 439/779 cut-off events. For 54952/54952 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3520 event pairs, 65 based on Foata normal form. 2/779 useless extension candidates. Maximal degree in co-relation 5087. Up to 673 conditions per place. [2024-06-21 20:59:13,639 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 142 selfloop transitions, 42 changer transitions 0/186 dead transitions. [2024-06-21 20:59:13,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 186 transitions, 1938 flow [2024-06-21 20:59:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:13,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 20:59:13,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-21 20:59:13,641 INFO L175 Difference]: Start difference. First operand has 195 places, 171 transitions, 1514 flow. Second operand 10 states and 116 transitions. [2024-06-21 20:59:13,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 186 transitions, 1938 flow [2024-06-21 20:59:13,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 186 transitions, 1838 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 20:59:13,741 INFO L231 Difference]: Finished difference. Result has 198 places, 174 transitions, 1539 flow [2024-06-21 20:59:13,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1539, PETRI_PLACES=198, PETRI_TRANSITIONS=174} [2024-06-21 20:59:13,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 168 predicate places. [2024-06-21 20:59:13,742 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 174 transitions, 1539 flow [2024-06-21 20:59:13,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:13,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:13,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:13,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 20:59:13,743 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:13,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:13,743 INFO L85 PathProgramCache]: Analyzing trace with hash 763519240, now seen corresponding path program 4 times [2024-06-21 20:59:13,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:13,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698904608] [2024-06-21 20:59:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:13,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:14,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698904608] [2024-06-21 20:59:14,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698904608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:14,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:14,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:14,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338086375] [2024-06-21 20:59:14,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:14,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:14,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:14,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:14,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:14,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:14,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 174 transitions, 1539 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:14,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:14,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:14,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:14,895 INFO L124 PetriNetUnfolderBase]: 456/807 cut-off events. [2024-06-21 20:59:14,896 INFO L125 PetriNetUnfolderBase]: For 61329/61329 co-relation queries the response was YES. [2024-06-21 20:59:14,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5455 conditions, 807 events. 456/807 cut-off events. For 61329/61329 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3675 event pairs, 59 based on Foata normal form. 3/808 useless extension candidates. Maximal degree in co-relation 5357. Up to 517 conditions per place. [2024-06-21 20:59:14,903 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 115 selfloop transitions, 85 changer transitions 0/202 dead transitions. [2024-06-21 20:59:14,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 202 transitions, 2205 flow [2024-06-21 20:59:14,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:59:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:59:14,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 20:59:14,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-21 20:59:14,904 INFO L175 Difference]: Start difference. First operand has 198 places, 174 transitions, 1539 flow. Second operand 11 states and 143 transitions. [2024-06-21 20:59:14,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 202 transitions, 2205 flow [2024-06-21 20:59:14,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 202 transitions, 2112 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 20:59:15,001 INFO L231 Difference]: Finished difference. Result has 204 places, 182 transitions, 1783 flow [2024-06-21 20:59:15,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1783, PETRI_PLACES=204, PETRI_TRANSITIONS=182} [2024-06-21 20:59:15,002 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-21 20:59:15,002 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 182 transitions, 1783 flow [2024-06-21 20:59:15,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:15,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:15,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:15,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 20:59:15,003 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:15,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:15,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2016928062, now seen corresponding path program 5 times [2024-06-21 20:59:15,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:15,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584685940] [2024-06-21 20:59:15,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:15,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:15,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:15,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:15,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584685940] [2024-06-21 20:59:15,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584685940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:15,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:15,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:15,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300414376] [2024-06-21 20:59:15,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:15,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:15,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:15,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:15,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:15,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:15,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 182 transitions, 1783 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:15,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:15,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:15,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:16,103 INFO L124 PetriNetUnfolderBase]: 465/822 cut-off events. [2024-06-21 20:59:16,103 INFO L125 PetriNetUnfolderBase]: For 64090/64090 co-relation queries the response was YES. [2024-06-21 20:59:16,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5933 conditions, 822 events. 465/822 cut-off events. For 64090/64090 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3749 event pairs, 59 based on Foata normal form. 3/823 useless extension candidates. Maximal degree in co-relation 5832. Up to 544 conditions per place. [2024-06-21 20:59:16,110 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 126 selfloop transitions, 77 changer transitions 0/205 dead transitions. [2024-06-21 20:59:16,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 205 transitions, 2434 flow [2024-06-21 20:59:16,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:59:16,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:59:16,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 20:59:16,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-21 20:59:16,112 INFO L175 Difference]: Start difference. First operand has 204 places, 182 transitions, 1783 flow. Second operand 11 states and 141 transitions. [2024-06-21 20:59:16,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 205 transitions, 2434 flow [2024-06-21 20:59:16,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 205 transitions, 2333 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-21 20:59:16,208 INFO L231 Difference]: Finished difference. Result has 209 places, 185 transitions, 1908 flow [2024-06-21 20:59:16,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1908, PETRI_PLACES=209, PETRI_TRANSITIONS=185} [2024-06-21 20:59:16,209 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2024-06-21 20:59:16,209 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 185 transitions, 1908 flow [2024-06-21 20:59:16,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:16,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:16,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:16,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 20:59:16,210 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:16,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:16,210 INFO L85 PathProgramCache]: Analyzing trace with hash 758012710, now seen corresponding path program 6 times [2024-06-21 20:59:16,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:16,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771818901] [2024-06-21 20:59:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:16,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:16,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:16,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771818901] [2024-06-21 20:59:16,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771818901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:16,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:16,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:16,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713800971] [2024-06-21 20:59:16,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:16,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:16,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:16,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:16,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:16,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:16,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 185 transitions, 1908 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:16,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:16,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:16,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:17,342 INFO L124 PetriNetUnfolderBase]: 468/827 cut-off events. [2024-06-21 20:59:17,342 INFO L125 PetriNetUnfolderBase]: For 59797/59797 co-relation queries the response was YES. [2024-06-21 20:59:17,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6070 conditions, 827 events. 468/827 cut-off events. For 59797/59797 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3778 event pairs, 59 based on Foata normal form. 1/826 useless extension candidates. Maximal degree in co-relation 5966. Up to 512 conditions per place. [2024-06-21 20:59:17,349 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 115 selfloop transitions, 92 changer transitions 0/209 dead transitions. [2024-06-21 20:59:17,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 209 transitions, 2557 flow [2024-06-21 20:59:17,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:59:17,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:59:17,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 20:59:17,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41397849462365593 [2024-06-21 20:59:17,350 INFO L175 Difference]: Start difference. First operand has 209 places, 185 transitions, 1908 flow. Second operand 12 states and 154 transitions. [2024-06-21 20:59:17,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 209 transitions, 2557 flow [2024-06-21 20:59:17,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 209 transitions, 2361 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-21 20:59:17,454 INFO L231 Difference]: Finished difference. Result has 212 places, 187 transitions, 1951 flow [2024-06-21 20:59:17,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1951, PETRI_PLACES=212, PETRI_TRANSITIONS=187} [2024-06-21 20:59:17,454 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-21 20:59:17,455 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 187 transitions, 1951 flow [2024-06-21 20:59:17,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:17,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:17,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:17,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 20:59:17,455 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:17,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:17,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2017072367, now seen corresponding path program 7 times [2024-06-21 20:59:17,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:17,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065335659] [2024-06-21 20:59:17,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:17,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:18,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:18,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:18,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065335659] [2024-06-21 20:59:18,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065335659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:18,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:18,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:18,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354512804] [2024-06-21 20:59:18,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:18,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:18,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:18,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:18,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:18,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:18,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 187 transitions, 1951 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:18,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:18,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:18,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:18,340 INFO L124 PetriNetUnfolderBase]: 465/822 cut-off events. [2024-06-21 20:59:18,340 INFO L125 PetriNetUnfolderBase]: For 58863/58863 co-relation queries the response was YES. [2024-06-21 20:59:18,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5925 conditions, 822 events. 465/822 cut-off events. For 58863/58863 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3765 event pairs, 64 based on Foata normal form. 2/822 useless extension candidates. Maximal degree in co-relation 5820. Up to 707 conditions per place. [2024-06-21 20:59:18,347 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 150 selfloop transitions, 47 changer transitions 0/199 dead transitions. [2024-06-21 20:59:18,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 199 transitions, 2373 flow [2024-06-21 20:59:18,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:18,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-21 20:59:18,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-21 20:59:18,348 INFO L175 Difference]: Start difference. First operand has 212 places, 187 transitions, 1951 flow. Second operand 10 states and 117 transitions. [2024-06-21 20:59:18,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 199 transitions, 2373 flow [2024-06-21 20:59:18,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 199 transitions, 2154 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-21 20:59:18,468 INFO L231 Difference]: Finished difference. Result has 212 places, 187 transitions, 1830 flow [2024-06-21 20:59:18,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1732, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1830, PETRI_PLACES=212, PETRI_TRANSITIONS=187} [2024-06-21 20:59:18,468 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-21 20:59:18,468 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 187 transitions, 1830 flow [2024-06-21 20:59:18,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:18,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:18,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:18,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 20:59:18,469 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:18,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:18,469 INFO L85 PathProgramCache]: Analyzing trace with hash -226493479, now seen corresponding path program 1 times [2024-06-21 20:59:18,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:18,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973223112] [2024-06-21 20:59:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:18,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:18,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:19,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:19,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973223112] [2024-06-21 20:59:19,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973223112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:19,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:19,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:19,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895997190] [2024-06-21 20:59:19,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:19,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:19,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:19,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:19,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:19,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:19,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 187 transitions, 1830 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:19,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:19,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:19,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:19,547 INFO L124 PetriNetUnfolderBase]: 459/813 cut-off events. [2024-06-21 20:59:19,547 INFO L125 PetriNetUnfolderBase]: For 55270/55270 co-relation queries the response was YES. [2024-06-21 20:59:19,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5520 conditions, 813 events. 459/813 cut-off events. For 55270/55270 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3728 event pairs, 65 based on Foata normal form. 3/814 useless extension candidates. Maximal degree in co-relation 5414. Up to 768 conditions per place. [2024-06-21 20:59:19,554 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 177 selfloop transitions, 21 changer transitions 0/200 dead transitions. [2024-06-21 20:59:19,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 200 transitions, 2290 flow [2024-06-21 20:59:19,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:19,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 20:59:19,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-21 20:59:19,555 INFO L175 Difference]: Start difference. First operand has 212 places, 187 transitions, 1830 flow. Second operand 10 states and 108 transitions. [2024-06-21 20:59:19,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 200 transitions, 2290 flow [2024-06-21 20:59:19,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 200 transitions, 2162 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-21 20:59:19,676 INFO L231 Difference]: Finished difference. Result has 212 places, 189 transitions, 1791 flow [2024-06-21 20:59:19,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1791, PETRI_PLACES=212, PETRI_TRANSITIONS=189} [2024-06-21 20:59:19,677 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-21 20:59:19,677 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 189 transitions, 1791 flow [2024-06-21 20:59:19,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:19,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:19,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:19,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 20:59:19,678 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:19,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:19,678 INFO L85 PathProgramCache]: Analyzing trace with hash 160848146, now seen corresponding path program 7 times [2024-06-21 20:59:19,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:19,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313896314] [2024-06-21 20:59:19,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:19,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:20,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:20,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313896314] [2024-06-21 20:59:20,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313896314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:20,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:20,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:20,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64336562] [2024-06-21 20:59:20,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:20,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:20,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:20,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:20,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:20,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:20,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 189 transitions, 1791 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:20,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:20,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:20,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:21,005 INFO L124 PetriNetUnfolderBase]: 472/834 cut-off events. [2024-06-21 20:59:21,006 INFO L125 PetriNetUnfolderBase]: For 56950/56950 co-relation queries the response was YES. [2024-06-21 20:59:21,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5806 conditions, 834 events. 472/834 cut-off events. For 56950/56950 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3842 event pairs, 57 based on Foata normal form. 1/833 useless extension candidates. Maximal degree in co-relation 5700. Up to 701 conditions per place. [2024-06-21 20:59:21,013 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 165 selfloop transitions, 48 changer transitions 0/215 dead transitions. [2024-06-21 20:59:21,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 215 transitions, 2539 flow [2024-06-21 20:59:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:59:21,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:59:21,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 20:59:21,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-21 20:59:21,014 INFO L175 Difference]: Start difference. First operand has 212 places, 189 transitions, 1791 flow. Second operand 12 states and 139 transitions. [2024-06-21 20:59:21,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 215 transitions, 2539 flow [2024-06-21 20:59:21,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 215 transitions, 2461 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-21 20:59:21,134 INFO L231 Difference]: Finished difference. Result has 218 places, 200 transitions, 2007 flow [2024-06-21 20:59:21,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2007, PETRI_PLACES=218, PETRI_TRANSITIONS=200} [2024-06-21 20:59:21,135 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-21 20:59:21,135 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 200 transitions, 2007 flow [2024-06-21 20:59:21,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:21,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:21,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:21,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 20:59:21,136 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:21,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:21,136 INFO L85 PathProgramCache]: Analyzing trace with hash 160992141, now seen corresponding path program 8 times [2024-06-21 20:59:21,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:21,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916511231] [2024-06-21 20:59:21,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:21,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:21,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:21,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:21,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916511231] [2024-06-21 20:59:21,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916511231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:21,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:21,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:21,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136339219] [2024-06-21 20:59:21,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:21,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:21,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:21,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:22,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:22,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 200 transitions, 2007 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:22,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:22,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:22,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:22,338 INFO L124 PetriNetUnfolderBase]: 476/842 cut-off events. [2024-06-21 20:59:22,338 INFO L125 PetriNetUnfolderBase]: For 61754/61754 co-relation queries the response was YES. [2024-06-21 20:59:22,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6017 conditions, 842 events. 476/842 cut-off events. For 61754/61754 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3890 event pairs, 62 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 5908. Up to 796 conditions per place. [2024-06-21 20:59:22,346 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 185 selfloop transitions, 24 changer transitions 0/211 dead transitions. [2024-06-21 20:59:22,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 211 transitions, 2471 flow [2024-06-21 20:59:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:22,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 20:59:22,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-21 20:59:22,347 INFO L175 Difference]: Start difference. First operand has 218 places, 200 transitions, 2007 flow. Second operand 10 states and 108 transitions. [2024-06-21 20:59:22,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 211 transitions, 2471 flow [2024-06-21 20:59:22,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 211 transitions, 2355 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-21 20:59:22,474 INFO L231 Difference]: Finished difference. Result has 222 places, 201 transitions, 1969 flow [2024-06-21 20:59:22,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1969, PETRI_PLACES=222, PETRI_TRANSITIONS=201} [2024-06-21 20:59:22,476 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-21 20:59:22,476 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 201 transitions, 1969 flow [2024-06-21 20:59:22,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:22,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:22,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:22,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 20:59:22,477 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:22,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:22,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1101936366, now seen corresponding path program 8 times [2024-06-21 20:59:22,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:22,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009485241] [2024-06-21 20:59:22,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:22,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:23,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:23,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009485241] [2024-06-21 20:59:23,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009485241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:23,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:23,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:23,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844286667] [2024-06-21 20:59:23,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:23,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:23,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:23,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:23,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:23,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:23,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 201 transitions, 1969 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:23,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:23,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:23,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:23,644 INFO L124 PetriNetUnfolderBase]: 485/857 cut-off events. [2024-06-21 20:59:23,645 INFO L125 PetriNetUnfolderBase]: For 65947/65947 co-relation queries the response was YES. [2024-06-21 20:59:23,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6176 conditions, 857 events. 485/857 cut-off events. For 65947/65947 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3960 event pairs, 60 based on Foata normal form. 3/858 useless extension candidates. Maximal degree in co-relation 6066. Up to 805 conditions per place. [2024-06-21 20:59:23,652 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 196 selfloop transitions, 21 changer transitions 0/219 dead transitions. [2024-06-21 20:59:23,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 219 transitions, 2552 flow [2024-06-21 20:59:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:23,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:23,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 20:59:23,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 20:59:23,653 INFO L175 Difference]: Start difference. First operand has 222 places, 201 transitions, 1969 flow. Second operand 10 states and 111 transitions. [2024-06-21 20:59:23,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 219 transitions, 2552 flow [2024-06-21 20:59:23,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 219 transitions, 2484 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 20:59:23,794 INFO L231 Difference]: Finished difference. Result has 224 places, 205 transitions, 2061 flow [2024-06-21 20:59:23,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2061, PETRI_PLACES=224, PETRI_TRANSITIONS=205} [2024-06-21 20:59:23,795 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-21 20:59:23,795 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 205 transitions, 2061 flow [2024-06-21 20:59:23,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:23,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:23,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:23,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 20:59:23,796 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:23,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash 688200465, now seen corresponding path program 9 times [2024-06-21 20:59:23,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:23,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116746426] [2024-06-21 20:59:23,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:23,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:24,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:24,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116746426] [2024-06-21 20:59:24,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116746426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:24,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:24,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:24,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788965224] [2024-06-21 20:59:24,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:24,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:24,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:24,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:24,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:24,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:24,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 205 transitions, 2061 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:24,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:24,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:24,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:24,921 INFO L124 PetriNetUnfolderBase]: 489/865 cut-off events. [2024-06-21 20:59:24,921 INFO L125 PetriNetUnfolderBase]: For 65354/65354 co-relation queries the response was YES. [2024-06-21 20:59:24,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6263 conditions, 865 events. 489/865 cut-off events. For 65354/65354 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4035 event pairs, 66 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 6152. Up to 807 conditions per place. [2024-06-21 20:59:24,928 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 31 changer transitions 0/216 dead transitions. [2024-06-21 20:59:24,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 216 transitions, 2537 flow [2024-06-21 20:59:24,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 20:59:24,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 20:59:24,930 INFO L175 Difference]: Start difference. First operand has 224 places, 205 transitions, 2061 flow. Second operand 10 states and 109 transitions. [2024-06-21 20:59:24,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 216 transitions, 2537 flow [2024-06-21 20:59:25,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 216 transitions, 2417 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-21 20:59:25,068 INFO L231 Difference]: Finished difference. Result has 226 places, 206 transitions, 2035 flow [2024-06-21 20:59:25,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2035, PETRI_PLACES=226, PETRI_TRANSITIONS=206} [2024-06-21 20:59:25,068 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-21 20:59:25,068 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 206 transitions, 2035 flow [2024-06-21 20:59:25,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:25,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:25,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:25,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 20:59:25,069 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:25,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:25,069 INFO L85 PathProgramCache]: Analyzing trace with hash 688196745, now seen corresponding path program 10 times [2024-06-21 20:59:25,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:25,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528176469] [2024-06-21 20:59:25,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:25,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:25,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:25,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528176469] [2024-06-21 20:59:25,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528176469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:25,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:25,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:25,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034533515] [2024-06-21 20:59:25,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:25,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:25,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:25,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:25,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:25,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:25,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 206 transitions, 2035 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:25,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:25,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:25,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:26,131 INFO L124 PetriNetUnfolderBase]: 493/873 cut-off events. [2024-06-21 20:59:26,131 INFO L125 PetriNetUnfolderBase]: For 66917/66917 co-relation queries the response was YES. [2024-06-21 20:59:26,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6275 conditions, 873 events. 493/873 cut-off events. For 66917/66917 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4089 event pairs, 64 based on Foata normal form. 2/873 useless extension candidates. Maximal degree in co-relation 6163. Up to 784 conditions per place. [2024-06-21 20:59:26,137 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 183 selfloop transitions, 34 changer transitions 0/219 dead transitions. [2024-06-21 20:59:26,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 219 transitions, 2667 flow [2024-06-21 20:59:26,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:26,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:26,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-21 20:59:26,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-21 20:59:26,138 INFO L175 Difference]: Start difference. First operand has 226 places, 206 transitions, 2035 flow. Second operand 10 states and 111 transitions. [2024-06-21 20:59:26,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 219 transitions, 2667 flow [2024-06-21 20:59:26,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 219 transitions, 2576 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 20:59:26,267 INFO L231 Difference]: Finished difference. Result has 228 places, 207 transitions, 2044 flow [2024-06-21 20:59:26,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2044, PETRI_PLACES=228, PETRI_TRANSITIONS=207} [2024-06-21 20:59:26,268 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-21 20:59:26,268 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 207 transitions, 2044 flow [2024-06-21 20:59:26,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:26,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:26,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:26,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 20:59:26,268 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:26,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:26,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1797511898, now seen corresponding path program 9 times [2024-06-21 20:59:26,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:26,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692845711] [2024-06-21 20:59:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:26,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:26,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:26,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692845711] [2024-06-21 20:59:26,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692845711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:26,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:26,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:26,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343587905] [2024-06-21 20:59:26,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:26,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:26,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:26,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:26,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:27,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:27,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 207 transitions, 2044 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:27,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:27,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:27,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:27,448 INFO L124 PetriNetUnfolderBase]: 502/888 cut-off events. [2024-06-21 20:59:27,448 INFO L125 PetriNetUnfolderBase]: For 71929/71929 co-relation queries the response was YES. [2024-06-21 20:59:27,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6435 conditions, 888 events. 502/888 cut-off events. For 71929/71929 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4189 event pairs, 60 based on Foata normal form. 3/889 useless extension candidates. Maximal degree in co-relation 6322. Up to 799 conditions per place. [2024-06-21 20:59:27,456 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 197 selfloop transitions, 30 changer transitions 0/229 dead transitions. [2024-06-21 20:59:27,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 229 transitions, 2681 flow [2024-06-21 20:59:27,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:27,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-21 20:59:27,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-21 20:59:27,461 INFO L175 Difference]: Start difference. First operand has 228 places, 207 transitions, 2044 flow. Second operand 10 states and 117 transitions. [2024-06-21 20:59:27,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 229 transitions, 2681 flow [2024-06-21 20:59:27,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 229 transitions, 2549 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-21 20:59:27,585 INFO L231 Difference]: Finished difference. Result has 229 places, 211 transitions, 2098 flow [2024-06-21 20:59:27,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2098, PETRI_PLACES=229, PETRI_TRANSITIONS=211} [2024-06-21 20:59:27,586 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-21 20:59:27,586 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 211 transitions, 2098 flow [2024-06-21 20:59:27,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:27,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:27,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:27,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 20:59:27,586 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:27,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:27,587 INFO L85 PathProgramCache]: Analyzing trace with hash 887652140, now seen corresponding path program 10 times [2024-06-21 20:59:27,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:27,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180101423] [2024-06-21 20:59:27,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:27,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:28,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:28,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180101423] [2024-06-21 20:59:28,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180101423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:28,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:28,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:28,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533233102] [2024-06-21 20:59:28,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:28,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:28,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:28,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:28,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:28,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:28,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 211 transitions, 2098 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:28,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:28,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:28,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:28,565 INFO L124 PetriNetUnfolderBase]: 511/903 cut-off events. [2024-06-21 20:59:28,566 INFO L125 PetriNetUnfolderBase]: For 74464/74464 co-relation queries the response was YES. [2024-06-21 20:59:28,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6509 conditions, 903 events. 511/903 cut-off events. For 74464/74464 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4279 event pairs, 60 based on Foata normal form. 3/904 useless extension candidates. Maximal degree in co-relation 6397. Up to 814 conditions per place. [2024-06-21 20:59:28,573 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 197 selfloop transitions, 32 changer transitions 0/231 dead transitions. [2024-06-21 20:59:28,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 231 transitions, 2732 flow [2024-06-21 20:59:28,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:28,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:28,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-21 20:59:28,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-21 20:59:28,580 INFO L175 Difference]: Start difference. First operand has 229 places, 211 transitions, 2098 flow. Second operand 10 states and 116 transitions. [2024-06-21 20:59:28,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 231 transitions, 2732 flow [2024-06-21 20:59:28,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 231 transitions, 2539 flow, removed 50 selfloop flow, removed 10 redundant places. [2024-06-21 20:59:28,725 INFO L231 Difference]: Finished difference. Result has 229 places, 215 transitions, 2103 flow [2024-06-21 20:59:28,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1907, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2103, PETRI_PLACES=229, PETRI_TRANSITIONS=215} [2024-06-21 20:59:28,725 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-21 20:59:28,726 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 215 transitions, 2103 flow [2024-06-21 20:59:28,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:28,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:28,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:28,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 20:59:28,726 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:28,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:28,726 INFO L85 PathProgramCache]: Analyzing trace with hash 887646560, now seen corresponding path program 11 times [2024-06-21 20:59:28,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:28,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063269574] [2024-06-21 20:59:28,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:28,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:29,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:29,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:29,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063269574] [2024-06-21 20:59:29,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063269574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:29,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:29,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:29,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522923279] [2024-06-21 20:59:29,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:29,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:29,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:29,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:29,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:29,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:29,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 215 transitions, 2103 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:29,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:29,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:29,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:29,731 INFO L124 PetriNetUnfolderBase]: 514/908 cut-off events. [2024-06-21 20:59:29,732 INFO L125 PetriNetUnfolderBase]: For 70029/70029 co-relation queries the response was YES. [2024-06-21 20:59:29,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6423 conditions, 908 events. 514/908 cut-off events. For 70029/70029 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4300 event pairs, 70 based on Foata normal form. 1/907 useless extension candidates. Maximal degree in co-relation 6312. Up to 853 conditions per place. [2024-06-21 20:59:29,739 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 196 selfloop transitions, 30 changer transitions 0/228 dead transitions. [2024-06-21 20:59:29,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 228 transitions, 2648 flow [2024-06-21 20:59:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:59:29,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:59:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 20:59:29,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-21 20:59:29,741 INFO L175 Difference]: Start difference. First operand has 229 places, 215 transitions, 2103 flow. Second operand 11 states and 116 transitions. [2024-06-21 20:59:29,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 228 transitions, 2648 flow [2024-06-21 20:59:29,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 228 transitions, 2492 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-21 20:59:29,881 INFO L231 Difference]: Finished difference. Result has 234 places, 219 transitions, 2107 flow [2024-06-21 20:59:29,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2107, PETRI_PLACES=234, PETRI_TRANSITIONS=219} [2024-06-21 20:59:29,881 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-21 20:59:29,882 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 219 transitions, 2107 flow [2024-06-21 20:59:29,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:29,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:29,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:29,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 20:59:29,882 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:29,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:29,883 INFO L85 PathProgramCache]: Analyzing trace with hash 166562066, now seen corresponding path program 12 times [2024-06-21 20:59:29,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:29,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176305635] [2024-06-21 20:59:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:29,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:30,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:30,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:30,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176305635] [2024-06-21 20:59:30,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176305635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:30,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:30,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:30,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142708454] [2024-06-21 20:59:30,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:30,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:30,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:30,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:30,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:30,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:30,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 219 transitions, 2107 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:30,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:30,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:30,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:31,000 INFO L124 PetriNetUnfolderBase]: 523/923 cut-off events. [2024-06-21 20:59:31,000 INFO L125 PetriNetUnfolderBase]: For 77874/77874 co-relation queries the response was YES. [2024-06-21 20:59:31,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6550 conditions, 923 events. 523/923 cut-off events. For 77874/77874 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4387 event pairs, 64 based on Foata normal form. 3/924 useless extension candidates. Maximal degree in co-relation 6436. Up to 779 conditions per place. [2024-06-21 20:59:31,009 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 190 selfloop transitions, 45 changer transitions 0/237 dead transitions. [2024-06-21 20:59:31,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 237 transitions, 2750 flow [2024-06-21 20:59:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:31,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:31,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-21 20:59:31,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 20:59:31,010 INFO L175 Difference]: Start difference. First operand has 234 places, 219 transitions, 2107 flow. Second operand 10 states and 120 transitions. [2024-06-21 20:59:31,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 237 transitions, 2750 flow [2024-06-21 20:59:31,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 237 transitions, 2671 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-21 20:59:31,154 INFO L231 Difference]: Finished difference. Result has 238 places, 223 transitions, 2262 flow [2024-06-21 20:59:31,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2262, PETRI_PLACES=238, PETRI_TRANSITIONS=223} [2024-06-21 20:59:31,154 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-21 20:59:31,155 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 223 transitions, 2262 flow [2024-06-21 20:59:31,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:31,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:31,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:31,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 20:59:31,155 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:31,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash 693706995, now seen corresponding path program 11 times [2024-06-21 20:59:31,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:31,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298020378] [2024-06-21 20:59:31,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:31,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:31,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:31,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298020378] [2024-06-21 20:59:31,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298020378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:31,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:31,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6208169] [2024-06-21 20:59:31,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:31,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:31,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:31,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:32,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:32,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 223 transitions, 2262 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:32,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:32,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:32,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:32,334 INFO L124 PetriNetUnfolderBase]: 527/931 cut-off events. [2024-06-21 20:59:32,334 INFO L125 PetriNetUnfolderBase]: For 77085/77085 co-relation queries the response was YES. [2024-06-21 20:59:32,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6678 conditions, 931 events. 527/931 cut-off events. For 77085/77085 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4441 event pairs, 72 based on Foata normal form. 2/931 useless extension candidates. Maximal degree in co-relation 6563. Up to 885 conditions per place. [2024-06-21 20:59:32,343 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 209 selfloop transitions, 23 changer transitions 0/234 dead transitions. [2024-06-21 20:59:32,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 234 transitions, 2767 flow [2024-06-21 20:59:32,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:32,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:32,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-21 20:59:32,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-21 20:59:32,345 INFO L175 Difference]: Start difference. First operand has 238 places, 223 transitions, 2262 flow. Second operand 10 states and 109 transitions. [2024-06-21 20:59:32,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 234 transitions, 2767 flow [2024-06-21 20:59:32,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 234 transitions, 2573 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-21 20:59:32,492 INFO L231 Difference]: Finished difference. Result has 240 places, 224 transitions, 2139 flow [2024-06-21 20:59:32,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2068, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2139, PETRI_PLACES=240, PETRI_TRANSITIONS=224} [2024-06-21 20:59:32,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-21 20:59:32,493 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 224 transitions, 2139 flow [2024-06-21 20:59:32,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:32,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:32,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:32,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 20:59:32,493 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:32,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:32,494 INFO L85 PathProgramCache]: Analyzing trace with hash 887646405, now seen corresponding path program 12 times [2024-06-21 20:59:32,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:32,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458599732] [2024-06-21 20:59:32,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:32,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:33,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:33,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:33,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458599732] [2024-06-21 20:59:33,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458599732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:33,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:33,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:33,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466523445] [2024-06-21 20:59:33,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:33,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:33,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:33,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:33,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:33,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:33,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 224 transitions, 2139 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:33,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:33,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:33,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:33,717 INFO L124 PetriNetUnfolderBase]: 524/926 cut-off events. [2024-06-21 20:59:33,718 INFO L125 PetriNetUnfolderBase]: For 71720/71720 co-relation queries the response was YES. [2024-06-21 20:59:33,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6334 conditions, 926 events. 524/926 cut-off events. For 71720/71720 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4417 event pairs, 71 based on Foata normal form. 2/926 useless extension candidates. Maximal degree in co-relation 6218. Up to 895 conditions per place. [2024-06-21 20:59:33,726 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 216 selfloop transitions, 16 changer transitions 0/234 dead transitions. [2024-06-21 20:59:33,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 234 transitions, 2625 flow [2024-06-21 20:59:33,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:33,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 20:59:33,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-21 20:59:33,727 INFO L175 Difference]: Start difference. First operand has 240 places, 224 transitions, 2139 flow. Second operand 10 states and 105 transitions. [2024-06-21 20:59:33,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 234 transitions, 2625 flow [2024-06-21 20:59:33,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 234 transitions, 2553 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 20:59:33,874 INFO L231 Difference]: Finished difference. Result has 242 places, 224 transitions, 2103 flow [2024-06-21 20:59:33,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2103, PETRI_PLACES=242, PETRI_TRANSITIONS=224} [2024-06-21 20:59:33,875 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-21 20:59:33,875 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 224 transitions, 2103 flow [2024-06-21 20:59:33,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:33,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:33,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:33,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 20:59:33,875 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:33,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:33,876 INFO L85 PathProgramCache]: Analyzing trace with hash 166360256, now seen corresponding path program 13 times [2024-06-21 20:59:33,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:33,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586785850] [2024-06-21 20:59:33,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:33,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:34,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:34,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586785850] [2024-06-21 20:59:34,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586785850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:34,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:34,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:34,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402758245] [2024-06-21 20:59:34,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:34,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:34,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:34,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:34,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:34,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:34,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 224 transitions, 2103 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:34,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:34,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:34,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:34,811 INFO L124 PetriNetUnfolderBase]: 533/941 cut-off events. [2024-06-21 20:59:34,811 INFO L125 PetriNetUnfolderBase]: For 77391/77391 co-relation queries the response was YES. [2024-06-21 20:59:34,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6490 conditions, 941 events. 533/941 cut-off events. For 77391/77391 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4529 event pairs, 63 based on Foata normal form. 3/942 useless extension candidates. Maximal degree in co-relation 6373. Up to 797 conditions per place. [2024-06-21 20:59:34,820 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 197 selfloop transitions, 44 changer transitions 0/243 dead transitions. [2024-06-21 20:59:34,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 243 transitions, 2770 flow [2024-06-21 20:59:34,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:34,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:34,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 20:59:34,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-21 20:59:34,821 INFO L175 Difference]: Start difference. First operand has 242 places, 224 transitions, 2103 flow. Second operand 10 states and 123 transitions. [2024-06-21 20:59:34,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 243 transitions, 2770 flow [2024-06-21 20:59:34,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 243 transitions, 2675 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 20:59:34,975 INFO L231 Difference]: Finished difference. Result has 242 places, 228 transitions, 2248 flow [2024-06-21 20:59:34,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2248, PETRI_PLACES=242, PETRI_TRANSITIONS=228} [2024-06-21 20:59:34,976 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-21 20:59:34,976 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 228 transitions, 2248 flow [2024-06-21 20:59:34,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:34,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:34,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:34,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 20:59:34,976 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:34,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:34,977 INFO L85 PathProgramCache]: Analyzing trace with hash 693707150, now seen corresponding path program 14 times [2024-06-21 20:59:34,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:34,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129169901] [2024-06-21 20:59:34,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:34,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:35,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:35,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:35,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129169901] [2024-06-21 20:59:35,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129169901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:35,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:35,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 20:59:35,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086601762] [2024-06-21 20:59:35,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:35,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 20:59:35,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:35,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 20:59:35,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 20:59:35,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:35,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 228 transitions, 2248 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:35,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:35,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:35,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:36,137 INFO L124 PetriNetUnfolderBase]: 531/938 cut-off events. [2024-06-21 20:59:36,137 INFO L125 PetriNetUnfolderBase]: For 70017/70017 co-relation queries the response was YES. [2024-06-21 20:59:36,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6437 conditions, 938 events. 