./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.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-cde23df-m [2024-06-14 12:40:26,399 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:40:26,443 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:40:26,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:40:26,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:40:26,468 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:40:26,469 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:40:26,469 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:40:26,470 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:40:26,472 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:40:26,472 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:40:26,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:40:26,473 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:40:26,477 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:40:26,477 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:40:26,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:40:26,478 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:40:26,479 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:40:26,479 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:40:26,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:40:26,480 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:40:26,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:40:26,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:40:26,481 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:40:26,481 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:40:26,482 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:40:26,482 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:40:26,482 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:40:26,483 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:40:26,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:40:26,484 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:40:26,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:40:26,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:40:26,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:40:26,485 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:40:26,485 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:40:26,485 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:40:26,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:40:26,485 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:40:26,486 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:40:26,486 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:40:26,486 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:40:26,486 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:40:26,486 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:40:26,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:40:26,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:40:26,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:40:26,713 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:40:26,714 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:40:26,715 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-14 12:40:26,847 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:40:26,847 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:40:26,847 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 12:40:27,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:40:28,114 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:40:28,120 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 12:40:28,135 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b8505cd/2ea7ba4bba0e484eab6edf3cd467c7e8/FLAG41a00305f [2024-06-14 12:40:28,152 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71b8505cd/2ea7ba4bba0e484eab6edf3cd467c7e8 [2024-06-14 12:40:28,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:40:28,155 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:40:28,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:40:28,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:40:28,162 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:40:28,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:40:26" (1/2) ... [2024-06-14 12:40:28,163 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e35c1c3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:40:28, skipping insertion in model container [2024-06-14 12:40:28,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:40:26" (1/2) ... [2024-06-14 12:40:28,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1697ecc5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:40:28, skipping insertion in model container [2024-06-14 12:40:28,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:40:28" (2/2) ... [2024-06-14 12:40:28,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e35c1c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28, skipping insertion in model container [2024-06-14 12:40:28,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:40:28" (2/2) ... [2024-06-14 12:40:28,166 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:40:28,220 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:40:28,220 INFO L97 edCorrectnessWitness]: Location invariant before [L816-L816] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) [2024-06-14 12:40:28,221 INFO L97 edCorrectnessWitness]: Location invariant before [L817-L817] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 2) && __unbuffered_p1_EBX <= 127) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 2) && __unbuffered_p1_EAX <= 127) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) [2024-06-14 12:40:28,221 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:40:28,221 INFO L106 edCorrectnessWitness]: ghost_update [L814-L814] multithreaded = 1; [2024-06-14 12:40:28,258 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:40:28,514 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:40:28,527 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:40:28,648 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:40:28,675 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:40:28,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28 WrapperNode [2024-06-14 12:40:28,676 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:40:28,677 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:40:28,677 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:40:28,677 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:40:28,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28" (1/1) ... [2024-06-14 12:40:28,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28" (1/1) ... [2024-06-14 12:40:28,729 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 120 [2024-06-14 12:40:28,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:40:28,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:40:28,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:40:28,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:40:28,748 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28" (1/1) ... [2024-06-14 12:40:28,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28" (1/1) ... [2024-06-14 12:40:28,763 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28" (1/1) ... [2024-06-14 12:40:28,777 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]. [2024-06-14 12:40:28,779 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28" (1/1) ... [2024-06-14 12:40:28,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28" (1/1) ... [2024-06-14 12:40:28,788 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28" (1/1) ... [2024-06-14 12:40:28,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28" (1/1) ... [2024-06-14 12:40:28,798 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28" (1/1) ... [2024-06-14 12:40:28,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28" (1/1) ... [2024-06-14 12:40:28,805 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:40:28,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:40:28,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:40:28,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:40:28,807 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28" (1/1) ... [2024-06-14 12:40:28,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:40:28,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:40:28,830 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) [2024-06-14 12:40:28,846 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 [2024-06-14 12:40:28,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:40:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:40:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:40:28,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:40:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:40:28,857 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:40:28,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:40:28,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:40:28,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:40:28,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:40:28,859 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 12:40:28,961 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:40:28,963 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:40:29,281 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:40:29,281 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:40:29,441 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:40:29,441 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:40:29,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:40:29 BoogieIcfgContainer [2024-06-14 12:40:29,445 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:40:29,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:40:29,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:40:29,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:40:29,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:40:26" (1/4) ... [2024-06-14 12:40:29,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fb3b72 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:40:29, skipping insertion in model container [2024-06-14 12:40:29,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:40:28" (2/4) ... [2024-06-14 12:40:29,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fb3b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:40:29, skipping insertion in model container [2024-06-14 12:40:29,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:40:28" (3/4) ... [2024-06-14 12:40:29,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fb3b72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:40:29, skipping insertion in model container [2024-06-14 12:40:29,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:40:29" (4/4) ... [2024-06-14 12:40:29,456 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi003_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-14 12:40:29,468 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:40:29,469 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:40:29,469 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:40:29,507 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:40:29,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-14 12:40:29,581 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-14 12:40:29,581 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:40:29,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:40:29,583 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-14 12:40:29,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-14 12:40:29,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:40:29,602 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;@26e1fe07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:40:29,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:40:29,606 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:40:29,606 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:40:29,607 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:40:29,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:29,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:40:29,608 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)] === [2024-06-14 12:40:29,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:29,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1491043083, now seen corresponding path program 1 times [2024-06-14 12:40:29,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:29,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817503880] [2024-06-14 12:40:29,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:29,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:30,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:30,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817503880] [2024-06-14 12:40:30,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817503880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:30,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:30,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:40:30,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192663733] [2024-06-14 12:40:30,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:30,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:40:30,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:30,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:40:30,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:40:30,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-06-14 12:40:30,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:30,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:30,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-06-14 12:40:30,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:30,520 INFO L124 PetriNetUnfolderBase]: 131/270 cut-off events. [2024-06-14 12:40:30,520 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 12:40:30,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 270 events. 131/270 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1073 event pairs, 75 based on Foata normal form. 1/258 useless extension candidates. Maximal degree in co-relation 514. Up to 235 conditions per place. [2024-06-14 12:40:30,525 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 22 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-14 12:40:30,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 121 flow [2024-06-14 12:40:30,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:40:30,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:40:30,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-06-14 12:40:30,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-06-14 12:40:30,536 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 60 transitions. [2024-06-14 12:40:30,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 121 flow [2024-06-14 12:40:30,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:40:30,539 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-14 12:40:30,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-14 12:40:30,544 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-14 12:40:30,545 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-14 12:40:30,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:30,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:30,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:30,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:40:30,546 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)] === [2024-06-14 12:40:30,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:30,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1626464162, now seen corresponding path program 1 times [2024-06-14 12:40:30,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:30,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803073026] [2024-06-14 12:40:30,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:30,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:31,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:31,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:31,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803073026] [2024-06-14 12:40:31,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803073026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:31,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:31,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:40:31,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066939080] [2024-06-14 12:40:31,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:31,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:40:31,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:31,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:40:31,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:40:31,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:40:31,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:31,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:31,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:40:31,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:31,303 INFO L124 PetriNetUnfolderBase]: 169/318 cut-off events. [2024-06-14 12:40:31,303 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-14 12:40:31,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 318 events. 169/318 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1191 event pairs, 70 based on Foata normal form. 4/321 useless extension candidates. Maximal degree in co-relation 710. Up to 281 conditions per place. [2024-06-14 12:40:31,305 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 29 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-06-14 12:40:31,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 171 flow [2024-06-14 12:40:31,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:40:31,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:40:31,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-06-14 12:40:31,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-14 12:40:31,307 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 72 transitions. [2024-06-14 12:40:31,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 171 flow [2024-06-14 12:40:31,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:40:31,309 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-14 12:40:31,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-14 12:40:31,309 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-14 12:40:31,309 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-14 12:40:31,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:31,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:31,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:31,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:40:31,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:40:31,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:31,311 INFO L85 PathProgramCache]: Analyzing trace with hash 210177326, now seen corresponding path program 1 times [2024-06-14 12:40:31,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:31,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135587809] [2024-06-14 12:40:31,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:31,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:31,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:31,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135587809] [2024-06-14 12:40:31,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135587809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:31,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:31,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:40:31,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894232185] [2024-06-14 12:40:31,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:31,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:40:31,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:31,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:40:31,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:40:31,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-14 12:40:31,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:31,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:31,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-14 12:40:31,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:32,023 INFO L124 PetriNetUnfolderBase]: 123/253 cut-off events. [2024-06-14 12:40:32,024 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-06-14 12:40:32,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 253 events. 123/253 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 965 event pairs, 62 based on Foata normal form. 1/248 useless extension candidates. Maximal degree in co-relation 617. Up to 219 conditions per place. [2024-06-14 12:40:32,026 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 24 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-14 12:40:32,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 177 flow [2024-06-14 12:40:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:40:32,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:40:32,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2024-06-14 12:40:32,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2024-06-14 12:40:32,028 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 79 transitions. [2024-06-14 12:40:32,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 177 flow [2024-06-14 12:40:32,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 168 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 12:40:32,029 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 117 flow [2024-06-14 12:40:32,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-14 12:40:32,030 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-14 12:40:32,030 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 117 flow [2024-06-14 12:40:32,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:32,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:32,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:32,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:40:32,031 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)] === [2024-06-14 12:40:32,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash 8700904, now seen corresponding path program 1 times [2024-06-14 12:40:32,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:32,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962717617] [2024-06-14 12:40:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:32,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:32,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:32,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962717617] [2024-06-14 12:40:32,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962717617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:32,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:32,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:40:32,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361033084] [2024-06-14 12:40:32,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:32,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:40:32,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:32,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:40:32,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:40:32,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:40:32,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:32,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:32,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:40:32,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:33,113 INFO L124 PetriNetUnfolderBase]: 163/307 cut-off events. [2024-06-14 12:40:33,113 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2024-06-14 12:40:33,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 840 conditions, 307 events. 163/307 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1162 event pairs, 29 based on Foata normal form. 4/310 useless extension candidates. Maximal degree in co-relation 821. Up to 252 conditions per place. [2024-06-14 12:40:33,115 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 34 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-14 12:40:33,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 235 flow [2024-06-14 12:40:33,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:40:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:40:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-14 12:40:33,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-06-14 12:40:33,117 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 117 flow. Second operand 6 states and 96 transitions. [2024-06-14 12:40:33,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 235 flow [2024-06-14 12:40:33,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 224 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:40:33,118 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 131 flow [2024-06-14 12:40:33,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=131, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-06-14 12:40:33,119 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-06-14 12:40:33,119 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 131 flow [2024-06-14 12:40:33,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:33,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:33,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:33,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:40:33,120 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)] === [2024-06-14 12:40:33,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:33,120 INFO L85 PathProgramCache]: Analyzing trace with hash -2074436653, now seen corresponding path program 1 times [2024-06-14 12:40:33,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:33,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482260737] [2024-06-14 12:40:33,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:33,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:33,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:33,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482260737] [2024-06-14 12:40:33,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482260737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:33,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:33,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:40:33,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870700924] [2024-06-14 12:40:33,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:33,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:40:33,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:33,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:40:33,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:40:33,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:33,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2024-06-14 12:40:33,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:33,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:33,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:33,873 INFO L124 PetriNetUnfolderBase]: 179/337 cut-off events. [2024-06-14 12:40:33,873 INFO L125 PetriNetUnfolderBase]: For 532/532 co-relation queries the response was YES. [2024-06-14 12:40:33,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 995 conditions, 337 events. 