531/938 cut-off events. For 70017/70017 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4504 event pairs, 63 based on Foata normal form. 1/937 useless extension candidates. Maximal degree in co-relation 6319. Up to 777 conditions per place. [2024-06-21 20:59:36,146 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 192 selfloop transitions, 52 changer transitions 0/246 dead transitions. [2024-06-21 20:59:36,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 246 transitions, 2834 flow [2024-06-21 20:59:36,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:59:36,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:59:36,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 20:59:36,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-21 20:59:36,148 INFO L175 Difference]: Start difference. First operand has 242 places, 228 transitions, 2248 flow. Second operand 11 states and 135 transitions. [2024-06-21 20:59:36,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 246 transitions, 2834 flow [2024-06-21 20:59:36,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 246 transitions, 2634 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-21 20:59:36,301 INFO L231 Difference]: Finished difference. Result has 245 places, 229 transitions, 2208 flow [2024-06-21 20:59:36,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2048, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2208, PETRI_PLACES=245, PETRI_TRANSITIONS=229} [2024-06-21 20:59:36,301 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-21 20:59:36,301 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 229 transitions, 2208 flow [2024-06-21 20:59:36,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 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) [2024-06-21 20:59:36,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:36,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:36,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 20:59:36,302 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:36,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:36,302 INFO L85 PathProgramCache]: Analyzing trace with hash 23948350, now seen corresponding path program 1 times [2024-06-21 20:59:36,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:36,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87608492] [2024-06-21 20:59:36,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:36,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:36,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:37,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:37,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:37,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87608492] [2024-06-21 20:59:37,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87608492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:37,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:37,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:59:37,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562165257] [2024-06-21 20:59:37,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:37,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:59:37,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:37,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:59:37,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:59:37,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:37,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 229 transitions, 2208 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:37,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:37,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:37,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:37,704 INFO L124 PetriNetUnfolderBase]: 542/959 cut-off events. [2024-06-21 20:59:37,705 INFO L125 PetriNetUnfolderBase]: For 80499/80499 co-relation queries the response was YES. [2024-06-21 20:59:37,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6624 conditions, 959 events. 542/959 cut-off events. For 80499/80499 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4634 event pairs, 50 based on Foata normal form. 2/959 useless extension candidates. Maximal degree in co-relation 6505. Up to 767 conditions per place. [2024-06-21 20:59:37,712 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 218 selfloop transitions, 36 changer transitions 0/256 dead transitions. [2024-06-21 20:59:37,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 256 transitions, 2979 flow [2024-06-21 20:59:37,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:59:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:59:37,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-21 20:59:37,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-21 20:59:37,714 INFO L175 Difference]: Start difference. First operand has 245 places, 229 transitions, 2208 flow. Second operand 12 states and 140 transitions. [2024-06-21 20:59:37,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 256 transitions, 2979 flow [2024-06-21 20:59:37,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 256 transitions, 2828 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-21 20:59:37,887 INFO L231 Difference]: Finished difference. Result has 250 places, 233 transitions, 2206 flow [2024-06-21 20:59:37,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2206, PETRI_PLACES=250, PETRI_TRANSITIONS=233} [2024-06-21 20:59:37,888 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 220 predicate places. [2024-06-21 20:59:37,888 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 233 transitions, 2206 flow [2024-06-21 20:59:37,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:37,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:37,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:37,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 20:59:37,889 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:37,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:37,889 INFO L85 PathProgramCache]: Analyzing trace with hash 82040800, now seen corresponding path program 2 times [2024-06-21 20:59:37,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:37,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105360580] [2024-06-21 20:59:37,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:37,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:38,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:38,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:38,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105360580] [2024-06-21 20:59:38,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105360580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:38,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:38,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:59:38,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537039772] [2024-06-21 20:59:38,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:38,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:59:38,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:38,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:59:38,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:59:38,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:38,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 233 transitions, 2206 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:38,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:38,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:38,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:39,294 INFO L124 PetriNetUnfolderBase]: 567/1006 cut-off events. [2024-06-21 20:59:39,294 INFO L125 PetriNetUnfolderBase]: For 88853/88853 co-relation queries the response was YES. [2024-06-21 20:59:39,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6990 conditions, 1006 events. 567/1006 cut-off events. For 88853/88853 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4959 event pairs, 67 based on Foata normal form. 2/1006 useless extension candidates. Maximal degree in co-relation 6868. Up to 862 conditions per place. [2024-06-21 20:59:39,303 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 222 selfloop transitions, 39 changer transitions 0/263 dead transitions. [2024-06-21 20:59:39,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 263 transitions, 3020 flow [2024-06-21 20:59:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:59:39,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:59:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-21 20:59:39,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-21 20:59:39,304 INFO L175 Difference]: Start difference. First operand has 250 places, 233 transitions, 2206 flow. Second operand 12 states and 142 transitions. [2024-06-21 20:59:39,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 263 transitions, 3020 flow [2024-06-21 20:59:39,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 263 transitions, 2967 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-21 20:59:39,505 INFO L231 Difference]: Finished difference. Result has 257 places, 239 transitions, 2303 flow [2024-06-21 20:59:39,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2161, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2303, PETRI_PLACES=257, PETRI_TRANSITIONS=239} [2024-06-21 20:59:39,506 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-21 20:59:39,506 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 239 transitions, 2303 flow [2024-06-21 20:59:39,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:39,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:39,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:39,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 20:59:39,506 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:39,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:39,507 INFO L85 PathProgramCache]: Analyzing trace with hash 82160956, now seen corresponding path program 1 times [2024-06-21 20:59:39,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:39,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668900773] [2024-06-21 20:59:39,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:39,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:40,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:40,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668900773] [2024-06-21 20:59:40,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668900773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:40,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:40,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:59:40,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814214767] [2024-06-21 20:59:40,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:40,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:59:40,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:40,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:59:40,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:59:40,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:40,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 239 transitions, 2303 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:40,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:40,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:40,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:41,144 INFO L124 PetriNetUnfolderBase]: 573/1016 cut-off events. [2024-06-21 20:59:41,144 INFO L125 PetriNetUnfolderBase]: For 92388/92388 co-relation queries the response was YES. [2024-06-21 20:59:41,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7177 conditions, 1016 events. 573/1016 cut-off events. For 92388/92388 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5032 event pairs, 68 based on Foata normal form. 2/1016 useless extension candidates. Maximal degree in co-relation 7052. Up to 891 conditions per place. [2024-06-21 20:59:41,153 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 213 selfloop transitions, 50 changer transitions 0/265 dead transitions. [2024-06-21 20:59:41,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 265 transitions, 2971 flow [2024-06-21 20:59:41,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-21 20:59:41,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-21 20:59:41,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 163 transitions. [2024-06-21 20:59:41,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35053763440860214 [2024-06-21 20:59:41,158 INFO L175 Difference]: Start difference. First operand has 257 places, 239 transitions, 2303 flow. Second operand 15 states and 163 transitions. [2024-06-21 20:59:41,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 265 transitions, 2971 flow [2024-06-21 20:59:41,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 265 transitions, 2909 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 20:59:41,394 INFO L231 Difference]: Finished difference. Result has 266 places, 241 transitions, 2425 flow [2024-06-21 20:59:41,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2425, PETRI_PLACES=266, PETRI_TRANSITIONS=241} [2024-06-21 20:59:41,395 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-21 20:59:41,395 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 241 transitions, 2425 flow [2024-06-21 20:59:41,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:41,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:41,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:41,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 20:59:41,395 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:41,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:41,396 INFO L85 PathProgramCache]: Analyzing trace with hash 82160770, now seen corresponding path program 3 times [2024-06-21 20:59:41,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:41,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871430257] [2024-06-21 20:59:41,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:41,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:42,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:42,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:42,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871430257] [2024-06-21 20:59:42,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871430257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:42,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:42,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:59:42,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534840168] [2024-06-21 20:59:42,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:42,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:59:42,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:42,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:59:42,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:59:42,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:42,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 241 transitions, 2425 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:42,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:42,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:42,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:42,731 INFO L124 PetriNetUnfolderBase]: 602/1068 cut-off events. [2024-06-21 20:59:42,732 INFO L125 PetriNetUnfolderBase]: For 94701/94701 co-relation queries the response was YES. [2024-06-21 20:59:42,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7592 conditions, 1068 events. 602/1068 cut-off events. For 94701/94701 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5388 event pairs, 85 based on Foata normal form. 2/1068 useless extension candidates. Maximal degree in co-relation 7465. Up to 1004 conditions per place. [2024-06-21 20:59:42,742 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 244 selfloop transitions, 27 changer transitions 0/273 dead transitions. [2024-06-21 20:59:42,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 273 transitions, 3195 flow [2024-06-21 20:59:42,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 20:59:42,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 20:59:42,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 138 transitions. [2024-06-21 20:59:42,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3424317617866005 [2024-06-21 20:59:42,744 INFO L175 Difference]: Start difference. First operand has 266 places, 241 transitions, 2425 flow. Second operand 13 states and 138 transitions. [2024-06-21 20:59:42,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 273 transitions, 3195 flow [2024-06-21 20:59:42,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 273 transitions, 2989 flow, removed 36 selfloop flow, removed 13 redundant places. [2024-06-21 20:59:42,994 INFO L231 Difference]: Finished difference. Result has 271 places, 256 transitions, 2511 flow [2024-06-21 20:59:42,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2511, PETRI_PLACES=271, PETRI_TRANSITIONS=256} [2024-06-21 20:59:42,994 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-06-21 20:59:42,995 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 256 transitions, 2511 flow [2024-06-21 20:59:42,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:42,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:42,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:42,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 20:59:42,995 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:42,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:42,996 INFO L85 PathProgramCache]: Analyzing trace with hash 82156120, now seen corresponding path program 4 times [2024-06-21 20:59:42,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:42,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822982866] [2024-06-21 20:59:42,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:42,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:43,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:43,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822982866] [2024-06-21 20:59:43,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822982866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:43,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:43,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:59:43,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275181558] [2024-06-21 20:59:43,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:43,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:59:43,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:43,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:59:43,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:59:43,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:43,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 256 transitions, 2511 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:43,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:43,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:43,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:44,277 INFO L124 PetriNetUnfolderBase]: 606/1075 cut-off events. [2024-06-21 20:59:44,278 INFO L125 PetriNetUnfolderBase]: For 97016/97016 co-relation queries the response was YES. [2024-06-21 20:59:44,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7550 conditions, 1075 events. 606/1075 cut-off events. For 97016/97016 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5394 event pairs, 72 based on Foata normal form. 2/1075 useless extension candidates. Maximal degree in co-relation 7417. Up to 917 conditions per place. [2024-06-21 20:59:44,288 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 225 selfloop transitions, 53 changer transitions 0/280 dead transitions. [2024-06-21 20:59:44,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 280 transitions, 3321 flow [2024-06-21 20:59:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:59:44,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:59:44,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-21 20:59:44,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-21 20:59:44,289 INFO L175 Difference]: Start difference. First operand has 271 places, 256 transitions, 2511 flow. Second operand 12 states and 140 transitions. [2024-06-21 20:59:44,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 280 transitions, 3321 flow [2024-06-21 20:59:44,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 280 transitions, 3283 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 20:59:44,536 INFO L231 Difference]: Finished difference. Result has 278 places, 258 transitions, 2613 flow [2024-06-21 20:59:44,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2473, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2613, PETRI_PLACES=278, PETRI_TRANSITIONS=258} [2024-06-21 20:59:44,537 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 248 predicate places. [2024-06-21 20:59:44,537 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 258 transitions, 2613 flow [2024-06-21 20:59:44,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:44,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:44,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:44,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 20:59:44,538 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:44,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:44,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1895746230, now seen corresponding path program 5 times [2024-06-21 20:59:44,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:44,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96257430] [2024-06-21 20:59:44,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:44,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:45,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:45,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96257430] [2024-06-21 20:59:45,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96257430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:45,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:45,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:59:45,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794489954] [2024-06-21 20:59:45,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:45,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:59:45,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:45,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:59:45,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:59:45,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:45,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 258 transitions, 2613 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:45,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:45,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:45,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:46,128 INFO L124 PetriNetUnfolderBase]: 677/1212 cut-off events. [2024-06-21 20:59:46,129 INFO L125 PetriNetUnfolderBase]: For 151315/151315 co-relation queries the response was YES. [2024-06-21 20:59:46,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9538 conditions, 1212 events. 677/1212 cut-off events. For 151315/151315 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6285 event pairs, 114 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 9403. Up to 1034 conditions per place. [2024-06-21 20:59:46,141 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 265 selfloop transitions, 25 changer transitions 0/292 dead transitions. [2024-06-21 20:59:46,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 292 transitions, 3593 flow [2024-06-21 20:59:46,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:59:46,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:59:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 20:59:46,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-21 20:59:46,192 INFO L175 Difference]: Start difference. First operand has 278 places, 258 transitions, 2613 flow. Second operand 12 states and 139 transitions. [2024-06-21 20:59:46,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 292 transitions, 3593 flow [2024-06-21 20:59:46,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 292 transitions, 3472 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-21 20:59:46,553 INFO L231 Difference]: Finished difference. Result has 284 places, 266 transitions, 2651 flow [2024-06-21 20:59:46,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2492, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2651, PETRI_PLACES=284, PETRI_TRANSITIONS=266} [2024-06-21 20:59:46,554 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-21 20:59:46,554 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 266 transitions, 2651 flow [2024-06-21 20:59:46,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:46,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:46,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:46,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 20:59:46,554 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:46,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:46,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1895866200, now seen corresponding path program 6 times [2024-06-21 20:59:46,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:46,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429160972] [2024-06-21 20:59:46,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:46,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:46,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:47,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:47,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429160972] [2024-06-21 20:59:47,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429160972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:47,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:47,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:59:47,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130759701] [2024-06-21 20:59:47,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:47,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:59:47,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:47,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:59:47,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:59:47,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:47,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 266 transitions, 2651 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:47,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:47,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:47,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:48,104 INFO L124 PetriNetUnfolderBase]: 689/1244 cut-off events. [2024-06-21 20:59:48,104 INFO L125 PetriNetUnfolderBase]: For 206952/206952 co-relation queries the response was YES. [2024-06-21 20:59:48,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8745 conditions, 1244 events. 689/1244 cut-off events. For 206952/206952 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6542 event pairs, 98 based on Foata normal form. 28/1270 useless extension candidates. Maximal degree in co-relation 8605. Up to 1008 conditions per place. [2024-06-21 20:59:48,117 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 231 selfloop transitions, 43 changer transitions 17/293 dead transitions. [2024-06-21 20:59:48,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 293 transitions, 3425 flow [2024-06-21 20:59:48,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 20:59:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 20:59:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-21 20:59:48,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36476426799007444 [2024-06-21 20:59:48,118 INFO L175 Difference]: Start difference. First operand has 284 places, 266 transitions, 2651 flow. Second operand 13 states and 147 transitions. [2024-06-21 20:59:48,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 293 transitions, 3425 flow [2024-06-21 20:59:48,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 293 transitions, 3393 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-21 20:59:48,493 INFO L231 Difference]: Finished difference. Result has 293 places, 259 transitions, 2673 flow [2024-06-21 20:59:48,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2621, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2673, PETRI_PLACES=293, PETRI_TRANSITIONS=259} [2024-06-21 20:59:48,494 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-06-21 20:59:48,494 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 259 transitions, 2673 flow [2024-06-21 20:59:48,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:48,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:48,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:48,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 20:59:48,495 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:48,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:48,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1525365066, now seen corresponding path program 7 times [2024-06-21 20:59:48,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:48,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759502792] [2024-06-21 20:59:48,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:48,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:49,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:49,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759502792] [2024-06-21 20:59:49,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759502792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:49,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:49,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:59:49,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010850163] [2024-06-21 20:59:49,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:49,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:59:49,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:49,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:59:49,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:59:49,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:49,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 259 transitions, 2673 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:49,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:49,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:49,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:49,964 INFO L124 PetriNetUnfolderBase]: 622/1115 cut-off events. [2024-06-21 20:59:49,964 INFO L125 PetriNetUnfolderBase]: For 111864/111864 co-relation queries the response was YES. [2024-06-21 20:59:49,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7943 conditions, 1115 events. 622/1115 cut-off events. For 111864/111864 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5753 event pairs, 86 based on Foata normal form. 4/1117 useless extension candidates. Maximal degree in co-relation 7800. Up to 983 conditions per place. [2024-06-21 20:59:49,980 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 231 selfloop transitions, 44 changer transitions 0/277 dead transitions. [2024-06-21 20:59:49,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 277 transitions, 3283 flow [2024-06-21 20:59:49,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:59:49,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:59:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-21 20:59:49,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-21 20:59:49,981 INFO L175 Difference]: Start difference. First operand has 293 places, 259 transitions, 2673 flow. Second operand 12 states and 131 transitions. [2024-06-21 20:59:49,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 277 transitions, 3283 flow [2024-06-21 20:59:50,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 277 transitions, 3113 flow, removed 17 selfloop flow, removed 14 redundant places. [2024-06-21 20:59:50,434 INFO L231 Difference]: Finished difference. Result has 290 places, 260 transitions, 2618 flow [2024-06-21 20:59:50,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2503, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2618, PETRI_PLACES=290, PETRI_TRANSITIONS=260} [2024-06-21 20:59:50,434 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-21 20:59:50,435 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 260 transitions, 2618 flow [2024-06-21 20:59:50,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:50,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:50,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:50,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 20:59:50,435 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:50,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2100533484, now seen corresponding path program 2 times [2024-06-21 20:59:50,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:50,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75763743] [2024-06-21 20:59:50,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:50,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:51,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:51,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75763743] [2024-06-21 20:59:51,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75763743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:51,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:51,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:59:51,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969041179] [2024-06-21 20:59:51,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:51,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:59:51,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:51,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:59:51,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:59:51,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:51,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 260 transitions, 2618 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:51,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:51,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:51,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:52,077 INFO L124 PetriNetUnfolderBase]: 628/1125 cut-off events. [2024-06-21 20:59:52,078 INFO L125 PetriNetUnfolderBase]: For 107362/107362 co-relation queries the response was YES. [2024-06-21 20:59:52,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7994 conditions, 1125 events. 628/1125 cut-off events. For 107362/107362 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5826 event pairs, 72 based on Foata normal form. 2/1125 useless extension candidates. Maximal degree in co-relation 7853. Up to 867 conditions per place. [2024-06-21 20:59:52,089 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 202 selfloop transitions, 78 changer transitions 0/282 dead transitions. [2024-06-21 20:59:52,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 282 transitions, 3317 flow [2024-06-21 20:59:52,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 20:59:52,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 20:59:52,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 20:59:52,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-21 20:59:52,091 INFO L175 Difference]: Start difference. First operand has 290 places, 260 transitions, 2618 flow. Second operand 12 states and 147 transitions. [2024-06-21 20:59:52,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 282 transitions, 3317 flow [2024-06-21 20:59:52,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 282 transitions, 3214 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-21 20:59:52,416 INFO L231 Difference]: Finished difference. Result has 293 places, 263 transitions, 2773 flow [2024-06-21 20:59:52,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2773, PETRI_PLACES=293, PETRI_TRANSITIONS=263} [2024-06-21 20:59:52,417 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-06-21 20:59:52,417 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 263 transitions, 2773 flow [2024-06-21 20:59:52,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:52,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:52,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:52,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 20:59:52,417 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:52,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:52,418 INFO L85 PathProgramCache]: Analyzing trace with hash 2066146964, now seen corresponding path program 8 times [2024-06-21 20:59:52,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:52,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030517875] [2024-06-21 20:59:52,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:52,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:53,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:53,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030517875] [2024-06-21 20:59:53,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030517875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:53,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:53,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:59:53,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899809838] [2024-06-21 20:59:53,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:53,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:59:53,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:53,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:59:53,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:59:53,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:53,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 263 transitions, 2773 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:53,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:53,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:53,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:53,838 INFO L124 PetriNetUnfolderBase]: 652/1177 cut-off events. [2024-06-21 20:59:53,838 INFO L125 PetriNetUnfolderBase]: For 158125/158125 co-relation queries the response was YES. [2024-06-21 20:59:53,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8420 conditions, 1177 events. 652/1177 cut-off events. For 158125/158125 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6153 event pairs, 74 based on Foata normal form. 14/1189 useless extension candidates. Maximal degree in co-relation 8278. Up to 850 conditions per place. [2024-06-21 20:59:53,851 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 197 selfloop transitions, 76 changer transitions 12/287 dead transitions. [2024-06-21 20:59:53,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 287 transitions, 3515 flow [2024-06-21 20:59:53,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:59:53,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:59:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 20:59:53,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-21 20:59:53,853 INFO L175 Difference]: Start difference. First operand has 293 places, 263 transitions, 2773 flow. Second operand 11 states and 144 transitions. [2024-06-21 20:59:53,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 287 transitions, 3515 flow [2024-06-21 20:59:54,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 287 transitions, 3286 flow, removed 39 selfloop flow, removed 10 redundant places. [2024-06-21 20:59:54,194 INFO L231 Difference]: Finished difference. Result has 294 places, 259 transitions, 2684 flow [2024-06-21 20:59:54,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2684, PETRI_PLACES=294, PETRI_TRANSITIONS=259} [2024-06-21 20:59:54,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-21 20:59:54,194 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 259 transitions, 2684 flow [2024-06-21 20:59:54,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:54,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:54,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:54,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 20:59:54,195 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:54,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:54,195 INFO L85 PathProgramCache]: Analyzing trace with hash -886119118, now seen corresponding path program 1 times [2024-06-21 20:59:54,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:54,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475470747] [2024-06-21 20:59:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:54,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:55,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:55,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475470747] [2024-06-21 20:59:55,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475470747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:55,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:55,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:59:55,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174517360] [2024-06-21 20:59:55,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:55,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:59:55,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:55,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:59:55,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:59:55,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:55,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 259 transitions, 2684 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:55,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:55,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:55,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:55,687 INFO L124 PetriNetUnfolderBase]: 622/1119 cut-off events. [2024-06-21 20:59:55,688 INFO L125 PetriNetUnfolderBase]: For 111061/111061 co-relation queries the response was YES. [2024-06-21 20:59:55,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7984 conditions, 1119 events. 622/1119 cut-off events. For 111061/111061 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5811 event pairs, 90 based on Foata normal form. 2/1119 useless extension candidates. Maximal degree in co-relation 7842. Up to 1020 conditions per place. [2024-06-21 20:59:55,698 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 236 selfloop transitions, 37 changer transitions 0/275 dead transitions. [2024-06-21 20:59:55,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 275 transitions, 3279 flow [2024-06-21 20:59:55,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 20:59:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 20:59:55,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-21 20:59:55,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38064516129032255 [2024-06-21 20:59:55,700 INFO L175 Difference]: Start difference. First operand has 294 places, 259 transitions, 2684 flow. Second operand 10 states and 118 transitions. [2024-06-21 20:59:55,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 275 transitions, 3279 flow [2024-06-21 20:59:56,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 275 transitions, 3107 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 20:59:56,071 INFO L231 Difference]: Finished difference. Result has 293 places, 261 transitions, 2610 flow [2024-06-21 20:59:56,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2512, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2610, PETRI_PLACES=293, PETRI_TRANSITIONS=261} [2024-06-21 20:59:56,071 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 263 predicate places. [2024-06-21 20:59:56,071 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 261 transitions, 2610 flow [2024-06-21 20:59:56,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:56,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:56,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:56,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 20:59:56,072 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:56,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:56,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1058855272, now seen corresponding path program 9 times [2024-06-21 20:59:56,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:56,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471207402] [2024-06-21 20:59:56,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:56,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:56,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:56,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:56,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471207402] [2024-06-21 20:59:56,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471207402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:56,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:56,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:59:56,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586646964] [2024-06-21 20:59:56,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:56,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:59:56,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:56,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:59:56,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:59:57,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:57,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 261 transitions, 2610 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:57,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:57,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:57,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:57,435 INFO L124 PetriNetUnfolderBase]: 649/1176 cut-off events. [2024-06-21 20:59:57,435 INFO L125 PetriNetUnfolderBase]: For 163037/163037 co-relation queries the response was YES. [2024-06-21 20:59:57,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8246 conditions, 1176 events. 649/1176 cut-off events. For 163037/163037 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6181 event pairs, 76 based on Foata normal form. 14/1188 useless extension candidates. Maximal degree in co-relation 8103. Up to 872 conditions per place. [2024-06-21 20:59:57,447 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 207 selfloop transitions, 67 changer transitions 11/287 dead transitions. [2024-06-21 20:59:57,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 287 transitions, 3366 flow [2024-06-21 20:59:57,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:59:57,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:59:57,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 20:59:57,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222873900293255 [2024-06-21 20:59:57,449 INFO L175 Difference]: Start difference. First operand has 293 places, 261 transitions, 2610 flow. Second operand 11 states and 144 transitions. [2024-06-21 20:59:57,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 287 transitions, 3366 flow [2024-06-21 20:59:57,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 287 transitions, 3288 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 20:59:57,808 INFO L231 Difference]: Finished difference. Result has 298 places, 260 transitions, 2678 flow [2024-06-21 20:59:57,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2678, PETRI_PLACES=298, PETRI_TRANSITIONS=260} [2024-06-21 20:59:57,809 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-21 20:59:57,809 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 260 transitions, 2678 flow [2024-06-21 20:59:57,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:57,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:57,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:57,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 20:59:57,810 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:57,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:57,810 INFO L85 PathProgramCache]: Analyzing trace with hash 2028200032, now seen corresponding path program 3 times [2024-06-21 20:59:57,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:57,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386386752] [2024-06-21 20:59:57,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:57,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 20:59:58,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 20:59:58,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 20:59:58,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386386752] [2024-06-21 20:59:58,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386386752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 20:59:58,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 20:59:58,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 20:59:58,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204643463] [2024-06-21 20:59:58,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 20:59:58,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 20:59:58,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 20:59:58,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 20:59:58,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 20:59:58,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 20:59:58,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 260 transitions, 2678 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:58,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 20:59:58,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 20:59:58,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 20:59:59,250 INFO L124 PetriNetUnfolderBase]: 621/1120 cut-off events. [2024-06-21 20:59:59,251 INFO L125 PetriNetUnfolderBase]: For 116892/116892 co-relation queries the response was YES. [2024-06-21 20:59:59,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8115 conditions, 1120 events. 621/1120 cut-off events. For 116892/116892 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5823 event pairs, 72 based on Foata normal form. 2/1120 useless extension candidates. Maximal degree in co-relation 7970. Up to 882 conditions per place. [2024-06-21 20:59:59,263 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 208 selfloop transitions, 68 changer transitions 0/278 dead transitions. [2024-06-21 20:59:59,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 278 transitions, 3356 flow [2024-06-21 20:59:59,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 20:59:59,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 20:59:59,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-21 20:59:59,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-21 20:59:59,264 INFO L175 Difference]: Start difference. First operand has 298 places, 260 transitions, 2678 flow. Second operand 11 states and 135 transitions. [2024-06-21 20:59:59,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 278 transitions, 3356 flow [2024-06-21 20:59:59,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 278 transitions, 3168 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-21 20:59:59,658 INFO L231 Difference]: Finished difference. Result has 297 places, 262 transitions, 2717 flow [2024-06-21 20:59:59,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2490, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2717, PETRI_PLACES=297, PETRI_TRANSITIONS=262} [2024-06-21 20:59:59,659 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-21 20:59:59,659 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 262 transitions, 2717 flow [2024-06-21 20:59:59,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 20:59:59,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 20:59:59,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 20:59:59,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 20:59:59,660 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 20:59:59,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 20:59:59,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1899740390, now seen corresponding path program 4 times [2024-06-21 20:59:59,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 20:59:59,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545454881] [2024-06-21 20:59:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 20:59:59,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 20:59:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:00,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:00,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:00,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545454881] [2024-06-21 21:00:00,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545454881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:00,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:00,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:00,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15864774] [2024-06-21 21:00:00,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:00,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:00,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:00,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:00,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:00,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:00,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 262 transitions, 2717 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:00,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:00,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:00,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:00,987 INFO L124 PetriNetUnfolderBase]: 627/1130 cut-off events. [2024-06-21 21:00:00,988 INFO L125 PetriNetUnfolderBase]: For 120500/120500 co-relation queries the response was YES. [2024-06-21 21:00:00,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8236 conditions, 1130 events. 627/1130 cut-off events. For 120500/120500 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5890 event pairs, 70 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 8093. Up to 863 conditions per place. [2024-06-21 21:00:01,001 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 201 selfloop transitions, 78 changer transitions 0/281 dead transitions. [2024-06-21 21:00:01,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 281 transitions, 3407 flow [2024-06-21 21:00:01,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:00:01,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:00:01,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-21 21:00:01,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-21 21:00:01,002 INFO L175 Difference]: Start difference. First operand has 297 places, 262 transitions, 2717 flow. Second operand 12 states and 145 transitions. [2024-06-21 21:00:01,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 281 transitions, 3407 flow [2024-06-21 21:00:01,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 281 transitions, 3196 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-21 21:00:01,463 INFO L231 Difference]: Finished difference. Result has 300 places, 264 transitions, 2760 flow [2024-06-21 21:00:01,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2506, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2760, PETRI_PLACES=300, PETRI_TRANSITIONS=264} [2024-06-21 21:00:01,464 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-21 21:00:01,464 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 264 transitions, 2760 flow [2024-06-21 21:00:01,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:01,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:01,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:01,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 21:00:01,465 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:01,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:01,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1899740204, now seen corresponding path program 10 times [2024-06-21 21:00:01,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:01,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408113780] [2024-06-21 21:00:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:01,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:02,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:02,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408113780] [2024-06-21 21:00:02,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408113780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:02,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:02,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:02,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452283570] [2024-06-21 21:00:02,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:02,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:02,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:02,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:02,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:02,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:02,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 264 transitions, 2760 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:02,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:02,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:02,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:02,710 INFO L124 PetriNetUnfolderBase]: 631/1138 cut-off events. [2024-06-21 21:00:02,710 INFO L125 PetriNetUnfolderBase]: For 122380/122380 co-relation queries the response was YES. [2024-06-21 21:00:02,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8256 conditions, 1138 events. 631/1138 cut-off events. For 122380/122380 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5943 event pairs, 84 based on Foata normal form. 2/1138 useless extension candidates. Maximal degree in co-relation 8112. Up to 976 conditions per place. [2024-06-21 21:00:02,723 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 218 selfloop transitions, 58 changer transitions 0/278 dead transitions. [2024-06-21 21:00:02,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 278 transitions, 3364 flow [2024-06-21 21:00:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 21:00:02,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-21 21:00:02,724 INFO L175 Difference]: Start difference. First operand has 300 places, 264 transitions, 2760 flow. Second operand 11 states and 130 transitions. [2024-06-21 21:00:02,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 278 transitions, 3364 flow [2024-06-21 21:00:03,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 278 transitions, 3130 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-06-21 21:00:03,199 INFO L231 Difference]: Finished difference. Result has 301 places, 265 transitions, 2670 flow [2024-06-21 21:00:03,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2526, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2670, PETRI_PLACES=301, PETRI_TRANSITIONS=265} [2024-06-21 21:00:03,199 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-21 21:00:03,199 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 265 transitions, 2670 flow [2024-06-21 21:00:03,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:03,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:03,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:03,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 21:00:03,200 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:03,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:03,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2065974170, now seen corresponding path program 5 times [2024-06-21 21:00:03,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:03,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569803546] [2024-06-21 21:00:03,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:03,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:03,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:04,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:04,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:04,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569803546] [2024-06-21 21:00:04,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569803546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:04,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:04,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:04,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652063634] [2024-06-21 21:00:04,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:04,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:04,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:04,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:04,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:04,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:04,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 265 transitions, 2670 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:04,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:04,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:04,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:04,597 INFO L124 PetriNetUnfolderBase]: 647/1164 cut-off events. [2024-06-21 21:00:04,597 INFO L125 PetriNetUnfolderBase]: For 132498/132498 co-relation queries the response was YES. [2024-06-21 21:00:04,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 1164 events. 647/1164 cut-off events. For 132498/132498 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6098 event pairs, 71 based on Foata normal form. 2/1164 useless extension candidates. Maximal degree in co-relation 8495. Up to 877 conditions per place. [2024-06-21 21:00:04,610 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 201 selfloop transitions, 85 changer transitions 0/288 dead transitions. [2024-06-21 21:00:04,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 288 transitions, 3656 flow [2024-06-21 21:00:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:00:04,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:00:04,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 21:00:04,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-21 21:00:04,611 INFO L175 Difference]: Start difference. First operand has 301 places, 265 transitions, 2670 flow. Second operand 12 states and 148 transitions. [2024-06-21 21:00:04,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 288 transitions, 3656 flow [2024-06-21 21:00:05,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 288 transitions, 3512 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-21 21:00:05,027 INFO L231 Difference]: Finished difference. Result has 303 places, 269 transitions, 2880 flow [2024-06-21 21:00:05,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2526, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2880, PETRI_PLACES=303, PETRI_TRANSITIONS=269} [2024-06-21 21:00:05,028 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-06-21 21:00:05,028 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 269 transitions, 2880 flow [2024-06-21 21:00:05,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:05,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:05,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:05,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 21:00:05,028 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:05,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:05,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2065973984, now seen corresponding path program 11 times [2024-06-21 21:00:05,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:05,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212111813] [2024-06-21 21:00:05,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:05,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:05,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:05,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:05,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212111813] [2024-06-21 21:00:05,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212111813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:05,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:05,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:05,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55380959] [2024-06-21 21:00:05,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:05,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:05,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:05,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:05,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:05,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:05,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 269 transitions, 2880 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:05,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:05,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:05,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:06,039 INFO L124 PetriNetUnfolderBase]: 651/1172 cut-off events. [2024-06-21 21:00:06,039 INFO L125 PetriNetUnfolderBase]: For 135679/135679 co-relation queries the response was YES. [2024-06-21 21:00:06,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8786 conditions, 1172 events. 651/1172 cut-off events. For 135679/135679 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6160 event pairs, 87 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 8641. Up to 1007 conditions per place. [2024-06-21 21:00:06,052 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 219 selfloop transitions, 63 changer transitions 0/284 dead transitions. [2024-06-21 21:00:06,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 284 transitions, 3505 flow [2024-06-21 21:00:06,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:06,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:06,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-21 21:00:06,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-21 21:00:06,065 INFO L175 Difference]: Start difference. First operand has 303 places, 269 transitions, 2880 flow. Second operand 11 states and 129 transitions. [2024-06-21 21:00:06,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 284 transitions, 3505 flow [2024-06-21 21:00:06,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 284 transitions, 3319 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-21 21:00:06,525 INFO L231 Difference]: Finished difference. Result has 307 places, 271 transitions, 2868 flow [2024-06-21 21:00:06,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2694, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2868, PETRI_PLACES=307, PETRI_TRANSITIONS=271} [2024-06-21 21:00:06,526 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-21 21:00:06,526 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 271 transitions, 2868 flow [2024-06-21 21:00:06,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:06,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:06,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:06,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 21:00:06,526 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:06,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:06,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1899735554, now seen corresponding path program 12 times [2024-06-21 21:00:06,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:06,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948521559] [2024-06-21 21:00:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:06,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:07,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:07,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948521559] [2024-06-21 21:00:07,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948521559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:07,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:07,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:07,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306220781] [2024-06-21 21:00:07,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:07,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:07,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:07,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:07,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:07,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:07,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 271 transitions, 2868 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:07,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:07,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:07,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:07,645 INFO L124 PetriNetUnfolderBase]: 655/1180 cut-off events. [2024-06-21 21:00:07,645 INFO L125 PetriNetUnfolderBase]: For 136772/136772 co-relation queries the response was YES. [2024-06-21 21:00:07,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8853 conditions, 1180 events. 