179/337 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1337 event pairs, 49 based on Foata normal form. 3/338 useless extension candidates. Maximal degree in co-relation 975. Up to 269 conditions per place. [2024-06-14 12:40:33,875 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 31 selfloop transitions, 12 changer transitions 0/47 dead transitions. [2024-06-14 12:40:33,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 271 flow [2024-06-14 12:40:33,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:40:33,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:40:33,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-06-14 12:40:33,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 12:40:33,876 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 131 flow. Second operand 6 states and 88 transitions. [2024-06-14 12:40:33,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 271 flow [2024-06-14 12:40:33,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 255 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 12:40:33,879 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 183 flow [2024-06-14 12:40:33,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-06-14 12:40:33,879 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2024-06-14 12:40:33,879 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 183 flow [2024-06-14 12:40:33,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2024-06-14 12:40:33,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:33,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:33,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:40:33,880 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)] === [2024-06-14 12:40:33,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:33,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1316054797, now seen corresponding path program 1 times [2024-06-14 12:40:33,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:33,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576035482] [2024-06-14 12:40:33,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:33,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:34,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:34,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576035482] [2024-06-14 12:40:34,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576035482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:34,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:34,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:40:34,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813901041] [2024-06-14 12:40:34,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:34,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:40:34,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:34,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:40:34,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:40:34,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:34,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 183 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2024-06-14 12:40:34,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:34,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:34,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:34,609 INFO L124 PetriNetUnfolderBase]: 189/362 cut-off events. [2024-06-14 12:40:34,610 INFO L125 PetriNetUnfolderBase]: For 821/821 co-relation queries the response was YES. [2024-06-14 12:40:34,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1218 conditions, 362 events. 189/362 cut-off events. For 821/821 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1478 event pairs, 53 based on Foata normal form. 2/363 useless extension candidates. Maximal degree in co-relation 1195. Up to 315 conditions per place. [2024-06-14 12:40:34,612 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 39 selfloop transitions, 11 changer transitions 0/54 dead transitions. [2024-06-14 12:40:34,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 54 transitions, 345 flow [2024-06-14 12:40:34,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-14 12:40:34,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4199134199134199 [2024-06-14 12:40:34,613 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 183 flow. Second operand 7 states and 97 transitions. [2024-06-14 12:40:34,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 54 transitions, 345 flow [2024-06-14 12:40:34,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 54 transitions, 331 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 12:40:34,616 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 238 flow [2024-06-14 12:40:34,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=238, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-06-14 12:40:34,616 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2024-06-14 12:40:34,617 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 238 flow [2024-06-14 12:40:34,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2024-06-14 12:40:34,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:34,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:34,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:40:34,617 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)] === [2024-06-14 12:40:34,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:34,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1003308143, now seen corresponding path program 2 times [2024-06-14 12:40:34,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:34,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733429867] [2024-06-14 12:40:34,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:34,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:35,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:35,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:35,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733429867] [2024-06-14 12:40:35,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733429867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:35,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:35,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:40:35,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106088260] [2024-06-14 12:40:35,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:35,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:40:35,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:35,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:40:35,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:40:35,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:35,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 238 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2024-06-14 12:40:35,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:35,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:35,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:35,348 INFO L124 PetriNetUnfolderBase]: 195/374 cut-off events. [2024-06-14 12:40:35,348 INFO L125 PetriNetUnfolderBase]: For 1156/1156 co-relation queries the response was YES. [2024-06-14 12:40:35,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 374 events. 195/374 cut-off events. For 1156/1156 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1552 event pairs, 50 based on Foata normal form. 2/375 useless extension candidates. Maximal degree in co-relation 1327. Up to 319 conditions per place. [2024-06-14 12:40:35,350 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 38 selfloop transitions, 12 changer transitions 0/54 dead transitions. [2024-06-14 12:40:35,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 383 flow [2024-06-14 12:40:35,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:40:35,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:40:35,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2024-06-14 12:40:35,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-14 12:40:35,351 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 238 flow. Second operand 6 states and 85 transitions. [2024-06-14 12:40:35,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 383 flow [2024-06-14 12:40:35,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 362 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:35,354 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 272 flow [2024-06-14 12:40:35,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-06-14 12:40:35,354 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2024-06-14 12:40:35,354 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 272 flow [2024-06-14 12:40:35,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2024-06-14 12:40:35,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:35,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:35,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:40:35,355 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)] === [2024-06-14 12:40:35,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash 116965133, now seen corresponding path program 3 times [2024-06-14 12:40:35,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:35,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361098096] [2024-06-14 12:40:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:35,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:35,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:35,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361098096] [2024-06-14 12:40:35,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361098096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:35,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:35,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:40:35,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353117100] [2024-06-14 12:40:35,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:35,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:40:35,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:35,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:40:35,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:40:35,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:35,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2024-06-14 12:40:35,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:35,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:35,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:36,150 INFO L124 PetriNetUnfolderBase]: 185/358 cut-off events. [2024-06-14 12:40:36,150 INFO L125 PetriNetUnfolderBase]: For 1428/1428 co-relation queries the response was YES. [2024-06-14 12:40:36,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 358 events. 185/358 cut-off events. For 1428/1428 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1470 event pairs, 52 based on Foata normal form. 4/359 useless extension candidates. Maximal degree in co-relation 1295. Up to 269 conditions per place. [2024-06-14 12:40:36,152 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 33 selfloop transitions, 16 changer transitions 0/53 dead transitions. [2024-06-14 12:40:36,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 53 transitions, 394 flow [2024-06-14 12:40:36,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:40:36,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:40:36,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2024-06-14 12:40:36,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-14 12:40:36,153 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 272 flow. Second operand 6 states and 87 transitions. [2024-06-14 12:40:36,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 53 transitions, 394 flow [2024-06-14 12:40:36,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 53 transitions, 364 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:36,156 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 281 flow [2024-06-14 12:40:36,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=281, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-06-14 12:40:36,156 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2024-06-14 12:40:36,157 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 281 flow [2024-06-14 12:40:36,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 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) [2024-06-14 12:40:36,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:36,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:36,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:40:36,157 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)] === [2024-06-14 12:40:36,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:36,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1003554221, now seen corresponding path program 1 times [2024-06-14 12:40:36,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:36,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183339345] [2024-06-14 12:40:36,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:36,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:36,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:36,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183339345] [2024-06-14 12:40:36,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183339345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:36,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:36,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:40:36,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73228436] [2024-06-14 12:40:36,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:36,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:40:36,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:36,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:40:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:40:36,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:36,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 281 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:36,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:36,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:36,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:36,980 INFO L124 PetriNetUnfolderBase]: 194/371 cut-off events. [2024-06-14 12:40:36,980 INFO L125 PetriNetUnfolderBase]: For 1351/1351 co-relation queries the response was YES. [2024-06-14 12:40:36,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1369 conditions, 371 events. 194/371 cut-off events. For 1351/1351 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1539 event pairs, 51 based on Foata normal form. 3/371 useless extension candidates. Maximal degree in co-relation 1341. Up to 260 conditions per place. [2024-06-14 12:40:36,982 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 35 selfloop transitions, 22 changer transitions 0/61 dead transitions. [2024-06-14 12:40:36,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 61 transitions, 465 flow [2024-06-14 12:40:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-06-14 12:40:36,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-14 12:40:36,984 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 281 flow. Second operand 7 states and 102 transitions. [2024-06-14 12:40:36,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 61 transitions, 465 flow [2024-06-14 12:40:36,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 420 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:36,986 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 316 flow [2024-06-14 12:40:36,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=316, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-14 12:40:36,987 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2024-06-14 12:40:36,987 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 316 flow [2024-06-14 12:40:36,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:36,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:36,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:36,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:40:36,988 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)] === [2024-06-14 12:40:36,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:36,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1045410674, now seen corresponding path program 1 times [2024-06-14 12:40:36,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:36,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524738714] [2024-06-14 12:40:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:36,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:37,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:37,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:37,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524738714] [2024-06-14 12:40:37,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524738714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:37,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:37,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:37,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786493649] [2024-06-14 12:40:37,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:37,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:37,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:37,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:37,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:37,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:37,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 316 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:37,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:37,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:37,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:37,912 INFO L124 PetriNetUnfolderBase]: 203/394 cut-off events. [2024-06-14 12:40:37,912 INFO L125 PetriNetUnfolderBase]: For 1622/1622 co-relation queries the response was YES. [2024-06-14 12:40:37,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 394 events. 203/394 cut-off events. For 1622/1622 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1657 event pairs, 48 based on Foata normal form. 3/394 useless extension candidates. Maximal degree in co-relation 1482. Up to 249 conditions per place. [2024-06-14 12:40:37,914 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 38 selfloop transitions, 26 changer transitions 0/68 dead transitions. [2024-06-14 12:40:37,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 528 flow [2024-06-14 12:40:37,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-14 12:40:37,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-14 12:40:37,915 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 316 flow. Second operand 8 states and 116 transitions. [2024-06-14 12:40:37,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 528 flow [2024-06-14 12:40:37,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 68 transitions, 503 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 12:40:37,918 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 385 flow [2024-06-14 12:40:37,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=385, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-06-14 12:40:37,919 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 31 predicate places. [2024-06-14 12:40:37,919 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 385 flow [2024-06-14 12:40:37,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:37,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:37,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:37,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:40:37,920 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)] === [2024-06-14 12:40:37,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:37,920 INFO L85 PathProgramCache]: Analyzing trace with hash 407007084, now seen corresponding path program 1 times [2024-06-14 12:40:37,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:37,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810010598] [2024-06-14 12:40:37,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:37,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:38,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:38,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:38,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810010598] [2024-06-14 12:40:38,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810010598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:38,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:38,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:40:38,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134879299] [2024-06-14 12:40:38,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:38,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:40:38,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:38,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:40:38,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:40:38,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:38,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 385 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:38,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:38,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:38,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:38,873 INFO L124 PetriNetUnfolderBase]: 201/393 cut-off events. [2024-06-14 12:40:38,873 INFO L125 PetriNetUnfolderBase]: For 2013/2013 co-relation queries the response was YES. [2024-06-14 12:40:38,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1628 conditions, 393 events. 201/393 cut-off events. For 2013/2013 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1675 event pairs, 54 based on Foata normal form. 1/393 useless extension candidates. Maximal degree in co-relation 1597. Up to 327 conditions per place. [2024-06-14 12:40:38,876 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 53 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2024-06-14 12:40:38,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 69 transitions, 565 flow [2024-06-14 12:40:38,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:38,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:38,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-14 12:40:38,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 12:40:38,877 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 385 flow. Second operand 7 states and 98 transitions. [2024-06-14 12:40:38,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 69 transitions, 565 flow [2024-06-14 12:40:38,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 69 transitions, 532 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:38,880 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 401 flow [2024-06-14 12:40:38,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2024-06-14 12:40:38,881 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 34 predicate places. [2024-06-14 12:40:38,881 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 401 flow [2024-06-14 12:40:38,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:38,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:38,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:38,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:40:38,882 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)] === [2024-06-14 12:40:38,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:38,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1952017460, now seen corresponding path program 1 times [2024-06-14 12:40:38,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:38,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193625314] [2024-06-14 12:40:38,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:38,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:39,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:39,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:39,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193625314] [2024-06-14 12:40:39,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193625314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:39,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:39,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:39,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628297347] [2024-06-14 12:40:39,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:39,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:39,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:39,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:39,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:39,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:39,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 401 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:39,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:39,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:39,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:39,936 INFO L124 PetriNetUnfolderBase]: 207/399 cut-off events. [2024-06-14 12:40:39,936 INFO L125 PetriNetUnfolderBase]: For 2421/2421 co-relation queries the response was YES. [2024-06-14 12:40:39,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 399 events. 207/399 cut-off events. For 2421/2421 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1684 event pairs, 49 based on Foata normal form. 2/398 useless extension candidates. Maximal degree in co-relation 1681. Up to 278 conditions per place. [2024-06-14 12:40:39,939 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 44 selfloop transitions, 24 changer transitions 0/72 dead transitions. [2024-06-14 12:40:39,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 609 flow [2024-06-14 12:40:39,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:39,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-14 12:40:39,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-14 12:40:39,940 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 401 flow. Second operand 8 states and 114 transitions. [2024-06-14 12:40:39,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 609 flow [2024-06-14 12:40:39,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 72 transitions, 576 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:39,943 INFO L231 Difference]: Finished difference. Result has 69 places, 59 transitions, 435 flow [2024-06-14 12:40:39,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=435, PETRI_PLACES=69, PETRI_TRANSITIONS=59} [2024-06-14 12:40:39,944 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2024-06-14 12:40:39,944 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 59 transitions, 435 flow [2024-06-14 12:40:39,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:39,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:39,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:39,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:40:39,945 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)] === [2024-06-14 12:40:39,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:39,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1204199010, now seen corresponding path program 2 times [2024-06-14 12:40:39,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:39,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028757290] [2024-06-14 12:40:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:39,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:39,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:40,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:40,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028757290] [2024-06-14 12:40:40,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028757290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:40,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:40,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:40:40,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277014036] [2024-06-14 12:40:40,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:40,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:40:40,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:40,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:40:40,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:40:40,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:40,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 59 transitions, 435 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:40,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:40,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:40,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:40,728 INFO L124 PetriNetUnfolderBase]: 203/395 cut-off events. [2024-06-14 12:40:40,728 INFO L125 PetriNetUnfolderBase]: For 2697/2697 co-relation queries the response was YES. [2024-06-14 12:40:40,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 395 events. 