655/1180 cut-off events. For 136772/136772 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6226 event pairs, 89 based on Foata normal form. 2/1180 useless extension candidates. Maximal degree in co-relation 8705. Up to 998 conditions per place. [2024-06-21 21:00:07,660 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 224 selfloop transitions, 60 changer transitions 0/286 dead transitions. [2024-06-21 21:00:07,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 286 transitions, 3494 flow [2024-06-21 21:00:07,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:07,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:07,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 21:00:07,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-21 21:00:07,661 INFO L175 Difference]: Start difference. First operand has 307 places, 271 transitions, 2868 flow. Second operand 11 states and 131 transitions. [2024-06-21 21:00:07,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 286 transitions, 3494 flow [2024-06-21 21:00:08,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 286 transitions, 3347 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 21:00:08,051 INFO L231 Difference]: Finished difference. Result has 309 places, 272 transitions, 2873 flow [2024-06-21 21:00:08,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2721, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2873, PETRI_PLACES=309, PETRI_TRANSITIONS=272} [2024-06-21 21:00:08,052 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-21 21:00:08,052 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 272 transitions, 2873 flow [2024-06-21 21:00:08,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:08,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:08,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:08,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 21:00:08,052 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:08,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:08,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1895151584, now seen corresponding path program 13 times [2024-06-21 21:00:08,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:08,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966534365] [2024-06-21 21:00:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:08,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:08,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:08,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966534365] [2024-06-21 21:00:08,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966534365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:08,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:08,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:08,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979022415] [2024-06-21 21:00:08,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:08,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:08,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:08,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:08,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:08,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:08,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 272 transitions, 2873 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:08,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:08,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:08,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:09,140 INFO L124 PetriNetUnfolderBase]: 702/1273 cut-off events. [2024-06-21 21:00:09,140 INFO L125 PetriNetUnfolderBase]: For 206619/206619 co-relation queries the response was YES. [2024-06-21 21:00:09,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10837 conditions, 1273 events. 702/1273 cut-off events. For 206619/206619 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6801 event pairs, 90 based on Foata normal form. 2/1273 useless extension candidates. Maximal degree in co-relation 10689. Up to 818 conditions per place. [2024-06-21 21:00:09,156 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 204 selfloop transitions, 93 changer transitions 0/299 dead transitions. [2024-06-21 21:00:09,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 299 transitions, 3883 flow [2024-06-21 21:00:09,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:09,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:09,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 21:00:09,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340175953079179 [2024-06-21 21:00:09,160 INFO L175 Difference]: Start difference. First operand has 309 places, 272 transitions, 2873 flow. Second operand 11 states and 148 transitions. [2024-06-21 21:00:09,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 299 transitions, 3883 flow [2024-06-21 21:00:09,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 299 transitions, 3741 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 21:00:09,679 INFO L231 Difference]: Finished difference. Result has 311 places, 274 transitions, 2979 flow [2024-06-21 21:00:09,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2731, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2979, PETRI_PLACES=311, PETRI_TRANSITIONS=274} [2024-06-21 21:00:09,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-21 21:00:09,680 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 274 transitions, 2979 flow [2024-06-21 21:00:09,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:09,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:09,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:09,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 21:00:09,680 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:09,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:09,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1895271554, now seen corresponding path program 14 times [2024-06-21 21:00:09,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:09,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786657518] [2024-06-21 21:00:09,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:09,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:10,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:10,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:10,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786657518] [2024-06-21 21:00:10,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786657518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:10,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:10,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:10,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956183929] [2024-06-21 21:00:10,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:10,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:10,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:10,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:10,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:10,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:10,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 274 transitions, 2979 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:10,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:10,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:10,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:10,738 INFO L124 PetriNetUnfolderBase]: 706/1281 cut-off events. [2024-06-21 21:00:10,738 INFO L125 PetriNetUnfolderBase]: For 210823/210823 co-relation queries the response was YES. [2024-06-21 21:00:10,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11006 conditions, 1281 events. 706/1281 cut-off events. For 210823/210823 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6890 event pairs, 114 based on Foata normal form. 2/1281 useless extension candidates. Maximal degree in co-relation 10857. Up to 1098 conditions per place. [2024-06-21 21:00:10,753 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 217 selfloop transitions, 69 changer transitions 0/288 dead transitions. [2024-06-21 21:00:10,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 288 transitions, 3611 flow [2024-06-21 21:00:10,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:10,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 21:00:10,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-21 21:00:10,754 INFO L175 Difference]: Start difference. First operand has 311 places, 274 transitions, 2979 flow. Second operand 11 states and 131 transitions. [2024-06-21 21:00:10,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 288 transitions, 3611 flow [2024-06-21 21:00:11,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 288 transitions, 3429 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 21:00:11,366 INFO L231 Difference]: Finished difference. Result has 314 places, 275 transitions, 2971 flow [2024-06-21 21:00:11,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2971, PETRI_PLACES=314, PETRI_TRANSITIONS=275} [2024-06-21 21:00:11,366 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-21 21:00:11,366 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 275 transitions, 2971 flow [2024-06-21 21:00:11,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:11,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:11,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:11,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 21:00:11,367 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:11,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:11,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2065969334, now seen corresponding path program 15 times [2024-06-21 21:00:11,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:11,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381634580] [2024-06-21 21:00:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:11,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:11,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:11,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381634580] [2024-06-21 21:00:11,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381634580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:11,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:11,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:11,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910799434] [2024-06-21 21:00:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:11,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:11,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:11,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:11,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:12,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:12,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 275 transitions, 2971 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:12,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:12,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:12,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:12,441 INFO L124 PetriNetUnfolderBase]: 717/1302 cut-off events. [2024-06-21 21:00:12,441 INFO L125 PetriNetUnfolderBase]: For 224993/224993 co-relation queries the response was YES. [2024-06-21 21:00:12,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11363 conditions, 1302 events. 717/1302 cut-off events. For 224993/224993 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7037 event pairs, 115 based on Foata normal form. 2/1302 useless extension candidates. Maximal degree in co-relation 11213. Up to 1108 conditions per place. [2024-06-21 21:00:12,456 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 224 selfloop transitions, 66 changer transitions 0/292 dead transitions. [2024-06-21 21:00:12,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 292 transitions, 3841 flow [2024-06-21 21:00:12,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:12,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:12,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 21:00:12,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-21 21:00:12,457 INFO L175 Difference]: Start difference. First operand has 314 places, 275 transitions, 2971 flow. Second operand 11 states and 131 transitions. [2024-06-21 21:00:12,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 292 transitions, 3841 flow [2024-06-21 21:00:13,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 292 transitions, 3673 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 21:00:13,043 INFO L231 Difference]: Finished difference. Result has 316 places, 277 transitions, 2997 flow [2024-06-21 21:00:13,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2803, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2997, PETRI_PLACES=316, PETRI_TRANSITIONS=277} [2024-06-21 21:00:13,044 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-21 21:00:13,044 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 277 transitions, 2997 flow [2024-06-21 21:00:13,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:13,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:13,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:13,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 21:00:13,045 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:13,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:13,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2072403074, now seen corresponding path program 16 times [2024-06-21 21:00:13,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:13,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990985221] [2024-06-21 21:00:13,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:13,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:13,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:13,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990985221] [2024-06-21 21:00:13,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990985221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:13,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:13,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:13,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902575935] [2024-06-21 21:00:13,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:13,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:13,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:13,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:13,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:13,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:13,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 277 transitions, 2997 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:13,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:13,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:13,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:14,244 INFO L124 PetriNetUnfolderBase]: 698/1269 cut-off events. [2024-06-21 21:00:14,245 INFO L125 PetriNetUnfolderBase]: For 219018/219018 co-relation queries the response was YES. [2024-06-21 21:00:14,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9760 conditions, 1269 events. 698/1269 cut-off events. For 219018/219018 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6838 event pairs, 88 based on Foata normal form. 14/1281 useless extension candidates. Maximal degree in co-relation 9609. Up to 954 conditions per place. [2024-06-21 21:00:14,259 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 211 selfloop transitions, 73 changer transitions 13/299 dead transitions. [2024-06-21 21:00:14,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 299 transitions, 3749 flow [2024-06-21 21:00:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:14,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 21:00:14,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-21 21:00:14,261 INFO L175 Difference]: Start difference. First operand has 316 places, 277 transitions, 2997 flow. Second operand 11 states and 141 transitions. [2024-06-21 21:00:14,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 299 transitions, 3749 flow [2024-06-21 21:00:14,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 299 transitions, 3623 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-21 21:00:14,788 INFO L231 Difference]: Finished difference. Result has 320 places, 271 transitions, 2973 flow [2024-06-21 21:00:14,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2871, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2973, PETRI_PLACES=320, PETRI_TRANSITIONS=271} [2024-06-21 21:00:14,789 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-21 21:00:14,789 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 271 transitions, 2973 flow [2024-06-21 21:00:14,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:14,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:14,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:14,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 21:00:14,789 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:14,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:14,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2072403260, now seen corresponding path program 6 times [2024-06-21 21:00:14,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:14,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121143342] [2024-06-21 21:00:14,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:14,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:15,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:15,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121143342] [2024-06-21 21:00:15,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121143342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:15,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:15,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:15,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994213450] [2024-06-21 21:00:15,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:15,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:15,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:15,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:15,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:15,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:15,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 271 transitions, 2973 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:15,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:15,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:15,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:16,045 INFO L124 PetriNetUnfolderBase]: 656/1193 cut-off events. [2024-06-21 21:00:16,046 INFO L125 PetriNetUnfolderBase]: For 150716/150716 co-relation queries the response was YES. [2024-06-21 21:00:16,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9131 conditions, 1193 events. 656/1193 cut-off events. For 150716/150716 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6388 event pairs, 82 based on Foata normal form. 2/1193 useless extension candidates. Maximal degree in co-relation 8978. Up to 939 conditions per place. [2024-06-21 21:00:16,060 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 206 selfloop transitions, 78 changer transitions 0/286 dead transitions. [2024-06-21 21:00:16,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 286 transitions, 3581 flow [2024-06-21 21:00:16,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:16,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-21 21:00:16,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-21 21:00:16,061 INFO L175 Difference]: Start difference. First operand has 320 places, 271 transitions, 2973 flow. Second operand 11 states and 133 transitions. [2024-06-21 21:00:16,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 286 transitions, 3581 flow [2024-06-21 21:00:16,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 286 transitions, 3331 flow, removed 35 selfloop flow, removed 14 redundant places. [2024-06-21 21:00:16,510 INFO L231 Difference]: Finished difference. Result has 317 places, 271 transitions, 2884 flow [2024-06-21 21:00:16,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2884, PETRI_PLACES=317, PETRI_TRANSITIONS=271} [2024-06-21 21:00:16,510 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-21 21:00:16,510 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 271 transitions, 2884 flow [2024-06-21 21:00:16,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:16,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:16,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:16,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 21:00:16,511 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:16,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:16,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1895271740, now seen corresponding path program 7 times [2024-06-21 21:00:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:16,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270232179] [2024-06-21 21:00:16,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:16,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:17,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:17,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270232179] [2024-06-21 21:00:17,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270232179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:17,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:17,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:17,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312956922] [2024-06-21 21:00:17,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:17,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:17,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:17,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:17,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:17,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:17,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 271 transitions, 2884 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:17,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:17,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:17,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:18,025 INFO L124 PetriNetUnfolderBase]: 662/1203 cut-off events. [2024-06-21 21:00:18,025 INFO L125 PetriNetUnfolderBase]: For 153690/153690 co-relation queries the response was YES. [2024-06-21 21:00:18,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9178 conditions, 1203 events. 662/1203 cut-off events. For 153690/153690 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6460 event pairs, 81 based on Foata normal form. 2/1203 useless extension candidates. Maximal degree in co-relation 9026. Up to 901 conditions per place. [2024-06-21 21:00:18,039 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 196 selfloop transitions, 93 changer transitions 0/291 dead transitions. [2024-06-21 21:00:18,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 291 transitions, 3600 flow [2024-06-21 21:00:18,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:00:18,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:00:18,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-21 21:00:18,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-21 21:00:18,041 INFO L175 Difference]: Start difference. First operand has 317 places, 271 transitions, 2884 flow. Second operand 13 states and 155 transitions. [2024-06-21 21:00:18,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 291 transitions, 3600 flow [2024-06-21 21:00:18,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 291 transitions, 3432 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 21:00:18,529 INFO L231 Difference]: Finished difference. Result has 320 places, 273 transitions, 3007 flow [2024-06-21 21:00:18,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3007, PETRI_PLACES=320, PETRI_TRANSITIONS=273} [2024-06-21 21:00:18,530 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-21 21:00:18,530 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 273 transitions, 3007 flow [2024-06-21 21:00:18,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:18,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:18,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:18,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 21:00:18,530 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:18,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:18,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1895266904, now seen corresponding path program 17 times [2024-06-21 21:00:18,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:18,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575985957] [2024-06-21 21:00:18,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:18,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:19,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:19,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575985957] [2024-06-21 21:00:19,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575985957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:19,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:19,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:19,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534464195] [2024-06-21 21:00:19,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:19,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:19,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:19,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:19,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:19,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:19,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 273 transitions, 3007 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:19,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:19,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:19,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:19,829 INFO L124 PetriNetUnfolderBase]: 659/1198 cut-off events. [2024-06-21 21:00:19,829 INFO L125 PetriNetUnfolderBase]: For 145954/145954 co-relation queries the response was YES. [2024-06-21 21:00:19,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9024 conditions, 1198 events. 659/1198 cut-off events. For 145954/145954 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6421 event pairs, 78 based on Foata normal form. 2/1198 useless extension candidates. Maximal degree in co-relation 8871. Up to 886 conditions per place. [2024-06-21 21:00:19,839 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 200 selfloop transitions, 88 changer transitions 0/290 dead transitions. [2024-06-21 21:00:19,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 290 transitions, 3625 flow [2024-06-21 21:00:19,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:00:19,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:00:19,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-21 21:00:19,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-21 21:00:19,841 INFO L175 Difference]: Start difference. First operand has 320 places, 273 transitions, 3007 flow. Second operand 12 states and 146 transitions. [2024-06-21 21:00:19,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 290 transitions, 3625 flow [2024-06-21 21:00:20,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 290 transitions, 3350 flow, removed 49 selfloop flow, removed 11 redundant places. [2024-06-21 21:00:20,250 INFO L231 Difference]: Finished difference. Result has 321 places, 273 transitions, 2914 flow [2024-06-21 21:00:20,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2732, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2914, PETRI_PLACES=321, PETRI_TRANSITIONS=273} [2024-06-21 21:00:20,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-21 21:00:20,250 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 273 transitions, 2914 flow [2024-06-21 21:00:20,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:20,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:20,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:20,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 21:00:20,251 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:20,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:20,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1779378400, now seen corresponding path program 18 times [2024-06-21 21:00:20,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:20,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317258916] [2024-06-21 21:00:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:20,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:21,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:21,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317258916] [2024-06-21 21:00:21,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317258916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:21,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:21,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:21,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937107216] [2024-06-21 21:00:21,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:21,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:21,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:21,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:21,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:21,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:21,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 273 transitions, 2914 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:21,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:21,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:21,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:21,607 INFO L124 PetriNetUnfolderBase]: 719/1312 cut-off events. [2024-06-21 21:00:21,607 INFO L125 PetriNetUnfolderBase]: For 226782/226782 co-relation queries the response was YES. [2024-06-21 21:00:21,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11401 conditions, 1312 events. 719/1312 cut-off events. For 226782/226782 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7139 event pairs, 106 based on Foata normal form. 2/1312 useless extension candidates. Maximal degree in co-relation 11247. Up to 1036 conditions per place. [2024-06-21 21:00:21,622 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 243 selfloop transitions, 57 changer transitions 0/302 dead transitions. [2024-06-21 21:00:21,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 302 transitions, 4244 flow [2024-06-21 21:00:21,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:21,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:21,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 21:00:21,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-21 21:00:21,623 INFO L175 Difference]: Start difference. First operand has 321 places, 273 transitions, 2914 flow. Second operand 11 states and 139 transitions. [2024-06-21 21:00:21,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 302 transitions, 4244 flow [2024-06-21 21:00:22,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 302 transitions, 4001 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 21:00:22,279 INFO L231 Difference]: Finished difference. Result has 321 places, 279 transitions, 2963 flow [2024-06-21 21:00:22,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2671, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2963, PETRI_PLACES=321, PETRI_TRANSITIONS=279} [2024-06-21 21:00:22,280 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-21 21:00:22,280 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 279 transitions, 2963 flow [2024-06-21 21:00:22,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:22,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:22,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:22,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 21:00:22,280 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:22,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:22,281 INFO L85 PathProgramCache]: Analyzing trace with hash 838376754, now seen corresponding path program 2 times [2024-06-21 21:00:22,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:22,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862052875] [2024-06-21 21:00:22,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:22,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:23,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:23,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862052875] [2024-06-21 21:00:23,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862052875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:23,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:23,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:23,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752852647] [2024-06-21 21:00:23,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:23,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:23,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:23,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:23,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:23,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 279 transitions, 2963 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:23,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:23,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:23,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:23,638 INFO L124 PetriNetUnfolderBase]: 723/1320 cut-off events. [2024-06-21 21:00:23,638 INFO L125 PetriNetUnfolderBase]: For 230407/230407 co-relation queries the response was YES. [2024-06-21 21:00:23,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11343 conditions, 1320 events. 723/1320 cut-off events. For 230407/230407 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7214 event pairs, 138 based on Foata normal form. 2/1320 useless extension candidates. Maximal degree in co-relation 11188. Up to 1273 conditions per place. [2024-06-21 21:00:23,654 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 271 selfloop transitions, 20 changer transitions 0/293 dead transitions. [2024-06-21 21:00:23,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 293 transitions, 3592 flow [2024-06-21 21:00:23,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:00:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:00:23,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-21 21:00:23,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 21:00:23,656 INFO L175 Difference]: Start difference. First operand has 321 places, 279 transitions, 2963 flow. Second operand 10 states and 110 transitions. [2024-06-21 21:00:23,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 293 transitions, 3592 flow [2024-06-21 21:00:24,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 293 transitions, 3482 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-21 21:00:24,381 INFO L231 Difference]: Finished difference. Result has 326 places, 281 transitions, 2921 flow [2024-06-21 21:00:24,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2853, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2921, PETRI_PLACES=326, PETRI_TRANSITIONS=281} [2024-06-21 21:00:24,381 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2024-06-21 21:00:24,381 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 281 transitions, 2921 flow [2024-06-21 21:00:24,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:24,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:24,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:24,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 21:00:24,382 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:24,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:24,382 INFO L85 PathProgramCache]: Analyzing trace with hash -67924, now seen corresponding path program 8 times [2024-06-21 21:00:24,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:24,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827296798] [2024-06-21 21:00:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:24,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:25,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:25,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827296798] [2024-06-21 21:00:25,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827296798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:25,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:25,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:25,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194654904] [2024-06-21 21:00:25,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:25,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:25,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:25,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:25,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:25,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:25,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 281 transitions, 2921 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:25,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:25,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:25,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:25,697 INFO L124 PetriNetUnfolderBase]: 729/1330 cut-off events. [2024-06-21 21:00:25,697 INFO L125 PetriNetUnfolderBase]: For 235752/235752 co-relation queries the response was YES. [2024-06-21 21:00:25,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11474 conditions, 1330 events. 729/1330 cut-off events. For 235752/235752 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7285 event pairs, 124 based on Foata normal form. 2/1330 useless extension candidates. Maximal degree in co-relation 11316. Up to 1208 conditions per place. [2024-06-21 21:00:25,711 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 253 selfloop transitions, 44 changer transitions 0/299 dead transitions. [2024-06-21 21:00:25,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 299 transitions, 3659 flow [2024-06-21 21:00:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:25,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:25,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-21 21:00:25,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-21 21:00:25,712 INFO L175 Difference]: Start difference. First operand has 326 places, 281 transitions, 2921 flow. Second operand 11 states and 128 transitions. [2024-06-21 21:00:25,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 299 transitions, 3659 flow [2024-06-21 21:00:26,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 299 transitions, 3615 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 21:00:26,373 INFO L231 Difference]: Finished difference. Result has 330 places, 283 transitions, 3068 flow [2024-06-21 21:00:26,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2877, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3068, PETRI_PLACES=330, PETRI_TRANSITIONS=283} [2024-06-21 21:00:26,374 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-21 21:00:26,374 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 283 transitions, 3068 flow [2024-06-21 21:00:26,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:26,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:26,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:26,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 21:00:26,374 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:26,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:26,375 INFO L85 PathProgramCache]: Analyzing trace with hash 691326102, now seen corresponding path program 9 times [2024-06-21 21:00:26,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:26,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947355138] [2024-06-21 21:00:26,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:26,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:27,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:27,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947355138] [2024-06-21 21:00:27,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947355138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:27,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:27,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:27,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748010935] [2024-06-21 21:00:27,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:27,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:27,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:27,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:27,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:27,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:27,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 283 transitions, 3068 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:27,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:27,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:27,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:28,087 INFO L124 PetriNetUnfolderBase]: 740/1348 cut-off events. [2024-06-21 21:00:28,088 INFO L125 PetriNetUnfolderBase]: For 251305/251305 co-relation queries the response was YES. [2024-06-21 21:00:28,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12032 conditions, 1348 events. 740/1348 cut-off events. For 251305/251305 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7338 event pairs, 116 based on Foata normal form. 2/1348 useless extension candidates. Maximal degree in co-relation 11873. Up to 1086 conditions per place. [2024-06-21 21:00:28,104 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 223 selfloop transitions, 83 changer transitions 0/308 dead transitions. [2024-06-21 21:00:28,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 308 transitions, 4360 flow [2024-06-21 21:00:28,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 21:00:28,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 21:00:28,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 161 transitions. [2024-06-21 21:00:28,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 21:00:28,105 INFO L175 Difference]: Start difference. First operand has 330 places, 283 transitions, 3068 flow. Second operand 14 states and 161 transitions. [2024-06-21 21:00:28,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 308 transitions, 4360 flow [2024-06-21 21:00:28,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 308 transitions, 4185 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-21 21:00:28,892 INFO L231 Difference]: Finished difference. Result has 335 places, 287 transitions, 3265 flow [2024-06-21 21:00:28,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2893, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3265, PETRI_PLACES=335, PETRI_TRANSITIONS=287} [2024-06-21 21:00:28,892 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-21 21:00:28,892 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 287 transitions, 3265 flow [2024-06-21 21:00:28,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:28,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:28,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:28,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 21:00:28,893 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:28,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:28,893 INFO L85 PathProgramCache]: Analyzing trace with hash 838130490, now seen corresponding path program 19 times [2024-06-21 21:00:28,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:28,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813017983] [2024-06-21 21:00:28,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:28,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:29,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:29,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813017983] [2024-06-21 21:00:29,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813017983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:29,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:29,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:29,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769166712] [2024-06-21 21:00:29,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:29,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:29,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:29,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:29,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:29,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:29,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 287 transitions, 3265 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:29,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:29,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:29,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:30,399 INFO L124 PetriNetUnfolderBase]: 764/1400 cut-off events. [2024-06-21 21:00:30,399 INFO L125 PetriNetUnfolderBase]: For 323078/323078 co-relation queries the response was YES. [2024-06-21 21:00:30,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12464 conditions, 1400 events. 764/1400 cut-off events. For 323078/323078 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7721 event pairs, 132 based on Foata normal form. 14/1412 useless extension candidates. Maximal degree in co-relation 12304. Up to 1252 conditions per place. [2024-06-21 21:00:30,414 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 269 selfloop transitions, 26 changer transitions 13/310 dead transitions. [2024-06-21 21:00:30,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 310 transitions, 4091 flow [2024-06-21 21:00:30,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:30,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-21 21:00:30,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-21 21:00:30,424 INFO L175 Difference]: Start difference. First operand has 335 places, 287 transitions, 3265 flow. Second operand 11 states and 131 transitions. [2024-06-21 21:00:30,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 310 transitions, 4091 flow [2024-06-21 21:00:31,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 310 transitions, 3901 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-21 21:00:31,187 INFO L231 Difference]: Finished difference. Result has 337 places, 283 transitions, 3118 flow [2024-06-21 21:00:31,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3079, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3118, PETRI_PLACES=337, PETRI_TRANSITIONS=283} [2024-06-21 21:00:31,187 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2024-06-21 21:00:31,187 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 283 transitions, 3118 flow [2024-06-21 21:00:31,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:31,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:31,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:31,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 21:00:31,188 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:31,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash -68110, now seen corresponding path program 20 times [2024-06-21 21:00:31,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:31,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61932764] [2024-06-21 21:00:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:31,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:32,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:32,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61932764] [2024-06-21 21:00:32,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61932764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:32,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:32,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:32,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120443786] [2024-06-21 21:00:32,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:32,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:32,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:32,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:32,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:32,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:32,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 283 transitions, 3118 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:32,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:32,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:32,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:32,713 INFO L124 PetriNetUnfolderBase]: 752/1388 cut-off events. [2024-06-21 21:00:32,713 INFO L125 PetriNetUnfolderBase]: For 325995/325995 co-relation queries the response was YES. [2024-06-21 21:00:32,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12259 conditions, 1388 events. 752/1388 cut-off events. For 325995/325995 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7725 event pairs, 134 based on Foata normal form. 14/1400 useless extension candidates. Maximal degree in co-relation 12097. Up to 1244 conditions per place. [2024-06-21 21:00:32,730 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 265 selfloop transitions, 26 changer transitions 12/305 dead transitions. [2024-06-21 21:00:32,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 305 transitions, 3924 flow [2024-06-21 21:00:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:32,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-21 21:00:32,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-21 21:00:32,731 INFO L175 Difference]: Start difference. First operand has 337 places, 283 transitions, 3118 flow. Second operand 11 states and 130 transitions. [2024-06-21 21:00:32,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 305 transitions, 3924 flow [2024-06-21 21:00:33,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 305 transitions, 3846 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-21 21:00:33,554 INFO L231 Difference]: Finished difference. Result has 339 places, 280 transitions, 3088 flow [2024-06-21 21:00:33,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3040, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3088, PETRI_PLACES=339, PETRI_TRANSITIONS=280} [2024-06-21 21:00:33,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-21 21:00:33,555 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 280 transitions, 3088 flow [2024-06-21 21:00:33,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:33,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:33,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:33,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 21:00:33,556 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:33,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:33,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2006111228, now seen corresponding path program 21 times [2024-06-21 21:00:33,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:33,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777592569] [2024-06-21 21:00:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:33,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:34,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:34,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777592569] [2024-06-21 21:00:34,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777592569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:34,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:34,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:34,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600125474] [2024-06-21 21:00:34,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:34,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:34,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:34,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:34,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 280 transitions, 3088 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:34,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:34,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:34,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:34,969 INFO L124 PetriNetUnfolderBase]: 724/1336 cut-off events. [2024-06-21 21:00:34,969 INFO L125 PetriNetUnfolderBase]: For 260251/260251 co-relation queries the response was YES. [2024-06-21 21:00:34,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11921 conditions, 1336 events. 724/1336 cut-off events. For 260251/260251 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7392 event pairs, 128 based on Foata normal form. 2/1336 useless extension candidates. Maximal degree in co-relation 11758. Up to 1118 conditions per place. [2024-06-21 21:00:34,985 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 231 selfloop transitions, 62 changer transitions 0/295 dead transitions. [2024-06-21 21:00:34,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 295 transitions, 3958 flow [2024-06-21 21:00:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:34,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 21:00:34,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-21 21:00:34,987 INFO L175 Difference]: Start difference. First operand has 339 places, 280 transitions, 3088 flow. Second operand 11 states and 125 transitions. [2024-06-21 21:00:34,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 295 transitions, 3958 flow [2024-06-21 21:00:35,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 295 transitions, 3878 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-21 21:00:35,716 INFO L231 Difference]: Finished difference. Result has 341 places, 281 transitions, 3170 flow [2024-06-21 21:00:35,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3008, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3170, PETRI_PLACES=341, PETRI_TRANSITIONS=281} [2024-06-21 21:00:35,716 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-21 21:00:35,716 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 281 transitions, 3170 flow [2024-06-21 21:00:35,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:35,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:35,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:35,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 21:00:35,717 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:35,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:35,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1761623564, now seen corresponding path program 22 times [2024-06-21 21:00:35,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:35,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435116330] [2024-06-21 21:00:35,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:35,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:36,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:36,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435116330] [2024-06-21 21:00:36,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435116330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:36,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:36,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:36,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141795869] [2024-06-21 21:00:36,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:36,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:36,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:36,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:36,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:36,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:36,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 281 transitions, 3170 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:36,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:36,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:36,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:37,140 INFO L124 PetriNetUnfolderBase]: 728/1344 cut-off events. [2024-06-21 21:00:37,140 INFO L125 PetriNetUnfolderBase]: For 265134/265134 co-relation queries the response was YES. [2024-06-21 21:00:37,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12085 conditions, 1344 events. 728/1344 cut-off events. For 265134/265134 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7472 event pairs, 134 based on Foata normal form. 2/1344 useless extension candidates. Maximal degree in co-relation 11921. Up to 1226 conditions per place. [2024-06-21 21:00:37,159 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 234 selfloop transitions, 57 changer transitions 0/293 dead transitions. [2024-06-21 21:00:37,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 293 transitions, 3812 flow [2024-06-21 21:00:37,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 21:00:37,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-21 21:00:37,160 INFO L175 Difference]: Start difference. First operand has 341 places, 281 transitions, 3170 flow. Second operand 11 states and 122 transitions. [2024-06-21 21:00:37,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 293 transitions, 3812 flow [2024-06-21 21:00:38,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 293 transitions, 3624 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-21 21:00:38,115 INFO L231 Difference]: Finished difference. Result has 344 places, 282 transitions, 3138 flow [2024-06-21 21:00:38,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3138, PETRI_PLACES=344, PETRI_TRANSITIONS=282} [2024-06-21 21:00:38,115 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-21 21:00:38,115 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 282 transitions, 3138 flow [2024-06-21 21:00:38,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:38,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:38,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:38,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 21:00:38,116 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:38,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:38,117 INFO L85 PathProgramCache]: Analyzing trace with hash -2001522608, now seen corresponding path program 23 times [2024-06-21 21:00:38,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:38,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785804118] [2024-06-21 21:00:38,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:38,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:39,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:39,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785804118] [2024-06-21 21:00:39,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785804118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:39,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:39,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:39,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878924117] [2024-06-21 21:00:39,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:39,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:39,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:39,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:39,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:39,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:39,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 282 transitions, 3138 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:39,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:39,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:39,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:39,631 INFO L124 PetriNetUnfolderBase]: 735/1357 cut-off events. [2024-06-21 21:00:39,632 INFO L125 PetriNetUnfolderBase]: For 269418/269418 co-relation queries the response was YES. [2024-06-21 21:00:39,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11957 conditions, 1357 events. 735/1357 cut-off events. For 269418/269418 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7568 event pairs, 136 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 11794. Up to 1274 conditions per place. [2024-06-21 21:00:39,649 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 255 selfloop transitions, 39 changer transitions 0/296 dead transitions. [2024-06-21 21:00:39,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 296 transitions, 3803 flow [2024-06-21 21:00:39,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:39,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:39,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 21:00:39,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-21 21:00:39,652 INFO L175 Difference]: Start difference. First operand has 344 places, 282 transitions, 3138 flow. Second operand 11 states and 122 transitions. [2024-06-21 21:00:39,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 296 transitions, 3803 flow [2024-06-21 21:00:40,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 296 transitions, 3648 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-21 21:00:40,561 INFO L231 Difference]: Finished difference. Result has 346 places, 285 transitions, 3120 flow [2024-06-21 21:00:40,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3120, PETRI_PLACES=346, PETRI_TRANSITIONS=285} [2024-06-21 21:00:40,562 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-21 21:00:40,562 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 285 transitions, 3120 flow [2024-06-21 21:00:40,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:40,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:40,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:40,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 21:00:40,562 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:40,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:40,563 INFO L85 PathProgramCache]: Analyzing trace with hash -245740, now seen corresponding path program 24 times [2024-06-21 21:00:40,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:40,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956561126] [2024-06-21 21:00:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:40,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:41,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:41,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:41,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956561126] [2024-06-21 21:00:41,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956561126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:41,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:41,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:41,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286365367] [2024-06-21 21:00:41,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:41,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:41,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:41,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:41,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:41,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:41,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 285 transitions, 3120 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:41,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:41,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:41,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:41,873 INFO L124 PetriNetUnfolderBase]: 746/1378 cut-off events. [2024-06-21 21:00:41,874 INFO L125 PetriNetUnfolderBase]: For 287254/287254 co-relation queries the response was YES. [2024-06-21 21:00:41,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12305 conditions, 1378 events. 746/1378 cut-off events. For 287254/287254 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7709 event pairs, 135 based on Foata normal form. 2/1378 useless extension candidates. Maximal degree in co-relation 12142. Up to 1285 conditions per place. [2024-06-21 21:00:41,890 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 264 selfloop transitions, 34 changer transitions 0/300 dead transitions. [2024-06-21 21:00:41,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 300 transitions, 4032 flow [2024-06-21 21:00:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:41,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-21 21:00:41,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-21 21:00:41,892 INFO L175 Difference]: Start difference. First operand has 346 places, 285 transitions, 3120 flow. Second operand 11 states and 120 transitions. [2024-06-21 21:00:41,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 300 transitions, 4032 flow [2024-06-21 21:00:42,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 300 transitions, 3943 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 21:00:42,783 INFO L231 Difference]: Finished difference. Result has 350 places, 287 transitions, 3167 flow [2024-06-21 21:00:42,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3167, PETRI_PLACES=350, PETRI_TRANSITIONS=287} [2024-06-21 21:00:42,783 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-21 21:00:42,783 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 287 transitions, 3167 flow [2024-06-21 21:00:42,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:42,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:42,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:42,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 21:00:42,785 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:42,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash -241090, now seen corresponding path program 25 times [2024-06-21 21:00:42,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:42,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517487105] [2024-06-21 21:00:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:42,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:43,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:43,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:43,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517487105] [2024-06-21 21:00:43,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517487105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:43,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:43,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:43,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536973352] [2024-06-21 21:00:43,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:43,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:43,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:43,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:43,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:43,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:43,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 287 transitions, 3167 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:43,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:43,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:43,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:44,145 INFO L124 PetriNetUnfolderBase]: 750/1386 cut-off events. [2024-06-21 21:00:44,145 INFO L125 PetriNetUnfolderBase]: For 292565/292565 co-relation queries the response was YES. [2024-06-21 21:00:44,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12401 conditions, 1386 events. 