203/395 cut-off events. For 2697/2697 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1675 event pairs, 49 based on Foata normal form. 2/394 useless extension candidates. Maximal degree in co-relation 1706. Up to 275 conditions per place. [2024-06-14 12:40:40,730 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 43 selfloop transitions, 22 changer transitions 0/69 dead transitions. [2024-06-14 12:40:40,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 69 transitions, 595 flow [2024-06-14 12:40:40,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:40,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:40,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-14 12:40:40,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43722943722943725 [2024-06-14 12:40:40,732 INFO L175 Difference]: Start difference. First operand has 69 places, 59 transitions, 435 flow. Second operand 7 states and 101 transitions. [2024-06-14 12:40:40,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 69 transitions, 595 flow [2024-06-14 12:40:40,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 69 transitions, 541 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:40,736 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 430 flow [2024-06-14 12:40:40,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=430, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-06-14 12:40:40,736 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 38 predicate places. [2024-06-14 12:40:40,736 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 430 flow [2024-06-14 12:40:40,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:40,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:40,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:40,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:40:40,737 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)] === [2024-06-14 12:40:40,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:40,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1952006548, now seen corresponding path program 1 times [2024-06-14 12:40:40,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:40,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646597619] [2024-06-14 12:40:40,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:40,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:41,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:41,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646597619] [2024-06-14 12:40:41,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646597619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:41,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:41,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:41,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111301059] [2024-06-14 12:40:41,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:41,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:41,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:41,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:41,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:41,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:41,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 430 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 12:40:41,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:41,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:41,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:41,993 INFO L124 PetriNetUnfolderBase]: 207/398 cut-off events. [2024-06-14 12:40:41,993 INFO L125 PetriNetUnfolderBase]: For 3026/3026 co-relation queries the response was YES. [2024-06-14 12:40:41,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1758 conditions, 398 events. 207/398 cut-off events. For 3026/3026 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1697 event pairs, 47 based on Foata normal form. 4/398 useless extension candidates. Maximal degree in co-relation 1723. Up to 215 conditions per place. [2024-06-14 12:40:41,995 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 42 selfloop transitions, 39 changer transitions 0/85 dead transitions. [2024-06-14 12:40:41,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 85 transitions, 786 flow [2024-06-14 12:40:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-14 12:40:41,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478114478114478 [2024-06-14 12:40:41,997 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 430 flow. Second operand 9 states and 133 transitions. [2024-06-14 12:40:41,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 85 transitions, 786 flow [2024-06-14 12:40:41,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 85 transitions, 730 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:42,001 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 578 flow [2024-06-14 12:40:42,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=578, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-06-14 12:40:42,001 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 44 predicate places. [2024-06-14 12:40:42,002 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 578 flow [2024-06-14 12:40:42,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 12:40:42,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:42,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:42,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:40:42,002 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)] === [2024-06-14 12:40:42,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:42,003 INFO L85 PathProgramCache]: Analyzing trace with hash 960235541, now seen corresponding path program 1 times [2024-06-14 12:40:42,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:42,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169103044] [2024-06-14 12:40:42,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:42,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:42,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:42,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:42,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169103044] [2024-06-14 12:40:42,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169103044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:42,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:42,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:40:42,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110154718] [2024-06-14 12:40:42,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:42,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:40:42,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:42,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:40:42,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:40:42,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:42,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 578 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:42,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:42,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:42,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:42,964 INFO L124 PetriNetUnfolderBase]: 205/395 cut-off events. [2024-06-14 12:40:42,964 INFO L125 PetriNetUnfolderBase]: For 3421/3421 co-relation queries the response was YES. [2024-06-14 12:40:42,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1971 conditions, 395 events. 205/395 cut-off events. For 3421/3421 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1660 event pairs, 48 based on Foata normal form. 1/392 useless extension candidates. Maximal degree in co-relation 1932. Up to 287 conditions per place. [2024-06-14 12:40:42,966 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 51 selfloop transitions, 22 changer transitions 0/77 dead transitions. [2024-06-14 12:40:42,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 77 transitions, 752 flow [2024-06-14 12:40:42,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:40:42,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:40:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-06-14 12:40:42,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-14 12:40:42,968 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 578 flow. Second operand 6 states and 88 transitions. [2024-06-14 12:40:42,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 77 transitions, 752 flow [2024-06-14 12:40:42,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 77 transitions, 688 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-14 12:40:42,973 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 570 flow [2024-06-14 12:40:42,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=570, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2024-06-14 12:40:42,975 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 47 predicate places. [2024-06-14 12:40:42,975 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 570 flow [2024-06-14 12:40:42,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:42,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:42,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:42,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:40:42,976 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)] === [2024-06-14 12:40:42,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:42,976 INFO L85 PathProgramCache]: Analyzing trace with hash -382998221, now seen corresponding path program 1 times [2024-06-14 12:40:42,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:42,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381974635] [2024-06-14 12:40:42,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:42,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:43,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:43,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381974635] [2024-06-14 12:40:43,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381974635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:43,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:43,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:43,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648114085] [2024-06-14 12:40:43,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:43,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:43,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:43,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:43,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:43,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:43,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 570 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 12:40:43,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:43,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:43,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:44,012 INFO L124 PetriNetUnfolderBase]: 221/428 cut-off events. [2024-06-14 12:40:44,013 INFO L125 PetriNetUnfolderBase]: For 4080/4080 co-relation queries the response was YES. [2024-06-14 12:40:44,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2153 conditions, 428 events. 221/428 cut-off events. For 4080/4080 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1850 event pairs, 46 based on Foata normal form. 2/427 useless extension candidates. Maximal degree in co-relation 2112. Up to 267 conditions per place. [2024-06-14 12:40:44,015 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 54 selfloop transitions, 31 changer transitions 0/89 dead transitions. [2024-06-14 12:40:44,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 89 transitions, 888 flow [2024-06-14 12:40:44,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:44,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:44,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-14 12:40:44,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-14 12:40:44,017 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 570 flow. Second operand 9 states and 130 transitions. [2024-06-14 12:40:44,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 89 transitions, 888 flow [2024-06-14 12:40:44,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 89 transitions, 844 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:44,022 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 625 flow [2024-06-14 12:40:44,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=625, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2024-06-14 12:40:44,023 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2024-06-14 12:40:44,023 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 625 flow [2024-06-14 12:40:44,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 12:40:44,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:44,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:44,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:40:44,023 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)] === [2024-06-14 12:40:44,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:44,024 INFO L85 PathProgramCache]: Analyzing trace with hash -382671791, now seen corresponding path program 2 times [2024-06-14 12:40:44,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:44,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857391474] [2024-06-14 12:40:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:44,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:44,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:44,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:44,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857391474] [2024-06-14 12:40:44,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857391474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:44,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:44,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:44,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410597785] [2024-06-14 12:40:44,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:44,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:44,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:44,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:44,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:44,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:44,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 625 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 12:40:44,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:44,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:44,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:45,023 INFO L124 PetriNetUnfolderBase]: 217/424 cut-off events. [2024-06-14 12:40:45,023 INFO L125 PetriNetUnfolderBase]: For 4313/4313 co-relation queries the response was YES. [2024-06-14 12:40:45,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 424 events. 217/424 cut-off events. For 4313/4313 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1837 event pairs, 47 based on Foata normal form. 2/423 useless extension candidates. Maximal degree in co-relation 2124. Up to 264 conditions per place. [2024-06-14 12:40:45,026 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 53 selfloop transitions, 31 changer transitions 0/88 dead transitions. [2024-06-14 12:40:45,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 88 transitions, 879 flow [2024-06-14 12:40:45,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:45,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:45,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-14 12:40:45,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43097643097643096 [2024-06-14 12:40:45,027 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 625 flow. Second operand 9 states and 128 transitions. [2024-06-14 12:40:45,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 88 transitions, 879 flow [2024-06-14 12:40:45,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 88 transitions, 809 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:45,034 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 622 flow [2024-06-14 12:40:45,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=622, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-06-14 12:40:45,035 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 54 predicate places. [2024-06-14 12:40:45,035 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 622 flow [2024-06-14 12:40:45,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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) [2024-06-14 12:40:45,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:45,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:45,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:40:45,036 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)] === [2024-06-14 12:40:45,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:45,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1547128849, now seen corresponding path program 3 times [2024-06-14 12:40:45,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:45,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807382746] [2024-06-14 12:40:45,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:45,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:45,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:45,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807382746] [2024-06-14 12:40:45,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807382746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:45,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:45,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:45,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820829912] [2024-06-14 12:40:45,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:45,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:45,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:45,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:45,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:45,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:45,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 622 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:45,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:45,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:45,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:45,903 INFO L124 PetriNetUnfolderBase]: 213/420 cut-off events. [2024-06-14 12:40:45,904 INFO L125 PetriNetUnfolderBase]: For 4522/4522 co-relation queries the response was YES. [2024-06-14 12:40:45,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2136 conditions, 420 events. 213/420 cut-off events. For 4522/4522 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1821 event pairs, 48 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 2093. Up to 261 conditions per place. [2024-06-14 12:40:45,906 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 52 selfloop transitions, 29 changer transitions 0/85 dead transitions. [2024-06-14 12:40:45,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 85 transitions, 828 flow [2024-06-14 12:40:45,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:45,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-14 12:40:45,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-06-14 12:40:45,907 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 622 flow. Second operand 8 states and 115 transitions. [2024-06-14 12:40:45,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 85 transitions, 828 flow [2024-06-14 12:40:45,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 759 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:45,913 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 616 flow [2024-06-14 12:40:45,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=616, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-06-14 12:40:45,913 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 54 predicate places. [2024-06-14 12:40:45,914 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 616 flow [2024-06-14 12:40:45,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:45,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:45,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:45,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:40:45,914 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)] === [2024-06-14 12:40:45,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:45,915 INFO L85 PathProgramCache]: Analyzing trace with hash -382659887, now seen corresponding path program 1 times [2024-06-14 12:40:45,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:45,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563636201] [2024-06-14 12:40:45,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:45,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:46,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:46,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:46,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563636201] [2024-06-14 12:40:46,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563636201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:46,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:46,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:46,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225773396] [2024-06-14 12:40:46,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:46,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:46,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:46,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:46,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:47,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:47,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 616 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:47,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:47,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:47,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:47,283 INFO L124 PetriNetUnfolderBase]: 233/460 cut-off events. [2024-06-14 12:40:47,283 INFO L125 PetriNetUnfolderBase]: For 6514/6514 co-relation queries the response was YES. [2024-06-14 12:40:47,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2236 conditions, 460 events. 233/460 cut-off events. For 6514/6514 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2046 event pairs, 50 based on Foata normal form. 14/471 useless extension candidates. Maximal degree in co-relation 2192. Up to 242 conditions per place. [2024-06-14 12:40:47,286 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 49 selfloop transitions, 35 changer transitions 7/95 dead transitions. [2024-06-14 12:40:47,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 95 transitions, 890 flow [2024-06-14 12:40:47,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-14 12:40:47,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-14 12:40:47,287 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 616 flow. Second operand 10 states and 143 transitions. [2024-06-14 12:40:47,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 95 transitions, 890 flow [2024-06-14 12:40:47,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 95 transitions, 817 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:47,293 INFO L231 Difference]: Finished difference. Result has 90 places, 74 transitions, 631 flow [2024-06-14 12:40:47,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=631, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2024-06-14 12:40:47,293 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 58 predicate places. [2024-06-14 12:40:47,293 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 631 flow [2024-06-14 12:40:47,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:47,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:47,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:47,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:40:47,294 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)] === [2024-06-14 12:40:47,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:47,294 INFO L85 PathProgramCache]: Analyzing trace with hash -578267035, now seen corresponding path program 1 times [2024-06-14 12:40:47,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:47,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540627540] [2024-06-14 12:40:47,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:47,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:47,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:47,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:47,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540627540] [2024-06-14 12:40:47,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540627540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:47,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:47,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:47,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222504238] [2024-06-14 12:40:47,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:47,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:47,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:47,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:47,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:48,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:48,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 631 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:48,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:48,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:48,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:48,263 INFO L124 PetriNetUnfolderBase]: 225/454 cut-off events. [2024-06-14 12:40:48,263 INFO L125 PetriNetUnfolderBase]: For 5150/5150 co-relation queries the response was YES. [2024-06-14 12:40:48,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2306 conditions, 454 events. 225/454 cut-off events. For 5150/5150 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2036 event pairs, 31 based on Foata normal form. 2/455 useless extension candidates. Maximal degree in co-relation 2260. Up to 359 conditions per place. [2024-06-14 12:40:48,266 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 74 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2024-06-14 12:40:48,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 90 transitions, 851 flow [2024-06-14 12:40:48,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:48,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:48,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-14 12:40:48,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:40:48,267 INFO L175 Difference]: Start difference. First operand has 90 places, 74 transitions, 631 flow. Second operand 8 states and 108 transitions. [2024-06-14 12:40:48,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 90 transitions, 851 flow [2024-06-14 12:40:48,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 772 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:48,275 INFO L231 Difference]: Finished difference. Result has 91 places, 75 transitions, 590 flow [2024-06-14 12:40:48,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=590, PETRI_PLACES=91, PETRI_TRANSITIONS=75} [2024-06-14 12:40:48,275 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-06-14 12:40:48,276 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 75 transitions, 590 flow [2024-06-14 12:40:48,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:48,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:48,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:48,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:40:48,276 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)] === [2024-06-14 12:40:48,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:48,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1207718159, now seen corresponding path program 2 times [2024-06-14 12:40:48,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:48,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386374512] [2024-06-14 12:40:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:48,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:48,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:48,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386374512] [2024-06-14 12:40:48,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386374512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:48,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:48,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:48,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649865539] [2024-06-14 12:40:48,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:48,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:48,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:48,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:49,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:49,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 75 transitions, 590 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:49,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:49,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:49,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:49,244 INFO L124 PetriNetUnfolderBase]: 229/458 cut-off events. [2024-06-14 12:40:49,244 INFO L125 PetriNetUnfolderBase]: For 5413/5413 co-relation queries the response was YES. [2024-06-14 12:40:49,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2276 conditions, 458 events. 229/458 cut-off events. For 5413/5413 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2058 event pairs, 51 based on Foata normal form. 2/459 useless extension candidates. Maximal degree in co-relation 2229. Up to 384 conditions per place. [2024-06-14 12:40:49,247 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 73 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-14 12:40:49,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 90 transitions, 810 flow [2024-06-14 12:40:49,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:49,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:49,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-14 12:40:49,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128787878787879 [2024-06-14 12:40:49,248 INFO L175 Difference]: Start difference. First operand has 91 places, 75 transitions, 590 flow. Second operand 8 states and 109 transitions. [2024-06-14 12:40:49,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 90 transitions, 810 flow [2024-06-14 12:40:49,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 90 transitions, 768 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:49,255 INFO L231 Difference]: Finished difference. Result has 91 places, 76 transitions, 590 flow [2024-06-14 12:40:49,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=590, PETRI_PLACES=91, PETRI_TRANSITIONS=76} [2024-06-14 12:40:49,256 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-06-14 12:40:49,256 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 76 transitions, 590 flow [2024-06-14 12:40:49,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:49,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:49,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:49,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:40:49,256 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)] === [2024-06-14 12:40:49,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:49,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1272909201, now seen corresponding path program 1 times [2024-06-14 12:40:49,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:49,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702276377] [2024-06-14 12:40:49,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:49,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:49,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:49,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:49,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:49,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702276377] [2024-06-14 12:40:49,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702276377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:49,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:49,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:49,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970946892] [2024-06-14 12:40:49,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:49,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:49,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:49,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:49,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:49,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:49,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 76 transitions, 590 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:49,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:49,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:49,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:50,142 INFO L124 PetriNetUnfolderBase]: 225/446 cut-off events. [2024-06-14 12:40:50,142 INFO L125 PetriNetUnfolderBase]: For 4649/4649 co-relation queries the response was YES. [2024-06-14 12:40:50,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 446 events. 225/446 cut-off events. For 4649/4649 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2003 event pairs, 47 based on Foata normal form. 1/443 useless extension candidates. Maximal degree in co-relation 2133. Up to 306 conditions per place. [2024-06-14 12:40:50,145 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 52 selfloop transitions, 30 changer transitions 0/86 dead transitions. [2024-06-14 12:40:50,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 86 transitions, 796 flow [2024-06-14 12:40:50,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:50,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-06-14 12:40:50,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-14 12:40:50,146 INFO L175 Difference]: Start difference. First operand has 91 places, 76 transitions, 590 flow. Second operand 7 states and 102 transitions. [2024-06-14 12:40:50,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 86 transitions, 796 flow [2024-06-14 12:40:50,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 86 transitions, 760 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:50,152 INFO L231 Difference]: Finished difference. Result has 92 places, 76 transitions, 623 flow [2024-06-14 12:40:50,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=623, PETRI_PLACES=92, PETRI_TRANSITIONS=76} [2024-06-14 12:40:50,152 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 60 predicate places. [2024-06-14 12:40:50,152 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 76 transitions, 623 flow [2024-06-14 12:40:50,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:50,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:50,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:50,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:40:50,153 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)] === [2024-06-14 12:40:50,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:50,153 INFO L85 PathProgramCache]: Analyzing trace with hash 101143169, now seen corresponding path program 3 times [2024-06-14 12:40:50,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:50,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683922234] [2024-06-14 12:40:50,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:50,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:50,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:50,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:50,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683922234] [2024-06-14 12:40:50,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683922234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:50,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:50,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:50,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782085724] [2024-06-14 12:40:50,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:50,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:50,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:50,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:50,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:51,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:51,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 76 transitions, 623 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:51,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:51,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:51,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:51,216 INFO L124 PetriNetUnfolderBase]: 229/465 cut-off events. [2024-06-14 12:40:51,217 INFO L125 PetriNetUnfolderBase]: For 5390/5390 co-relation queries the response was YES. [2024-06-14 12:40:51,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 465 events. 229/465 cut-off events. For 5390/5390 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2118 event pairs, 48 based on Foata normal form. 2/466 useless extension candidates. Maximal degree in co-relation 2241. Up to 386 conditions per place. [2024-06-14 12:40:51,220 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 71 selfloop transitions, 16 changer transitions 0/91 dead transitions. [2024-06-14 12:40:51,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 91 transitions, 871 flow [2024-06-14 12:40:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:51,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-06-14 12:40:51,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-14 12:40:51,221 INFO L175 Difference]: Start difference. First operand has 92 places, 76 transitions, 623 flow. Second operand 8 states and 106 transitions. [2024-06-14 12:40:51,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 91 transitions, 871 flow [2024-06-14 12:40:51,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 801 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 12:40:51,228 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 645 flow [2024-06-14 12:40:51,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=645, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2024-06-14 12:40:51,229 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2024-06-14 12:40:51,229 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 645 flow [2024-06-14 12:40:51,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:51,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:51,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:51,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:40:51,230 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)] === [2024-06-14 12:40:51,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:51,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1562043185, now seen corresponding path program 4 times [2024-06-14 12:40:51,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:51,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433091408] [2024-06-14 12:40:51,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:51,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:52,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:52,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:52,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433091408] [2024-06-14 12:40:52,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433091408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:52,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:52,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:52,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804701742] [2024-06-14 12:40:52,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:52,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:52,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:52,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:52,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:52,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:52,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 645 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:52,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:52,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:52,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:52,321 INFO L124 PetriNetUnfolderBase]: 230/462 cut-off events. [2024-06-14 12:40:52,331 INFO L125 PetriNetUnfolderBase]: For 5460/5460 co-relation queries the response was YES. [2024-06-14 12:40:52,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 462 events. 230/462 cut-off events. For 5460/5460 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2097 event pairs, 42 based on Foata normal form. 4/463 useless extension candidates. Maximal degree in co-relation 2194. Up to 351 conditions per place. [2024-06-14 12:40:52,335 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 69 selfloop transitions, 21 changer transitions 0/94 dead transitions. [2024-06-14 12:40:52,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 94 transitions, 890 flow [2024-06-14 12:40:52,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:40:52,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:40:52,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 110 transitions. [2024-06-14 12:40:52,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-14 12:40:52,336 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 645 flow. Second operand 8 states and 110 transitions. [2024-06-14 12:40:52,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 94 transitions, 890 flow [2024-06-14 12:40:52,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 94 transitions, 847 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:52,343 INFO L231 Difference]: Finished difference. Result has 98 places, 84 transitions, 691 flow [2024-06-14 12:40:52,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=691, PETRI_PLACES=98, PETRI_TRANSITIONS=84} [2024-06-14 12:40:52,343 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2024-06-14 12:40:52,343 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 84 transitions, 691 flow [2024-06-14 12:40:52,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:52,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:52,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:52,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:40:52,344 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)] === [2024-06-14 12:40:52,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:52,344 INFO L85 PathProgramCache]: Analyzing trace with hash -140623617, now seen corresponding path program 1 times [2024-06-14 12:40:52,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:52,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138831404] [2024-06-14 12:40:52,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:52,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:53,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:53,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138831404] [2024-06-14 12:40:53,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138831404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:53,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:53,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:53,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130873307] [2024-06-14 12:40:53,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:53,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:53,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:53,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:53,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:53,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 84 transitions, 691 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:53,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:53,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:53,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:53,609 INFO L124 PetriNetUnfolderBase]: 236/471 cut-off events. [2024-06-14 12:40:53,609 INFO L125 PetriNetUnfolderBase]: For 5559/5559 co-relation queries the response was YES. [2024-06-14 12:40:53,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 471 events. 236/471 cut-off events. For 5559/5559 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2165 event pairs, 45 based on Foata normal form. 2/469 useless extension candidates. Maximal degree in co-relation 2295. Up to 285 conditions per place. [2024-06-14 12:40:53,612 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 53 selfloop transitions, 44 changer transitions 1/102 dead transitions. [2024-06-14 12:40:53,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 102 transitions, 1001 flow [2024-06-14 12:40:53,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:53,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:53,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-14 12:40:53,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 12:40:53,626 INFO L175 Difference]: Start difference. First operand has 98 places, 84 transitions, 691 flow. Second operand 10 states and 140 transitions. [2024-06-14 12:40:53,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 102 transitions, 1001 flow [2024-06-14 12:40:53,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 102 transitions, 924 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:40:53,633 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 744 flow [2024-06-14 12:40:53,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=744, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2024-06-14 12:40:53,634 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 70 predicate places. [2024-06-14 12:40:53,634 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 744 flow [2024-06-14 12:40:53,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:53,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:53,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:53,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:40:53,635 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)] === [2024-06-14 12:40:53,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:53,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1011930379, now seen corresponding path program 2 times [2024-06-14 12:40:53,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:53,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572709397] [2024-06-14 12:40:53,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:53,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:54,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:54,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572709397] [2024-06-14 12:40:54,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572709397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:54,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:54,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:54,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233850420] [2024-06-14 12:40:54,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:54,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:54,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:54,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:54,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:54,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:54,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 744 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:54,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:54,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:54,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:54,840 INFO L124 PetriNetUnfolderBase]: 239/485 cut-off events. [2024-06-14 12:40:54,841 INFO L125 PetriNetUnfolderBase]: For 5829/5829 co-relation queries the response was YES. [2024-06-14 12:40:54,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2445 conditions, 485 events. 239/485 cut-off events. For 5829/5829 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2255 event pairs, 39 based on Foata normal form. 1/483 useless extension candidates. Maximal degree in co-relation 2395. Up to 360 conditions per place. [2024-06-14 12:40:54,843 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 74 selfloop transitions, 33 changer transitions 4/115 dead transitions. [2024-06-14 12:40:54,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 115 transitions, 1174 flow [2024-06-14 12:40:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:40:54,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:40:54,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:40:54,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-14 12:40:54,845 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 744 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:40:54,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 115 transitions, 1174 flow [2024-06-14 12:40:54,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 115 transitions, 1052 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:54,853 INFO L231 Difference]: Finished difference. Result has 109 places, 98 transitions, 863 flow [2024-06-14 12:40:54,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=863, PETRI_PLACES=109, PETRI_TRANSITIONS=98} [2024-06-14 12:40:54,853 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 77 predicate places. [2024-06-14 12:40:54,853 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 98 transitions, 863 flow [2024-06-14 12:40:54,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:54,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:54,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:54,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:40:54,854 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)] === [2024-06-14 12:40:54,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:54,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1798411923, now seen corresponding path program 3 times [2024-06-14 12:40:54,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:54,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34049472] [2024-06-14 12:40:54,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:54,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:55,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:55,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34049472] [2024-06-14 12:40:55,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34049472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:55,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:55,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:40:55,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383228850] [2024-06-14 12:40:55,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:55,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:40:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:40:55,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:40:55,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:55,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 98 transitions, 863 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:55,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:55,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:55,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:56,270 INFO L124 PetriNetUnfolderBase]: 231/458 cut-off events. [2024-06-14 12:40:56,271 INFO L125 PetriNetUnfolderBase]: For 6414/6414 co-relation queries the response was YES. [2024-06-14 12:40:56,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 458 events. 231/458 cut-off events. For 6414/6414 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2075 event pairs, 40 based on Foata normal form. 2/456 useless extension candidates. Maximal degree in co-relation 2380. Up to 275 conditions per place. [2024-06-14 12:40:56,274 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 62 selfloop transitions, 47 changer transitions 0/113 dead transitions. [2024-06-14 12:40:56,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 113 transitions, 1179 flow [2024-06-14 12:40:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:40:56,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:40:56,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-14 12:40:56,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-14 12:40:56,275 INFO L175 Difference]: Start difference. First operand has 109 places, 98 transitions, 863 flow. Second operand 10 states and 141 transitions. [2024-06-14 12:40:56,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 113 transitions, 1179 flow [2024-06-14 12:40:56,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 113 transitions, 1075 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-14 12:40:56,286 INFO L231 Difference]: Finished difference. Result has 115 places, 101 transitions, 922 flow [2024-06-14 12:40:56,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=922, PETRI_PLACES=115, PETRI_TRANSITIONS=101} [2024-06-14 12:40:56,286 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 83 predicate places. [2024-06-14 12:40:56,286 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 101 transitions, 922 flow [2024-06-14 12:40:56,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:56,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:56,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:56,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:40:56,287 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)] === [2024-06-14 12:40:56,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:56,287 INFO L85 PathProgramCache]: Analyzing trace with hash 726858093, now seen corresponding path program 4 times [2024-06-14 12:40:56,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:56,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863419680] [2024-06-14 12:40:56,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:56,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:57,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:57,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:57,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863419680] [2024-06-14 12:40:57,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863419680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:57,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:57,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:40:57,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002409642] [2024-06-14 12:40:57,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:57,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:40:57,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:57,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:40:57,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:40:57,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:57,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 101 transitions, 922 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:40:57,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:57,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:57,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:57,312 INFO L124 PetriNetUnfolderBase]: 229/460 cut-off events. [2024-06-14 12:40:57,313 INFO L125 PetriNetUnfolderBase]: For 5996/5996 co-relation queries the response was YES. [2024-06-14 12:40:57,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2428 conditions, 460 events. 