750/1386 cut-off events. For 292565/292565 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7768 event pairs, 139 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 12237. Up to 1324 conditions per place. [2024-06-21 21:00:44,163 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 266 selfloop transitions, 31 changer transitions 0/299 dead transitions. [2024-06-21 21:00:44,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 299 transitions, 3818 flow [2024-06-21 21:00:44,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:44,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:44,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 21:00:44,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-21 21:00:44,165 INFO L175 Difference]: Start difference. First operand has 350 places, 287 transitions, 3167 flow. Second operand 11 states and 118 transitions. [2024-06-21 21:00:44,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 299 transitions, 3818 flow [2024-06-21 21:00:45,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 299 transitions, 3745 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 21:00:45,113 INFO L231 Difference]: Finished difference. Result has 354 places, 288 transitions, 3195 flow [2024-06-21 21:00:45,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3096, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3195, PETRI_PLACES=354, PETRI_TRANSITIONS=288} [2024-06-21 21:00:45,114 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-21 21:00:45,114 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 288 transitions, 3195 flow [2024-06-21 21:00:45,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:45,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:45,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:45,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 21:00:45,114 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:45,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:45,115 INFO L85 PathProgramCache]: Analyzing trace with hash 6188186, now seen corresponding path program 10 times [2024-06-21 21:00:45,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:45,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854929193] [2024-06-21 21:00:45,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:45,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:45,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:45,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854929193] [2024-06-21 21:00:45,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854929193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:45,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:45,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:45,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814145754] [2024-06-21 21:00:45,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:45,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:45,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:45,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:45,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:45,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 288 transitions, 3195 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:45,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:45,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:45,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:46,492 INFO L124 PetriNetUnfolderBase]: 756/1396 cut-off events. [2024-06-21 21:00:46,493 INFO L125 PetriNetUnfolderBase]: For 298589/298589 co-relation queries the response was YES. [2024-06-21 21:00:46,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12583 conditions, 1396 events. 756/1396 cut-off events. For 298589/298589 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7844 event pairs, 135 based on Foata normal form. 2/1396 useless extension candidates. Maximal degree in co-relation 12417. Up to 1286 conditions per place. [2024-06-21 21:00:46,511 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 268 selfloop transitions, 33 changer transitions 3/306 dead transitions. [2024-06-21 21:00:46,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 306 transitions, 3949 flow [2024-06-21 21:00:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:46,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:46,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-21 21:00:46,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-21 21:00:46,512 INFO L175 Difference]: Start difference. First operand has 354 places, 288 transitions, 3195 flow. Second operand 11 states and 126 transitions. [2024-06-21 21:00:46,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 306 transitions, 3949 flow [2024-06-21 21:00:47,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 306 transitions, 3859 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 21:00:47,419 INFO L231 Difference]: Finished difference. Result has 356 places, 290 transitions, 3270 flow [2024-06-21 21:00:47,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3109, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3270, PETRI_PLACES=356, PETRI_TRANSITIONS=290} [2024-06-21 21:00:47,420 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-21 21:00:47,420 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 290 transitions, 3270 flow [2024-06-21 21:00:47,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:47,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:47,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:47,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 21:00:47,420 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:47,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:47,421 INFO L85 PathProgramCache]: Analyzing trace with hash -135974944, now seen corresponding path program 26 times [2024-06-21 21:00:47,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:47,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123925254] [2024-06-21 21:00:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:47,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:48,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:48,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123925254] [2024-06-21 21:00:48,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123925254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:48,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:48,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:48,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253551569] [2024-06-21 21:00:48,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:48,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:48,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:48,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:48,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:48,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:48,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 290 transitions, 3270 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:48,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:48,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:48,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:48,894 INFO L124 PetriNetUnfolderBase]: 733/1357 cut-off events. [2024-06-21 21:00:48,895 INFO L125 PetriNetUnfolderBase]: For 289361/289361 co-relation queries the response was YES. [2024-06-21 21:00:48,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10464 conditions, 1357 events. 733/1357 cut-off events. For 289361/289361 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7658 event pairs, 108 based on Foata normal form. 16/1371 useless extension candidates. Maximal degree in co-relation 10297. Up to 1158 conditions per place. [2024-06-21 21:00:48,914 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 255 selfloop transitions, 41 changer transitions 12/310 dead transitions. [2024-06-21 21:00:48,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 310 transitions, 4046 flow [2024-06-21 21:00:48,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:48,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:48,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 21:00:48,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-21 21:00:48,916 INFO L175 Difference]: Start difference. First operand has 356 places, 290 transitions, 3270 flow. Second operand 11 states and 134 transitions. [2024-06-21 21:00:48,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 310 transitions, 4046 flow [2024-06-21 21:00:49,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 310 transitions, 3825 flow, removed 79 selfloop flow, removed 9 redundant places. [2024-06-21 21:00:49,622 INFO L231 Difference]: Finished difference. Result has 359 places, 285 transitions, 3100 flow [2024-06-21 21:00:49,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3100, PETRI_PLACES=359, PETRI_TRANSITIONS=285} [2024-06-21 21:00:49,623 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2024-06-21 21:00:49,625 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 285 transitions, 3100 flow [2024-06-21 21:00:49,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:49,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:49,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:49,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 21:00:49,637 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:49,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:49,637 INFO L85 PathProgramCache]: Analyzing trace with hash 691321266, now seen corresponding path program 27 times [2024-06-21 21:00:49,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:49,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268897434] [2024-06-21 21:00:49,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:49,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:49,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:50,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268897434] [2024-06-21 21:00:50,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268897434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:50,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:50,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:50,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185248525] [2024-06-21 21:00:50,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:50,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:50,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:50,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:50,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:50,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:50,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 285 transitions, 3100 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:50,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:50,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:50,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:51,007 INFO L124 PetriNetUnfolderBase]: 703/1299 cut-off events. [2024-06-21 21:00:51,007 INFO L125 PetriNetUnfolderBase]: For 207114/207114 co-relation queries the response was YES. [2024-06-21 21:00:51,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9956 conditions, 1299 events. 703/1299 cut-off events. For 207114/207114 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7309 event pairs, 97 based on Foata normal form. 2/1299 useless extension candidates. Maximal degree in co-relation 9787. Up to 1032 conditions per place. [2024-06-21 21:00:51,025 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 218 selfloop transitions, 83 changer transitions 0/303 dead transitions. [2024-06-21 21:00:51,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 303 transitions, 4013 flow [2024-06-21 21:00:51,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:00:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:00:51,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-21 21:00:51,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-21 21:00:51,026 INFO L175 Difference]: Start difference. First operand has 359 places, 285 transitions, 3100 flow. Second operand 12 states and 141 transitions. [2024-06-21 21:00:51,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 303 transitions, 4013 flow [2024-06-21 21:00:51,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 303 transitions, 3880 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-21 21:00:51,716 INFO L231 Difference]: Finished difference. Result has 356 places, 286 transitions, 3176 flow [2024-06-21 21:00:51,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2969, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3176, PETRI_PLACES=356, PETRI_TRANSITIONS=286} [2024-06-21 21:00:51,717 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-21 21:00:51,717 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 286 transitions, 3176 flow [2024-06-21 21:00:51,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:51,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:51,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:51,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 21:00:51,717 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:51,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:51,718 INFO L85 PathProgramCache]: Analyzing trace with hash -240904, now seen corresponding path program 11 times [2024-06-21 21:00:51,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:51,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029517831] [2024-06-21 21:00:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:51,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:52,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:52,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:52,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029517831] [2024-06-21 21:00:52,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029517831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:52,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:52,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:52,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896919257] [2024-06-21 21:00:52,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:52,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:52,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:52,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:52,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:52,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:52,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 286 transitions, 3176 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:52,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:52,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:52,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:53,313 INFO L124 PetriNetUnfolderBase]: 719/1325 cut-off events. [2024-06-21 21:00:53,314 INFO L125 PetriNetUnfolderBase]: For 223949/223949 co-relation queries the response was YES. [2024-06-21 21:00:53,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10659 conditions, 1325 events. 719/1325 cut-off events. For 223949/223949 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7445 event pairs, 113 based on Foata normal form. 2/1325 useless extension candidates. Maximal degree in co-relation 10490. Up to 1200 conditions per place. [2024-06-21 21:00:53,330 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 263 selfloop transitions, 41 changer transitions 3/309 dead transitions. [2024-06-21 21:00:53,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 309 transitions, 4263 flow [2024-06-21 21:00:53,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:00:53,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:00:53,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-21 21:00:53,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 21:00:53,331 INFO L175 Difference]: Start difference. First operand has 356 places, 286 transitions, 3176 flow. Second operand 13 states and 143 transitions. [2024-06-21 21:00:53,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 309 transitions, 4263 flow [2024-06-21 21:00:53,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 309 transitions, 4067 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-21 21:00:53,957 INFO L231 Difference]: Finished difference. Result has 359 places, 290 transitions, 3260 flow [2024-06-21 21:00:53,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2982, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3260, PETRI_PLACES=359, PETRI_TRANSITIONS=290} [2024-06-21 21:00:53,957 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2024-06-21 21:00:53,957 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 290 transitions, 3260 flow [2024-06-21 21:00:53,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:53,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:53,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:53,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 21:00:53,958 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:53,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:53,958 INFO L85 PathProgramCache]: Analyzing trace with hash 30081206, now seen corresponding path program 28 times [2024-06-21 21:00:53,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:53,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838410150] [2024-06-21 21:00:53,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:53,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:54,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:54,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838410150] [2024-06-21 21:00:54,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838410150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:54,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:54,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:54,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835745946] [2024-06-21 21:00:54,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:54,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:54,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:54,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:54,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:54,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:54,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 290 transitions, 3260 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:54,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:54,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:54,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:55,376 INFO L124 PetriNetUnfolderBase]: 757/1399 cut-off events. [2024-06-21 21:00:55,376 INFO L125 PetriNetUnfolderBase]: For 306911/306911 co-relation queries the response was YES. [2024-06-21 21:00:55,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12477 conditions, 1399 events. 757/1399 cut-off events. For 306911/306911 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7885 event pairs, 119 based on Foata normal form. 2/1399 useless extension candidates. Maximal degree in co-relation 12307. Up to 1121 conditions per place. [2024-06-21 21:00:55,394 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 260 selfloop transitions, 51 changer transitions 0/313 dead transitions. [2024-06-21 21:00:55,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 313 transitions, 4317 flow [2024-06-21 21:00:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:00:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:00:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 21:00:55,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-21 21:00:55,396 INFO L175 Difference]: Start difference. First operand has 359 places, 290 transitions, 3260 flow. Second operand 11 states and 139 transitions. [2024-06-21 21:00:55,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 313 transitions, 4317 flow [2024-06-21 21:00:56,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 313 transitions, 4200 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-21 21:00:56,368 INFO L231 Difference]: Finished difference. Result has 361 places, 291 transitions, 3284 flow [2024-06-21 21:00:56,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3284, PETRI_PLACES=361, PETRI_TRANSITIONS=291} [2024-06-21 21:00:56,369 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 331 predicate places. [2024-06-21 21:00:56,369 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 291 transitions, 3284 flow [2024-06-21 21:00:56,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:56,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:56,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:56,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 21:00:56,369 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:56,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:56,370 INFO L85 PathProgramCache]: Analyzing trace with hash 30086042, now seen corresponding path program 12 times [2024-06-21 21:00:56,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:56,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563784863] [2024-06-21 21:00:56,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:56,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:57,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:57,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563784863] [2024-06-21 21:00:57,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563784863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:57,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:57,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:57,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231228066] [2024-06-21 21:00:57,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:57,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:57,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:57,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:57,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:57,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 291 transitions, 3284 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:57,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:57,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:57,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:00:58,041 INFO L124 PetriNetUnfolderBase]: 763/1409 cut-off events. [2024-06-21 21:00:58,042 INFO L125 PetriNetUnfolderBase]: For 311943/311943 co-relation queries the response was YES. [2024-06-21 21:00:58,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12661 conditions, 1409 events. 763/1409 cut-off events. For 311943/311943 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7931 event pairs, 125 based on Foata normal form. 2/1409 useless extension candidates. Maximal degree in co-relation 12489. Up to 1246 conditions per place. [2024-06-21 21:00:58,060 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 262 selfloop transitions, 50 changer transitions 0/314 dead transitions. [2024-06-21 21:00:58,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 314 transitions, 4304 flow [2024-06-21 21:00:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:00:58,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:00:58,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-21 21:00:58,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38213399503722084 [2024-06-21 21:00:58,062 INFO L175 Difference]: Start difference. First operand has 361 places, 291 transitions, 3284 flow. Second operand 13 states and 154 transitions. [2024-06-21 21:00:58,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 314 transitions, 4304 flow [2024-06-21 21:00:58,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 314 transitions, 4181 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 21:00:58,985 INFO L231 Difference]: Finished difference. Result has 367 places, 294 transitions, 3374 flow [2024-06-21 21:00:58,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3161, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3374, PETRI_PLACES=367, PETRI_TRANSITIONS=294} [2024-06-21 21:00:58,985 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2024-06-21 21:00:58,986 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 294 transitions, 3374 flow [2024-06-21 21:00:58,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:58,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:00:58,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:00:58,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 21:00:58,986 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:00:58,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:00:58,987 INFO L85 PathProgramCache]: Analyzing trace with hash -632230782, now seen corresponding path program 29 times [2024-06-21 21:00:58,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:00:58,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695754343] [2024-06-21 21:00:58,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:00:58,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:00:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:00:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:00:59,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:00:59,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695754343] [2024-06-21 21:00:59,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695754343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:00:59,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:00:59,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:00:59,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200175669] [2024-06-21 21:00:59,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:00:59,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:00:59,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:00:59,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:00:59,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:00:59,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:00:59,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 294 transitions, 3374 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:00:59,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:00:59,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:00:59,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:00,421 INFO L124 PetriNetUnfolderBase]: 780/1448 cut-off events. [2024-06-21 21:01:00,422 INFO L125 PetriNetUnfolderBase]: For 387341/387341 co-relation queries the response was YES. [2024-06-21 21:01:00,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12653 conditions, 1448 events. 780/1448 cut-off events. For 387341/387341 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8206 event pairs, 134 based on Foata normal form. 14/1460 useless extension candidates. Maximal degree in co-relation 12480. Up to 1337 conditions per place. [2024-06-21 21:01:00,440 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 281 selfloop transitions, 17 changer transitions 14/314 dead transitions. [2024-06-21 21:01:00,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 314 transitions, 4164 flow [2024-06-21 21:01:00,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:01:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:01:00,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 21:01:00,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-21 21:01:00,441 INFO L175 Difference]: Start difference. First operand has 367 places, 294 transitions, 3374 flow. Second operand 11 states and 125 transitions. [2024-06-21 21:01:00,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 314 transitions, 4164 flow [2024-06-21 21:01:01,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 314 transitions, 3901 flow, removed 58 selfloop flow, removed 11 redundant places. [2024-06-21 21:01:01,335 INFO L231 Difference]: Finished difference. Result has 367 places, 288 transitions, 3088 flow [2024-06-21 21:01:01,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3088, PETRI_PLACES=367, PETRI_TRANSITIONS=288} [2024-06-21 21:01:01,335 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2024-06-21 21:01:01,336 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 288 transitions, 3088 flow [2024-06-21 21:01:01,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:01,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:01,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:01,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 21:01:01,336 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:01,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:01,337 INFO L85 PathProgramCache]: Analyzing trace with hash -346884648, now seen corresponding path program 3 times [2024-06-21 21:01:01,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:01,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701877847] [2024-06-21 21:01:01,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:01,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:02,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:02,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701877847] [2024-06-21 21:01:02,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701877847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:02,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:02,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:01:02,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549105085] [2024-06-21 21:01:02,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:02,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:01:02,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:02,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:01:02,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:01:02,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:02,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 288 transitions, 3088 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:02,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:02,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:02,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:02,805 INFO L124 PetriNetUnfolderBase]: 744/1380 cut-off events. [2024-06-21 21:01:02,805 INFO L125 PetriNetUnfolderBase]: For 304184/304184 co-relation queries the response was YES. [2024-06-21 21:01:02,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11902 conditions, 1380 events. 744/1380 cut-off events. For 304184/304184 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7768 event pairs, 128 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 11729. Up to 1337 conditions per place. [2024-06-21 21:01:02,822 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 279 selfloop transitions, 19 changer transitions 0/300 dead transitions. [2024-06-21 21:01:02,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 300 transitions, 3720 flow [2024-06-21 21:01:02,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:01:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:01:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-21 21:01:02,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-21 21:01:02,824 INFO L175 Difference]: Start difference. First operand has 367 places, 288 transitions, 3088 flow. Second operand 10 states and 107 transitions. [2024-06-21 21:01:02,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 300 transitions, 3720 flow [2024-06-21 21:01:03,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 300 transitions, 3651 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-21 21:01:03,733 INFO L231 Difference]: Finished difference. Result has 364 places, 289 transitions, 3074 flow [2024-06-21 21:01:03,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3019, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3074, PETRI_PLACES=364, PETRI_TRANSITIONS=289} [2024-06-21 21:01:03,733 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-21 21:01:03,733 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 289 transitions, 3074 flow [2024-06-21 21:01:03,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:03,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:03,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:03,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 21:01:03,734 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:03,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:03,734 INFO L85 PathProgramCache]: Analyzing trace with hash 30085856, now seen corresponding path program 30 times [2024-06-21 21:01:03,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:03,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697009702] [2024-06-21 21:01:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:03,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:04,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:04,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:04,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697009702] [2024-06-21 21:01:04,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697009702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:04,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:04,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:01:04,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126889867] [2024-06-21 21:01:04,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:04,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:01:04,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:04,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:01:04,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:01:04,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:04,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 289 transitions, 3074 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:04,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:04,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:04,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:05,255 INFO L124 PetriNetUnfolderBase]: 748/1388 cut-off events. [2024-06-21 21:01:05,256 INFO L125 PetriNetUnfolderBase]: For 309413/309413 co-relation queries the response was YES. [2024-06-21 21:01:05,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11993 conditions, 1388 events. 748/1388 cut-off events. For 309413/309413 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7830 event pairs, 130 based on Foata normal form. 2/1388 useless extension candidates. Maximal degree in co-relation 11820. Up to 1302 conditions per place. [2024-06-21 21:01:05,273 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 262 selfloop transitions, 37 changer transitions 0/301 dead transitions. [2024-06-21 21:01:05,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 301 transitions, 3728 flow [2024-06-21 21:01:05,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:01:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:01:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 21:01:05,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-21 21:01:05,275 INFO L175 Difference]: Start difference. First operand has 364 places, 289 transitions, 3074 flow. Second operand 11 states and 123 transitions. [2024-06-21 21:01:05,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 301 transitions, 3728 flow [2024-06-21 21:01:06,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 301 transitions, 3685 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-21 21:01:06,435 INFO L231 Difference]: Finished difference. Result has 367 places, 290 transitions, 3143 flow [2024-06-21 21:01:06,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3143, PETRI_PLACES=367, PETRI_TRANSITIONS=290} [2024-06-21 21:01:06,436 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2024-06-21 21:01:06,436 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 290 transitions, 3143 flow [2024-06-21 21:01:06,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:06,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:06,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:06,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 21:01:06,439 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:06,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:06,440 INFO L85 PathProgramCache]: Analyzing trace with hash -632230596, now seen corresponding path program 13 times [2024-06-21 21:01:06,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:06,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049902334] [2024-06-21 21:01:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:06,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:07,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:07,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049902334] [2024-06-21 21:01:07,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049902334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:07,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:07,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:01:07,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121443945] [2024-06-21 21:01:07,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:07,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:01:07,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:01:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:01:07,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:07,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 290 transitions, 3143 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:07,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:07,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:07,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:07,847 INFO L124 PetriNetUnfolderBase]: 744/1382 cut-off events. [2024-06-21 21:01:07,847 INFO L125 PetriNetUnfolderBase]: For 299986/299986 co-relation queries the response was YES. [2024-06-21 21:01:07,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11739 conditions, 1382 events. 744/1382 cut-off events. For 299986/299986 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7793 event pairs, 124 based on Foata normal form. 2/1382 useless extension candidates. Maximal degree in co-relation 11565. Up to 1300 conditions per place. [2024-06-21 21:01:07,864 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 273 selfloop transitions, 32 changer transitions 0/307 dead transitions. [2024-06-21 21:01:07,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 307 transitions, 4137 flow [2024-06-21 21:01:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:01:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:01:07,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-21 21:01:07,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-21 21:01:07,868 INFO L175 Difference]: Start difference. First operand has 367 places, 290 transitions, 3143 flow. Second operand 11 states and 123 transitions. [2024-06-21 21:01:07,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 307 transitions, 4137 flow [2024-06-21 21:01:08,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 307 transitions, 3916 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-21 21:01:08,872 INFO L231 Difference]: Finished difference. Result has 369 places, 292 transitions, 3102 flow [2024-06-21 21:01:08,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3102, PETRI_PLACES=369, PETRI_TRANSITIONS=292} [2024-06-21 21:01:08,872 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-21 21:01:08,872 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 292 transitions, 3102 flow [2024-06-21 21:01:08,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:08,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:08,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:08,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 21:01:08,873 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:08,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:08,874 INFO L85 PathProgramCache]: Analyzing trace with hash 228079304, now seen corresponding path program 4 times [2024-06-21 21:01:08,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:08,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441556540] [2024-06-21 21:01:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:08,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:09,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:09,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441556540] [2024-06-21 21:01:09,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441556540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:09,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:09,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:01:09,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720559898] [2024-06-21 21:01:09,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:09,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:01:09,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:09,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:01:09,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:01:09,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:09,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 292 transitions, 3102 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:09,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:09,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:09,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:10,469 INFO L124 PetriNetUnfolderBase]: 748/1390 cut-off events. [2024-06-21 21:01:10,470 INFO L125 PetriNetUnfolderBase]: For 303283/303283 co-relation queries the response was YES. [2024-06-21 21:01:10,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11654 conditions, 1390 events. 748/1390 cut-off events. For 303283/303283 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7879 event pairs, 127 based on Foata normal form. 2/1390 useless extension candidates. Maximal degree in co-relation 11480. Up to 1346 conditions per place. [2024-06-21 21:01:10,487 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 285 selfloop transitions, 18 changer transitions 0/305 dead transitions. [2024-06-21 21:01:10,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 305 transitions, 3750 flow [2024-06-21 21:01:10,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:01:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:01:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-21 21:01:10,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-21 21:01:10,488 INFO L175 Difference]: Start difference. First operand has 369 places, 292 transitions, 3102 flow. Second operand 10 states and 108 transitions. [2024-06-21 21:01:10,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 305 transitions, 3750 flow [2024-06-21 21:01:11,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 305 transitions, 3639 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-21 21:01:11,325 INFO L231 Difference]: Finished difference. Result has 369 places, 293 transitions, 3045 flow [2024-06-21 21:01:11,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3045, PETRI_PLACES=369, PETRI_TRANSITIONS=293} [2024-06-21 21:01:11,325 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-21 21:01:11,326 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 293 transitions, 3045 flow [2024-06-21 21:01:11,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:11,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:11,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:11,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 21:01:11,326 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:11,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:11,326 INFO L85 PathProgramCache]: Analyzing trace with hash 36514946, now seen corresponding path program 31 times [2024-06-21 21:01:11,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:11,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630538741] [2024-06-21 21:01:11,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:11,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:12,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:12,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630538741] [2024-06-21 21:01:12,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630538741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:12,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:12,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:01:12,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568032377] [2024-06-21 21:01:12,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:12,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:01:12,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:12,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:01:12,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:01:12,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:12,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 293 transitions, 3045 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:12,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:12,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:12,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:12,795 INFO L124 PetriNetUnfolderBase]: 772/1442 cut-off events. [2024-06-21 21:01:12,795 INFO L125 PetriNetUnfolderBase]: For 400310/400310 co-relation queries the response was YES. [2024-06-21 21:01:12,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11977 conditions, 1442 events. 772/1442 cut-off events. For 400310/400310 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8246 event pairs, 129 based on Foata normal form. 14/1454 useless extension candidates. Maximal degree in co-relation 11803. Up to 1271 conditions per place. [2024-06-21 21:01:12,813 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 33 changer transitions 13/314 dead transitions. [2024-06-21 21:01:12,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 314 transitions, 3867 flow [2024-06-21 21:01:12,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:01:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:01:12,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 21:01:12,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-21 21:01:12,815 INFO L175 Difference]: Start difference. First operand has 369 places, 293 transitions, 3045 flow. Second operand 11 states and 134 transitions. [2024-06-21 21:01:12,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 314 transitions, 3867 flow [2024-06-21 21:01:13,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 314 transitions, 3809 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 21:01:13,816 INFO L231 Difference]: Finished difference. Result has 372 places, 288 transitions, 3033 flow [2024-06-21 21:01:13,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2987, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3033, PETRI_PLACES=372, PETRI_TRANSITIONS=288} [2024-06-21 21:01:13,817 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2024-06-21 21:01:13,817 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 288 transitions, 3033 flow [2024-06-21 21:01:13,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:13,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:13,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:13,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 21:01:13,817 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:13,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:13,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1828859552, now seen corresponding path program 14 times [2024-06-21 21:01:13,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:13,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335858793] [2024-06-21 21:01:13,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:13,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:14,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:14,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:14,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335858793] [2024-06-21 21:01:14,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335858793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:14,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:14,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:01:14,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128270845] [2024-06-21 21:01:14,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:14,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:01:14,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:14,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:01:14,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:01:14,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:14,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 288 transitions, 3033 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:14,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:14,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:14,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:15,204 INFO L124 PetriNetUnfolderBase]: 730/1366 cut-off events. [2024-06-21 21:01:15,205 INFO L125 PetriNetUnfolderBase]: For 296625/296625 co-relation queries the response was YES. [2024-06-21 21:01:15,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11226 conditions, 1366 events. 730/1366 cut-off events. For 296625/296625 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7760 event pairs, 124 based on Foata normal form. 2/1366 useless extension candidates. Maximal degree in co-relation 11052. Up to 1265 conditions per place. [2024-06-21 21:01:15,220 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 265 selfloop transitions, 34 changer transitions 0/301 dead transitions. [2024-06-21 21:01:15,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 301 transitions, 3665 flow [2024-06-21 21:01:15,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:01:15,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:01:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-21 21:01:15,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-21 21:01:15,221 INFO L175 Difference]: Start difference. First operand has 372 places, 288 transitions, 3033 flow. Second operand 11 states and 125 transitions. [2024-06-21 21:01:15,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 301 transitions, 3665 flow [2024-06-21 21:01:16,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 301 transitions, 3460 flow, removed 52 selfloop flow, removed 12 redundant places. [2024-06-21 21:01:16,180 INFO L231 Difference]: Finished difference. Result has 371 places, 288 transitions, 2901 flow [2024-06-21 21:01:16,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2828, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2901, PETRI_PLACES=371, PETRI_TRANSITIONS=288} [2024-06-21 21:01:16,181 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 341 predicate places. [2024-06-21 21:01:16,181 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 288 transitions, 2901 flow [2024-06-21 21:01:16,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:16,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:16,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:16,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 21:01:16,181 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:16,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:16,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1835115848, now seen corresponding path program 32 times [2024-06-21 21:01:16,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:16,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879719559] [2024-06-21 21:01:16,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:16,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:16,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:16,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879719559] [2024-06-21 21:01:16,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879719559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:16,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:16,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:01:16,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465669775] [2024-06-21 21:01:16,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:16,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:01:16,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:16,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:01:16,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:01:17,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:17,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 288 transitions, 2901 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:17,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:17,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:17,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:17,534 INFO L124 PetriNetUnfolderBase]: 711/1333 cut-off events. [2024-06-21 21:01:17,534 INFO L125 PetriNetUnfolderBase]: For 282945/282945 co-relation queries the response was YES. [2024-06-21 21:01:17,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9047 conditions, 1333 events. 711/1333 cut-off events. For 282945/282945 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7592 event pairs, 109 based on Foata normal form. 14/1345 useless extension candidates. Maximal degree in co-relation 8874. Up to 1172 conditions per place. [2024-06-21 21:01:17,550 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 264 selfloop transitions, 30 changer transitions 12/308 dead transitions. [2024-06-21 21:01:17,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 308 transitions, 3677 flow [2024-06-21 21:01:17,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:01:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:01:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 21:01:17,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-21 21:01:17,551 INFO L175 Difference]: Start difference. First operand has 371 places, 288 transitions, 2901 flow. Second operand 11 states and 134 transitions. [2024-06-21 21:01:17,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 308 transitions, 3677 flow [2024-06-21 21:01:18,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 308 transitions, 3569 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-21 21:01:18,225 INFO L231 Difference]: Finished difference. Result has 372 places, 283 transitions, 2810 flow [2024-06-21 21:01:18,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2810, PETRI_PLACES=372, PETRI_TRANSITIONS=283} [2024-06-21 21:01:18,226 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2024-06-21 21:01:18,226 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 283 transitions, 2810 flow [2024-06-21 21:01:18,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:18,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:18,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:18,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 21:01:18,227 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:18,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:18,227 INFO L85 PathProgramCache]: Analyzing trace with hash 485048914, now seen corresponding path program 15 times [2024-06-21 21:01:18,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:18,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981725939] [2024-06-21 21:01:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:19,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:19,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981725939] [2024-06-21 21:01:19,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981725939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:19,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:19,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:01:19,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703081851] [2024-06-21 21:01:19,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:19,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:01:19,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:19,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:01:19,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:01:19,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:19,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 283 transitions, 2810 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:19,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:19,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:19,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:19,701 INFO L124 PetriNetUnfolderBase]: 671/1258 cut-off events. [2024-06-21 21:01:19,702 INFO L125 PetriNetUnfolderBase]: For 173692/173692 co-relation queries the response was YES. [2024-06-21 21:01:19,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8051 conditions, 1258 events. 671/1258 cut-off events. For 173692/173692 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7143 event pairs, 100 based on Foata normal form. 3/1259 useless extension candidates. Maximal degree in co-relation 7877. Up to 1201 conditions per place. [2024-06-21 21:01:19,717 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 268 selfloop transitions, 26 changer transitions 0/296 dead transitions. [2024-06-21 21:01:19,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 296 transitions, 3432 flow [2024-06-21 21:01:19,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:01:19,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:01:19,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-21 21:01:19,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-21 21:01:19,719 INFO L175 Difference]: Start difference. First operand has 372 places, 283 transitions, 2810 flow. Second operand 11 states and 118 transitions. [2024-06-21 21:01:19,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 296 transitions, 3432 flow [2024-06-21 21:01:20,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 296 transitions, 3201 flow, removed 63 selfloop flow, removed 12 redundant places. [2024-06-21 21:01:20,317 INFO L231 Difference]: Finished difference. Result has 370 places, 283 transitions, 2639 flow [2024-06-21 21:01:20,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2579, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2639, PETRI_PLACES=370, PETRI_TRANSITIONS=283} [2024-06-21 21:01:20,318 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-21 21:01:20,318 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 283 transitions, 2639 flow [2024-06-21 21:01:20,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:20,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:20,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:20,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 21:01:20,319 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:20,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:20,319 INFO L85 PathProgramCache]: Analyzing trace with hash -336409128, now seen corresponding path program 5 times [2024-06-21 21:01:20,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:20,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461539078] [2024-06-21 21:01:20,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:20,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:21,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:21,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461539078] [2024-06-21 21:01:21,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461539078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:21,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:21,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:01:21,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881311912] [2024-06-21 21:01:21,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:21,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:01:21,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:21,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:01:21,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:01:21,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:21,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 283 transitions, 2639 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:21,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:21,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:21,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:21,792 INFO L124 PetriNetUnfolderBase]: 675/1266 cut-off events. [2024-06-21 21:01:21,792 INFO L125 PetriNetUnfolderBase]: For 164108/164108 co-relation queries the response was YES. [2024-06-21 21:01:21,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7892 conditions, 1266 events. 675/1266 cut-off events. For 164108/164108 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7212 event pairs, 102 based on Foata normal form. 2/1266 useless extension candidates. Maximal degree in co-relation 7717. Up to 1226 conditions per place. [2024-06-21 21:01:21,807 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 277 selfloop transitions, 16 changer transitions 0/295 dead transitions. [2024-06-21 21:01:21,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 295 transitions, 3263 flow [2024-06-21 21:01:21,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:01:21,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:01:21,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-21 21:01:21,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-21 21:01:21,808 INFO L175 Difference]: Start difference. First operand has 370 places, 283 transitions, 2639 flow. Second operand 10 states and 105 transitions. [2024-06-21 21:01:21,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 295 transitions, 3263 flow [2024-06-21 21:01:22,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 295 transitions, 3198 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 21:01:22,435 INFO L231 Difference]: Finished difference. Result has 370 places, 284 transitions, 2626 flow [2024-06-21 21:01:22,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2626, PETRI_PLACES=370, PETRI_TRANSITIONS=284} [2024-06-21 21:01:22,448 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-21 21:01:22,449 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 284 transitions, 2626 flow [2024-06-21 21:01:22,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:22,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:22,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:22,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 21:01:22,449 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:22,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:22,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1828613474, now seen corresponding path program 6 times [2024-06-21 21:01:22,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:22,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424942557] [2024-06-21 21:01:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:22,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:23,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:23,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:23,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424942557] [2024-06-21 21:01:23,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424942557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:23,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:23,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:01:23,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152063871] [2024-06-21 21:01:23,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:23,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:01:23,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:23,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:01:23,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:01:23,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:23,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 284 transitions, 2626 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:23,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:23,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:23,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:23,789 INFO L124 PetriNetUnfolderBase]: 672/1261 cut-off events. [2024-06-21 21:01:23,789 INFO L125 PetriNetUnfolderBase]: For 150055/150055 co-relation queries the response was YES. [2024-06-21 21:01:23,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7603 conditions, 1261 events. 672/1261 cut-off events. For 150055/150055 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7187 event pairs, 101 based on Foata normal form. 2/1261 useless extension candidates. Maximal degree in co-relation 7427. Up to 1190 conditions per place. [2024-06-21 21:01:23,804 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 269 selfloop transitions, 25 changer transitions 0/296 dead transitions. [2024-06-21 21:01:23,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 296 transitions, 3244 flow [2024-06-21 21:01:23,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:01:23,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:01:23,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-21 21:01:23,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-21 21:01:23,805 INFO L175 Difference]: Start difference. First operand has 370 places, 284 transitions, 2626 flow. Second operand 10 states and 112 transitions. [2024-06-21 21:01:23,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 296 transitions, 3244 flow [2024-06-21 21:01:24,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 296 transitions, 3202 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 21:01:24,370 INFO L231 Difference]: Finished difference. Result has 372 places, 284 transitions, 2638 flow [2024-06-21 21:01:24,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2584, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2638, PETRI_PLACES=372, PETRI_TRANSITIONS=284} [2024-06-21 21:01:24,371 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 342 predicate places. [2024-06-21 21:01:24,371 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 284 transitions, 2638 flow [2024-06-21 21:01:24,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:24,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:24,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:24,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 21:01:24,372 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:24,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:24,372 INFO L85 PathProgramCache]: Analyzing trace with hash -723251300, now seen corresponding path program 33 times [2024-06-21 21:01:24,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:24,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225712976] [2024-06-21 21:01:24,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:24,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:24,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:24,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225712976] [2024-06-21 21:01:24,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225712976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:24,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:24,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:01:24,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76235589] [2024-06-21 21:01:24,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:24,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:01:24,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:24,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:01:24,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:01:25,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:25,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 284 transitions, 2638 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:25,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:25,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:25,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:25,748 INFO L124 PetriNetUnfolderBase]: 703/1317 cut-off events. [2024-06-21 21:01:25,748 INFO L125 PetriNetUnfolderBase]: For 152491/152491 co-relation queries the response was YES. [2024-06-21 21:01:25,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7920 conditions, 1317 events. 703/1317 cut-off events. For 152491/152491 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7579 event pairs, 84 based on Foata normal form. 2/1317 useless extension candidates. Maximal degree in co-relation 7743. Up to 1155 conditions per place. [2024-06-21 21:01:25,763 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 64 changer transitions 0/327 dead transitions. [2024-06-21 21:01:25,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 327 transitions, 3531 flow [2024-06-21 21:01:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-21 21:01:25,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-21 21:01:25,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 182 transitions. [2024-06-21 21:01:25,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34535104364326374 [2024-06-21 21:01:25,764 INFO L175 Difference]: Start difference. First operand has 372 places, 284 transitions, 2638 flow. Second operand 17 states and 182 transitions. [2024-06-21 21:01:25,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 327 transitions, 3531 flow [2024-06-21 21:01:26,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 327 transitions, 3424 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-21 21:01:26,325 INFO L231 Difference]: Finished difference. Result has 384 places, 302 transitions, 2910 flow [2024-06-21 21:01:26,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2531, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2910, PETRI_PLACES=384, PETRI_TRANSITIONS=302} [2024-06-21 21:01:26,326 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-06-21 21:01:26,326 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 302 transitions, 2910 flow [2024-06-21 21:01:26,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:26,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:26,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:26,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 21:01:26,327 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:26,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:26,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1454482466, now seen corresponding path program 34 times [2024-06-21 21:01:26,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:26,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504170853] [2024-06-21 21:01:26,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:26,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:27,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:27,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504170853] [2024-06-21 21:01:27,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504170853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:27,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:27,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:01:27,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555224383] [2024-06-21 21:01:27,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:27,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:01:27,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:27,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:01:27,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:01:27,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:27,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 302 transitions, 2910 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:27,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:27,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:27,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:27,702 INFO L124 PetriNetUnfolderBase]: 723/1357 cut-off events. [2024-06-21 21:01:27,702 INFO L125 PetriNetUnfolderBase]: For 155028/155028 co-relation queries the response was YES. [2024-06-21 21:01:27,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8227 conditions, 1357 events. 723/1357 cut-off events. For 155028/155028 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7912 event pairs, 83 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 8044. Up to 1237 conditions per place. [2024-06-21 21:01:27,718 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 289 selfloop transitions, 36 changer transitions 0/327 dead transitions. [2024-06-21 21:01:27,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 327 transitions, 3655 flow [2024-06-21 21:01:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:01:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:01:27,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-21 21:01:27,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3598014888337469 [2024-06-21 21:01:27,720 INFO L175 Difference]: Start difference. First operand has 384 places, 302 transitions, 2910 flow. Second operand 13 states and 145 transitions. [2024-06-21 21:01:27,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 327 transitions, 3655 flow [2024-06-21 21:01:28,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 327 transitions, 3530 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 21:01:28,341 INFO L231 Difference]: Finished difference. Result has 391 places, 306 transitions, 2918 flow [2024-06-21 21:01:28,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2785, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2918, PETRI_PLACES=391, PETRI_TRANSITIONS=306} [2024-06-21 21:01:28,341 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-21 21:01:28,342 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 306 transitions, 2918 flow [2024-06-21 21:01:28,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:28,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:28,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:28,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 21:01:28,342 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:28,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:28,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1772326872, now seen corresponding path program 35 times [2024-06-21 21:01:28,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:28,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774326234] [2024-06-21 21:01:28,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:28,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:29,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:29,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774326234] [2024-06-21 21:01:29,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774326234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:29,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:29,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:01:29,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215456367] [2024-06-21 21:01:29,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:29,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:01:29,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:29,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:01:29,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:01:29,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:29,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 306 transitions, 2918 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:29,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:29,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:29,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:29,937 INFO L124 PetriNetUnfolderBase]: 720/1352 cut-off events. [2024-06-21 21:01:29,938 INFO L125 PetriNetUnfolderBase]: For 139967/139967 co-relation queries the response was YES. [2024-06-21 21:01:29,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7891 conditions, 1352 events. 720/1352 cut-off events. For 139967/139967 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7850 event pairs, 86 based on Foata normal form. 2/1352 useless extension candidates. Maximal degree in co-relation 7706. Up to 1266 conditions per place. [2024-06-21 21:01:29,954 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 289 selfloop transitions, 38 changer transitions 0/329 dead transitions. [2024-06-21 21:01:29,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 329 transitions, 3652 flow [2024-06-21 21:01:29,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-21 21:01:29,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-21 21:01:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 157 transitions. [2024-06-21 21:01:29,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33763440860215055 [2024-06-21 21:01:29,956 INFO L175 Difference]: Start difference. First operand has 391 places, 306 transitions, 2918 flow. Second operand 15 states and 157 transitions. [2024-06-21 21:01:29,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 329 transitions, 3652 flow [2024-06-21 21:01:30,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 329 transitions, 3561 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 21:01:30,422 INFO L231 Difference]: Finished difference. Result has 401 places, 309 transitions, 2958 flow [2024-06-21 21:01:30,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2827, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2958, PETRI_PLACES=401, PETRI_TRANSITIONS=309} [2024-06-21 21:01:30,423 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 371 predicate places. [2024-06-21 21:01:30,423 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 309 transitions, 2958 flow [2024-06-21 21:01:30,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:30,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:30,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:30,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 21:01:30,423 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:30,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:30,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1659733156, now seen corresponding path program 36 times [2024-06-21 21:01:30,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:30,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472800569] [2024-06-21 21:01:30,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:30,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:30,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:31,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:31,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472800569] [2024-06-21 21:01:31,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472800569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:31,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:31,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:01:31,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803477313] [2024-06-21 21:01:31,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:31,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:01:31,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:31,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:01:31,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:01:31,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:31,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 309 transitions, 2958 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:31,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:31,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:31,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:32,079 INFO L124 PetriNetUnfolderBase]: 717/1347 cut-off events. [2024-06-21 21:01:32,080 INFO L125 PetriNetUnfolderBase]: For 124075/124075 co-relation queries the response was YES. [2024-06-21 21:01:32,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7589 conditions, 1347 events. 717/1347 cut-off events. For 124075/124075 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7836 event pairs, 81 based on Foata normal form. 2/1347 useless extension candidates. Maximal degree in co-relation 7400. Up to 1245 conditions per place. [2024-06-21 21:01:32,097 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 297 selfloop transitions, 29 changer transitions 0/328 dead transitions. [2024-06-21 21:01:32,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 328 transitions, 3660 flow [2024-06-21 21:01:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:01:32,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:01:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-21 21:01:32,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-21 21:01:32,099 INFO L175 Difference]: Start difference. First operand has 401 places, 309 transitions, 2958 flow. Second operand 12 states and 135 transitions. [2024-06-21 21:01:32,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 328 transitions, 3660 flow [2024-06-21 21:01:32,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 328 transitions, 3489 flow, removed 27 selfloop flow, removed 16 redundant places. [2024-06-21 21:01:32,632 INFO L231 Difference]: Finished difference. Result has 397 places, 309 transitions, 2849 flow [2024-06-21 21:01:32,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2787, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2849, PETRI_PLACES=397, PETRI_TRANSITIONS=309} [2024-06-21 21:01:32,632 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 367 predicate places. [2024-06-21 21:01:32,633 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 309 transitions, 2849 flow [2024-06-21 21:01:32,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 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) [2024-06-21 21:01:32,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:32,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:32,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 21:01:32,633 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:32,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:32,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2132978190, now seen corresponding path program 1 times [2024-06-21 21:01:32,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:32,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252217505] [2024-06-21 21:01:32,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:32,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:33,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:33,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252217505] [2024-06-21 21:01:33,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252217505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:33,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:33,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:01:33,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027164576] [2024-06-21 21:01:33,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:33,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:01:33,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:33,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:01:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:01:33,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:33,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 309 transitions, 2849 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:33,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:33,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:33,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:34,159 INFO L124 PetriNetUnfolderBase]: 758/1434 cut-off events. [2024-06-21 21:01:34,160 INFO L125 PetriNetUnfolderBase]: For 265259/265259 co-relation queries the response was YES. [2024-06-21 21:01:34,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9370 conditions, 1434 events. 758/1434 cut-off events. For 265259/265259 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8419 event pairs, 90 based on Foata normal form. 8/1440 useless extension candidates. Maximal degree in co-relation 9186. Up to 879 conditions per place. [2024-06-21 21:01:34,177 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 271 selfloop transitions, 46 changer transitions 22/341 dead transitions. [2024-06-21 21:01:34,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 341 transitions, 4013 flow [2024-06-21 21:01:34,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:01:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:01:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 156 transitions. [2024-06-21 21:01:34,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 21:01:34,178 INFO L175 Difference]: Start difference. First operand has 397 places, 309 transitions, 2849 flow. Second operand 13 states and 156 transitions. [2024-06-21 21:01:34,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 341 transitions, 4013 flow [2024-06-21 21:01:34,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 341 transitions, 3848 flow, removed 12 selfloop flow, removed 16 redundant places. [2024-06-21 21:01:34,941 INFO L231 Difference]: Finished difference. Result has 394 places, 300 transitions, 2707 flow [2024-06-21 21:01:34,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2684, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2707, PETRI_PLACES=394, PETRI_TRANSITIONS=300} [2024-06-21 21:01:34,942 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 364 predicate places. [2024-06-21 21:01:34,942 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 300 transitions, 2707 flow [2024-06-21 21:01:34,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:34,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:34,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:34,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 21:01:34,943 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:34,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:34,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1747976974, now seen corresponding path program 2 times [2024-06-21 21:01:34,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:34,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560989716] [2024-06-21 21:01:34,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:34,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:35,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:35,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:35,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560989716] [2024-06-21 21:01:35,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560989716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:35,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:35,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:01:35,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019706188] [2024-06-21 21:01:35,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:35,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:01:35,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:35,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:01:35,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:01:35,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:35,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 300 transitions, 2707 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:35,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:35,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:35,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:36,416 INFO L124 PetriNetUnfolderBase]: 738/1400 cut-off events. [2024-06-21 21:01:36,416 INFO L125 PetriNetUnfolderBase]: For 288284/288284 co-relation queries the response was YES. [2024-06-21 21:01:36,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9165 conditions, 1400 events. 738/1400 cut-off events. For 288284/288284 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8191 event pairs, 107 based on Foata normal form. 10/1408 useless extension candidates. Maximal degree in co-relation 8987. Up to 1188 conditions per place. [2024-06-21 21:01:36,428 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 255 selfloop transitions, 55 changer transitions 13/325 dead transitions. [2024-06-21 21:01:36,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 325 transitions, 3519 flow [2024-06-21 21:01:36,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:01:36,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:01:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 147 transitions. [2024-06-21 21:01:36,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36476426799007444 [2024-06-21 21:01:36,430 INFO L175 Difference]: Start difference. First operand has 394 places, 300 transitions, 2707 flow. Second operand 13 states and 147 transitions. [2024-06-21 21:01:36,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 325 transitions, 3519 flow [2024-06-21 21:01:37,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 325 transitions, 3387 flow, removed 5 selfloop flow, removed 17 redundant places. [2024-06-21 21:01:37,031 INFO L231 Difference]: Finished difference. Result has 382 places, 297 transitions, 2666 flow [2024-06-21 21:01:37,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2577, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2666, PETRI_PLACES=382, PETRI_TRANSITIONS=297} [2024-06-21 21:01:37,031 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-21 21:01:37,031 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 297 transitions, 2666 flow [2024-06-21 21:01:37,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:37,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:37,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:37,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 21:01:37,032 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:37,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:37,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2066063328, now seen corresponding path program 3 times [2024-06-21 21:01:37,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:37,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631526658] [2024-06-21 21:01:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:37,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:37,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:37,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631526658] [2024-06-21 21:01:37,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631526658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:37,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:37,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:01:37,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983246137] [2024-06-21 21:01:37,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:37,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:01:37,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:37,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:01:37,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:01:38,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:38,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 297 transitions, 2666 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:38,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:38,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:38,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:38,519 INFO L124 PetriNetUnfolderBase]: 722/1376 cut-off events. [2024-06-21 21:01:38,520 INFO L125 PetriNetUnfolderBase]: For 252866/252866 co-relation queries the response was YES. [2024-06-21 21:01:38,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8891 conditions, 1376 events. 722/1376 cut-off events. For 252866/252866 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8062 event pairs, 102 based on Foata normal form. 8/1382 useless extension candidates. Maximal degree in co-relation 8722. Up to 1158 conditions per place. [2024-06-21 21:01:38,536 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 251 selfloop transitions, 49 changer transitions 17/319 dead transitions. [2024-06-21 21:01:38,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 319 transitions, 3398 flow [2024-06-21 21:01:38,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:01:38,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:01:38,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 144 transitions. [2024-06-21 21:01:38,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573200992555831 [2024-06-21 21:01:38,537 INFO L175 Difference]: Start difference. First operand has 382 places, 297 transitions, 2666 flow. Second operand 13 states and 144 transitions. [2024-06-21 21:01:38,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 319 transitions, 3398 flow [2024-06-21 21:01:39,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 319 transitions, 3276 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 21:01:39,117 INFO L231 Difference]: Finished difference. Result has 382 places, 288 transitions, 2577 flow [2024-06-21 21:01:39,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2577, PETRI_PLACES=382, PETRI_TRANSITIONS=288} [2024-06-21 21:01:39,117 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 352 predicate places. [2024-06-21 21:01:39,118 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 288 transitions, 2577 flow [2024-06-21 21:01:39,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:39,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:39,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:39,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 21:01:39,118 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:39,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:39,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1748126704, now seen corresponding path program 4 times [2024-06-21 21:01:39,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:39,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767659729] [2024-06-21 21:01:39,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:39,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:39,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:39,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:39,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767659729] [2024-06-21 21:01:39,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767659729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:39,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:39,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:01:39,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912658062] [2024-06-21 21:01:39,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:39,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:01:39,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:39,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:01:39,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:01:40,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:40,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 288 transitions, 2577 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:40,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:40,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:40,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:40,567 INFO L124 PetriNetUnfolderBase]: 701/1337 cut-off events. [2024-06-21 21:01:40,567 INFO L125 PetriNetUnfolderBase]: For 252768/252768 co-relation queries the response was YES. [2024-06-21 21:01:40,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8732 conditions, 1337 events. 701/1337 cut-off events. For 252768/252768 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7747 event pairs, 100 based on Foata normal form. 8/1343 useless extension candidates. Maximal degree in co-relation 8564. Up to 1136 conditions per place. [2024-06-21 21:01:40,583 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 248 selfloop transitions, 43 changer transitions 18/311 dead transitions. [2024-06-21 21:01:40,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 311 transitions, 3295 flow [2024-06-21 21:01:40,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:01:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:01:40,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 144 transitions. [2024-06-21 21:01:40,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573200992555831 [2024-06-21 21:01:40,584 INFO L175 Difference]: Start difference. First operand has 382 places, 288 transitions, 2577 flow. Second operand 13 states and 144 transitions. [2024-06-21 21:01:40,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 311 transitions, 3295 flow [2024-06-21 21:01:41,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 311 transitions, 3185 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-21 21:01:41,342 INFO L231 Difference]: Finished difference. Result has 376 places, 280 transitions, 2491 flow [2024-06-21 21:01:41,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2467, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2491, PETRI_PLACES=376, PETRI_TRANSITIONS=280} [2024-06-21 21:01:41,343 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 346 predicate places. [2024-06-21 21:01:41,343 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 280 transitions, 2491 flow [2024-06-21 21:01:41,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:41,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:41,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:41,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 21:01:41,344 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:41,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:41,344 INFO L85 PathProgramCache]: Analyzing trace with hash -2069782398, now seen corresponding path program 5 times [2024-06-21 21:01:41,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:41,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472865626] [2024-06-21 21:01:41,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:41,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:42,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:42,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472865626] [2024-06-21 21:01:42,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472865626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:42,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:42,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:01:42,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256006273] [2024-06-21 21:01:42,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:42,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:01:42,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:42,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:01:42,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:01:42,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:42,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 280 transitions, 2491 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:42,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:42,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:42,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:42,943 INFO L124 PetriNetUnfolderBase]: 684/1306 cut-off events. [2024-06-21 21:01:42,943 INFO L125 PetriNetUnfolderBase]: For 241711/241711 co-relation queries the response was YES. [2024-06-21 21:01:42,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8523 conditions, 1306 events. 684/1306 cut-off events. For 241711/241711 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7544 event pairs, 69 based on Foata normal form. 8/1312 useless extension candidates. Maximal degree in co-relation 8358. Up to 879 conditions per place. [2024-06-21 21:01:42,958 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 239 selfloop transitions, 30 changer transitions 38/309 dead transitions. [2024-06-21 21:01:42,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 309 transitions, 3571 flow [2024-06-21 21:01:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:01:42,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:01:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-06-21 21:01:42,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37220843672456577 [2024-06-21 21:01:42,960 INFO L175 Difference]: Start difference. First operand has 376 places, 280 transitions, 2491 flow. Second operand 13 states and 150 transitions. [2024-06-21 21:01:42,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 309 transitions, 3571 flow [2024-06-21 21:01:43,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 309 transitions, 3453 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-21 21:01:43,590 INFO L231 Difference]: Finished difference. Result has 368 places, 254 transitions, 2239 flow [2024-06-21 21:01:43,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2239, PETRI_PLACES=368, PETRI_TRANSITIONS=254} [2024-06-21 21:01:43,591 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 338 predicate places. [2024-06-21 21:01:43,591 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 254 transitions, 2239 flow [2024-06-21 21:01:43,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:43,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:43,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:43,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 21:01:43,591 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:43,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:43,592 INFO L85 PathProgramCache]: Analyzing trace with hash -359606962, now seen corresponding path program 6 times [2024-06-21 21:01:43,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:43,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653941303] [2024-06-21 21:01:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:43,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:44,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:44,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:44,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653941303] [2024-06-21 21:01:44,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653941303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:44,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:44,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:01:44,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869148706] [2024-06-21 21:01:44,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:44,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:01:44,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:44,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:01:44,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:01:44,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:44,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 254 transitions, 2239 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:44,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:44,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:44,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:45,264 INFO L124 PetriNetUnfolderBase]: 641/1217 cut-off events. [2024-06-21 21:01:45,265 INFO L125 PetriNetUnfolderBase]: For 255102/255102 co-relation queries the response was YES. [2024-06-21 21:01:45,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8262 conditions, 1217 events. 641/1217 cut-off events. For 255102/255102 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6900 event pairs, 83 based on Foata normal form. 10/1225 useless extension candidates. Maximal degree in co-relation 8098. Up to 1040 conditions per place. [2024-06-21 21:01:45,279 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 231 selfloop transitions, 42 changer transitions 13/288 dead transitions. [2024-06-21 21:01:45,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 288 transitions, 3096 flow [2024-06-21 21:01:45,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:01:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:01:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-21 21:01:45,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-21 21:01:45,280 INFO L175 Difference]: Start difference. First operand has 368 places, 254 transitions, 2239 flow. Second operand 12 states and 133 transitions. [2024-06-21 21:01:45,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 288 transitions, 3096 flow [2024-06-21 21:01:45,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 288 transitions, 2979 flow, removed 12 selfloop flow, removed 22 redundant places. [2024-06-21 21:01:45,803 INFO L231 Difference]: Finished difference. Result has 341 places, 263 transitions, 2343 flow [2024-06-21 21:01:45,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2141, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2343, PETRI_PLACES=341, PETRI_TRANSITIONS=263} [2024-06-21 21:01:45,804 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-21 21:01:45,804 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 263 transitions, 2343 flow [2024-06-21 21:01:45,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:45,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:45,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:45,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 21:01:45,804 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:45,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:45,805 INFO L85 PathProgramCache]: Analyzing trace with hash -359612542, now seen corresponding path program 7 times [2024-06-21 21:01:45,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:45,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286606931] [2024-06-21 21:01:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:45,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:46,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:46,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:46,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286606931] [2024-06-21 21:01:46,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286606931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:46,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:46,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:01:46,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126411756] [2024-06-21 21:01:46,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:46,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:01:46,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:46,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:01:46,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:01:46,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:46,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 263 transitions, 2343 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:46,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:46,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:46,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:47,353 INFO L124 PetriNetUnfolderBase]: 637/1217 cut-off events. [2024-06-21 21:01:47,353 INFO L125 PetriNetUnfolderBase]: For 205053/205053 co-relation queries the response was YES. [2024-06-21 21:01:47,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7968 conditions, 1217 events. 637/1217 cut-off events. For 205053/205053 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6948 event pairs, 79 based on Foata normal form. 8/1223 useless extension candidates. Maximal degree in co-relation 7812. Up to 1034 conditions per place. [2024-06-21 21:01:47,368 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 230 selfloop transitions, 36 changer transitions 17/285 dead transitions. [2024-06-21 21:01:47,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 285 transitions, 3016 flow [2024-06-21 21:01:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:01:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:01:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 21:01:47,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-21 21:01:47,369 INFO L175 Difference]: Start difference. First operand has 341 places, 263 transitions, 2343 flow. Second operand 12 states and 130 transitions. [2024-06-21 21:01:47,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 285 transitions, 3016 flow [2024-06-21 21:01:47,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 285 transitions, 2965 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-21 21:01:47,815 INFO L231 Difference]: Finished difference. Result has 345 places, 257 transitions, 2297 flow [2024-06-21 21:01:47,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2292, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2297, PETRI_PLACES=345, PETRI_TRANSITIONS=257} [2024-06-21 21:01:47,815 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-06-21 21:01:47,815 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 257 transitions, 2297 flow [2024-06-21 21:01:47,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:47,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:47,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:47,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 21:01:47,816 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:47,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash -41675918, now seen corresponding path program 8 times [2024-06-21 21:01:47,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:47,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877834442] [2024-06-21 21:01:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:47,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:48,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:48,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877834442] [2024-06-21 21:01:48,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877834442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:48,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:48,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:01:48,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349505120] [2024-06-21 21:01:48,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:48,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:01:48,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:48,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:01:48,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:01:48,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:48,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 257 transitions, 2297 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:48,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:48,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:48,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:49,522 INFO L124 PetriNetUnfolderBase]: 616/1178 cut-off events. [2024-06-21 21:01:49,522 INFO L125 PetriNetUnfolderBase]: For 205342/205342 co-relation queries the response was YES. [2024-06-21 21:01:49,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7833 conditions, 1178 events. 616/1178 cut-off events. For 205342/205342 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6636 event pairs, 69 based on Foata normal form. 8/1184 useless extension candidates. Maximal degree in co-relation 7676. Up to 879 conditions per place. [2024-06-21 21:01:49,536 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 230 selfloop transitions, 27 changer transitions 24/283 dead transitions. [2024-06-21 21:01:49,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 283 transitions, 3295 flow [2024-06-21 21:01:49,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:01:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:01:49,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-21 21:01:49,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-21 21:01:49,537 INFO L175 Difference]: Start difference. First operand has 345 places, 257 transitions, 2297 flow. Second operand 13 states and 143 transitions. [2024-06-21 21:01:49,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 283 transitions, 3295 flow [2024-06-21 21:01:49,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 283 transitions, 3207 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 21:01:49,966 INFO L231 Difference]: Finished difference. Result has 343 places, 241 transitions, 2114 flow [2024-06-21 21:01:49,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2211, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2114, PETRI_PLACES=343, PETRI_TRANSITIONS=241} [2024-06-21 21:01:49,966 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-21 21:01:49,966 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 241 transitions, 2114 flow [2024-06-21 21:01:49,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:49,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:49,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:49,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 21:01:49,967 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:49,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash 102358762, now seen corresponding path program 9 times [2024-06-21 21:01:49,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:49,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494575480] [2024-06-21 21:01:49,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:49,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:50,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:50,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:50,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494575480] [2024-06-21 21:01:50,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494575480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:50,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:50,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:01:50,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177550810] [2024-06-21 21:01:50,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:50,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:01:50,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:50,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:01:50,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:01:51,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:51,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 241 transitions, 2114 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:51,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:51,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:51,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:51,666 INFO L124 PetriNetUnfolderBase]: 630/1208 cut-off events. [2024-06-21 21:01:51,667 INFO L125 PetriNetUnfolderBase]: For 274017/274017 co-relation queries the response was YES. [2024-06-21 21:01:51,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9243 conditions, 1208 events. 630/1208 cut-off events. For 274017/274017 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6810 event pairs, 85 based on Foata normal form. 8/1214 useless extension candidates. Maximal degree in co-relation 9088. Up to 1002 conditions per place. [2024-06-21 21:01:51,680 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 236 selfloop transitions, 27 changer transitions 11/276 dead transitions. [2024-06-21 21:01:51,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 276 transitions, 3191 flow [2024-06-21 21:01:51,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:01:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:01:51,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-21 21:01:51,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-21 21:01:51,681 INFO L175 Difference]: Start difference. First operand has 343 places, 241 transitions, 2114 flow. Second operand 12 states and 131 transitions. [2024-06-21 21:01:51,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 276 transitions, 3191 flow [2024-06-21 21:01:52,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 276 transitions, 3060 flow, removed 17 selfloop flow, removed 20 redundant places. [2024-06-21 21:01:52,277 INFO L231 Difference]: Finished difference. Result has 328 places, 243 transitions, 2110 flow [2024-06-21 21:01:52,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2110, PETRI_PLACES=328, PETRI_TRANSITIONS=243} [2024-06-21 21:01:52,278 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-21 21:01:52,278 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 243 transitions, 2110 flow [2024-06-21 21:01:52,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:52,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:52,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:52,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 21:01:52,279 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:52,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:52,279 INFO L85 PathProgramCache]: Analyzing trace with hash 102364342, now seen corresponding path program 10 times [2024-06-21 21:01:52,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:52,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058722037] [2024-06-21 21:01:52,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:52,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:53,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:53,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058722037] [2024-06-21 21:01:53,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058722037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:53,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:53,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:01:53,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802127804] [2024-06-21 21:01:53,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:53,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:01:53,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:53,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:01:53,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:01:53,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:53,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 243 transitions, 2110 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:53,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:53,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:53,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:53,877 INFO L124 PetriNetUnfolderBase]: 587/1127 cut-off events. [2024-06-21 21:01:53,878 INFO L125 PetriNetUnfolderBase]: For 201899/201899 co-relation queries the response was YES. [2024-06-21 21:01:53,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7532 conditions, 1127 events. 587/1127 cut-off events. For 201899/201899 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6319 event pairs, 76 based on Foata normal form. 10/1135 useless extension candidates. Maximal degree in co-relation 7382. Up to 1002 conditions per place. [2024-06-21 21:01:53,916 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 223 selfloop transitions, 19 changer transitions 21/265 dead transitions. [2024-06-21 21:01:53,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 265 transitions, 2795 flow [2024-06-21 21:01:53,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:01:53,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:01:53,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-21 21:01:53,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-21 21:01:53,918 INFO L175 Difference]: Start difference. First operand has 328 places, 243 transitions, 2110 flow. Second operand 12 states and 125 transitions. [2024-06-21 21:01:53,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 265 transitions, 2795 flow [2024-06-21 21:01:54,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 265 transitions, 2738 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 21:01:54,330 INFO L231 Difference]: Finished difference. Result has 330 places, 235 transitions, 2015 flow [2024-06-21 21:01:54,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2015, PETRI_PLACES=330, PETRI_TRANSITIONS=235} [2024-06-21 21:01:54,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-21 21:01:54,331 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 235 transitions, 2015 flow [2024-06-21 21:01:54,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:54,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:54,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:54,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 21:01:54,331 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:54,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:54,332 INFO L85 PathProgramCache]: Analyzing trace with hash -221078812, now seen corresponding path program 11 times [2024-06-21 21:01:54,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:54,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92955097] [2024-06-21 21:01:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:54,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:55,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:55,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:55,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92955097] [2024-06-21 21:01:55,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92955097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:55,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:55,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:01:55,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205038101] [2024-06-21 21:01:55,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:55,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:01:55,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:55,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:01:55,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:01:55,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:55,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 235 transitions, 2015 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:55,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:55,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:55,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:55,732 INFO L124 PetriNetUnfolderBase]: 562/1080 cut-off events. [2024-06-21 21:01:55,732 INFO L125 PetriNetUnfolderBase]: For 187838/187838 co-relation queries the response was YES. [2024-06-21 21:01:55,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6940 conditions, 1080 events. 562/1080 cut-off events. For 187838/187838 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5997 event pairs, 73 based on Foata normal form. 10/1088 useless extension candidates. Maximal degree in co-relation 6790. Up to 955 conditions per place. [2024-06-21 21:01:55,742 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 214 selfloop transitions, 25 changer transitions 13/254 dead transitions. [2024-06-21 21:01:55,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 254 transitions, 2657 flow [2024-06-21 21:01:55,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:01:55,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:01:55,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-21 21:01:55,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-21 21:01:55,743 INFO L175 Difference]: Start difference. First operand has 330 places, 235 transitions, 2015 flow. Second operand 12 states and 125 transitions. [2024-06-21 21:01:55,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 254 transitions, 2657 flow [2024-06-21 21:01:56,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 254 transitions, 2589 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-21 21:01:56,245 INFO L231 Difference]: Finished difference. Result has 320 places, 230 transitions, 1966 flow [2024-06-21 21:01:56,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1966, PETRI_PLACES=320, PETRI_TRANSITIONS=230} [2024-06-21 21:01:56,246 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-21 21:01:56,246 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 230 transitions, 1966 flow [2024-06-21 21:01:56,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:56,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:56,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:56,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-21 21:01:56,246 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:56,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:56,247 INFO L85 PathProgramCache]: Analyzing trace with hash -221084392, now seen corresponding path program 12 times [2024-06-21 21:01:56,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:56,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125400655] [2024-06-21 21:01:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:56,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:57,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:57,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125400655] [2024-06-21 21:01:57,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125400655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:57,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:57,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:01:57,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6756420] [2024-06-21 21:01:57,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:57,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:01:57,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:57,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:01:57,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:01:57,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:57,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 230 transitions, 1966 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:57,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:57,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:57,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:57,911 INFO L124 PetriNetUnfolderBase]: 524/1010 cut-off events. [2024-06-21 21:01:57,911 INFO L125 PetriNetUnfolderBase]: For 122944/122944 co-relation queries the response was YES. [2024-06-21 21:01:57,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5581 conditions, 1010 events. 524/1010 cut-off events. For 122944/122944 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5599 event pairs, 50 based on Foata normal form. 8/1016 useless extension candidates. Maximal degree in co-relation 5436. Up to 879 conditions per place. [2024-06-21 21:01:57,922 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 203 selfloop transitions, 7 changer transitions 36/248 dead transitions. [2024-06-21 21:01:57,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 248 transitions, 2542 flow [2024-06-21 21:01:57,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:01:57,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:01:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-21 21:01:57,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3279569892473118 [2024-06-21 21:01:57,923 INFO L175 Difference]: Start difference. First operand has 320 places, 230 transitions, 1966 flow. Second operand 12 states and 122 transitions. [2024-06-21 21:01:57,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 248 transitions, 2542 flow [2024-06-21 21:01:58,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 248 transitions, 2482 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 21:01:58,239 INFO L231 Difference]: Finished difference. Result has 318 places, 208 transitions, 1752 flow [2024-06-21 21:01:58,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1908, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1752, PETRI_PLACES=318, PETRI_TRANSITIONS=208} [2024-06-21 21:01:58,240 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-21 21:01:58,240 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 208 transitions, 1752 flow [2024-06-21 21:01:58,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:58,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:58,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:58,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-21 21:01:58,241 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:58,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:58,241 INFO L85 PathProgramCache]: Analyzing trace with hash -692033458, now seen corresponding path program 13 times [2024-06-21 21:01:58,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:58,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142046699] [2024-06-21 21:01:58,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:58,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:01:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:01:59,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:01:59,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142046699] [2024-06-21 21:01:59,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142046699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:01:59,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:01:59,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:01:59,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030874489] [2024-06-21 21:01:59,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:01:59,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:01:59,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:01:59,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:01:59,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:01:59,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:01:59,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 208 transitions, 1752 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:59,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:01:59,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:01:59,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:01:59,595 INFO L124 PetriNetUnfolderBase]: 518/986 cut-off events. [2024-06-21 21:01:59,596 INFO L125 PetriNetUnfolderBase]: For 181326/181326 co-relation queries the response was YES. [2024-06-21 21:01:59,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6676 conditions, 986 events. 518/986 cut-off events. For 181326/181326 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5340 event pairs, 66 based on Foata normal form. 8/992 useless extension candidates. Maximal degree in co-relation 6543. Up to 744 conditions per place. [2024-06-21 21:01:59,606 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 186 selfloop transitions, 37 changer transitions 7/232 dead transitions. [2024-06-21 21:01:59,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 232 transitions, 2620 flow [2024-06-21 21:01:59,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:01:59,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:01:59,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-21 21:01:59,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 21:01:59,607 INFO L175 Difference]: Start difference. First operand has 318 places, 208 transitions, 1752 flow. Second operand 12 states and 144 transitions. [2024-06-21 21:01:59,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 232 transitions, 2620 flow [2024-06-21 21:01:59,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 232 transitions, 2554 flow, removed 22 selfloop flow, removed 14 redundant places. [2024-06-21 21:01:59,958 INFO L231 Difference]: Finished difference. Result has 285 places, 206 transitions, 1770 flow [2024-06-21 21:01:59,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1770, PETRI_PLACES=285, PETRI_TRANSITIONS=206} [2024-06-21 21:01:59,959 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-21 21:01:59,959 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 206 transitions, 1770 flow [2024-06-21 21:01:59,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:01:59,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:01:59,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:01:59,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-21 21:01:59,959 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:01:59,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:01:59,960 INFO L85 PathProgramCache]: Analyzing trace with hash -692027878, now seen corresponding path program 14 times [2024-06-21 21:01:59,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:01:59,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322368376] [2024-06-21 21:01:59,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:01:59,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:01:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:00,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:00,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:00,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322368376] [2024-06-21 21:02:00,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322368376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:00,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:00,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:00,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701290459] [2024-06-21 21:02:00,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:00,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:00,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:00,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:00,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:01,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:01,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 206 transitions, 1770 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:01,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:01,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:01,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:01,354 INFO L124 PetriNetUnfolderBase]: 487/925 cut-off events. [2024-06-21 21:02:01,354 INFO L125 PetriNetUnfolderBase]: For 121958/121958 co-relation queries the response was YES. [2024-06-21 21:02:01,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5202 conditions, 925 events. 