229/460 cut-off events. For 5996/5996 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2075 event pairs, 35 based on Foata normal form. 1/458 useless extension candidates. Maximal degree in co-relation 2372. Up to 346 conditions per place. [2024-06-14 12:40:57,321 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 84 selfloop transitions, 28 changer transitions 0/116 dead transitions. [2024-06-14 12:40:57,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 116 transitions, 1224 flow [2024-06-14 12:40:57,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:57,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:57,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-14 12:40:57,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-14 12:40:57,340 INFO L175 Difference]: Start difference. First operand has 115 places, 101 transitions, 922 flow. Second operand 9 states and 122 transitions. [2024-06-14 12:40:57,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 116 transitions, 1224 flow [2024-06-14 12:40:57,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 116 transitions, 1105 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:40:57,354 INFO L231 Difference]: Finished difference. Result has 117 places, 106 transitions, 922 flow [2024-06-14 12:40:57,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=922, PETRI_PLACES=117, PETRI_TRANSITIONS=106} [2024-06-14 12:40:57,358 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 85 predicate places. [2024-06-14 12:40:57,358 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 106 transitions, 922 flow [2024-06-14 12:40:57,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:40:57,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:57,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:57,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:40:57,359 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)] === [2024-06-14 12:40:57,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:57,359 INFO L85 PathProgramCache]: Analyzing trace with hash 572325024, now seen corresponding path program 1 times [2024-06-14 12:40:57,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:57,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266027039] [2024-06-14 12:40:57,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:57,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:58,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:58,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266027039] [2024-06-14 12:40:58,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266027039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:58,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:58,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:58,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478950229] [2024-06-14 12:40:58,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:58,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:58,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:58,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:58,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:58,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:58,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 106 transitions, 922 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:58,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:58,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:58,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:58,489 INFO L124 PetriNetUnfolderBase]: 246/490 cut-off events. [2024-06-14 12:40:58,490 INFO L125 PetriNetUnfolderBase]: For 6589/6589 co-relation queries the response was YES. [2024-06-14 12:40:58,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2510 conditions, 490 events. 246/490 cut-off events. For 6589/6589 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2282 event pairs, 38 based on Foata normal form. 2/488 useless extension candidates. Maximal degree in co-relation 2452. Up to 395 conditions per place. [2024-06-14 12:40:58,493 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 106 selfloop transitions, 17 changer transitions 0/127 dead transitions. [2024-06-14 12:40:58,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 127 transitions, 1258 flow [2024-06-14 12:40:58,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:40:58,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:40:58,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-14 12:40:58,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39730639730639733 [2024-06-14 12:40:58,494 INFO L175 Difference]: Start difference. First operand has 117 places, 106 transitions, 922 flow. Second operand 9 states and 118 transitions. [2024-06-14 12:40:58,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 127 transitions, 1258 flow [2024-06-14 12:40:58,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 127 transitions, 1187 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-14 12:40:58,505 INFO L231 Difference]: Finished difference. Result has 125 places, 114 transitions, 969 flow [2024-06-14 12:40:58,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=969, PETRI_PLACES=125, PETRI_TRANSITIONS=114} [2024-06-14 12:40:58,505 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 93 predicate places. [2024-06-14 12:40:58,506 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 969 flow [2024-06-14 12:40:58,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:58,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:58,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:58,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:40:58,506 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)] === [2024-06-14 12:40:58,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:58,506 INFO L85 PathProgramCache]: Analyzing trace with hash -135225838, now seen corresponding path program 2 times [2024-06-14 12:40:58,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:58,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602488017] [2024-06-14 12:40:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:58,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:40:59,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:40:59,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:40:59,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602488017] [2024-06-14 12:40:59,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602488017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:40:59,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:40:59,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:40:59,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89824403] [2024-06-14 12:40:59,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:40:59,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:40:59,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:40:59,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:40:59,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:40:59,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:40:59,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 114 transitions, 969 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:59,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:40:59,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:40:59,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:40:59,321 INFO L124 PetriNetUnfolderBase]: 250/499 cut-off events. [2024-06-14 12:40:59,322 INFO L125 PetriNetUnfolderBase]: For 7179/7179 co-relation queries the response was YES. [2024-06-14 12:40:59,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2567 conditions, 499 events. 250/499 cut-off events. For 7179/7179 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2324 event pairs, 19 based on Foata normal form. 2/496 useless extension candidates. Maximal degree in co-relation 2505. Up to 369 conditions per place. [2024-06-14 12:40:59,325 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 104 selfloop transitions, 16 changer transitions 0/124 dead transitions. [2024-06-14 12:40:59,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 124 transitions, 1239 flow [2024-06-14 12:40:59,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:40:59,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:40:59,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-14 12:40:59,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-14 12:40:59,327 INFO L175 Difference]: Start difference. First operand has 125 places, 114 transitions, 969 flow. Second operand 7 states and 93 transitions. [2024-06-14 12:40:59,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 124 transitions, 1239 flow [2024-06-14 12:40:59,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 124 transitions, 1222 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 12:40:59,341 INFO L231 Difference]: Finished difference. Result has 130 places, 115 transitions, 1002 flow [2024-06-14 12:40:59,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1002, PETRI_PLACES=130, PETRI_TRANSITIONS=115} [2024-06-14 12:40:59,341 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 98 predicate places. [2024-06-14 12:40:59,342 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 115 transitions, 1002 flow [2024-06-14 12:40:59,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:40:59,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:40:59,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:40:59,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:40:59,342 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)] === [2024-06-14 12:40:59,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:40:59,343 INFO L85 PathProgramCache]: Analyzing trace with hash -631592012, now seen corresponding path program 3 times [2024-06-14 12:40:59,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:40:59,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804242607] [2024-06-14 12:40:59,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:40:59,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:40:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:00,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:00,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804242607] [2024-06-14 12:41:00,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804242607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:00,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:00,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:00,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791511302] [2024-06-14 12:41:00,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:00,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:00,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:00,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:00,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:00,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:00,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 115 transitions, 1002 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:00,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:00,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:00,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:00,402 INFO L124 PetriNetUnfolderBase]: 254/507 cut-off events. [2024-06-14 12:41:00,402 INFO L125 PetriNetUnfolderBase]: For 7772/7772 co-relation queries the response was YES. [2024-06-14 12:41:00,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2647 conditions, 507 events. 254/507 cut-off events. For 7772/7772 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2381 event pairs, 44 based on Foata normal form. 2/504 useless extension candidates. Maximal degree in co-relation 2583. Up to 398 conditions per place. [2024-06-14 12:41:00,405 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 94 selfloop transitions, 25 changer transitions 0/123 dead transitions. [2024-06-14 12:41:00,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 123 transitions, 1268 flow [2024-06-14 12:41:00,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:41:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:41:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-14 12:41:00,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 12:41:00,406 INFO L175 Difference]: Start difference. First operand has 130 places, 115 transitions, 1002 flow. Second operand 7 states and 99 transitions. [2024-06-14 12:41:00,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 123 transitions, 1268 flow [2024-06-14 12:41:00,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 123 transitions, 1228 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:00,419 INFO L231 Difference]: Finished difference. Result has 132 places, 116 transitions, 1030 flow [2024-06-14 12:41:00,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1030, PETRI_PLACES=132, PETRI_TRANSITIONS=116} [2024-06-14 12:41:00,419 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 100 predicate places. [2024-06-14 12:41:00,419 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 116 transitions, 1030 flow [2024-06-14 12:41:00,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:00,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:00,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:00,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:41:00,420 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)] === [2024-06-14 12:41:00,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:00,420 INFO L85 PathProgramCache]: Analyzing trace with hash -631739882, now seen corresponding path program 4 times [2024-06-14 12:41:00,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:00,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338438736] [2024-06-14 12:41:00,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:00,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:01,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:01,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338438736] [2024-06-14 12:41:01,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338438736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:01,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:01,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331251696] [2024-06-14 12:41:01,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:01,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:01,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:01,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:01,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:01,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:01,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 116 transitions, 1030 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:01,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:01,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:01,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:01,493 INFO L124 PetriNetUnfolderBase]: 258/513 cut-off events. [2024-06-14 12:41:01,493 INFO L125 PetriNetUnfolderBase]: For 7872/7872 co-relation queries the response was YES. [2024-06-14 12:41:01,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 513 events. 258/513 cut-off events. For 7872/7872 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2419 event pairs, 42 based on Foata normal form. 2/510 useless extension candidates. Maximal degree in co-relation 2627. Up to 334 conditions per place. [2024-06-14 12:41:01,496 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 94 selfloop transitions, 28 changer transitions 0/126 dead transitions. [2024-06-14 12:41:01,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 126 transitions, 1360 flow [2024-06-14 12:41:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:41:01,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:41:01,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-14 12:41:01,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 12:41:01,497 INFO L175 Difference]: Start difference. First operand has 132 places, 116 transitions, 1030 flow. Second operand 7 states and 99 transitions. [2024-06-14 12:41:01,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 126 transitions, 1360 flow [2024-06-14 12:41:01,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 126 transitions, 1300 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:01,514 INFO L231 Difference]: Finished difference. Result has 134 places, 117 transitions, 1044 flow [2024-06-14 12:41:01,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1044, PETRI_PLACES=134, PETRI_TRANSITIONS=117} [2024-06-14 12:41:01,514 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 102 predicate places. [2024-06-14 12:41:01,514 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 117 transitions, 1044 flow [2024-06-14 12:41:01,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:01,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:01,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:01,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:41:01,514 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)] === [2024-06-14 12:41:01,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:01,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1159380354, now seen corresponding path program 5 times [2024-06-14 12:41:01,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:01,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655976209] [2024-06-14 12:41:01,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:01,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:02,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:02,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655976209] [2024-06-14 12:41:02,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655976209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:02,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:02,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:02,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261052834] [2024-06-14 12:41:02,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:02,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:02,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:02,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:02,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:02,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:02,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 117 transitions, 1044 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:02,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:02,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:02,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:02,551 INFO L124 PetriNetUnfolderBase]: 265/530 cut-off events. [2024-06-14 12:41:02,551 INFO L125 PetriNetUnfolderBase]: For 8395/8395 co-relation queries the response was YES. [2024-06-14 12:41:02,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2794 conditions, 530 events. 265/530 cut-off events. For 8395/8395 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2529 event pairs, 49 based on Foata normal form. 2/529 useless extension candidates. Maximal degree in co-relation 2728. Up to 419 conditions per place. [2024-06-14 12:41:02,554 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 100 selfloop transitions, 25 changer transitions 0/129 dead transitions. [2024-06-14 12:41:02,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 129 transitions, 1359 flow [2024-06-14 12:41:02,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:02,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:02,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2024-06-14 12:41:02,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053030303030303 [2024-06-14 12:41:02,555 INFO L175 Difference]: Start difference. First operand has 134 places, 117 transitions, 1044 flow. Second operand 8 states and 107 transitions. [2024-06-14 12:41:02,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 129 transitions, 1359 flow [2024-06-14 12:41:02,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 129 transitions, 1281 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:02,569 INFO L231 Difference]: Finished difference. Result has 137 places, 120 transitions, 1061 flow [2024-06-14 12:41:02,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1061, PETRI_PLACES=137, PETRI_TRANSITIONS=120} [2024-06-14 12:41:02,570 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 105 predicate places. [2024-06-14 12:41:02,570 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 120 transitions, 1061 flow [2024-06-14 12:41:02,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:02,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:02,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:02,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:41:02,570 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)] === [2024-06-14 12:41:02,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:02,570 INFO L85 PathProgramCache]: Analyzing trace with hash -960078564, now seen corresponding path program 6 times [2024-06-14 12:41:02,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:02,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610905126] [2024-06-14 12:41:02,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:02,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:03,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:03,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610905126] [2024-06-14 12:41:03,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610905126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:03,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:03,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:03,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825044354] [2024-06-14 12:41:03,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:03,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:03,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:03,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:03,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:03,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:03,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 120 transitions, 1061 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:03,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:03,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:03,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:03,511 INFO L124 PetriNetUnfolderBase]: 262/525 cut-off events. [2024-06-14 12:41:03,511 INFO L125 PetriNetUnfolderBase]: For 8094/8094 co-relation queries the response was YES. [2024-06-14 12:41:03,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2691 conditions, 525 events. 262/525 cut-off events. For 8094/8094 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2500 event pairs, 48 based on Foata normal form. 2/524 useless extension candidates. Maximal degree in co-relation 2625. Up to 414 conditions per place. [2024-06-14 12:41:03,514 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 97 selfloop transitions, 28 changer transitions 0/129 dead transitions. [2024-06-14 12:41:03,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 129 transitions, 1337 flow [2024-06-14 12:41:03,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:03,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:03,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-14 12:41:03,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128787878787879 [2024-06-14 12:41:03,515 INFO L175 Difference]: Start difference. First operand has 137 places, 120 transitions, 1061 flow. Second operand 8 states and 109 transitions. [2024-06-14 12:41:03,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 129 transitions, 1337 flow [2024-06-14 12:41:03,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 129 transitions, 1285 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:03,528 INFO L231 Difference]: Finished difference. Result has 140 places, 120 transitions, 1069 flow [2024-06-14 12:41:03,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1069, PETRI_PLACES=140, PETRI_TRANSITIONS=120} [2024-06-14 12:41:03,529 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2024-06-14 12:41:03,529 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 120 transitions, 1069 flow [2024-06-14 12:41:03,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:03,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:03,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:03,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:41:03,530 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)] === [2024-06-14 12:41:03,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:03,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1619625968, now seen corresponding path program 1 times [2024-06-14 12:41:03,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:03,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145955179] [2024-06-14 12:41:03,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:03,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:04,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:04,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145955179] [2024-06-14 12:41:04,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145955179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:04,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:04,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:04,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777711758] [2024-06-14 12:41:04,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:04,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:04,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:04,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:04,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:04,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:04,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 120 transitions, 1069 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:04,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:04,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:04,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:04,816 INFO L124 PetriNetUnfolderBase]: 282/571 cut-off events. [2024-06-14 12:41:04,817 INFO L125 PetriNetUnfolderBase]: For 13030/13030 co-relation queries the response was YES. [2024-06-14 12:41:04,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2863 conditions, 571 events. 282/571 cut-off events. For 13030/13030 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2792 event pairs, 54 based on Foata normal form. 12/580 useless extension candidates. Maximal degree in co-relation 2797. Up to 355 conditions per place. [2024-06-14 12:41:04,820 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 83 selfloop transitions, 41 changer transitions 9/137 dead transitions. [2024-06-14 12:41:04,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 137 transitions, 1417 flow [2024-06-14 12:41:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:04,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-14 12:41:04,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418732782369146 [2024-06-14 12:41:04,821 INFO L175 Difference]: Start difference. First operand has 140 places, 120 transitions, 1069 flow. Second operand 11 states and 152 transitions. [2024-06-14 12:41:04,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 137 transitions, 1417 flow [2024-06-14 12:41:04,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 137 transitions, 1321 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:04,837 INFO L231 Difference]: Finished difference. Result has 143 places, 116 transitions, 1043 flow [2024-06-14 12:41:04,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1043, PETRI_PLACES=143, PETRI_TRANSITIONS=116} [2024-06-14 12:41:04,837 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 111 predicate places. [2024-06-14 12:41:04,837 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 116 transitions, 1043 flow [2024-06-14 12:41:04,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:04,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:04,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:04,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:41:04,838 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)] === [2024-06-14 12:41:04,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:04,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1631053808, now seen corresponding path program 2 times [2024-06-14 12:41:04,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:04,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426753692] [2024-06-14 12:41:04,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:04,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:05,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:05,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426753692] [2024-06-14 12:41:05,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426753692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:05,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:05,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:05,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215863976] [2024-06-14 12:41:05,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:05,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:05,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:05,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:05,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:05,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:05,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 116 transitions, 1043 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:05,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:05,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:05,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:06,174 INFO L124 PetriNetUnfolderBase]: 269/546 cut-off events. [2024-06-14 12:41:06,174 INFO L125 PetriNetUnfolderBase]: For 10183/10183 co-relation queries the response was YES. [2024-06-14 12:41:06,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2869 conditions, 546 events. 