487/925 cut-off events. For 121958/121958 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 4984 event pairs, 57 based on Foata normal form. 10/933 useless extension candidates. Maximal degree in co-relation 5077. Up to 744 conditions per place. [2024-06-21 21:02:01,362 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 175 selfloop transitions, 33 changer transitions 15/225 dead transitions. [2024-06-21 21:02:01,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 225 transitions, 2344 flow [2024-06-21 21:02:01,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-21 21:02:01,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 21:02:01,363 INFO L175 Difference]: Start difference. First operand has 285 places, 206 transitions, 1770 flow. Second operand 12 states and 138 transitions. [2024-06-21 21:02:01,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 225 transitions, 2344 flow [2024-06-21 21:02:01,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 225 transitions, 2268 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:01,576 INFO L231 Difference]: Finished difference. Result has 284 places, 201 transitions, 1725 flow [2024-06-21 21:02:01,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1725, PETRI_PLACES=284, PETRI_TRANSITIONS=201} [2024-06-21 21:02:01,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 254 predicate places. [2024-06-21 21:02:01,577 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 201 transitions, 1725 flow [2024-06-21 21:02:01,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:01,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:01,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:01,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-21 21:02:01,577 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:01,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:01,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1906818404, now seen corresponding path program 15 times [2024-06-21 21:02:01,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:01,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099912845] [2024-06-21 21:02:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:01,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:02,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:02,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099912845] [2024-06-21 21:02:02,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099912845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:02,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:02,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:02,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741650118] [2024-06-21 21:02:02,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:02,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:02,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:02,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:02,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:02,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:02,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 201 transitions, 1725 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:02,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:02,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:02,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:02,830 INFO L124 PetriNetUnfolderBase]: 477/907 cut-off events. [2024-06-21 21:02:02,830 INFO L125 PetriNetUnfolderBase]: For 119976/119976 co-relation queries the response was YES. [2024-06-21 21:02:02,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5105 conditions, 907 events. 477/907 cut-off events. For 119976/119976 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4851 event pairs, 57 based on Foata normal form. 10/915 useless extension candidates. Maximal degree in co-relation 4981. Up to 691 conditions per place. [2024-06-21 21:02:02,839 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 161 selfloop transitions, 47 changer transitions 11/221 dead transitions. [2024-06-21 21:02:02,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 221 transitions, 2295 flow [2024-06-21 21:02:02,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:02,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:02,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-21 21:02:02,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-21 21:02:02,854 INFO L175 Difference]: Start difference. First operand has 284 places, 201 transitions, 1725 flow. Second operand 12 states and 144 transitions. [2024-06-21 21:02:02,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 221 transitions, 2295 flow [2024-06-21 21:02:03,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 221 transitions, 2221 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 21:02:03,127 INFO L231 Difference]: Finished difference. Result has 279 places, 198 transitions, 1730 flow [2024-06-21 21:02:03,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1730, PETRI_PLACES=279, PETRI_TRANSITIONS=198} [2024-06-21 21:02:03,127 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-21 21:02:03,127 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 198 transitions, 1730 flow [2024-06-21 21:02:03,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:03,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:03,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:03,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-21 21:02:03,128 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:03,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:03,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1707522194, now seen corresponding path program 16 times [2024-06-21 21:02:03,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:03,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558923150] [2024-06-21 21:02:03,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:03,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:03,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:04,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:04,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558923150] [2024-06-21 21:02:04,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558923150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:04,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:04,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:04,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620680236] [2024-06-21 21:02:04,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:04,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:04,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:04,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:04,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:04,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:04,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 198 transitions, 1730 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:04,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:04,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:04,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:04,606 INFO L124 PetriNetUnfolderBase]: 494/946 cut-off events. [2024-06-21 21:02:04,607 INFO L125 PetriNetUnfolderBase]: For 159711/159711 co-relation queries the response was YES. [2024-06-21 21:02:04,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6378 conditions, 946 events. 494/946 cut-off events. For 159711/159711 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5088 event pairs, 70 based on Foata normal form. 8/952 useless extension candidates. Maximal degree in co-relation 6255. Up to 681 conditions per place. [2024-06-21 21:02:04,615 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 169 selfloop transitions, 44 changer transitions 7/222 dead transitions. [2024-06-21 21:02:04,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 222 transitions, 2556 flow [2024-06-21 21:02:04,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:04,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-21 21:02:04,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3924731182795699 [2024-06-21 21:02:04,617 INFO L175 Difference]: Start difference. First operand has 279 places, 198 transitions, 1730 flow. Second operand 12 states and 146 transitions. [2024-06-21 21:02:04,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 222 transitions, 2556 flow [2024-06-21 21:02:04,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 222 transitions, 2440 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-21 21:02:04,969 INFO L231 Difference]: Finished difference. Result has 276 places, 196 transitions, 1704 flow [2024-06-21 21:02:04,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1704, PETRI_PLACES=276, PETRI_TRANSITIONS=196} [2024-06-21 21:02:04,969 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-21 21:02:04,970 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 196 transitions, 1704 flow [2024-06-21 21:02:04,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:04,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:04,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:04,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-21 21:02:04,970 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:04,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:04,970 INFO L85 PathProgramCache]: Analyzing trace with hash -62333112, now seen corresponding path program 17 times [2024-06-21 21:02:04,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:04,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677512607] [2024-06-21 21:02:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:04,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:05,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:05,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:05,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677512607] [2024-06-21 21:02:05,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677512607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:05,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:05,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:05,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988833694] [2024-06-21 21:02:05,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:05,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:05,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:05,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:05,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:06,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:06,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 196 transitions, 1704 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:06,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:06,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:06,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:06,455 INFO L124 PetriNetUnfolderBase]: 510/982 cut-off events. [2024-06-21 21:02:06,456 INFO L125 PetriNetUnfolderBase]: For 193266/193266 co-relation queries the response was YES. [2024-06-21 21:02:06,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7288 conditions, 982 events. 510/982 cut-off events. For 193266/193266 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5295 event pairs, 86 based on Foata normal form. 8/988 useless extension candidates. Maximal degree in co-relation 7167. Up to 647 conditions per place. [2024-06-21 21:02:06,465 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 165 selfloop transitions, 44 changer transitions 10/221 dead transitions. [2024-06-21 21:02:06,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 221 transitions, 2520 flow [2024-06-21 21:02:06,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:06,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:06,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-21 21:02:06,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-21 21:02:06,466 INFO L175 Difference]: Start difference. First operand has 276 places, 196 transitions, 1704 flow. Second operand 12 states and 148 transitions. [2024-06-21 21:02:06,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 221 transitions, 2520 flow [2024-06-21 21:02:06,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 221 transitions, 2426 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:06,911 INFO L231 Difference]: Finished difference. Result has 275 places, 193 transitions, 1687 flow [2024-06-21 21:02:06,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1687, PETRI_PLACES=275, PETRI_TRANSITIONS=193} [2024-06-21 21:02:06,912 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-21 21:02:06,912 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 193 transitions, 1687 flow [2024-06-21 21:02:06,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:06,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:06,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:06,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-21 21:02:06,913 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:06,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:06,913 INFO L85 PathProgramCache]: Analyzing trace with hash -379315064, now seen corresponding path program 18 times [2024-06-21 21:02:06,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:06,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727383326] [2024-06-21 21:02:06,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:06,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:07,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:07,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:07,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727383326] [2024-06-21 21:02:07,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727383326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:07,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:07,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:07,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651706424] [2024-06-21 21:02:07,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:07,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:07,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:07,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:07,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:08,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:08,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 193 transitions, 1687 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:08,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:08,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:08,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:08,397 INFO L124 PetriNetUnfolderBase]: 478/918 cut-off events. [2024-06-21 21:02:08,397 INFO L125 PetriNetUnfolderBase]: For 149947/149947 co-relation queries the response was YES. [2024-06-21 21:02:08,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6193 conditions, 918 events. 478/918 cut-off events. For 149947/149947 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 4906 event pairs, 68 based on Foata normal form. 8/924 useless extension candidates. Maximal degree in co-relation 6073. Up to 712 conditions per place. [2024-06-21 21:02:08,406 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 156 selfloop transitions, 41 changer transitions 13/212 dead transitions. [2024-06-21 21:02:08,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 212 transitions, 2191 flow [2024-06-21 21:02:08,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:08,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:08,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-21 21:02:08,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-21 21:02:08,407 INFO L175 Difference]: Start difference. First operand has 275 places, 193 transitions, 1687 flow. Second operand 12 states and 141 transitions. [2024-06-21 21:02:08,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 212 transitions, 2191 flow [2024-06-21 21:02:08,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 212 transitions, 2100 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:08,737 INFO L231 Difference]: Finished difference. Result has 272 places, 188 transitions, 1650 flow [2024-06-21 21:02:08,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1650, PETRI_PLACES=272, PETRI_TRANSITIONS=188} [2024-06-21 21:02:08,739 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-21 21:02:08,739 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 188 transitions, 1650 flow [2024-06-21 21:02:08,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:08,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:08,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:08,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-21 21:02:08,739 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:08,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:08,740 INFO L85 PathProgramCache]: Analyzing trace with hash -498088468, now seen corresponding path program 19 times [2024-06-21 21:02:08,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:08,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053487111] [2024-06-21 21:02:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:08,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:09,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:09,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053487111] [2024-06-21 21:02:09,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053487111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:09,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:09,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:09,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322304178] [2024-06-21 21:02:09,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:09,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:09,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:09,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:09,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:09,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:09,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 188 transitions, 1650 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:09,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:09,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:09,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:10,268 INFO L124 PetriNetUnfolderBase]: 444/848 cut-off events. [2024-06-21 21:02:10,268 INFO L125 PetriNetUnfolderBase]: For 106303/106303 co-relation queries the response was YES. [2024-06-21 21:02:10,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4837 conditions, 848 events. 444/848 cut-off events. For 106303/106303 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4440 event pairs, 59 based on Foata normal form. 10/856 useless extension candidates. Maximal degree in co-relation 4719. Up to 673 conditions per place. [2024-06-21 21:02:10,275 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 159 selfloop transitions, 31 changer transitions 15/207 dead transitions. [2024-06-21 21:02:10,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 207 transitions, 2184 flow [2024-06-21 21:02:10,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:10,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:10,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-21 21:02:10,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-21 21:02:10,277 INFO L175 Difference]: Start difference. First operand has 272 places, 188 transitions, 1650 flow. Second operand 12 states and 137 transitions. [2024-06-21 21:02:10,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 207 transitions, 2184 flow [2024-06-21 21:02:10,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 207 transitions, 2084 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-21 21:02:10,466 INFO L231 Difference]: Finished difference. Result has 264 places, 183 transitions, 1585 flow [2024-06-21 21:02:10,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1585, PETRI_PLACES=264, PETRI_TRANSITIONS=183} [2024-06-21 21:02:10,466 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-21 21:02:10,466 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 183 transitions, 1585 flow [2024-06-21 21:02:10,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:10,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:10,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:10,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-21 21:02:10,467 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:10,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:10,467 INFO L85 PathProgramCache]: Analyzing trace with hash -490460112, now seen corresponding path program 1 times [2024-06-21 21:02:10,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:10,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250907945] [2024-06-21 21:02:10,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:10,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:11,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:11,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250907945] [2024-06-21 21:02:11,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250907945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:11,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:11,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:11,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333610819] [2024-06-21 21:02:11,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:11,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:11,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:11,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:11,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:11,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:11,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 183 transitions, 1585 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:11,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:11,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:11,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:11,934 INFO L124 PetriNetUnfolderBase]: 422/802 cut-off events. [2024-06-21 21:02:11,934 INFO L125 PetriNetUnfolderBase]: For 62605/62605 co-relation queries the response was YES. [2024-06-21 21:02:11,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4475 conditions, 802 events. 422/802 cut-off events. For 62605/62605 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4167 event pairs, 50 based on Foata normal form. 2/802 useless extension candidates. Maximal degree in co-relation 4361. Up to 650 conditions per place. [2024-06-21 21:02:11,941 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 158 selfloop transitions, 38 changer transitions 0/198 dead transitions. [2024-06-21 21:02:11,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 198 transitions, 2021 flow [2024-06-21 21:02:11,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:02:11,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:02:11,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-21 21:02:11,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-21 21:02:11,942 INFO L175 Difference]: Start difference. First operand has 264 places, 183 transitions, 1585 flow. Second operand 11 states and 124 transitions. [2024-06-21 21:02:11,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 198 transitions, 2021 flow [2024-06-21 21:02:12,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 198 transitions, 1945 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:12,119 INFO L231 Difference]: Finished difference. Result has 255 places, 184 transitions, 1601 flow [2024-06-21 21:02:12,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1601, PETRI_PLACES=255, PETRI_TRANSITIONS=184} [2024-06-21 21:02:12,119 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-21 21:02:12,119 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 184 transitions, 1601 flow [2024-06-21 21:02:12,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:12,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:12,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:12,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-21 21:02:12,120 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:12,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:12,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1379842168, now seen corresponding path program 20 times [2024-06-21 21:02:12,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:12,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087351330] [2024-06-21 21:02:12,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:12,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:12,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:12,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:12,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:12,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087351330] [2024-06-21 21:02:12,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087351330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:12,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:12,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:12,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619150287] [2024-06-21 21:02:12,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:12,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:12,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:12,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:12,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:13,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:13,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 184 transitions, 1601 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:13,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:13,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:13,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:13,421 INFO L124 PetriNetUnfolderBase]: 463/889 cut-off events. [2024-06-21 21:02:13,421 INFO L125 PetriNetUnfolderBase]: For 124508/124508 co-relation queries the response was YES. [2024-06-21 21:02:13,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 889 events. 463/889 cut-off events. For 124508/124508 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4669 event pairs, 70 based on Foata normal form. 8/895 useless extension candidates. Maximal degree in co-relation 5707. Up to 509 conditions per place. [2024-06-21 21:02:13,428 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 148 selfloop transitions, 47 changer transitions 13/210 dead transitions. [2024-06-21 21:02:13,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 210 transitions, 2365 flow [2024-06-21 21:02:13,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:13,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 21:02:13,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40591397849462363 [2024-06-21 21:02:13,429 INFO L175 Difference]: Start difference. First operand has 255 places, 184 transitions, 1601 flow. Second operand 12 states and 151 transitions. [2024-06-21 21:02:13,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 210 transitions, 2365 flow [2024-06-21 21:02:13,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 210 transitions, 2255 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-21 21:02:13,718 INFO L231 Difference]: Finished difference. Result has 257 places, 180 transitions, 1572 flow [2024-06-21 21:02:13,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1572, PETRI_PLACES=257, PETRI_TRANSITIONS=180} [2024-06-21 21:02:13,718 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-21 21:02:13,718 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 180 transitions, 1572 flow [2024-06-21 21:02:13,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:13,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:13,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:13,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-21 21:02:13,719 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:13,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:13,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1232232568, now seen corresponding path program 21 times [2024-06-21 21:02:13,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:13,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110888320] [2024-06-21 21:02:13,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:13,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:13,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:14,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:14,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:14,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110888320] [2024-06-21 21:02:14,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110888320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:14,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:14,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:14,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896114124] [2024-06-21 21:02:14,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:14,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:14,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:14,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:14,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:14,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:14,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 180 transitions, 1572 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:14,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:14,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:14,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:15,240 INFO L124 PetriNetUnfolderBase]: 478/922 cut-off events. [2024-06-21 21:02:15,240 INFO L125 PetriNetUnfolderBase]: For 169984/169984 co-relation queries the response was YES. [2024-06-21 21:02:15,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6962 conditions, 922 events. 478/922 cut-off events. For 169984/169984 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4864 event pairs, 83 based on Foata normal form. 8/928 useless extension candidates. Maximal degree in co-relation 6851. Up to 663 conditions per place. [2024-06-21 21:02:15,249 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 155 selfloop transitions, 40 changer transitions 7/204 dead transitions. [2024-06-21 21:02:15,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 204 transitions, 2318 flow [2024-06-21 21:02:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:15,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:15,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-21 21:02:15,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-21 21:02:15,251 INFO L175 Difference]: Start difference. First operand has 257 places, 180 transitions, 1572 flow. Second operand 12 states and 145 transitions. [2024-06-21 21:02:15,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 204 transitions, 2318 flow [2024-06-21 21:02:15,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 204 transitions, 2219 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:15,640 INFO L231 Difference]: Finished difference. Result has 252 places, 178 transitions, 1551 flow [2024-06-21 21:02:15,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1551, PETRI_PLACES=252, PETRI_TRANSITIONS=178} [2024-06-21 21:02:15,640 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 222 predicate places. [2024-06-21 21:02:15,640 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 178 transitions, 1551 flow [2024-06-21 21:02:15,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:15,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:15,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:15,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-21 21:02:15,641 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:15,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:15,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1232226988, now seen corresponding path program 22 times [2024-06-21 21:02:15,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:15,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175950419] [2024-06-21 21:02:15,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:15,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:15,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:16,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:16,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175950419] [2024-06-21 21:02:16,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175950419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:16,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:16,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:16,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205905991] [2024-06-21 21:02:16,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:16,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:16,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:16,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:16,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:16,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:16,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 178 transitions, 1551 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:16,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:16,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:16,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:17,151 INFO L124 PetriNetUnfolderBase]: 447/861 cut-off events. [2024-06-21 21:02:17,151 INFO L125 PetriNetUnfolderBase]: For 127884/127884 co-relation queries the response was YES. [2024-06-21 21:02:17,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5705 conditions, 861 events. 447/861 cut-off events. For 127884/127884 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4500 event pairs, 74 based on Foata normal form. 10/869 useless extension candidates. Maximal degree in co-relation 5597. Up to 689 conditions per place. [2024-06-21 21:02:17,159 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 152 selfloop transitions, 28 changer transitions 15/197 dead transitions. [2024-06-21 21:02:17,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 197 transitions, 2053 flow [2024-06-21 21:02:17,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:17,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:17,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-21 21:02:17,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-21 21:02:17,160 INFO L175 Difference]: Start difference. First operand has 252 places, 178 transitions, 1551 flow. Second operand 12 states and 137 transitions. [2024-06-21 21:02:17,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 197 transitions, 2053 flow [2024-06-21 21:02:17,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 197 transitions, 1971 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:17,397 INFO L231 Difference]: Finished difference. Result has 251 places, 173 transitions, 1482 flow [2024-06-21 21:02:17,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1482, PETRI_PLACES=251, PETRI_TRANSITIONS=173} [2024-06-21 21:02:17,398 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-21 21:02:17,398 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 173 transitions, 1482 flow [2024-06-21 21:02:17,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:17,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:17,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:17,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-21 21:02:17,398 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:17,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:17,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1237594948, now seen corresponding path program 23 times [2024-06-21 21:02:17,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:17,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108600511] [2024-06-21 21:02:17,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:17,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:18,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:18,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:18,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108600511] [2024-06-21 21:02:18,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108600511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:18,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:18,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:18,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664449255] [2024-06-21 21:02:18,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:18,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:18,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:18,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:18,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:18,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:18,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 173 transitions, 1482 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:18,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:18,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:18,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:18,825 INFO L124 PetriNetUnfolderBase]: 462/894 cut-off events. [2024-06-21 21:02:18,826 INFO L125 PetriNetUnfolderBase]: For 155602/155602 co-relation queries the response was YES. [2024-06-21 21:02:18,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6696 conditions, 894 events. 462/894 cut-off events. For 155602/155602 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4704 event pairs, 83 based on Foata normal form. 8/900 useless extension candidates. Maximal degree in co-relation 6589. Up to 635 conditions per place. [2024-06-21 21:02:18,833 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 148 selfloop transitions, 40 changer transitions 7/197 dead transitions. [2024-06-21 21:02:18,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 197 transitions, 2206 flow [2024-06-21 21:02:18,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:18,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:18,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-21 21:02:18,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-21 21:02:18,834 INFO L175 Difference]: Start difference. First operand has 251 places, 173 transitions, 1482 flow. Second operand 12 states and 145 transitions. [2024-06-21 21:02:18,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 197 transitions, 2206 flow [2024-06-21 21:02:19,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 197 transitions, 2138 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-21 21:02:19,122 INFO L231 Difference]: Finished difference. Result has 245 places, 171 transitions, 1488 flow [2024-06-21 21:02:19,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1488, PETRI_PLACES=245, PETRI_TRANSITIONS=171} [2024-06-21 21:02:19,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-21 21:02:19,123 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 171 transitions, 1488 flow [2024-06-21 21:02:19,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:19,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:19,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:19,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-21 21:02:19,123 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:19,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:19,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1237589368, now seen corresponding path program 24 times [2024-06-21 21:02:19,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:19,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592313466] [2024-06-21 21:02:19,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:19,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:19,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:19,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592313466] [2024-06-21 21:02:19,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592313466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:19,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:19,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:19,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205938121] [2024-06-21 21:02:19,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:19,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:19,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:19,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:19,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:20,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:20,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 171 transitions, 1488 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:20,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:20,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:20,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:20,362 INFO L124 PetriNetUnfolderBase]: 431/833 cut-off events. [2024-06-21 21:02:20,362 INFO L125 PetriNetUnfolderBase]: For 122314/122314 co-relation queries the response was YES. [2024-06-21 21:02:20,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5536 conditions, 833 events. 431/833 cut-off events. For 122314/122314 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4318 event pairs, 74 based on Foata normal form. 10/841 useless extension candidates. Maximal degree in co-relation 5431. Up to 635 conditions per place. [2024-06-21 21:02:20,368 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 37 changer transitions 13/190 dead transitions. [2024-06-21 21:02:20,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 190 transitions, 1976 flow [2024-06-21 21:02:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 21:02:20,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-21 21:02:20,369 INFO L175 Difference]: Start difference. First operand has 245 places, 171 transitions, 1488 flow. Second operand 12 states and 139 transitions. [2024-06-21 21:02:20,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 190 transitions, 1976 flow [2024-06-21 21:02:20,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 190 transitions, 1894 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:20,591 INFO L231 Difference]: Finished difference. Result has 244 places, 167 transitions, 1451 flow [2024-06-21 21:02:20,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1451, PETRI_PLACES=244, PETRI_TRANSITIONS=167} [2024-06-21 21:02:20,591 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 214 predicate places. [2024-06-21 21:02:20,591 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 167 transitions, 1451 flow [2024-06-21 21:02:20,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:20,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:20,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:20,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-21 21:02:20,592 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:20,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:20,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1694198292, now seen corresponding path program 25 times [2024-06-21 21:02:20,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:20,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056859665] [2024-06-21 21:02:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:20,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:20,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:21,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:21,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056859665] [2024-06-21 21:02:21,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056859665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:21,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:21,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:21,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124257307] [2024-06-21 21:02:21,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:21,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:21,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:21,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:21,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:21,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:21,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 167 transitions, 1451 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:21,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:21,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:21,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:22,135 INFO L124 PetriNetUnfolderBase]: 415/805 cut-off events. [2024-06-21 21:02:22,135 INFO L125 PetriNetUnfolderBase]: For 111371/111371 co-relation queries the response was YES. [2024-06-21 21:02:22,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5147 conditions, 805 events. 415/805 cut-off events. For 111371/111371 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4143 event pairs, 71 based on Foata normal form. 10/813 useless extension candidates. Maximal degree in co-relation 5043. Up to 601 conditions per place. [2024-06-21 21:02:22,143 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 133 selfloop transitions, 41 changer transitions 11/187 dead transitions. [2024-06-21 21:02:22,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 187 transitions, 1935 flow [2024-06-21 21:02:22,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:02:22,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:02:22,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 149 transitions. [2024-06-21 21:02:22,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.369727047146402 [2024-06-21 21:02:22,144 INFO L175 Difference]: Start difference. First operand has 244 places, 167 transitions, 1451 flow. Second operand 13 states and 149 transitions. [2024-06-21 21:02:22,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 187 transitions, 1935 flow [2024-06-21 21:02:22,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 187 transitions, 1845 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:22,345 INFO L231 Difference]: Finished difference. Result has 240 places, 164 transitions, 1433 flow [2024-06-21 21:02:22,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1365, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1433, PETRI_PLACES=240, PETRI_TRANSITIONS=164} [2024-06-21 21:02:22,346 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 210 predicate places. [2024-06-21 21:02:22,346 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 164 transitions, 1433 flow [2024-06-21 21:02:22,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:22,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:22,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:22,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-21 21:02:22,347 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:22,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:22,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1694203872, now seen corresponding path program 26 times [2024-06-21 21:02:22,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:22,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013564923] [2024-06-21 21:02:22,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:22,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:23,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:23,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:23,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013564923] [2024-06-21 21:02:23,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013564923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:23,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:23,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:23,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009995554] [2024-06-21 21:02:23,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:23,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:23,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:23,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:23,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:23,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:23,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 164 transitions, 1433 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:23,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:23,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:23,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:23,903 INFO L124 PetriNetUnfolderBase]: 403/785 cut-off events. [2024-06-21 21:02:23,903 INFO L125 PetriNetUnfolderBase]: For 101094/101094 co-relation queries the response was YES. [2024-06-21 21:02:23,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4983 conditions, 785 events. 403/785 cut-off events. For 101094/101094 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4031 event pairs, 69 based on Foata normal form. 8/791 useless extension candidates. Maximal degree in co-relation 4881. Up to 591 conditions per place. [2024-06-21 21:02:23,909 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 131 selfloop transitions, 38 changer transitions 11/182 dead transitions. [2024-06-21 21:02:23,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 182 transitions, 1867 flow [2024-06-21 21:02:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-21 21:02:23,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 21:02:23,910 INFO L175 Difference]: Start difference. First operand has 240 places, 164 transitions, 1433 flow. Second operand 12 states and 138 transitions. [2024-06-21 21:02:23,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 182 transitions, 1867 flow [2024-06-21 21:02:24,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 182 transitions, 1775 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-21 21:02:24,089 INFO L231 Difference]: Finished difference. Result has 237 places, 161 transitions, 1405 flow [2024-06-21 21:02:24,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1405, PETRI_PLACES=237, PETRI_TRANSITIONS=161} [2024-06-21 21:02:24,090 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-21 21:02:24,090 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 161 transitions, 1405 flow [2024-06-21 21:02:24,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:24,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:24,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:24,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-21 21:02:24,090 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:24,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:24,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1555819872, now seen corresponding path program 27 times [2024-06-21 21:02:24,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:24,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236511867] [2024-06-21 21:02:24,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:24,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:25,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:25,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236511867] [2024-06-21 21:02:25,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236511867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:25,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:25,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:25,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375557313] [2024-06-21 21:02:25,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:25,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:25,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:25,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:25,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:25,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:25,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 161 transitions, 1405 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:25,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:25,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:25,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:25,589 INFO L124 PetriNetUnfolderBase]: 396/772 cut-off events. [2024-06-21 21:02:25,589 INFO L125 PetriNetUnfolderBase]: For 99036/99036 co-relation queries the response was YES. [2024-06-21 21:02:25,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 772 events. 396/772 cut-off events. For 99036/99036 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3943 event pairs, 67 based on Foata normal form. 8/778 useless extension candidates. Maximal degree in co-relation 4793. Up to 605 conditions per place. [2024-06-21 21:02:25,595 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 136 selfloop transitions, 26 changer transitions 16/180 dead transitions. [2024-06-21 21:02:25,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 180 transitions, 1835 flow [2024-06-21 21:02:25,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:25,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:25,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-21 21:02:25,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-21 21:02:25,596 INFO L175 Difference]: Start difference. First operand has 237 places, 161 transitions, 1405 flow. Second operand 12 states and 135 transitions. [2024-06-21 21:02:25,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 180 transitions, 1835 flow [2024-06-21 21:02:25,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 180 transitions, 1751 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:25,751 INFO L231 Difference]: Finished difference. Result has 233 places, 156 transitions, 1343 flow [2024-06-21 21:02:25,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1321, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1343, PETRI_PLACES=233, PETRI_TRANSITIONS=156} [2024-06-21 21:02:25,752 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-21 21:02:25,752 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 156 transitions, 1343 flow [2024-06-21 21:02:25,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:25,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:25,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:25,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-21 21:02:25,753 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:25,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:25,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1694348022, now seen corresponding path program 28 times [2024-06-21 21:02:25,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:25,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786531758] [2024-06-21 21:02:25,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:25,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:26,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:26,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786531758] [2024-06-21 21:02:26,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786531758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:26,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:26,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:26,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919990053] [2024-06-21 21:02:26,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:26,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:26,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:26,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:26,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:26,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 156 transitions, 1343 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:26,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:26,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:26,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:27,005 INFO L124 PetriNetUnfolderBase]: 362/702 cut-off events. [2024-06-21 21:02:27,005 INFO L125 PetriNetUnfolderBase]: For 67811/67811 co-relation queries the response was YES. [2024-06-21 21:02:27,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3890 conditions, 702 events. 362/702 cut-off events. For 67811/67811 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3502 event pairs, 47 based on Foata normal form. 8/708 useless extension candidates. Maximal degree in co-relation 3791. Up to 509 conditions per place. [2024-06-21 21:02:27,010 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 123 selfloop transitions, 32 changer transitions 18/175 dead transitions. [2024-06-21 21:02:27,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 175 transitions, 1763 flow [2024-06-21 21:02:27,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 21:02:27,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-21 21:02:27,011 INFO L175 Difference]: Start difference. First operand has 233 places, 156 transitions, 1343 flow. Second operand 12 states and 136 transitions. [2024-06-21 21:02:27,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 175 transitions, 1763 flow [2024-06-21 21:02:27,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 175 transitions, 1703 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 21:02:27,151 INFO L231 Difference]: Finished difference. Result has 226 places, 150 transitions, 1316 flow [2024-06-21 21:02:27,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1316, PETRI_PLACES=226, PETRI_TRANSITIONS=150} [2024-06-21 21:02:27,152 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-21 21:02:27,152 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 150 transitions, 1316 flow [2024-06-21 21:02:27,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:27,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:27,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:27,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-21 21:02:27,152 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:27,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:27,168 INFO L85 PathProgramCache]: Analyzing trace with hash -140649428, now seen corresponding path program 29 times [2024-06-21 21:02:27,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:27,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447709519] [2024-06-21 21:02:27,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:27,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:28,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:28,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:28,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447709519] [2024-06-21 21:02:28,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447709519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:28,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:28,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:28,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580781480] [2024-06-21 21:02:28,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:28,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:28,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:28,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:28,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:28,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:28,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 150 transitions, 1316 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:28,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:28,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:28,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:28,544 INFO L124 PetriNetUnfolderBase]: 359/693 cut-off events. [2024-06-21 21:02:28,545 INFO L125 PetriNetUnfolderBase]: For 71497/71497 co-relation queries the response was YES. [2024-06-21 21:02:28,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3889 conditions, 693 events. 359/693 cut-off events. For 71497/71497 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3415 event pairs, 44 based on Foata normal form. 10/701 useless extension candidates. Maximal degree in co-relation 3793. Up to 433 conditions per place. [2024-06-21 21:02:28,550 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 86 selfloop transitions, 74 changer transitions 11/173 dead transitions. [2024-06-21 21:02:28,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 173 transitions, 1776 flow [2024-06-21 21:02:28,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:02:28,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:02:28,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 150 transitions. [2024-06-21 21:02:28,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37220843672456577 [2024-06-21 21:02:28,551 INFO L175 Difference]: Start difference. First operand has 226 places, 150 transitions, 1316 flow. Second operand 13 states and 150 transitions. [2024-06-21 21:02:28,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 173 transitions, 1776 flow [2024-06-21 21:02:28,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 173 transitions, 1692 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:28,652 INFO L231 Difference]: Finished difference. Result has 216 places, 149 transitions, 1379 flow [2024-06-21 21:02:28,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1379, PETRI_PLACES=216, PETRI_TRANSITIONS=149} [2024-06-21 21:02:28,652 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-21 21:02:28,652 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 149 transitions, 1379 flow [2024-06-21 21:02:28,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:28,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:28,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:28,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-21 21:02:28,653 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:28,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:28,653 INFO L85 PathProgramCache]: Analyzing trace with hash -64145626, now seen corresponding path program 30 times [2024-06-21 21:02:28,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:28,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492963796] [2024-06-21 21:02:28,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:28,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:29,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:29,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492963796] [2024-06-21 21:02:29,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492963796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:29,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:29,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:29,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639024397] [2024-06-21 21:02:29,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:29,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:29,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:29,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:29,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:29,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:29,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 149 transitions, 1379 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:29,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:29,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:29,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:29,788 INFO L124 PetriNetUnfolderBase]: 347/673 cut-off events. [2024-06-21 21:02:29,788 INFO L125 PetriNetUnfolderBase]: For 57115/57115 co-relation queries the response was YES. [2024-06-21 21:02:29,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3802 conditions, 673 events. 347/673 cut-off events. For 57115/57115 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3289 event pairs, 38 based on Foata normal form. 8/679 useless extension candidates. Maximal degree in co-relation 3711. Up to 423 conditions per place. [2024-06-21 21:02:29,793 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 84 selfloop transitions, 71 changer transitions 11/168 dead transitions. [2024-06-21 21:02:29,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 168 transitions, 1787 flow [2024-06-21 21:02:29,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:29,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:29,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 21:02:29,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-21 21:02:29,794 INFO L175 Difference]: Start difference. First operand has 216 places, 149 transitions, 1379 flow. Second operand 12 states and 139 transitions. [2024-06-21 21:02:29,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 168 transitions, 1787 flow [2024-06-21 21:02:29,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 168 transitions, 1637 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:29,896 INFO L231 Difference]: Finished difference. Result has 215 places, 146 transitions, 1356 flow [2024-06-21 21:02:29,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1356, PETRI_PLACES=215, PETRI_TRANSITIONS=146} [2024-06-21 21:02:29,897 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-06-21 21:02:29,897 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 146 transitions, 1356 flow [2024-06-21 21:02:29,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:29,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:29,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:29,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-21 21:02:29,897 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:29,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:29,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2104958, now seen corresponding path program 31 times [2024-06-21 21:02:29,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:29,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172288380] [2024-06-21 21:02:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:29,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:30,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:30,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172288380] [2024-06-21 21:02:30,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172288380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:30,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:30,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:30,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007743097] [2024-06-21 21:02:30,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:30,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:30,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:30,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:30,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:30,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:30,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 146 transitions, 1356 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:30,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:30,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:30,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:31,189 INFO L124 PetriNetUnfolderBase]: 344/668 cut-off events. [2024-06-21 21:02:31,189 INFO L125 PetriNetUnfolderBase]: For 62899/62899 co-relation queries the response was YES. [2024-06-21 21:02:31,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3814 conditions, 668 events. 