269/546 cut-off events. For 10183/10183 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2643 event pairs, 47 based on Foata normal form. 2/545 useless extension candidates. Maximal degree in co-relation 2802. Up to 385 conditions per place. [2024-06-14 12:41:06,178 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 91 selfloop transitions, 39 changer transitions 0/134 dead transitions. [2024-06-14 12:41:06,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 134 transitions, 1442 flow [2024-06-14 12:41:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:41:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:41:06,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-14 12:41:06,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-06-14 12:41:06,179 INFO L175 Difference]: Start difference. First operand has 143 places, 116 transitions, 1043 flow. Second operand 12 states and 155 transitions. [2024-06-14 12:41:06,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 134 transitions, 1442 flow [2024-06-14 12:41:06,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 134 transitions, 1332 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-14 12:41:06,198 INFO L231 Difference]: Finished difference. Result has 142 places, 118 transitions, 1049 flow [2024-06-14 12:41:06,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=933, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1049, PETRI_PLACES=142, PETRI_TRANSITIONS=118} [2024-06-14 12:41:06,198 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 110 predicate places. [2024-06-14 12:41:06,198 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 118 transitions, 1049 flow [2024-06-14 12:41:06,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:06,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:06,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:06,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:41:06,199 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)] === [2024-06-14 12:41:06,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:06,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1305926738, now seen corresponding path program 3 times [2024-06-14 12:41:06,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:06,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610778769] [2024-06-14 12:41:06,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:06,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:06,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:06,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:06,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610778769] [2024-06-14 12:41:06,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610778769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:06,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:06,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:06,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468922147] [2024-06-14 12:41:06,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:06,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:06,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:06,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:06,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:07,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:07,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 118 transitions, 1049 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:07,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:07,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:07,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:07,303 INFO L124 PetriNetUnfolderBase]: 273/554 cut-off events. [2024-06-14 12:41:07,303 INFO L125 PetriNetUnfolderBase]: For 10911/10911 co-relation queries the response was YES. [2024-06-14 12:41:07,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2911 conditions, 554 events. 273/554 cut-off events. For 10911/10911 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2705 event pairs, 49 based on Foata normal form. 2/553 useless extension candidates. Maximal degree in co-relation 2845. Up to 431 conditions per place. [2024-06-14 12:41:07,306 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 98 selfloop transitions, 32 changer transitions 0/134 dead transitions. [2024-06-14 12:41:07,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 134 transitions, 1380 flow [2024-06-14 12:41:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:41:07,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-14 12:41:07,307 INFO L175 Difference]: Start difference. First operand has 142 places, 118 transitions, 1049 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:41:07,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 134 transitions, 1380 flow [2024-06-14 12:41:07,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 134 transitions, 1290 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:07,324 INFO L231 Difference]: Finished difference. Result has 146 places, 122 transitions, 1080 flow [2024-06-14 12:41:07,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1080, PETRI_PLACES=146, PETRI_TRANSITIONS=122} [2024-06-14 12:41:07,324 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2024-06-14 12:41:07,324 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 122 transitions, 1080 flow [2024-06-14 12:41:07,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:07,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:07,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:07,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:41:07,325 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)] === [2024-06-14 12:41:07,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:07,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1630667858, now seen corresponding path program 4 times [2024-06-14 12:41:07,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:07,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9156481] [2024-06-14 12:41:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:07,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:08,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:08,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:08,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9156481] [2024-06-14 12:41:08,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9156481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:08,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:08,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:08,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367860065] [2024-06-14 12:41:08,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:08,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:08,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:08,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:08,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:08,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:08,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 122 transitions, 1080 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:08,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:08,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:08,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:08,855 INFO L124 PetriNetUnfolderBase]: 270/547 cut-off events. [2024-06-14 12:41:08,855 INFO L125 PetriNetUnfolderBase]: For 10269/10269 co-relation queries the response was YES. [2024-06-14 12:41:08,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2811 conditions, 547 events. 270/547 cut-off events. For 10269/10269 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2670 event pairs, 43 based on Foata normal form. 2/544 useless extension candidates. Maximal degree in co-relation 2742. Up to 333 conditions per place. [2024-06-14 12:41:08,858 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 71 selfloop transitions, 59 changer transitions 0/134 dead transitions. [2024-06-14 12:41:08,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 134 transitions, 1366 flow [2024-06-14 12:41:08,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:41:08,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:41:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-14 12:41:08,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-14 12:41:08,861 INFO L175 Difference]: Start difference. First operand has 146 places, 122 transitions, 1080 flow. Second operand 12 states and 160 transitions. [2024-06-14 12:41:08,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 134 transitions, 1366 flow [2024-06-14 12:41:08,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 134 transitions, 1273 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:08,879 INFO L231 Difference]: Finished difference. Result has 150 places, 122 transitions, 1111 flow [2024-06-14 12:41:08,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1111, PETRI_PLACES=150, PETRI_TRANSITIONS=122} [2024-06-14 12:41:08,879 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 118 predicate places. [2024-06-14 12:41:08,879 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 122 transitions, 1111 flow [2024-06-14 12:41:08,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:08,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:08,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:08,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:41:08,880 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)] === [2024-06-14 12:41:08,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:08,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1057765360, now seen corresponding path program 5 times [2024-06-14 12:41:08,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:08,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719070777] [2024-06-14 12:41:08,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:08,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:09,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:09,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719070777] [2024-06-14 12:41:09,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719070777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:09,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:09,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:09,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711812265] [2024-06-14 12:41:09,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:09,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:09,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:09,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:09,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:09,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:09,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 122 transitions, 1111 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:09,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:09,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:09,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:10,056 INFO L124 PetriNetUnfolderBase]: 267/544 cut-off events. [2024-06-14 12:41:10,057 INFO L125 PetriNetUnfolderBase]: For 9516/9516 co-relation queries the response was YES. [2024-06-14 12:41:10,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2746 conditions, 544 events. 267/544 cut-off events. For 9516/9516 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2651 event pairs, 47 based on Foata normal form. 2/543 useless extension candidates. Maximal degree in co-relation 2677. Up to 421 conditions per place. [2024-06-14 12:41:10,075 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 99 selfloop transitions, 30 changer transitions 0/133 dead transitions. [2024-06-14 12:41:10,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 133 transitions, 1399 flow [2024-06-14 12:41:10,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:10,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:10,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 12:41:10,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-14 12:41:10,076 INFO L175 Difference]: Start difference. First operand has 150 places, 122 transitions, 1111 flow. Second operand 10 states and 133 transitions. [2024-06-14 12:41:10,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 133 transitions, 1399 flow [2024-06-14 12:41:10,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 133 transitions, 1276 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 12:41:10,096 INFO L231 Difference]: Finished difference. Result has 149 places, 122 transitions, 1052 flow [2024-06-14 12:41:10,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1052, PETRI_PLACES=149, PETRI_TRANSITIONS=122} [2024-06-14 12:41:10,097 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 117 predicate places. [2024-06-14 12:41:10,097 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 122 transitions, 1052 flow [2024-06-14 12:41:10,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:10,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:10,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:10,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:41:10,098 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)] === [2024-06-14 12:41:10,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:10,098 INFO L85 PathProgramCache]: Analyzing trace with hash -987221312, now seen corresponding path program 1 times [2024-06-14 12:41:10,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:10,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945262626] [2024-06-14 12:41:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:10,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:10,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:10,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945262626] [2024-06-14 12:41:10,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945262626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:10,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:10,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:10,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770613281] [2024-06-14 12:41:10,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:10,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:10,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:10,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:10,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:11,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:11,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 122 transitions, 1052 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:11,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:11,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:11,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:11,173 INFO L124 PetriNetUnfolderBase]: 299/601 cut-off events. [2024-06-14 12:41:11,173 INFO L125 PetriNetUnfolderBase]: For 11154/11154 co-relation queries the response was YES. [2024-06-14 12:41:11,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2961 conditions, 601 events. 299/601 cut-off events. For 11154/11154 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3007 event pairs, 43 based on Foata normal form. 2/599 useless extension candidates. Maximal degree in co-relation 2891. Up to 478 conditions per place. [2024-06-14 12:41:11,177 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 121 selfloop transitions, 22 changer transitions 0/147 dead transitions. [2024-06-14 12:41:11,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 147 transitions, 1525 flow [2024-06-14 12:41:11,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:11,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:11,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 12:41:11,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-14 12:41:11,205 INFO L175 Difference]: Start difference. First operand has 149 places, 122 transitions, 1052 flow. Second operand 10 states and 133 transitions. [2024-06-14 12:41:11,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 147 transitions, 1525 flow [2024-06-14 12:41:11,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 147 transitions, 1430 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:11,225 INFO L231 Difference]: Finished difference. Result has 153 places, 130 transitions, 1092 flow [2024-06-14 12:41:11,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1092, PETRI_PLACES=153, PETRI_TRANSITIONS=130} [2024-06-14 12:41:11,225 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 121 predicate places. [2024-06-14 12:41:11,225 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 130 transitions, 1092 flow [2024-06-14 12:41:11,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:11,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:11,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:11,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:41:11,226 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)] === [2024-06-14 12:41:11,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1777397292, now seen corresponding path program 2 times [2024-06-14 12:41:11,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:11,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787903237] [2024-06-14 12:41:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:11,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:11,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:11,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:11,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787903237] [2024-06-14 12:41:11,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787903237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:11,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:11,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:11,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270317070] [2024-06-14 12:41:11,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:11,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:11,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:11,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:11,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:11,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:11,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 130 transitions, 1092 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:11,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:11,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:11,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:12,104 INFO L124 PetriNetUnfolderBase]: 303/608 cut-off events. [2024-06-14 12:41:12,105 INFO L125 PetriNetUnfolderBase]: For 11791/11791 co-relation queries the response was YES. [2024-06-14 12:41:12,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 608 events. 303/608 cut-off events. For 11791/11791 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3069 event pairs, 25 based on Foata normal form. 2/605 useless extension candidates. Maximal degree in co-relation 2884. Up to 464 conditions per place. [2024-06-14 12:41:12,108 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 121 selfloop transitions, 17 changer transitions 0/142 dead transitions. [2024-06-14 12:41:12,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 142 transitions, 1400 flow [2024-06-14 12:41:12,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:12,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 12:41:12,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 12:41:12,109 INFO L175 Difference]: Start difference. First operand has 153 places, 130 transitions, 1092 flow. Second operand 8 states and 104 transitions. [2024-06-14 12:41:12,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 142 transitions, 1400 flow [2024-06-14 12:41:12,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 142 transitions, 1361 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 12:41:12,131 INFO L231 Difference]: Finished difference. Result has 157 places, 131 transitions, 1102 flow [2024-06-14 12:41:12,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1102, PETRI_PLACES=157, PETRI_TRANSITIONS=131} [2024-06-14 12:41:12,132 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 125 predicate places. [2024-06-14 12:41:12,132 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 131 transitions, 1102 flow [2024-06-14 12:41:12,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:12,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:12,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:12,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:41:12,132 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)] === [2024-06-14 12:41:12,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:12,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1875240816, now seen corresponding path program 3 times [2024-06-14 12:41:12,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:12,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36469878] [2024-06-14 12:41:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:12,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:12,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:12,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36469878] [2024-06-14 12:41:12,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36469878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:12,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:12,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:12,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751974045] [2024-06-14 12:41:12,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:12,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:12,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:12,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:12,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:12,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:12,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 131 transitions, 1102 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:12,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:12,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:12,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:12,999 INFO L124 PetriNetUnfolderBase]: 318/637 cut-off events. [2024-06-14 12:41:13,000 INFO L125 PetriNetUnfolderBase]: For 13058/13058 co-relation queries the response was YES. [2024-06-14 12:41:13,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3154 conditions, 637 events. 318/637 cut-off events. For 13058/13058 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3238 event pairs, 42 based on Foata normal form. 2/634 useless extension candidates. Maximal degree in co-relation 3079. Up to 428 conditions per place. [2024-06-14 12:41:13,004 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 106 selfloop transitions, 35 changer transitions 0/145 dead transitions. [2024-06-14 12:41:13,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 145 transitions, 1506 flow [2024-06-14 12:41:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:13,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:13,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-14 12:41:13,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 12:41:13,029 INFO L175 Difference]: Start difference. First operand has 157 places, 131 transitions, 1102 flow. Second operand 8 states and 112 transitions. [2024-06-14 12:41:13,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 145 transitions, 1506 flow [2024-06-14 12:41:13,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 145 transitions, 1469 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:13,054 INFO L231 Difference]: Finished difference. Result has 160 places, 134 transitions, 1175 flow [2024-06-14 12:41:13,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1175, PETRI_PLACES=160, PETRI_TRANSITIONS=134} [2024-06-14 12:41:13,055 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 128 predicate places. [2024-06-14 12:41:13,056 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 134 transitions, 1175 flow [2024-06-14 12:41:13,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:13,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:13,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:13,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:41:13,061 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)] === [2024-06-14 12:41:13,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:13,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1895662602, now seen corresponding path program 4 times [2024-06-14 12:41:13,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:13,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041609069] [2024-06-14 12:41:13,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:13,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:13,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:13,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:13,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041609069] [2024-06-14 12:41:13,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041609069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:13,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:13,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:13,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201262497] [2024-06-14 12:41:13,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:13,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:13,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:13,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:13,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:14,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:14,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 134 transitions, 1175 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:14,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:14,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:14,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:14,240 INFO L124 PetriNetUnfolderBase]: 330/661 cut-off events. [2024-06-14 12:41:14,240 INFO L125 PetriNetUnfolderBase]: For 16654/16654 co-relation queries the response was YES. [2024-06-14 12:41:14,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3343 conditions, 661 events. 330/661 cut-off events. For 16654/16654 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3392 event pairs, 56 based on Foata normal form. 6/662 useless extension candidates. Maximal degree in co-relation 3266. Up to 479 conditions per place. [2024-06-14 12:41:14,244 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 93 selfloop transitions, 48 changer transitions 0/145 dead transitions. [2024-06-14 12:41:14,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 145 transitions, 1506 flow [2024-06-14 12:41:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-14 12:41:14,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-14 12:41:14,246 INFO L175 Difference]: Start difference. First operand has 160 places, 134 transitions, 1175 flow. Second operand 8 states and 113 transitions. [2024-06-14 12:41:14,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 145 transitions, 1506 flow [2024-06-14 12:41:14,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 145 transitions, 1471 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-14 12:41:14,273 INFO L231 Difference]: Finished difference. Result has 165 places, 137 transitions, 1281 flow [2024-06-14 12:41:14,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1281, PETRI_PLACES=165, PETRI_TRANSITIONS=137} [2024-06-14 12:41:14,274 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 133 predicate places. [2024-06-14 12:41:14,274 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 137 transitions, 1281 flow [2024-06-14 12:41:14,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:14,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:14,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:14,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:41:14,275 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)] === [2024-06-14 12:41:14,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:14,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1895484972, now seen corresponding path program 5 times [2024-06-14 12:41:14,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:14,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555921704] [2024-06-14 12:41:14,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:14,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:15,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:15,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555921704] [2024-06-14 12:41:15,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555921704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:15,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:15,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:15,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894279758] [2024-06-14 12:41:15,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:15,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:15,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:15,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:15,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:15,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:15,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 137 transitions, 1281 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:15,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:15,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:15,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:15,393 INFO L124 PetriNetUnfolderBase]: 324/651 cut-off events. [2024-06-14 12:41:15,394 INFO L125 PetriNetUnfolderBase]: For 12577/12577 co-relation queries the response was YES. [2024-06-14 12:41:15,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3250 conditions, 651 events. 324/651 cut-off events. For 12577/12577 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3372 event pairs, 50 based on Foata normal form. 4/650 useless extension candidates. Maximal degree in co-relation 3172. Up to 484 conditions per place. [2024-06-14 12:41:15,398 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 103 selfloop transitions, 39 changer transitions 0/146 dead transitions. [2024-06-14 12:41:15,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 146 transitions, 1585 flow [2024-06-14 12:41:15,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:15,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-14 12:41:15,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-14 12:41:15,399 INFO L175 Difference]: Start difference. First operand has 165 places, 137 transitions, 1281 flow. Second operand 8 states and 113 transitions. [2024-06-14 12:41:15,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 146 transitions, 1585 flow [2024-06-14 12:41:15,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 146 transitions, 1485 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:15,421 INFO L231 Difference]: Finished difference. Result has 167 places, 137 transitions, 1264 flow [2024-06-14 12:41:15,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1264, PETRI_PLACES=167, PETRI_TRANSITIONS=137} [2024-06-14 12:41:15,421 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2024-06-14 12:41:15,421 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 137 transitions, 1264 flow [2024-06-14 12:41:15,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:15,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:15,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:15,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:41:15,422 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)] === [2024-06-14 12:41:15,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:15,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1581051742, now seen corresponding path program 6 times [2024-06-14 12:41:15,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:15,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941672657] [2024-06-14 12:41:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:15,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:16,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:16,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941672657] [2024-06-14 12:41:16,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941672657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:16,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:16,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:16,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458066496] [2024-06-14 12:41:16,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:16,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:16,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:16,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:16,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:16,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:16,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 137 transitions, 1264 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:16,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:16,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:16,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:16,628 INFO L124 PetriNetUnfolderBase]: 333/670 cut-off events. [2024-06-14 12:41:16,628 INFO L125 PetriNetUnfolderBase]: For 11839/11839 co-relation queries the response was YES. [2024-06-14 12:41:16,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3324 conditions, 670 events. 333/670 cut-off events. For 11839/11839 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3480 event pairs, 54 based on Foata normal form. 2/667 useless extension candidates. Maximal degree in co-relation 3245. Up to 485 conditions per place. [2024-06-14 12:41:16,633 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 102 selfloop transitions, 44 changer transitions 0/150 dead transitions. [2024-06-14 12:41:16,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 150 transitions, 1607 flow [2024-06-14 12:41:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:16,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:16,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-14 12:41:16,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-14 12:41:16,648 INFO L175 Difference]: Start difference. First operand has 167 places, 137 transitions, 1264 flow. Second operand 9 states and 123 transitions. [2024-06-14 12:41:16,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 150 transitions, 1607 flow [2024-06-14 12:41:16,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 150 transitions, 1537 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:16,686 INFO L231 Difference]: Finished difference. Result has 172 places, 140 transitions, 1323 flow [2024-06-14 12:41:16,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1323, PETRI_PLACES=172, PETRI_TRANSITIONS=140} [2024-06-14 12:41:16,687 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 140 predicate places. [2024-06-14 12:41:16,687 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 140 transitions, 1323 flow [2024-06-14 12:41:16,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:16,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:16,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:16,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:41:16,687 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)] === [2024-06-14 12:41:16,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:16,688 INFO L85 PathProgramCache]: Analyzing trace with hash 302336452, now seen corresponding path program 7 times [2024-06-14 12:41:16,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:16,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954478470] [2024-06-14 12:41:16,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:16,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:17,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:17,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954478470] [2024-06-14 12:41:17,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954478470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:17,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:17,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:17,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786624832] [2024-06-14 12:41:17,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:17,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:17,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:17,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:17,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:17,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:17,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 140 transitions, 1323 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:17,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:17,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:17,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:17,676 INFO L124 PetriNetUnfolderBase]: 337/680 cut-off events. [2024-06-14 12:41:17,676 INFO L125 PetriNetUnfolderBase]: For 12517/12517 co-relation queries the response was YES. [2024-06-14 12:41:17,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3417 conditions, 680 events. 337/680 cut-off events. For 12517/12517 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3557 event pairs, 76 based on Foata normal form. 2/679 useless extension candidates. Maximal degree in co-relation 3336. Up to 525 conditions per place. [2024-06-14 12:41:17,680 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 112 selfloop transitions, 36 changer transitions 0/152 dead transitions. [2024-06-14 12:41:17,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 152 transitions, 1663 flow [2024-06-14 12:41:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-14 12:41:17,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-14 12:41:17,681 INFO L175 Difference]: Start difference. First operand has 172 places, 140 transitions, 1323 flow. Second operand 9 states and 123 transitions. [2024-06-14 12:41:17,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 152 transitions, 1663 flow [2024-06-14 12:41:17,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 152 transitions, 1580 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:17,708 INFO L231 Difference]: Finished difference. Result has 175 places, 141 transitions, 1332 flow [2024-06-14 12:41:17,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1332, PETRI_PLACES=175, PETRI_TRANSITIONS=141} [2024-06-14 12:41:17,709 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 143 predicate places. [2024-06-14 12:41:17,709 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 141 transitions, 1332 flow [2024-06-14 12:41:17,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:17,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:17,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:17,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:41:17,710 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)] === [2024-06-14 12:41:17,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:17,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1585635712, now seen corresponding path program 8 times [2024-06-14 12:41:17,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:17,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096255868] [2024-06-14 12:41:17,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:17,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:17,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:18,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:18,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096255868] [2024-06-14 12:41:18,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096255868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:18,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:18,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:18,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026328740] [2024-06-14 12:41:18,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:18,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:18,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:18,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:18,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:18,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 141 transitions, 1332 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:18,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:18,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:18,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:18,840 INFO L124 PetriNetUnfolderBase]: 341/686 cut-off events. [2024-06-14 12:41:18,841 INFO L125 PetriNetUnfolderBase]: For 13200/13200 co-relation queries the response was YES. [2024-06-14 12:41:18,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3453 conditions, 686 events. 341/686 cut-off events. For 13200/13200 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3592 event pairs, 54 based on Foata normal form. 2/683 useless extension candidates. Maximal degree in co-relation 3373. Up to 426 conditions per place. [2024-06-14 12:41:18,845 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 103 selfloop transitions, 47 changer transitions 0/154 dead transitions. [2024-06-14 12:41:18,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 154 transitions, 1754 flow [2024-06-14 12:41:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:18,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-14 12:41:18,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4208754208754209 [2024-06-14 12:41:18,846 INFO L175 Difference]: Start difference. First operand has 175 places, 141 transitions, 1332 flow. Second operand 9 states and 125 transitions. [2024-06-14 12:41:18,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 154 transitions, 1754 flow [2024-06-14 12:41:18,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 154 transitions, 1672 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:18,875 INFO L231 Difference]: Finished difference. Result has 178 places, 142 transitions, 1364 flow [2024-06-14 12:41:18,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1250, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1364, PETRI_PLACES=178, PETRI_TRANSITIONS=142} [2024-06-14 12:41:18,876 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 146 predicate places. [2024-06-14 12:41:18,876 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 142 transitions, 1364 flow [2024-06-14 12:41:18,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:18,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:18,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:18,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:41:18,877 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)] === [2024-06-14 12:41:18,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:18,877 INFO L85 PathProgramCache]: Analyzing trace with hash 538993056, now seen corresponding path program 1 times [2024-06-14 12:41:18,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:18,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625977637] [2024-06-14 12:41:18,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:18,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:19,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:19,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625977637] [2024-06-14 12:41:19,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625977637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:19,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:19,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:19,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115840212] [2024-06-14 12:41:19,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:19,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:19,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:19,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:19,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:19,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:19,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 142 transitions, 1364 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:19,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:19,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:19,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:20,206 INFO L124 PetriNetUnfolderBase]: 344/693 cut-off events. [2024-06-14 12:41:20,207 INFO L125 PetriNetUnfolderBase]: For 13104/13104 co-relation queries the response was YES. [2024-06-14 12:41:20,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3518 conditions, 693 events. 344/693 cut-off events. For 13104/13104 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3660 event pairs, 58 based on Foata normal form. 1/689 useless extension candidates. Maximal degree in co-relation 3438. Up to 484 conditions per place. [2024-06-14 12:41:20,211 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 89 selfloop transitions, 60 changer transitions 0/153 dead transitions. [2024-06-14 12:41:20,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 153 transitions, 1710 flow [2024-06-14 12:41:20,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:20,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:20,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-14 12:41:20,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-14 12:41:20,212 INFO L175 Difference]: Start difference. First operand has 178 places, 142 transitions, 1364 flow. Second operand 10 states and 139 transitions. [2024-06-14 12:41:20,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 153 transitions, 1710 flow [2024-06-14 12:41:20,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 153 transitions, 1571 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:20,246 INFO L231 Difference]: Finished difference. Result has 179 places, 144 transitions, 1382 flow [2024-06-14 12:41:20,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1382, PETRI_PLACES=179, PETRI_TRANSITIONS=144} [2024-06-14 12:41:20,247 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 147 predicate places. [2024-06-14 12:41:20,247 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 144 transitions, 1382 flow [2024-06-14 12:41:20,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:20,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:20,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:20,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:41:20,248 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)] === [2024-06-14 12:41:20,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:20,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1857303518, now seen corresponding path program 9 times [2024-06-14 12:41:20,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:20,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499630819] [2024-06-14 12:41:20,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:20,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:21,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:21,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499630819] [2024-06-14 12:41:21,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499630819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:21,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:21,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:21,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914023970] [2024-06-14 12:41:21,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:21,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:21,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:21,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:21,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:21,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:21,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 144 transitions, 1382 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:21,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:21,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:21,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:21,410 INFO L124 PetriNetUnfolderBase]: 348/703 cut-off events. [2024-06-14 12:41:21,410 INFO L125 PetriNetUnfolderBase]: For 14310/14310 co-relation queries the response was YES. [2024-06-14 12:41:21,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3477 conditions, 703 events. 348/703 cut-off events. For 14310/14310 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3730 event pairs, 80 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 3399. Up to 560 conditions per place. [2024-06-14 12:41:21,414 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 116 selfloop transitions, 36 changer transitions 0/156 dead transitions. [2024-06-14 12:41:21,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 156 transitions, 1727 flow [2024-06-14 12:41:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:21,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:21,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 12:41:21,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-14 12:41:21,415 INFO L175 Difference]: Start difference. First operand has 179 places, 144 transitions, 1382 flow. Second operand 10 states and 134 transitions. [2024-06-14 12:41:21,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 156 transitions, 1727 flow [2024-06-14 12:41:21,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 156 transitions, 1584 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:21,450 INFO L231 Difference]: Finished difference. Result has 181 places, 145 transitions, 1328 flow [2024-06-14 12:41:21,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1328, PETRI_PLACES=181, PETRI_TRANSITIONS=145} [2024-06-14 12:41:21,450 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 149 predicate places. [2024-06-14 12:41:21,450 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 145 transitions, 1328 flow [2024-06-14 12:41:21,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:21,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:21,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:21,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:41:21,451 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)] === [2024-06-14 12:41:21,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:21,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1805678736, now seen corresponding path program 10 times [2024-06-14 12:41:21,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:21,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621966036] [2024-06-14 12:41:21,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:21,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:22,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:22,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:22,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621966036] [2024-06-14 12:41:22,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621966036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:22,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:22,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:22,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324373107] [2024-06-14 12:41:22,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:22,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:22,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:22,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:22,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:22,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:22,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 145 transitions, 1328 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:22,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:22,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:22,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:22,723 INFO L124 PetriNetUnfolderBase]: 352/711 cut-off events. [2024-06-14 12:41:22,723 INFO L125 PetriNetUnfolderBase]: For 14858/14858 co-relation queries the response was YES. [2024-06-14 12:41:22,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3452 conditions, 711 events. 352/711 cut-off events. For 14858/14858 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3768 event pairs, 78 based on Foata normal form. 2/710 useless extension candidates. Maximal degree in co-relation 3373. Up to 539 conditions per place. [2024-06-14 12:41:22,728 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 119 selfloop transitions, 35 changer transitions 0/158 dead transitions. [2024-06-14 12:41:22,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 158 transitions, 1767 flow [2024-06-14 12:41:22,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:22,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-14 12:41:22,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 12:41:22,729 INFO L175 Difference]: Start difference. First operand has 181 places, 145 transitions, 1328 flow. Second operand 9 states and 126 transitions. [2024-06-14 12:41:22,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 158 transitions, 1767 flow [2024-06-14 12:41:22,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 158 transitions, 1649 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:22,767 INFO L231 Difference]: Finished difference. Result has 180 places, 146 transitions, 1297 flow [2024-06-14 12:41:22,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1297, PETRI_PLACES=180, PETRI_TRANSITIONS=146} [2024-06-14 12:41:22,768 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2024-06-14 12:41:22,768 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 146 transitions, 1297 flow [2024-06-14 12:41:22,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:22,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:22,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:22,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:41:22,769 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)] === [2024-06-14 12:41:22,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:22,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1805501106, now seen corresponding path program 11 times [2024-06-14 12:41:22,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:22,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124665279] [2024-06-14 12:41:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:22,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:23,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:23,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124665279] [2024-06-14 12:41:23,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124665279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:23,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:23,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:23,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235538964] [2024-06-14 12:41:23,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:23,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:23,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:23,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:23,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:23,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 146 transitions, 1297 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:23,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:23,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:23,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:23,879 INFO L124 PetriNetUnfolderBase]: 359/724 cut-off events. [2024-06-14 12:41:23,880 INFO L125 PetriNetUnfolderBase]: For 15544/15544 co-relation queries the response was YES. [2024-06-14 12:41:23,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3508 conditions, 724 events. 