344/668 cut-off events. For 62899/62899 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3250 event pairs, 48 based on Foata normal form. 10/676 useless extension candidates. Maximal degree in co-relation 3723. Up to 566 conditions per place. [2024-06-21 21:02:31,195 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 130 selfloop transitions, 21 changer transitions 11/164 dead transitions. [2024-06-21 21:02:31,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 164 transitions, 1774 flow [2024-06-21 21:02:31,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:31,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:31,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 21:02:31,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-21 21:02:31,196 INFO L175 Difference]: Start difference. First operand has 215 places, 146 transitions, 1356 flow. Second operand 12 states and 130 transitions. [2024-06-21 21:02:31,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 164 transitions, 1774 flow [2024-06-21 21:02:31,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 164 transitions, 1628 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 21:02:31,301 INFO L231 Difference]: Finished difference. Result has 212 places, 143 transitions, 1229 flow [2024-06-21 21:02:31,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1229, PETRI_PLACES=212, PETRI_TRANSITIONS=143} [2024-06-21 21:02:31,301 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-21 21:02:31,301 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 143 transitions, 1229 flow [2024-06-21 21:02:31,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:31,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:31,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:31,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-21 21:02:31,302 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:31,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash 199462808, now seen corresponding path program 2 times [2024-06-21 21:02:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019781750] [2024-06-21 21:02:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:31,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:32,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:32,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019781750] [2024-06-21 21:02:32,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019781750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:32,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:32,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:32,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979177855] [2024-06-21 21:02:32,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:32,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:32,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:32,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:32,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:32,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 143 transitions, 1229 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:32,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:32,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:32,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:32,605 INFO L124 PetriNetUnfolderBase]: 332/648 cut-off events. [2024-06-21 21:02:32,605 INFO L125 PetriNetUnfolderBase]: For 55097/55097 co-relation queries the response was YES. [2024-06-21 21:02:32,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3571 conditions, 648 events. 332/648 cut-off events. For 55097/55097 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3155 event pairs, 42 based on Foata normal form. 8/654 useless extension candidates. Maximal degree in co-relation 3481. Up to 559 conditions per place. [2024-06-21 21:02:32,609 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 129 selfloop transitions, 17 changer transitions 12/160 dead transitions. [2024-06-21 21:02:32,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 160 transitions, 1617 flow [2024-06-21 21:02:32,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:02:32,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:02:32,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 21:02:32,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-21 21:02:32,610 INFO L175 Difference]: Start difference. First operand has 212 places, 143 transitions, 1229 flow. Second operand 11 states and 122 transitions. [2024-06-21 21:02:32,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 160 transitions, 1617 flow [2024-06-21 21:02:32,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 160 transitions, 1569 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 21:02:32,713 INFO L231 Difference]: Finished difference. Result has 210 places, 140 transitions, 1195 flow [2024-06-21 21:02:32,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1195, PETRI_PLACES=210, PETRI_TRANSITIONS=140} [2024-06-21 21:02:32,713 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-21 21:02:32,713 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 140 transitions, 1195 flow [2024-06-21 21:02:32,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:32,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:32,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:32,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-21 21:02:32,714 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:32,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:32,714 INFO L85 PathProgramCache]: Analyzing trace with hash 191828872, now seen corresponding path program 32 times [2024-06-21 21:02:32,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:32,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322015753] [2024-06-21 21:02:32,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:32,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:33,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:33,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322015753] [2024-06-21 21:02:33,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322015753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:33,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:33,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:33,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309477989] [2024-06-21 21:02:33,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:33,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:33,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:33,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:33,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:33,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:33,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 140 transitions, 1195 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:33,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:33,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:33,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:33,982 INFO L124 PetriNetUnfolderBase]: 353/691 cut-off events. [2024-06-21 21:02:33,982 INFO L125 PetriNetUnfolderBase]: For 83213/83213 co-relation queries the response was YES. [2024-06-21 21:02:33,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4519 conditions, 691 events. 353/691 cut-off events. For 83213/83213 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3372 event pairs, 55 based on Foata normal form. 8/697 useless extension candidates. Maximal degree in co-relation 4429. Up to 508 conditions per place. [2024-06-21 21:02:33,988 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 126 selfloop transitions, 28 changer transitions 7/163 dead transitions. [2024-06-21 21:02:33,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 163 transitions, 1801 flow [2024-06-21 21:02:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:33,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:33,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-21 21:02:33,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-21 21:02:33,989 INFO L175 Difference]: Start difference. First operand has 210 places, 140 transitions, 1195 flow. Second operand 12 states and 138 transitions. [2024-06-21 21:02:33,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 163 transitions, 1801 flow [2024-06-21 21:02:34,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 163 transitions, 1745 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-21 21:02:34,114 INFO L231 Difference]: Finished difference. Result has 207 places, 138 transitions, 1195 flow [2024-06-21 21:02:34,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1195, PETRI_PLACES=207, PETRI_TRANSITIONS=138} [2024-06-21 21:02:34,114 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 177 predicate places. [2024-06-21 21:02:34,114 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 138 transitions, 1195 flow [2024-06-21 21:02:34,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:34,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:34,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:34,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-21 21:02:34,115 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:34,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:34,116 INFO L85 PathProgramCache]: Analyzing trace with hash 94651788, now seen corresponding path program 33 times [2024-06-21 21:02:34,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:34,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083823962] [2024-06-21 21:02:34,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:34,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:35,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:35,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083823962] [2024-06-21 21:02:35,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083823962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:35,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:35,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:35,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682160339] [2024-06-21 21:02:35,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:35,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:35,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:35,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:35,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:35,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:35,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 138 transitions, 1195 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:35,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:35,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:35,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:35,576 INFO L124 PetriNetUnfolderBase]: 376/740 cut-off events. [2024-06-21 21:02:35,576 INFO L125 PetriNetUnfolderBase]: For 105366/105366 co-relation queries the response was YES. [2024-06-21 21:02:35,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5429 conditions, 740 events. 376/740 cut-off events. For 105366/105366 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3675 event pairs, 72 based on Foata normal form. 8/746 useless extension candidates. Maximal degree in co-relation 5341. Up to 514 conditions per place. [2024-06-21 21:02:35,581 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 118 selfloop transitions, 32 changer transitions 10/162 dead transitions. [2024-06-21 21:02:35,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 162 transitions, 1791 flow [2024-06-21 21:02:35,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:35,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:35,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-21 21:02:35,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-21 21:02:35,582 INFO L175 Difference]: Start difference. First operand has 207 places, 138 transitions, 1195 flow. Second operand 12 states and 141 transitions. [2024-06-21 21:02:35,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 162 transitions, 1791 flow [2024-06-21 21:02:35,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 162 transitions, 1729 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:35,730 INFO L231 Difference]: Finished difference. Result has 206 places, 135 transitions, 1182 flow [2024-06-21 21:02:35,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1182, PETRI_PLACES=206, PETRI_TRANSITIONS=135} [2024-06-21 21:02:35,730 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-21 21:02:35,730 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 135 transitions, 1182 flow [2024-06-21 21:02:35,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:35,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:35,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:35,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-21 21:02:35,731 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:35,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:35,731 INFO L85 PathProgramCache]: Analyzing trace with hash 212247866, now seen corresponding path program 34 times [2024-06-21 21:02:35,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:35,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376917947] [2024-06-21 21:02:35,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:35,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:36,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:36,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:36,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376917947] [2024-06-21 21:02:36,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376917947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:36,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:36,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:36,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517672539] [2024-06-21 21:02:36,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:36,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:36,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:36,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:36,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:36,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:36,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 135 transitions, 1182 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:36,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:36,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:36,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:36,987 INFO L124 PetriNetUnfolderBase]: 341/671 cut-off events. [2024-06-21 21:02:36,987 INFO L125 PetriNetUnfolderBase]: For 82304/82304 co-relation queries the response was YES. [2024-06-21 21:02:36,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4416 conditions, 671 events. 341/671 cut-off events. For 82304/82304 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3243 event pairs, 63 based on Foata normal form. 10/679 useless extension candidates. Maximal degree in co-relation 4329. Up to 575 conditions per place. [2024-06-21 21:02:36,992 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 120 selfloop transitions, 15 changer transitions 16/153 dead transitions. [2024-06-21 21:02:36,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 153 transitions, 1574 flow [2024-06-21 21:02:36,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:36,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:36,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 21:02:36,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-21 21:02:36,993 INFO L175 Difference]: Start difference. First operand has 206 places, 135 transitions, 1182 flow. Second operand 12 states and 130 transitions. [2024-06-21 21:02:36,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 153 transitions, 1574 flow [2024-06-21 21:02:37,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 153 transitions, 1487 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:37,108 INFO L231 Difference]: Finished difference. Result has 203 places, 129 transitions, 1080 flow [2024-06-21 21:02:37,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1080, PETRI_PLACES=203, PETRI_TRANSITIONS=129} [2024-06-21 21:02:37,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-21 21:02:37,109 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 129 transitions, 1080 flow [2024-06-21 21:02:37,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:37,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:37,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:37,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-21 21:02:37,109 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:37,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:37,110 INFO L85 PathProgramCache]: Analyzing trace with hash -2110538, now seen corresponding path program 35 times [2024-06-21 21:02:37,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:37,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115250028] [2024-06-21 21:02:37,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:37,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:37,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:37,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115250028] [2024-06-21 21:02:37,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115250028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:37,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:37,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:37,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953336782] [2024-06-21 21:02:37,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:37,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:37,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:37,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:37,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:38,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:38,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 129 transitions, 1080 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:38,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:38,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:38,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:38,388 INFO L124 PetriNetUnfolderBase]: 326/642 cut-off events. [2024-06-21 21:02:38,388 INFO L125 PetriNetUnfolderBase]: For 74699/74699 co-relation queries the response was YES. [2024-06-21 21:02:38,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4165 conditions, 642 events. 326/642 cut-off events. For 74699/74699 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3064 event pairs, 57 based on Foata normal form. 8/648 useless extension candidates. Maximal degree in co-relation 4080. Up to 536 conditions per place. [2024-06-21 21:02:38,393 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 107 selfloop transitions, 25 changer transitions 13/147 dead transitions. [2024-06-21 21:02:38,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 147 transitions, 1440 flow [2024-06-21 21:02:38,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:38,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:38,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 21:02:38,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-21 21:02:38,394 INFO L175 Difference]: Start difference. First operand has 203 places, 129 transitions, 1080 flow. Second operand 12 states and 130 transitions. [2024-06-21 21:02:38,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 147 transitions, 1440 flow [2024-06-21 21:02:38,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 147 transitions, 1394 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-21 21:02:38,486 INFO L231 Difference]: Finished difference. Result has 194 places, 125 transitions, 1056 flow [2024-06-21 21:02:38,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1036, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1056, PETRI_PLACES=194, PETRI_TRANSITIONS=125} [2024-06-21 21:02:38,487 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-21 21:02:38,487 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 125 transitions, 1056 flow [2024-06-21 21:02:38,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:38,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:38,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:38,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-21 21:02:38,487 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:38,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:38,488 INFO L85 PathProgramCache]: Analyzing trace with hash 950887688, now seen corresponding path program 36 times [2024-06-21 21:02:38,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:38,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775220361] [2024-06-21 21:02:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:38,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:38,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:39,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:39,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:39,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775220361] [2024-06-21 21:02:39,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775220361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:39,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:39,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:39,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676559810] [2024-06-21 21:02:39,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:39,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:39,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:39,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:39,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:39,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:39,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 125 transitions, 1056 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:39,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:39,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:39,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:39,681 INFO L124 PetriNetUnfolderBase]: 322/634 cut-off events. [2024-06-21 21:02:39,682 INFO L125 PetriNetUnfolderBase]: For 71366/71366 co-relation queries the response was YES. [2024-06-21 21:02:39,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4059 conditions, 634 events. 322/634 cut-off events. For 71366/71366 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3016 event pairs, 61 based on Foata normal form. 10/642 useless extension candidates. Maximal degree in co-relation 3978. Up to 498 conditions per place. [2024-06-21 21:02:39,686 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 97 selfloop transitions, 35 changer transitions 11/145 dead transitions. [2024-06-21 21:02:39,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 145 transitions, 1436 flow [2024-06-21 21:02:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 21:02:39,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-21 21:02:39,687 INFO L175 Difference]: Start difference. First operand has 194 places, 125 transitions, 1056 flow. Second operand 12 states and 136 transitions. [2024-06-21 21:02:39,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 145 transitions, 1436 flow [2024-06-21 21:02:39,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 145 transitions, 1370 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:39,765 INFO L231 Difference]: Finished difference. Result has 188 places, 122 transitions, 1047 flow [2024-06-21 21:02:39,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1047, PETRI_PLACES=188, PETRI_TRANSITIONS=122} [2024-06-21 21:02:39,766 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-21 21:02:39,766 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 122 transitions, 1047 flow [2024-06-21 21:02:39,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:39,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:39,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:39,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-21 21:02:39,766 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:39,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:39,767 INFO L85 PathProgramCache]: Analyzing trace with hash 74388104, now seen corresponding path program 37 times [2024-06-21 21:02:39,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:39,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044830573] [2024-06-21 21:02:39,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:39,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:40,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:40,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044830573] [2024-06-21 21:02:40,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044830573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:40,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:40,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:40,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257562520] [2024-06-21 21:02:40,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:40,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:40,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:40,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:40,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:40,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:40,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 122 transitions, 1047 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:40,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:40,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:40,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:41,204 INFO L124 PetriNetUnfolderBase]: 320/632 cut-off events. [2024-06-21 21:02:41,204 INFO L125 PetriNetUnfolderBase]: For 65298/65298 co-relation queries the response was YES. [2024-06-21 21:02:41,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3976 conditions, 632 events. 320/632 cut-off events. For 65298/65298 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3007 event pairs, 61 based on Foata normal form. 10/640 useless extension candidates. Maximal degree in co-relation 3898. Up to 474 conditions per place. [2024-06-21 21:02:41,208 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 91 selfloop transitions, 40 changer transitions 11/144 dead transitions. [2024-06-21 21:02:41,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 144 transitions, 1433 flow [2024-06-21 21:02:41,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:41,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-21 21:02:41,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-21 21:02:41,210 INFO L175 Difference]: Start difference. First operand has 188 places, 122 transitions, 1047 flow. Second operand 12 states and 141 transitions. [2024-06-21 21:02:41,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 144 transitions, 1433 flow [2024-06-21 21:02:41,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 144 transitions, 1359 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:41,293 INFO L231 Difference]: Finished difference. Result has 186 places, 121 transitions, 1048 flow [2024-06-21 21:02:41,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1048, PETRI_PLACES=186, PETRI_TRANSITIONS=121} [2024-06-21 21:02:41,293 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-21 21:02:41,293 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 121 transitions, 1048 flow [2024-06-21 21:02:41,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:41,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:41,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:41,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-21 21:02:41,294 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:41,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:41,294 INFO L85 PathProgramCache]: Analyzing trace with hash 12940496, now seen corresponding path program 38 times [2024-06-21 21:02:41,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:41,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592707655] [2024-06-21 21:02:41,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:41,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:42,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:42,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592707655] [2024-06-21 21:02:42,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592707655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:42,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:42,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:42,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875394162] [2024-06-21 21:02:42,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:42,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:42,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:42,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:42,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:42,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 121 transitions, 1048 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:42,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:42,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:42,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:42,569 INFO L124 PetriNetUnfolderBase]: 308/612 cut-off events. [2024-06-21 21:02:42,569 INFO L125 PetriNetUnfolderBase]: For 59183/59183 co-relation queries the response was YES. [2024-06-21 21:02:42,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3863 conditions, 612 events. 308/612 cut-off events. For 59183/59183 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2911 event pairs, 57 based on Foata normal form. 8/618 useless extension candidates. Maximal degree in co-relation 3786. Up to 486 conditions per place. [2024-06-21 21:02:42,573 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 94 selfloop transitions, 33 changer transitions 11/140 dead transitions. [2024-06-21 21:02:42,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 140 transitions, 1394 flow [2024-06-21 21:02:42,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:42,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:42,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-21 21:02:42,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-21 21:02:42,574 INFO L175 Difference]: Start difference. First operand has 186 places, 121 transitions, 1048 flow. Second operand 12 states and 133 transitions. [2024-06-21 21:02:42,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 140 transitions, 1394 flow [2024-06-21 21:02:42,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 140 transitions, 1312 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 21:02:42,657 INFO L231 Difference]: Finished difference. Result has 186 places, 118 transitions, 1015 flow [2024-06-21 21:02:42,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1015, PETRI_PLACES=186, PETRI_TRANSITIONS=118} [2024-06-21 21:02:42,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-21 21:02:42,657 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 118 transitions, 1015 flow [2024-06-21 21:02:42,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:42,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:42,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:42,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-21 21:02:42,658 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:42,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:42,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1224387642, now seen corresponding path program 39 times [2024-06-21 21:02:42,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:42,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224917529] [2024-06-21 21:02:42,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:42,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:42,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:43,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:43,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224917529] [2024-06-21 21:02:43,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224917529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:43,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:43,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:43,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705421449] [2024-06-21 21:02:43,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:43,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:43,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:43,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:43,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:43,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:43,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 118 transitions, 1015 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:43,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:43,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:43,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:44,202 INFO L124 PetriNetUnfolderBase]: 301/599 cut-off events. [2024-06-21 21:02:44,203 INFO L125 PetriNetUnfolderBase]: For 59175/59175 co-relation queries the response was YES. [2024-06-21 21:02:44,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3807 conditions, 599 events. 301/599 cut-off events. For 59175/59175 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2779 event pairs, 59 based on Foata normal form. 8/605 useless extension candidates. Maximal degree in co-relation 3730. Up to 340 conditions per place. [2024-06-21 21:02:44,206 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 89 selfloop transitions, 42 changer transitions 11/144 dead transitions. [2024-06-21 21:02:44,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 144 transitions, 1549 flow [2024-06-21 21:02:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:02:44,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:02:44,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 154 transitions. [2024-06-21 21:02:44,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38213399503722084 [2024-06-21 21:02:44,207 INFO L175 Difference]: Start difference. First operand has 186 places, 118 transitions, 1015 flow. Second operand 13 states and 154 transitions. [2024-06-21 21:02:44,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 144 transitions, 1549 flow [2024-06-21 21:02:44,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 144 transitions, 1471 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:44,270 INFO L231 Difference]: Finished difference. Result has 183 places, 114 transitions, 1006 flow [2024-06-21 21:02:44,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1006, PETRI_PLACES=183, PETRI_TRANSITIONS=114} [2024-06-21 21:02:44,270 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 153 predicate places. [2024-06-21 21:02:44,270 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 114 transitions, 1006 flow [2024-06-21 21:02:44,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:44,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:44,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:44,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-21 21:02:44,271 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:44,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:44,271 INFO L85 PathProgramCache]: Analyzing trace with hash -7617068, now seen corresponding path program 40 times [2024-06-21 21:02:44,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:44,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109816929] [2024-06-21 21:02:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:44,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:45,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:45,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:45,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109816929] [2024-06-21 21:02:45,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109816929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:45,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:45,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:45,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957041301] [2024-06-21 21:02:45,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:45,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:45,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:45,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:45,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:45,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:45,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 114 transitions, 1006 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:45,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:45,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:45,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:45,695 INFO L124 PetriNetUnfolderBase]: 319/637 cut-off events. [2024-06-21 21:02:45,696 INFO L125 PetriNetUnfolderBase]: For 74013/74013 co-relation queries the response was YES. [2024-06-21 21:02:45,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4561 conditions, 637 events. 319/637 cut-off events. For 74013/74013 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3020 event pairs, 64 based on Foata normal form. 8/643 useless extension candidates. Maximal degree in co-relation 4486. Up to 421 conditions per place. [2024-06-21 21:02:45,700 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 95 selfloop transitions, 29 changer transitions 13/139 dead transitions. [2024-06-21 21:02:45,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 139 transitions, 1524 flow [2024-06-21 21:02:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:45,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 21:02:45,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-21 21:02:45,701 INFO L175 Difference]: Start difference. First operand has 183 places, 114 transitions, 1006 flow. Second operand 12 states and 139 transitions. [2024-06-21 21:02:45,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 139 transitions, 1524 flow [2024-06-21 21:02:45,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 139 transitions, 1426 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-21 21:02:45,792 INFO L231 Difference]: Finished difference. Result has 177 places, 108 transitions, 926 flow [2024-06-21 21:02:45,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=926, PETRI_PLACES=177, PETRI_TRANSITIONS=108} [2024-06-21 21:02:45,792 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 147 predicate places. [2024-06-21 21:02:45,793 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 108 transitions, 926 flow [2024-06-21 21:02:45,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:45,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:45,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:45,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-21 21:02:45,793 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:45,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1249720760, now seen corresponding path program 3 times [2024-06-21 21:02:45,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:45,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121717808] [2024-06-21 21:02:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:45,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:46,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:46,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:46,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121717808] [2024-06-21 21:02:46,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121717808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:46,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:46,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:46,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505939029] [2024-06-21 21:02:46,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:46,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:46,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:46,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:46,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:46,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:46,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 108 transitions, 926 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:46,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:46,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:46,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:47,328 INFO L124 PetriNetUnfolderBase]: 298/590 cut-off events. [2024-06-21 21:02:47,329 INFO L125 PetriNetUnfolderBase]: For 57152/57152 co-relation queries the response was YES. [2024-06-21 21:02:47,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4272 conditions, 590 events. 298/590 cut-off events. For 57152/57152 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2737 event pairs, 72 based on Foata normal form. 2/590 useless extension candidates. Maximal degree in co-relation 4200. Up to 538 conditions per place. [2024-06-21 21:02:47,333 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 98 selfloop transitions, 22 changer transitions 0/122 dead transitions. [2024-06-21 21:02:47,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 122 transitions, 1210 flow [2024-06-21 21:02:47,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:02:47,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:02:47,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 21:02:47,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-21 21:02:47,334 INFO L175 Difference]: Start difference. First operand has 177 places, 108 transitions, 926 flow. Second operand 11 states and 116 transitions. [2024-06-21 21:02:47,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 122 transitions, 1210 flow [2024-06-21 21:02:47,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 122 transitions, 1118 flow, removed 6 selfloop flow, removed 16 redundant places. [2024-06-21 21:02:47,409 INFO L231 Difference]: Finished difference. Result has 165 places, 109 transitions, 897 flow [2024-06-21 21:02:47,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=897, PETRI_PLACES=165, PETRI_TRANSITIONS=109} [2024-06-21 21:02:47,410 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 135 predicate places. [2024-06-21 21:02:47,410 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 109 transitions, 897 flow [2024-06-21 21:02:47,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:47,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:47,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:47,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-21 21:02:47,411 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:47,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:47,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1896096524, now seen corresponding path program 41 times [2024-06-21 21:02:47,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:47,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461269744] [2024-06-21 21:02:47,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:47,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:48,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:48,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461269744] [2024-06-21 21:02:48,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461269744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:48,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:48,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:48,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435173426] [2024-06-21 21:02:48,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:48,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:48,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:48,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:48,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:48,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:48,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 109 transitions, 897 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:48,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:48,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:48,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:48,719 INFO L124 PetriNetUnfolderBase]: 310/618 cut-off events. [2024-06-21 21:02:48,719 INFO L125 PetriNetUnfolderBase]: For 56032/56032 co-relation queries the response was YES. [2024-06-21 21:02:48,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4199 conditions, 618 events. 310/618 cut-off events. For 56032/56032 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2907 event pairs, 66 based on Foata normal form. 8/624 useless extension candidates. Maximal degree in co-relation 4132. Up to 429 conditions per place. [2024-06-21 21:02:48,724 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 95 selfloop transitions, 29 changer transitions 7/133 dead transitions. [2024-06-21 21:02:48,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 133 transitions, 1385 flow [2024-06-21 21:02:48,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:48,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 21:02:48,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-21 21:02:48,725 INFO L175 Difference]: Start difference. First operand has 165 places, 109 transitions, 897 flow. Second operand 12 states and 136 transitions. [2024-06-21 21:02:48,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 133 transitions, 1385 flow [2024-06-21 21:02:48,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 133 transitions, 1334 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 21:02:48,801 INFO L231 Difference]: Finished difference. Result has 168 places, 107 transitions, 891 flow [2024-06-21 21:02:48,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=891, PETRI_PLACES=168, PETRI_TRANSITIONS=107} [2024-06-21 21:02:48,802 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-21 21:02:48,802 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 107 transitions, 891 flow [2024-06-21 21:02:48,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:48,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:48,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:48,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-21 21:02:48,802 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:48,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:48,803 INFO L85 PathProgramCache]: Analyzing trace with hash 74382524, now seen corresponding path program 42 times [2024-06-21 21:02:48,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:48,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381876750] [2024-06-21 21:02:48,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:48,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:49,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:49,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381876750] [2024-06-21 21:02:49,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381876750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:49,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:49,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:49,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023782730] [2024-06-21 21:02:49,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:49,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:49,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:49,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:49,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:49,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:49,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 107 transitions, 891 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:49,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:49,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:49,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:50,207 INFO L124 PetriNetUnfolderBase]: 304/608 cut-off events. [2024-06-21 21:02:50,207 INFO L125 PetriNetUnfolderBase]: For 58130/58130 co-relation queries the response was YES. [2024-06-21 21:02:50,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 608 events. 304/608 cut-off events. For 58130/58130 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2849 event pairs, 70 based on Foata normal form. 8/614 useless extension candidates. Maximal degree in co-relation 4126. Up to 417 conditions per place. [2024-06-21 21:02:50,211 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 93 selfloop transitions, 24 changer transitions 12/131 dead transitions. [2024-06-21 21:02:50,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 131 transitions, 1375 flow [2024-06-21 21:02:50,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:02:50,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:02:50,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-21 21:02:50,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36228287841191065 [2024-06-21 21:02:50,212 INFO L175 Difference]: Start difference. First operand has 168 places, 107 transitions, 891 flow. Second operand 13 states and 146 transitions. [2024-06-21 21:02:50,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 131 transitions, 1375 flow [2024-06-21 21:02:50,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 131 transitions, 1315 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:50,292 INFO L231 Difference]: Finished difference. Result has 168 places, 101 transitions, 846 flow [2024-06-21 21:02:50,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=846, PETRI_PLACES=168, PETRI_TRANSITIONS=101} [2024-06-21 21:02:50,293 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-06-21 21:02:50,295 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 101 transitions, 846 flow [2024-06-21 21:02:50,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:50,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:50,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:50,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-21 21:02:50,296 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:50,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:50,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1112839064, now seen corresponding path program 4 times [2024-06-21 21:02:50,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:50,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801552496] [2024-06-21 21:02:50,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:50,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:51,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:51,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801552496] [2024-06-21 21:02:51,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801552496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:51,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:51,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:51,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916450014] [2024-06-21 21:02:51,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:51,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:51,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:51,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:51,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:51,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:51,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 101 transitions, 846 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:51,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:51,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:51,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:51,732 INFO L124 PetriNetUnfolderBase]: 290/582 cut-off events. [2024-06-21 21:02:51,732 INFO L125 PetriNetUnfolderBase]: For 55590/55590 co-relation queries the response was YES. [2024-06-21 21:02:51,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 582 events. 290/582 cut-off events. For 55590/55590 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2709 event pairs, 76 based on Foata normal form. 8/588 useless extension candidates. Maximal degree in co-relation 4006. Up to 514 conditions per place. [2024-06-21 21:02:51,737 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 11 changer transitions 12/117 dead transitions. [2024-06-21 21:02:51,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 117 transitions, 1140 flow [2024-06-21 21:02:51,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:02:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:02:51,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-21 21:02:51,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-21 21:02:51,739 INFO L175 Difference]: Start difference. First operand has 168 places, 101 transitions, 846 flow. Second operand 11 states and 116 transitions. [2024-06-21 21:02:51,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 117 transitions, 1140 flow [2024-06-21 21:02:51,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 117 transitions, 1082 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-21 21:02:51,821 INFO L231 Difference]: Finished difference. Result has 160 places, 98 transitions, 794 flow [2024-06-21 21:02:51,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=794, PETRI_PLACES=160, PETRI_TRANSITIONS=98} [2024-06-21 21:02:51,822 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-21 21:02:51,822 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 98 transitions, 794 flow [2024-06-21 21:02:51,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:51,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:51,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:51,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-21 21:02:51,823 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:51,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:51,823 INFO L85 PathProgramCache]: Analyzing trace with hash -629850622, now seen corresponding path program 5 times [2024-06-21 21:02:51,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:51,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585317325] [2024-06-21 21:02:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:51,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:51,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:52,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:52,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:52,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585317325] [2024-06-21 21:02:52,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585317325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:52,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:52,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:52,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824663225] [2024-06-21 21:02:52,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:52,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:52,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:52,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:52,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:52,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:52,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 98 transitions, 794 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:52,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:52,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:52,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:53,349 INFO L124 PetriNetUnfolderBase]: 274/546 cut-off events. [2024-06-21 21:02:53,350 INFO L125 PetriNetUnfolderBase]: For 42666/42666 co-relation queries the response was YES. [2024-06-21 21:02:53,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3806 conditions, 546 events. 274/546 cut-off events. For 42666/42666 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2461 event pairs, 74 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 3742. Up to 478 conditions per place. [2024-06-21 21:02:53,353 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 88 selfloop transitions, 22 changer transitions 0/112 dead transitions. [2024-06-21 21:02:53,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 112 transitions, 1058 flow [2024-06-21 21:02:53,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:02:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:02:53,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-21 21:02:53,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-21 21:02:53,354 INFO L175 Difference]: Start difference. First operand has 160 places, 98 transitions, 794 flow. Second operand 11 states and 117 transitions. [2024-06-21 21:02:53,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 112 transitions, 1058 flow [2024-06-21 21:02:53,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 112 transitions, 1032 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-21 21:02:53,425 INFO L231 Difference]: Finished difference. Result has 157 places, 99 transitions, 832 flow [2024-06-21 21:02:53,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=832, PETRI_PLACES=157, PETRI_TRANSITIONS=99} [2024-06-21 21:02:53,426 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-21 21:02:53,426 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 99 transitions, 832 flow [2024-06-21 21:02:53,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:53,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:53,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:53,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-21 21:02:53,427 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:53,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash 79750484, now seen corresponding path program 43 times [2024-06-21 21:02:53,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:53,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58347083] [2024-06-21 21:02:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:53,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:54,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:54,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58347083] [2024-06-21 21:02:54,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58347083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:54,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:54,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:54,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439702691] [2024-06-21 21:02:54,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:54,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:54,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:54,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:54,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:54,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:54,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 99 transitions, 832 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:54,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:54,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:54,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:55,019 INFO L124 PetriNetUnfolderBase]: 261/523 cut-off events. [2024-06-21 21:02:55,020 INFO L125 PetriNetUnfolderBase]: For 38650/38650 co-relation queries the response was YES. [2024-06-21 21:02:55,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3239 conditions, 523 events. 261/523 cut-off events. For 38650/38650 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2332 event pairs, 63 based on Foata normal form. 10/531 useless extension candidates. Maximal degree in co-relation 3176. Up to 415 conditions per place. [2024-06-21 21:02:55,024 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 80 selfloop transitions, 18 changer transitions 17/117 dead transitions. [2024-06-21 21:02:55,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 117 transitions, 1142 flow [2024-06-21 21:02:55,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:55,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-21 21:02:55,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-21 21:02:55,025 INFO L175 Difference]: Start difference. First operand has 157 places, 99 transitions, 832 flow. Second operand 12 states and 131 transitions. [2024-06-21 21:02:55,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 117 transitions, 1142 flow [2024-06-21 21:02:55,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 117 transitions, 1088 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-21 21:02:55,088 INFO L231 Difference]: Finished difference. Result has 160 places, 93 transitions, 775 flow [2024-06-21 21:02:55,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=775, PETRI_PLACES=160, PETRI_TRANSITIONS=93} [2024-06-21 21:02:55,089 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-21 21:02:55,089 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 93 transitions, 775 flow [2024-06-21 21:02:55,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:55,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:55,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:55,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-21 21:02:55,090 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:55,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:55,090 INFO L85 PathProgramCache]: Analyzing trace with hash -67864696, now seen corresponding path program 44 times [2024-06-21 21:02:55,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:55,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624641823] [2024-06-21 21:02:55,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:55,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:55,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:55,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624641823] [2024-06-21 21:02:55,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624641823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:55,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:55,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:55,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059829509] [2024-06-21 21:02:55,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:55,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:55,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:55,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:55,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:56,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:56,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 93 transitions, 775 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:56,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:56,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:56,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:56,577 INFO L124 PetriNetUnfolderBase]: 261/527 cut-off events. [2024-06-21 21:02:56,578 INFO L125 PetriNetUnfolderBase]: For 44666/44666 co-relation queries the response was YES. [2024-06-21 21:02:56,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3496 conditions, 527 events. 261/527 cut-off events. For 44666/44666 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2348 event pairs, 56 based on Foata normal form. 8/533 useless extension candidates. Maximal degree in co-relation 3432. Up to 200 conditions per place. [2024-06-21 21:02:56,581 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 61 selfloop transitions, 40 changer transitions 15/118 dead transitions. [2024-06-21 21:02:56,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 118 transitions, 1205 flow [2024-06-21 21:02:56,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:56,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-21 21:02:56,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-21 21:02:56,589 INFO L175 Difference]: Start difference. First operand has 160 places, 93 transitions, 775 flow. Second operand 12 states and 145 transitions. [2024-06-21 21:02:56,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 118 transitions, 1205 flow [2024-06-21 21:02:56,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 118 transitions, 1149 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-21 21:02:56,636 INFO L231 Difference]: Finished difference. Result has 149 places, 87 transitions, 770 flow [2024-06-21 21:02:56,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=770, PETRI_PLACES=149, PETRI_TRANSITIONS=87} [2024-06-21 21:02:56,636 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-21 21:02:56,636 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 87 transitions, 770 flow [2024-06-21 21:02:56,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:56,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:56,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:56,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-21 21:02:56,637 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:56,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:56,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2131201718, now seen corresponding path program 45 times [2024-06-21 21:02:56,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:56,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489427788] [2024-06-21 21:02:56,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:56,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:57,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:57,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489427788] [2024-06-21 21:02:57,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489427788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:57,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:57,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:57,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126607863] [2024-06-21 21:02:57,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:57,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:57,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:57,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:57,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:57,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:57,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 87 transitions, 770 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:57,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:57,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:57,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:58,055 INFO L124 PetriNetUnfolderBase]: 249/503 cut-off events. [2024-06-21 21:02:58,055 INFO L125 PetriNetUnfolderBase]: For 40158/40158 co-relation queries the response was YES. [2024-06-21 21:02:58,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3374 conditions, 503 events. 