359/724 cut-off events. For 15544/15544 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3862 event pairs, 80 based on Foata normal form. 2/723 useless extension candidates. Maximal degree in co-relation 3428. Up to 580 conditions per place. [2024-06-14 12:41:23,883 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 121 selfloop transitions, 34 changer transitions 0/159 dead transitions. [2024-06-14 12:41:23,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 159 transitions, 1671 flow [2024-06-14 12:41:23,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:23,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:23,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-14 12:41:23,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-14 12:41:23,885 INFO L175 Difference]: Start difference. First operand has 180 places, 146 transitions, 1297 flow. Second operand 9 states and 123 transitions. [2024-06-14 12:41:23,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 159 transitions, 1671 flow [2024-06-14 12:41:23,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 159 transitions, 1567 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:41:23,924 INFO L231 Difference]: Finished difference. Result has 182 places, 149 transitions, 1303 flow [2024-06-14 12:41:23,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1303, PETRI_PLACES=182, PETRI_TRANSITIONS=149} [2024-06-14 12:41:23,924 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 150 predicate places. [2024-06-14 12:41:23,924 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 149 transitions, 1303 flow [2024-06-14 12:41:23,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:23,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:23,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:23,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:41:23,925 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)] === [2024-06-14 12:41:23,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:23,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1420860320, now seen corresponding path program 12 times [2024-06-14 12:41:23,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:23,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515794058] [2024-06-14 12:41:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:23,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:23,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:24,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:24,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515794058] [2024-06-14 12:41:24,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515794058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:24,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:24,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:24,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357177793] [2024-06-14 12:41:24,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:24,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:24,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:24,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:24,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:24,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:24,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 149 transitions, 1303 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:24,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:24,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:24,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:25,004 INFO L124 PetriNetUnfolderBase]: 356/717 cut-off events. [2024-06-14 12:41:25,004 INFO L125 PetriNetUnfolderBase]: For 14049/14049 co-relation queries the response was YES. [2024-06-14 12:41:25,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 717 events. 356/717 cut-off events. For 14049/14049 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3826 event pairs, 59 based on Foata normal form. 2/714 useless extension candidates. Maximal degree in co-relation 3281. Up to 543 conditions per place. [2024-06-14 12:41:25,009 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 111 selfloop transitions, 43 changer transitions 0/158 dead transitions. [2024-06-14 12:41:25,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 158 transitions, 1631 flow [2024-06-14 12:41:25,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:25,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-14 12:41:25,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-14 12:41:25,010 INFO L175 Difference]: Start difference. First operand has 182 places, 149 transitions, 1303 flow. Second operand 9 states and 124 transitions. [2024-06-14 12:41:25,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 158 transitions, 1631 flow [2024-06-14 12:41:25,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 158 transitions, 1549 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:25,045 INFO L231 Difference]: Finished difference. Result has 185 places, 149 transitions, 1311 flow [2024-06-14 12:41:25,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1311, PETRI_PLACES=185, PETRI_TRANSITIONS=149} [2024-06-14 12:41:25,046 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 153 predicate places. [2024-06-14 12:41:25,046 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 149 transitions, 1311 flow [2024-06-14 12:41:25,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 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) [2024-06-14 12:41:25,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:25,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:25,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:41:25,046 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)] === [2024-06-14 12:41:25,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:25,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1648754526, now seen corresponding path program 2 times [2024-06-14 12:41:25,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:25,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028898475] [2024-06-14 12:41:25,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:25,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:26,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:26,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028898475] [2024-06-14 12:41:26,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028898475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:26,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:26,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:26,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452305015] [2024-06-14 12:41:26,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:26,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:26,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:26,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:26,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:26,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:26,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 149 transitions, 1311 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:26,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:26,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:26,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:26,474 INFO L124 PetriNetUnfolderBase]: 362/729 cut-off events. [2024-06-14 12:41:26,474 INFO L125 PetriNetUnfolderBase]: For 13534/13534 co-relation queries the response was YES. [2024-06-14 12:41:26,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3424 conditions, 729 events. 362/729 cut-off events. For 13534/13534 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3896 event pairs, 79 based on Foata normal form. 1/727 useless extension candidates. Maximal degree in co-relation 3342. Up to 560 conditions per place. [2024-06-14 12:41:26,479 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 116 selfloop transitions, 43 changer transitions 0/163 dead transitions. [2024-06-14 12:41:26,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 163 transitions, 1701 flow [2024-06-14 12:41:26,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:26,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:26,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-14 12:41:26,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-14 12:41:26,483 INFO L175 Difference]: Start difference. First operand has 185 places, 149 transitions, 1311 flow. Second operand 10 states and 137 transitions. [2024-06-14 12:41:26,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 163 transitions, 1701 flow [2024-06-14 12:41:26,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 163 transitions, 1551 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:26,521 INFO L231 Difference]: Finished difference. Result has 185 places, 153 transitions, 1300 flow [2024-06-14 12:41:26,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1300, PETRI_PLACES=185, PETRI_TRANSITIONS=153} [2024-06-14 12:41:26,522 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 153 predicate places. [2024-06-14 12:41:26,522 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 153 transitions, 1300 flow [2024-06-14 12:41:26,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:26,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:26,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:26,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:41:26,528 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)] === [2024-06-14 12:41:26,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:26,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1420853376, now seen corresponding path program 3 times [2024-06-14 12:41:26,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:26,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891984339] [2024-06-14 12:41:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:26,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:27,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:27,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891984339] [2024-06-14 12:41:27,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891984339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:27,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:27,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:27,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637750201] [2024-06-14 12:41:27,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:27,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:27,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:27,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:27,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:27,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:27,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 153 transitions, 1300 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:27,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:27,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:27,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:27,902 INFO L124 PetriNetUnfolderBase]: 368/741 cut-off events. [2024-06-14 12:41:27,903 INFO L125 PetriNetUnfolderBase]: For 14028/14028 co-relation queries the response was YES. [2024-06-14 12:41:27,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3446 conditions, 741 events. 368/741 cut-off events. For 14028/14028 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3984 event pairs, 59 based on Foata normal form. 1/737 useless extension candidates. Maximal degree in co-relation 3363. Up to 532 conditions per place. [2024-06-14 12:41:27,907 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 109 selfloop transitions, 53 changer transitions 0/166 dead transitions. [2024-06-14 12:41:27,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 166 transitions, 1696 flow [2024-06-14 12:41:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:27,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:27,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-14 12:41:27,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-14 12:41:27,908 INFO L175 Difference]: Start difference. First operand has 185 places, 153 transitions, 1300 flow. Second operand 10 states and 139 transitions. [2024-06-14 12:41:27,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 166 transitions, 1696 flow [2024-06-14 12:41:27,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 166 transitions, 1577 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 12:41:27,942 INFO L231 Difference]: Finished difference. Result has 188 places, 157 transitions, 1348 flow [2024-06-14 12:41:27,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1348, PETRI_PLACES=188, PETRI_TRANSITIONS=157} [2024-06-14 12:41:27,942 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 156 predicate places. [2024-06-14 12:41:27,942 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 157 transitions, 1348 flow [2024-06-14 12:41:27,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:27,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:27,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:27,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:41:27,943 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)] === [2024-06-14 12:41:27,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:27,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1569022132, now seen corresponding path program 4 times [2024-06-14 12:41:27,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:27,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858050463] [2024-06-14 12:41:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:27,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:28,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:28,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:28,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858050463] [2024-06-14 12:41:28,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858050463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:28,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:28,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:28,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181804724] [2024-06-14 12:41:28,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:28,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:28,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:28,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:28,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:29,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:29,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 157 transitions, 1348 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:29,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:29,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:29,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:29,328 INFO L124 PetriNetUnfolderBase]: 376/758 cut-off events. [2024-06-14 12:41:29,328 INFO L125 PetriNetUnfolderBase]: For 16003/16003 co-relation queries the response was YES. [2024-06-14 12:41:29,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3610 conditions, 758 events. 376/758 cut-off events. For 16003/16003 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4090 event pairs, 79 based on Foata normal form. 1/756 useless extension candidates. Maximal degree in co-relation 3527. Up to 569 conditions per place. [2024-06-14 12:41:29,333 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 117 selfloop transitions, 52 changer transitions 0/173 dead transitions. [2024-06-14 12:41:29,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 173 transitions, 1890 flow [2024-06-14 12:41:29,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-14 12:41:29,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-06-14 12:41:29,334 INFO L175 Difference]: Start difference. First operand has 188 places, 157 transitions, 1348 flow. Second operand 11 states and 150 transitions. [2024-06-14 12:41:29,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 173 transitions, 1890 flow [2024-06-14 12:41:29,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 173 transitions, 1766 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:29,406 INFO L231 Difference]: Finished difference. Result has 193 places, 161 transitions, 1413 flow [2024-06-14 12:41:29,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1413, PETRI_PLACES=193, PETRI_TRANSITIONS=161} [2024-06-14 12:41:29,406 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 161 predicate places. [2024-06-14 12:41:29,407 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 161 transitions, 1413 flow [2024-06-14 12:41:29,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:29,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:29,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:29,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:41:29,407 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)] === [2024-06-14 12:41:29,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:29,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1577362372, now seen corresponding path program 5 times [2024-06-14 12:41:29,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:29,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961435500] [2024-06-14 12:41:29,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:29,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:30,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:30,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:30,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961435500] [2024-06-14 12:41:30,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961435500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:30,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:30,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:30,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432822677] [2024-06-14 12:41:30,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:30,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:30,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:30,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:30,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:30,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:30,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 161 transitions, 1413 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:30,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:30,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:30,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:30,799 INFO L124 PetriNetUnfolderBase]: 374/753 cut-off events. [2024-06-14 12:41:30,800 INFO L125 PetriNetUnfolderBase]: For 15430/15430 co-relation queries the response was YES. [2024-06-14 12:41:30,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3547 conditions, 753 events. 374/753 cut-off events. For 15430/15430 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4089 event pairs, 59 based on Foata normal form. 1/749 useless extension candidates. Maximal degree in co-relation 3463. Up to 542 conditions per place. [2024-06-14 12:41:30,805 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 112 selfloop transitions, 54 changer transitions 0/170 dead transitions. [2024-06-14 12:41:30,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 170 transitions, 1765 flow [2024-06-14 12:41:30,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:30,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-14 12:41:30,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-14 12:41:30,807 INFO L175 Difference]: Start difference. First operand has 193 places, 161 transitions, 1413 flow. Second operand 10 states and 138 transitions. [2024-06-14 12:41:30,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 170 transitions, 1765 flow [2024-06-14 12:41:30,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 170 transitions, 1636 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:30,854 INFO L231 Difference]: Finished difference. Result has 195 places, 161 transitions, 1397 flow [2024-06-14 12:41:30,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1397, PETRI_PLACES=195, PETRI_TRANSITIONS=161} [2024-06-14 12:41:30,854 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 163 predicate places. [2024-06-14 12:41:30,854 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 161 transitions, 1397 flow [2024-06-14 12:41:30,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:30,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:30,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:30,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:41:30,855 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)] === [2024-06-14 12:41:30,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:30,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1865881342, now seen corresponding path program 6 times [2024-06-14 12:41:30,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:30,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512171866] [2024-06-14 12:41:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:30,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:31,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:31,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512171866] [2024-06-14 12:41:31,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512171866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:31,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:31,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:31,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885768872] [2024-06-14 12:41:31,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:31,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:31,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:31,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:31,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:32,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:32,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 161 transitions, 1397 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:32,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:32,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:32,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:32,393 INFO L124 PetriNetUnfolderBase]: 380/765 cut-off events. [2024-06-14 12:41:32,394 INFO L125 PetriNetUnfolderBase]: For 16001/16001 co-relation queries the response was YES. [2024-06-14 12:41:32,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3660 conditions, 765 events. 380/765 cut-off events. For 16001/16001 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4162 event pairs, 59 based on Foata normal form. 1/761 useless extension candidates. Maximal degree in co-relation 3574. Up to 543 conditions per place. [2024-06-14 12:41:32,399 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 106 selfloop transitions, 66 changer transitions 0/176 dead transitions. [2024-06-14 12:41:32,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 176 transitions, 1829 flow [2024-06-14 12:41:32,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:41:32,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:41:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-14 12:41:32,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-14 12:41:32,400 INFO L175 Difference]: Start difference. First operand has 195 places, 161 transitions, 1397 flow. Second operand 12 states and 163 transitions. [2024-06-14 12:41:32,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 176 transitions, 1829 flow [2024-06-14 12:41:32,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 176 transitions, 1698 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:32,443 INFO L231 Difference]: Finished difference. Result has 198 places, 165 transitions, 1471 flow [2024-06-14 12:41:32,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1270, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1471, PETRI_PLACES=198, PETRI_TRANSITIONS=165} [2024-06-14 12:41:32,444 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 166 predicate places. [2024-06-14 12:41:32,444 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 165 transitions, 1471 flow [2024-06-14 12:41:32,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:32,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:32,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:32,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:41:32,445 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)] === [2024-06-14 12:41:32,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:32,445 INFO L85 PathProgramCache]: Analyzing trace with hash -264417544, now seen corresponding path program 7 times [2024-06-14 12:41:32,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:32,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700609167] [2024-06-14 12:41:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:32,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:33,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:33,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:33,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700609167] [2024-06-14 12:41:33,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700609167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:33,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:33,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:33,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104532594] [2024-06-14 12:41:33,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:33,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:33,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:33,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:33,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:33,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:33,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 165 transitions, 1471 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:33,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:33,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:33,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:33,857 INFO L124 PetriNetUnfolderBase]: 383/772 cut-off events. [2024-06-14 12:41:33,857 INFO L125 PetriNetUnfolderBase]: For 16812/16812 co-relation queries the response was YES. [2024-06-14 12:41:33,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3758 conditions, 772 events. 383/772 cut-off events. For 16812/16812 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4218 event pairs, 59 based on Foata normal form. 1/768 useless extension candidates. Maximal degree in co-relation 3671. Up to 553 conditions per place. [2024-06-14 12:41:33,862 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 109 selfloop transitions, 64 changer transitions 0/177 dead transitions. [2024-06-14 12:41:33,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 177 transitions, 1885 flow [2024-06-14 12:41:33,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:33,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:41:33,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-14 12:41:33,864 INFO L175 Difference]: Start difference. First operand has 198 places, 165 transitions, 1471 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:41:33,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 177 transitions, 1885 flow [2024-06-14 12:41:33,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 177 transitions, 1720 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:33,910 INFO L231 Difference]: Finished difference. Result has 200 places, 167 transitions, 1489 flow [2024-06-14 12:41:33,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1489, PETRI_PLACES=200, PETRI_TRANSITIONS=167} [2024-06-14 12:41:33,911 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 168 predicate places. [2024-06-14 12:41:33