249/503 cut-off events. For 40158/40158 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2234 event pairs, 66 based on Foata normal form. 10/511 useless extension candidates. Maximal degree in co-relation 3314. Up to 402 conditions per place. [2024-06-21 21:02:58,058 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 71 selfloop transitions, 20 changer transitions 14/107 dead transitions. [2024-06-21 21:02:58,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 107 transitions, 1066 flow [2024-06-21 21:02:58,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:02:58,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:02:58,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 137 transitions. [2024-06-21 21:02:58,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3399503722084367 [2024-06-21 21:02:58,059 INFO L175 Difference]: Start difference. First operand has 149 places, 87 transitions, 770 flow. Second operand 13 states and 137 transitions. [2024-06-21 21:02:58,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 107 transitions, 1066 flow [2024-06-21 21:02:58,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 107 transitions, 984 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-21 21:02:58,101 INFO L231 Difference]: Finished difference. Result has 141 places, 81 transitions, 668 flow [2024-06-21 21:02:58,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=668, PETRI_PLACES=141, PETRI_TRANSITIONS=81} [2024-06-21 21:02:58,102 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 111 predicate places. [2024-06-21 21:02:58,102 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 81 transitions, 668 flow [2024-06-21 21:02:58,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:58,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:58,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:58,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-21 21:02:58,103 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:58,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:58,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1875688690, now seen corresponding path program 46 times [2024-06-21 21:02:58,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:58,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071516966] [2024-06-21 21:02:58,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:58,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:02:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:02:59,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:02:59,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071516966] [2024-06-21 21:02:59,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071516966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:02:59,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:02:59,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:02:59,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475585331] [2024-06-21 21:02:59,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:02:59,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:02:59,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:02:59,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:02:59,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:02:59,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:02:59,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 81 transitions, 668 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:59,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:02:59,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:02:59,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:02:59,648 INFO L124 PetriNetUnfolderBase]: 205/423 cut-off events. [2024-06-21 21:02:59,648 INFO L125 PetriNetUnfolderBase]: For 23592/23592 co-relation queries the response was YES. [2024-06-21 21:02:59,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2421 conditions, 423 events. 205/423 cut-off events. For 23592/23592 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1798 event pairs, 49 based on Foata normal form. 10/431 useless extension candidates. Maximal degree in co-relation 2366. Up to 348 conditions per place. [2024-06-21 21:02:59,651 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 70 selfloop transitions, 9 changer transitions 17/98 dead transitions. [2024-06-21 21:02:59,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 98 transitions, 934 flow [2024-06-21 21:02:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:02:59,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:02:59,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-21 21:02:59,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-21 21:02:59,652 INFO L175 Difference]: Start difference. First operand has 141 places, 81 transitions, 668 flow. Second operand 12 states and 123 transitions. [2024-06-21 21:02:59,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 98 transitions, 934 flow [2024-06-21 21:02:59,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 98 transitions, 848 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-21 21:02:59,676 INFO L231 Difference]: Finished difference. Result has 135 places, 75 transitions, 557 flow [2024-06-21 21:02:59,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=557, PETRI_PLACES=135, PETRI_TRANSITIONS=75} [2024-06-21 21:02:59,676 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-21 21:02:59,676 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 75 transitions, 557 flow [2024-06-21 21:02:59,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:02:59,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:02:59,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:02:59,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-21 21:02:59,677 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:02:59,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:02:59,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2141922146, now seen corresponding path program 6 times [2024-06-21 21:02:59,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:02:59,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144508279] [2024-06-21 21:02:59,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:02:59,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:02:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:03:00,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:03:00,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:03:00,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144508279] [2024-06-21 21:03:00,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144508279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:03:00,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:03:00,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:03:00,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621905105] [2024-06-21 21:03:00,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:03:00,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:03:00,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:03:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:03:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:03:00,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:03:00,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 75 transitions, 557 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:00,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:03:00,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:03:00,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:03:00,826 INFO L124 PetriNetUnfolderBase]: 182/374 cut-off events. [2024-06-21 21:03:00,826 INFO L125 PetriNetUnfolderBase]: For 15960/15960 co-relation queries the response was YES. [2024-06-21 21:03:00,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 374 events. 182/374 cut-off events. For 15960/15960 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1502 event pairs, 43 based on Foata normal form. 2/374 useless extension candidates. Maximal degree in co-relation 2066. Up to 328 conditions per place. [2024-06-21 21:03:00,828 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 72 selfloop transitions, 15 changer transitions 0/89 dead transitions. [2024-06-21 21:03:00,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 89 transitions, 775 flow [2024-06-21 21:03:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:03:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:03:00,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-21 21:03:00,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3284457478005865 [2024-06-21 21:03:00,830 INFO L175 Difference]: Start difference. First operand has 135 places, 75 transitions, 557 flow. Second operand 11 states and 112 transitions. [2024-06-21 21:03:00,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 89 transitions, 775 flow [2024-06-21 21:03:00,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 89 transitions, 743 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-21 21:03:00,848 INFO L231 Difference]: Finished difference. Result has 124 places, 76 transitions, 577 flow [2024-06-21 21:03:00,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=577, PETRI_PLACES=124, PETRI_TRANSITIONS=76} [2024-06-21 21:03:00,848 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-21 21:03:00,848 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 76 transitions, 577 flow [2024-06-21 21:03:00,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:00,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:03:00,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:03:00,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-21 21:03:00,849 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:03:00,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:03:00,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1131964198, now seen corresponding path program 47 times [2024-06-21 21:03:00,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:03:00,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330490659] [2024-06-21 21:03:00,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:03:00,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:03:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:03:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:03:01,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:03:01,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330490659] [2024-06-21 21:03:01,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330490659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:03:01,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:03:01,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:03:01,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836234352] [2024-06-21 21:03:01,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:03:01,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:03:01,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:03:01,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:03:01,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:03:01,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:03:01,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 76 transitions, 577 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:01,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:03:01,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:03:01,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:03:02,016 INFO L124 PetriNetUnfolderBase]: 223/461 cut-off events. [2024-06-21 21:03:02,016 INFO L125 PetriNetUnfolderBase]: For 23295/23295 co-relation queries the response was YES. [2024-06-21 21:03:02,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 461 events. 223/461 cut-off events. For 23295/23295 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2017 event pairs, 60 based on Foata normal form. 8/467 useless extension candidates. Maximal degree in co-relation 2652. Up to 281 conditions per place. [2024-06-21 21:03:02,018 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 68 selfloop transitions, 23 changer transitions 7/100 dead transitions. [2024-06-21 21:03:02,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 100 transitions, 945 flow [2024-06-21 21:03:02,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:03:02,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:03:02,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-21 21:03:02,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-21 21:03:02,019 INFO L175 Difference]: Start difference. First operand has 124 places, 76 transitions, 577 flow. Second operand 12 states and 141 transitions. [2024-06-21 21:03:02,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 100 transitions, 945 flow [2024-06-21 21:03:02,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 100 transitions, 903 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-21 21:03:02,038 INFO L231 Difference]: Finished difference. Result has 127 places, 74 transitions, 571 flow [2024-06-21 21:03:02,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=571, PETRI_PLACES=127, PETRI_TRANSITIONS=74} [2024-06-21 21:03:02,038 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-21 21:03:02,039 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 74 transitions, 571 flow [2024-06-21 21:03:02,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:02,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:03:02,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:03:02,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-21 21:03:02,039 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:03:02,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:03:02,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1131969778, now seen corresponding path program 48 times [2024-06-21 21:03:02,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:03:02,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162667386] [2024-06-21 21:03:02,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:03:02,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:03:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:03:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:03:02,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:03:02,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162667386] [2024-06-21 21:03:02,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162667386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:03:02,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:03:02,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:03:02,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853649877] [2024-06-21 21:03:02,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:03:02,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:03:02,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:03:02,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:03:02,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:03:03,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:03:03,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 74 transitions, 571 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:03,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:03:03,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:03:03,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:03:03,333 INFO L124 PetriNetUnfolderBase]: 192/400 cut-off events. [2024-06-21 21:03:03,333 INFO L125 PetriNetUnfolderBase]: For 19166/19166 co-relation queries the response was YES. [2024-06-21 21:03:03,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2149 conditions, 400 events. 192/400 cut-off events. For 19166/19166 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1682 event pairs, 51 based on Foata normal form. 10/408 useless extension candidates. Maximal degree in co-relation 2100. Up to 307 conditions per place. [2024-06-21 21:03:03,335 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 62 selfloop transitions, 13 changer transitions 15/92 dead transitions. [2024-06-21 21:03:03,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 92 transitions, 819 flow [2024-06-21 21:03:03,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:03:03,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:03:03,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-21 21:03:03,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-21 21:03:03,336 INFO L175 Difference]: Start difference. First operand has 127 places, 74 transitions, 571 flow. Second operand 12 states and 130 transitions. [2024-06-21 21:03:03,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 92 transitions, 819 flow [2024-06-21 21:03:03,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 92 transitions, 771 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 21:03:03,351 INFO L231 Difference]: Finished difference. Result has 126 places, 69 transitions, 514 flow [2024-06-21 21:03:03,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=514, PETRI_PLACES=126, PETRI_TRANSITIONS=69} [2024-06-21 21:03:03,351 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 96 predicate places. [2024-06-21 21:03:03,351 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 69 transitions, 514 flow [2024-06-21 21:03:03,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:03,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:03:03,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:03:03,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-21 21:03:03,352 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:03:03,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:03:03,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1139598134, now seen corresponding path program 7 times [2024-06-21 21:03:03,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:03:03,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507557989] [2024-06-21 21:03:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:03:03,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:03:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:03:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:03:04,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:03:04,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507557989] [2024-06-21 21:03:04,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507557989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:03:04,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:03:04,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:03:04,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227231029] [2024-06-21 21:03:04,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:03:04,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:03:04,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:03:04,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:03:04,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:03:04,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:03:04,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 69 transitions, 514 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:04,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:03:04,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:03:04,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:03:04,735 INFO L124 PetriNetUnfolderBase]: 171/361 cut-off events. [2024-06-21 21:03:04,735 INFO L125 PetriNetUnfolderBase]: For 15220/15220 co-relation queries the response was YES. [2024-06-21 21:03:04,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1862 conditions, 361 events. 171/361 cut-off events. For 15220/15220 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1477 event pairs, 44 based on Foata normal form. 8/367 useless extension candidates. Maximal degree in co-relation 1814. Up to 267 conditions per place. [2024-06-21 21:03:04,737 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 56 selfloop transitions, 14 changer transitions 13/85 dead transitions. [2024-06-21 21:03:04,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 85 transitions, 726 flow [2024-06-21 21:03:04,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:03:04,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:03:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-21 21:03:04,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-21 21:03:04,740 INFO L175 Difference]: Start difference. First operand has 126 places, 69 transitions, 514 flow. Second operand 11 states and 122 transitions. [2024-06-21 21:03:04,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 85 transitions, 726 flow [2024-06-21 21:03:04,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 85 transitions, 684 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-21 21:03:04,755 INFO L231 Difference]: Finished difference. Result has 118 places, 64 transitions, 466 flow [2024-06-21 21:03:04,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=466, PETRI_PLACES=118, PETRI_TRANSITIONS=64} [2024-06-21 21:03:04,755 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-21 21:03:04,755 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 64 transitions, 466 flow [2024-06-21 21:03:04,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:04,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:03:04,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:03:04,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-21 21:03:04,756 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:03:04,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:03:04,756 INFO L85 PathProgramCache]: Analyzing trace with hash 938024788, now seen corresponding path program 49 times [2024-06-21 21:03:04,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:03:04,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063647266] [2024-06-21 21:03:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:03:04,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:03:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:03:05,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:03:05,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:03:05,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063647266] [2024-06-21 21:03:05,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063647266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:03:05,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:03:05,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:03:05,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992413946] [2024-06-21 21:03:05,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:03:05,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:03:05,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:03:05,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:03:05,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:03:05,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:03:05,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 64 transitions, 466 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:05,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:03:05,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:03:05,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:03:05,958 INFO L124 PetriNetUnfolderBase]: 197/411 cut-off events. [2024-06-21 21:03:05,958 INFO L125 PetriNetUnfolderBase]: For 18511/18511 co-relation queries the response was YES. [2024-06-21 21:03:05,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2269 conditions, 411 events. 197/411 cut-off events. For 18511/18511 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1751 event pairs, 57 based on Foata normal form. 8/417 useless extension candidates. Maximal degree in co-relation 2224. Up to 243 conditions per place. [2024-06-21 21:03:05,961 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 60 selfloop transitions, 20 changer transitions 7/89 dead transitions. [2024-06-21 21:03:05,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 89 transitions, 808 flow [2024-06-21 21:03:05,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:03:05,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:03:05,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 21:03:05,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-21 21:03:05,962 INFO L175 Difference]: Start difference. First operand has 118 places, 64 transitions, 466 flow. Second operand 12 states and 136 transitions. [2024-06-21 21:03:05,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 89 transitions, 808 flow [2024-06-21 21:03:05,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 89 transitions, 745 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-21 21:03:05,979 INFO L231 Difference]: Finished difference. Result has 113 places, 64 transitions, 461 flow [2024-06-21 21:03:05,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=461, PETRI_PLACES=113, PETRI_TRANSITIONS=64} [2024-06-21 21:03:05,979 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-21 21:03:05,980 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 64 transitions, 461 flow [2024-06-21 21:03:05,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:05,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:03:05,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:03:05,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-21 21:03:05,980 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:03:05,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:03:05,981 INFO L85 PathProgramCache]: Analyzing trace with hash 932667988, now seen corresponding path program 50 times [2024-06-21 21:03:05,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:03:05,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813423073] [2024-06-21 21:03:05,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:03:05,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:03:05,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:03:06,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:03:06,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:03:06,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813423073] [2024-06-21 21:03:06,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813423073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:03:06,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:03:06,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:03:06,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564496381] [2024-06-21 21:03:06,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:03:06,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:03:06,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:03:06,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:03:06,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:03:06,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:03:06,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 64 transitions, 461 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:06,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:03:06,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:03:06,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:03:07,273 INFO L124 PetriNetUnfolderBase]: 188/396 cut-off events. [2024-06-21 21:03:07,273 INFO L125 PetriNetUnfolderBase]: For 16329/16329 co-relation queries the response was YES. [2024-06-21 21:03:07,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2083 conditions, 396 events. 188/396 cut-off events. For 16329/16329 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1685 event pairs, 64 based on Foata normal form. 10/404 useless extension candidates. Maximal degree in co-relation 2040. Up to 277 conditions per place. [2024-06-21 21:03:07,276 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 48 selfloop transitions, 22 changer transitions 11/83 dead transitions. [2024-06-21 21:03:07,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 83 transitions, 689 flow [2024-06-21 21:03:07,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:03:07,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:03:07,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-21 21:03:07,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-21 21:03:07,277 INFO L175 Difference]: Start difference. First operand has 113 places, 64 transitions, 461 flow. Second operand 12 states and 135 transitions. [2024-06-21 21:03:07,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 83 transitions, 689 flow [2024-06-21 21:03:07,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 83 transitions, 650 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 21:03:07,289 INFO L231 Difference]: Finished difference. Result has 113 places, 61 transitions, 446 flow [2024-06-21 21:03:07,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=446, PETRI_PLACES=113, PETRI_TRANSITIONS=61} [2024-06-21 21:03:07,290 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-21 21:03:07,290 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 61 transitions, 446 flow [2024-06-21 21:03:07,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:07,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:03:07,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:03:07,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-21 21:03:07,290 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:03:07,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:03:07,291 INFO L85 PathProgramCache]: Analyzing trace with hash -227435458, now seen corresponding path program 51 times [2024-06-21 21:03:07,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:03:07,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383561137] [2024-06-21 21:03:07,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:03:07,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:03:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:03:08,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:03:08,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:03:08,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383561137] [2024-06-21 21:03:08,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383561137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:03:08,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:03:08,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:03:08,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961861421] [2024-06-21 21:03:08,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:03:08,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:03:08,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:03:08,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:03:08,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:03:08,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:03:08,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 61 transitions, 446 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:08,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:03:08,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:03:08,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:03:08,734 INFO L124 PetriNetUnfolderBase]: 176/376 cut-off events. [2024-06-21 21:03:08,734 INFO L125 PetriNetUnfolderBase]: For 14388/14388 co-relation queries the response was YES. [2024-06-21 21:03:08,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 376 events. 176/376 cut-off events. For 14388/14388 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1582 event pairs, 60 based on Foata normal form. 8/382 useless extension candidates. Maximal degree in co-relation 1944. Up to 267 conditions per place. [2024-06-21 21:03:08,736 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 46 selfloop transitions, 21 changer transitions 11/80 dead transitions. [2024-06-21 21:03:08,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 80 transitions, 660 flow [2024-06-21 21:03:08,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:03:08,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:03:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 140 transitions. [2024-06-21 21:03:08,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34739454094292804 [2024-06-21 21:03:08,737 INFO L175 Difference]: Start difference. First operand has 113 places, 61 transitions, 446 flow. Second operand 13 states and 140 transitions. [2024-06-21 21:03:08,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 80 transitions, 660 flow [2024-06-21 21:03:08,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 80 transitions, 608 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-21 21:03:08,748 INFO L231 Difference]: Finished difference. Result has 112 places, 58 transitions, 422 flow [2024-06-21 21:03:08,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=422, PETRI_PLACES=112, PETRI_TRANSITIONS=58} [2024-06-21 21:03:08,749 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-21 21:03:08,749 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 58 transitions, 422 flow [2024-06-21 21:03:08,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:08,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:03:08,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:03:08,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-21 21:03:08,750 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:03:08,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:03:08,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1054009988, now seen corresponding path program 52 times [2024-06-21 21:03:08,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:03:08,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101559317] [2024-06-21 21:03:08,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:03:08,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:03:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:03:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:03:09,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:03:09,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101559317] [2024-06-21 21:03:09,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101559317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:03:09,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:03:09,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:03:09,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126778485] [2024-06-21 21:03:09,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:03:09,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:03:09,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:03:09,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:03:09,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:03:09,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:03:09,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 58 transitions, 422 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:09,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:03:09,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:03:09,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:03:10,057 INFO L124 PetriNetUnfolderBase]: 144/312 cut-off events. [2024-06-21 21:03:10,057 INFO L125 PetriNetUnfolderBase]: For 10812/10812 co-relation queries the response was YES. [2024-06-21 21:03:10,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 312 events. 144/312 cut-off events. For 10812/10812 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1205 event pairs, 47 based on Foata normal form. 10/320 useless extension candidates. Maximal degree in co-relation 1442. Up to 231 conditions per place. [2024-06-21 21:03:10,058 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 48 selfloop transitions, 10 changer transitions 15/75 dead transitions. [2024-06-21 21:03:10,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 75 transitions, 626 flow [2024-06-21 21:03:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:03:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:03:10,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-21 21:03:10,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-21 21:03:10,059 INFO L175 Difference]: Start difference. First operand has 112 places, 58 transitions, 422 flow. Second operand 12 states and 125 transitions. [2024-06-21 21:03:10,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 75 transitions, 626 flow [2024-06-21 21:03:10,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 75 transitions, 576 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 21:03:10,068 INFO L231 Difference]: Finished difference. Result has 107 places, 53 transitions, 362 flow [2024-06-21 21:03:10,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=362, PETRI_PLACES=107, PETRI_TRANSITIONS=53} [2024-06-21 21:03:10,069 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 77 predicate places. [2024-06-21 21:03:10,069 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 53 transitions, 362 flow [2024-06-21 21:03:10,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:10,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:03:10,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:03:10,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-21 21:03:10,069 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:03:10,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:03:10,070 INFO L85 PathProgramCache]: Analyzing trace with hash 932518258, now seen corresponding path program 53 times [2024-06-21 21:03:10,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:03:10,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744853224] [2024-06-21 21:03:10,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:03:10,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:03:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:03:10,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:03:10,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:03:10,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744853224] [2024-06-21 21:03:10,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744853224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:03:10,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:03:10,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:03:10,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50109533] [2024-06-21 21:03:10,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:03:10,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:03:10,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:03:10,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:03:10,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:03:11,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:03:11,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 53 transitions, 362 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:11,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:03:11,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:03:11,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:03:11,269 INFO L124 PetriNetUnfolderBase]: 108/240 cut-off events. [2024-06-21 21:03:11,269 INFO L125 PetriNetUnfolderBase]: For 5532/5532 co-relation queries the response was YES. [2024-06-21 21:03:11,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 240 events. 108/240 cut-off events. For 5532/5532 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 833 event pairs, 23 based on Foata normal form. 8/246 useless extension candidates. Maximal degree in co-relation 924. Up to 164 conditions per place. [2024-06-21 21:03:11,270 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 41 selfloop transitions, 6 changer transitions 20/69 dead transitions. [2024-06-21 21:03:11,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 69 transitions, 532 flow [2024-06-21 21:03:11,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:03:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:03:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-21 21:03:11,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-21 21:03:11,271 INFO L175 Difference]: Start difference. First operand has 107 places, 53 transitions, 362 flow. Second operand 12 states and 123 transitions. [2024-06-21 21:03:11,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 69 transitions, 532 flow [2024-06-21 21:03:11,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 69 transitions, 502 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 21:03:11,277 INFO L231 Difference]: Finished difference. Result has 101 places, 45 transitions, 292 flow [2024-06-21 21:03:11,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=292, PETRI_PLACES=101, PETRI_TRANSITIONS=45} [2024-06-21 21:03:11,277 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-21 21:03:11,277 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 45 transitions, 292 flow [2024-06-21 21:03:11,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 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) [2024-06-21 21:03:11,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:03:11,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:03:11,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-21 21:03:11,278 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:03:11,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:03:11,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1975606367, now seen corresponding path program 1 times [2024-06-21 21:03:11,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:03:11,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033632204] [2024-06-21 21:03:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:03:11,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:03:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:03:12,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:03:12,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:03:12,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033632204] [2024-06-21 21:03:12,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033632204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:03:12,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:03:12,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 21:03:12,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768521858] [2024-06-21 21:03:12,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:03:12,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 21:03:12,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:03:12,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 21:03:12,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-21 21:03:12,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:03:12,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 45 transitions, 292 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 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) [2024-06-21 21:03:12,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:03:12,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:03:12,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:03:12,815 INFO L124 PetriNetUnfolderBase]: 90/202 cut-off events. [2024-06-21 21:03:12,815 INFO L125 PetriNetUnfolderBase]: For 4177/4177 co-relation queries the response was YES. [2024-06-21 21:03:12,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 809 conditions, 202 events. 90/202 cut-off events. For 4177/4177 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 642 event pairs, 24 based on Foata normal form. 6/206 useless extension candidates. Maximal degree in co-relation 772. Up to 118 conditions per place. [2024-06-21 21:03:12,816 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 30 selfloop transitions, 3 changer transitions 27/62 dead transitions. [2024-06-21 21:03:12,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 62 transitions, 456 flow [2024-06-21 21:03:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:03:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:03:12,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-21 21:03:12,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-21 21:03:12,816 INFO L175 Difference]: Start difference. First operand has 101 places, 45 transitions, 292 flow. Second operand 12 states and 119 transitions. [2024-06-21 21:03:12,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 62 transitions, 456 flow [2024-06-21 21:03:12,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 62 transitions, 409 flow, removed 11 selfloop flow, removed 14 redundant places. [2024-06-21 21:03:12,819 INFO L231 Difference]: Finished difference. Result has 85 places, 34 transitions, 200 flow [2024-06-21 21:03:12,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=200, PETRI_PLACES=85, PETRI_TRANSITIONS=34} [2024-06-21 21:03:12,820 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-21 21:03:12,820 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 34 transitions, 200 flow [2024-06-21 21:03:12,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 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) [2024-06-21 21:03:12,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:03:12,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:03:12,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-21 21:03:12,821 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:03:12,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:03:12,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1849140905, now seen corresponding path program 2 times [2024-06-21 21:03:12,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:03:12,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189364791] [2024-06-21 21:03:12,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:03:12,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:03:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:03:13,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:03:13,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:03:13,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189364791] [2024-06-21 21:03:13,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189364791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:03:13,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:03:13,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 21:03:13,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414048163] [2024-06-21 21:03:13,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:03:13,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 21:03:13,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:03:13,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 21:03:13,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-21 21:03:14,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:03:14,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 34 transitions, 200 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 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) [2024-06-21 21:03:14,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:03:14,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:03:14,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:03:14,297 INFO L124 PetriNetUnfolderBase]: 74/163 cut-off events. [2024-06-21 21:03:14,297 INFO L125 PetriNetUnfolderBase]: For 2422/2422 co-relation queries the response was YES. [2024-06-21 21:03:14,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 163 events. 74/163 cut-off events. For 2422/2422 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 487 event pairs, 19 based on Foata normal form. 6/168 useless extension candidates. Maximal degree in co-relation 568. Up to 99 conditions per place. [2024-06-21 21:03:14,298 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 27 selfloop transitions, 9 changer transitions 11/49 dead transitions. [2024-06-21 21:03:14,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 49 transitions, 329 flow [2024-06-21 21:03:14,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:03:14,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:03:14,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-21 21:03:14,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-21 21:03:14,299 INFO L175 Difference]: Start difference. First operand has 85 places, 34 transitions, 200 flow. Second operand 12 states and 113 transitions. [2024-06-21 21:03:14,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 49 transitions, 329 flow [2024-06-21 21:03:14,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 49 transitions, 305 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-21 21:03:14,300 INFO L231 Difference]: Finished difference. Result has 69 places, 32 transitions, 182 flow [2024-06-21 21:03:14,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=182, PETRI_PLACES=69, PETRI_TRANSITIONS=32} [2024-06-21 21:03:14,301 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-21 21:03:14,301 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 32 transitions, 182 flow [2024-06-21 21:03:14,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 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) [2024-06-21 21:03:14,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:03:14,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:03:14,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-21 21:03:14,302 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:03:14,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:03:14,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1651322359, now seen corresponding path program 3 times [2024-06-21 21:03:14,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:03:14,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447916195] [2024-06-21 21:03:14,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:03:14,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:03:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:03:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:03:15,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:03:15,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447916195] [2024-06-21 21:03:15,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447916195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:03:15,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:03:15,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 21:03:15,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593339426] [2024-06-21 21:03:15,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:03:15,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 21:03:15,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:03:15,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 21:03:15,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-21 21:03:15,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:03:15,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 32 transitions, 182 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 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) [2024-06-21 21:03:15,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:03:15,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:03:15,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:03:16,233 INFO L124 PetriNetUnfolderBase]: 79/178 cut-off events. [2024-06-21 21:03:16,233 INFO L125 PetriNetUnfolderBase]: For 1782/1782 co-relation queries the response was YES. [2024-06-21 21:03:16,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 178 events. 79/178 cut-off events. For 1782/1782 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 557 event pairs, 30 based on Foata normal form. 6/183 useless extension candidates. Maximal degree in co-relation 640. Up to 60 conditions per place. [2024-06-21 21:03:16,234 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 25 selfloop transitions, 10 changer transitions 12/49 dead transitions. [2024-06-21 21:03:16,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 49 transitions, 342 flow [2024-06-21 21:03:16,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:03:16,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:03:16,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 123 transitions. [2024-06-21 21:03:16,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3052109181141439 [2024-06-21 21:03:16,236 INFO L175 Difference]: Start difference. First operand has 69 places, 32 transitions, 182 flow. Second operand 13 states and 123 transitions. [2024-06-21 21:03:16,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 49 transitions, 342 flow [2024-06-21 21:03:16,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 49 transitions, 313 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 21:03:16,239 INFO L231 Difference]: Finished difference. Result has 67 places, 26 transitions, 140 flow [2024-06-21 21:03:16,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=140, PETRI_PLACES=67, PETRI_TRANSITIONS=26} [2024-06-21 21:03:16,239 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-21 21:03:16,239 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 26 transitions, 140 flow [2024-06-21 21:03:16,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 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) [2024-06-21 21:03:16,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:03:16,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:03:16,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-21 21:03:16,240 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:03:16,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:03:16,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2058612113, now seen corresponding path program 4 times [2024-06-21 21:03:16,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:03:16,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86538734] [2024-06-21 21:03:16,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:03:16,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:03:16,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:03:17,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:03:17,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:03:17,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86538734] [2024-06-21 21:03:17,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86538734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:03:17,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:03:17,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-21 21:03:17,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087483248] [2024-06-21 21:03:17,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:03:17,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-21 21:03:17,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:03:17,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-21 21:03:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-21 21:03:17,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:03:17,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 26 transitions, 140 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 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) [2024-06-21 21:03:17,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:03:17,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:03:17,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:03:18,221 INFO L124 PetriNetUnfolderBase]: 50/119 cut-off events. [2024-06-21 21:03:18,221 INFO L125 PetriNetUnfolderBase]: For 1194/1194 co-relation queries the response was YES. [2024-06-21 21:03:18,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 119 events. 50/119 cut-off events. For 1194/1194 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 294 event pairs, 13 based on Foata normal form. 6/124 useless extension candidates. Maximal degree in co-relation 393. Up to 50 conditions per place. [2024-06-21 21:03:18,222 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 18 selfloop transitions, 7 changer transitions 14/41 dead transitions. [2024-06-21 21:03:18,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 41 transitions, 250 flow [2024-06-21 21:03:18,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:03:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:03:18,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-21 21:03:18,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-21 21:03:18,223 INFO L175 Difference]: Start difference. First operand has 67 places, 26 transitions, 140 flow. Second operand 12 states and 112 transitions. [2024-06-21 21:03:18,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 41 transitions, 250 flow [2024-06-21 21:03:18,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 41 transitions, 216 flow, removed 4 selfloop flow, removed 16 redundant places. [2024-06-21 21:03:18,224 INFO L231 Difference]: Finished difference. Result has 58 places, 22 transitions, 105 flow [2024-06-21 21:03:18,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=105, PETRI_PLACES=58, PETRI_TRANSITIONS=22} [2024-06-21 21:03:18,225 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-06-21 21:03:18,225 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 22 transitions, 105 flow [2024-06-21 21:03:18,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 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) [2024-06-21 21:03:18,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:03:18,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:03:18,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-21 21:03:18,225 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:03:18,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:03:18,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1928090359, now seen corresponding path program 5 times [2024-06-21 21:03:18,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:03:18,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665950969] [2024-06-21 21:03:18,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:03:18,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:03:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:03:19,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:03:19,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:03:19,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665950969] [2024-06-21 21:03:19,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665950969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:03:19,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:03:19,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:03:19,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567669282] [2024-06-21 21:03:19,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:03:19,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:03:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:03:19,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:03:19,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:03:19,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-21 21:03:19,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 22 transitions, 105 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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) [2024-06-21 21:03:19,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:03:19,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-21 21:03:19,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:03:19,794 INFO L124 PetriNetUnfolderBase]: 21/60 cut-off events. [2024-06-21 21:03:19,794 INFO L125 PetriNetUnfolderBase]: For 432/432 co-relation queries the response was YES. [2024-06-21 21:03:19,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 60 events. 21/60 cut-off events. For 432/432 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 6/65 useless extension candidates. Maximal degree in co-relation 158. Up to 24 conditions per place. [2024-06-21 21:03:19,795 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-21 21:03:19,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 30 transitions, 153 flow [2024-06-21 21:03:19,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:03:19,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:03:19,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 101 transitions. [2024-06-21 21:03:19,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.271505376344086 [2024-06-21 21:03:19,796 INFO L175 Difference]: Start difference. First operand has 58 places, 22 transitions, 105 flow. Second operand 12 states and 101 transitions. [2024-06-21 21:03:19,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 30 transitions, 153 flow [2024-06-21 21:03:19,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 30 transitions, 123 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-21 21:03:19,796 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-06-21 21:03:19,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-06-21 21:03:19,797 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-21 21:03:19,797 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-06-21 21:03:19,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 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) [2024-06-21 21:03:19,799 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 21:03:19,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 21:03:19,800 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 21:03:19,803 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 21:03:19,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-21 21:03:19,803 INFO L445 BasicCegarLoop]: Path program histogram: [53, 36, 15, 14, 12, 10, 7, 7, 6, 6, 6, 5, 5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:03:19,808 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 21:03:19,808 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 21:03:19,812 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 21:03:19,812 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 21:03:19,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 09:03:19 BasicIcfg [2024-06-21 21:03:19,813 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 21:03:19,813 INFO L158 Benchmark]: Toolchain (without parser) took 309207.80ms. Allocated memory was 138.4MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 107.4MB in the beginning and 606.5MB in the end (delta: -499.1MB). Peak memory consumption was 533.4MB. Max. memory is 16.1GB. [2024-06-21 21:03:19,814 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 92.3MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 21:03:19,815 INFO L158 Benchmark]: CDTParser took 4.39ms. Allocated memory is still 92.3MB. Free memory is still 34.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 21:03:19,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 557.50ms. Allocated memory is still 138.4MB. Free memory was 106.7MB in the beginning and 84.9MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-21 21:03:19,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.58ms. Allocated memory is still 138.4MB. Free memory was 84.9MB in the beginning and 82.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 21:03:19,816 INFO L158 Benchmark]: Boogie Preprocessor took 38.26ms. Allocated memory is still 138.4MB. Free memory was 82.5MB in the beginning and 79.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 21:03:19,816 INFO L158 Benchmark]: RCFGBuilder took 623.17ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 79.2MB in the beginning and 118.5MB in the end (delta: -39.3MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. [2024-06-21 21:03:19,816 INFO L158 Benchmark]: TraceAbstraction took 307925.78ms. Allocated memory was 176.2MB in the beginning and 1.2GB in the end (delta: 996.1MB). Free memory was 117.5MB in the beginning and 606.5MB in the end (delta: -489.0MB). Peak memory consumption was 506.1MB. Max. memory is 16.1GB. [2024-06-21 21:03:19,817 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 92.3MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 4.39ms. Allocated memory is still 92.3MB. Free memory is still 34.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 557.50ms. Allocated memory is still 138.4MB. Free memory was 106.7MB in the beginning and 84.9MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.58ms. Allocated memory is still 138.4MB. Free memory was 84.9MB in the beginning and 82.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.26ms. Allocated memory is still 138.4MB. Free memory was 82.5MB in the beginning and 79.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 623.17ms. Allocated memory was 138.4MB in the beginning and 176.2MB in the end (delta: 37.7MB). Free memory was 79.2MB in the beginning and 118.5MB in the end (delta: -39.3MB). Peak memory consumption was 37.4MB. Max. memory is 16.1GB. * TraceAbstraction took 307925.78ms. Allocated memory was 176.2MB in the beginning and 1.2GB in the end (delta: 996.1MB). Free memory was 117.5MB in the beginning and 606.5MB in the end (delta: -489.0MB). Peak memory consumption was 506.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 820]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 821]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 307.8s, OverallIterations: 204, TraceHistogramMax: 1, PathProgramHistogramMax: 53, EmptinessCheckTime: 0.0s, AutomataDifference: 145.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15034 SdHoareTripleChecker+Valid, 50.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12765 mSDsluCounter, 10702 SdHoareTripleChecker+Invalid, 43.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9501 mSDsCounter, 3394 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 88195 IncrementalHoareTripleChecker+Invalid, 91589 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3394 mSolverCounterUnsat, 1201 mSDtfsCounter, 88195 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2483 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2482 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5999 ImplicationChecksByTransitivity, 68.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3374occurred in iteration=124, InterpolantAutomatonStates: 2180, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 160.1s InterpolantComputationTime, 3326 NumberOfCodeBlocks, 3326 NumberOfCodeBlocksAsserted, 204 NumberOfCheckSat, 3122 ConstructedInterpolants, 0 QuantifiedInterpolants, 148042 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 204 InterpolantComputations, 204 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-21 21:03:19,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE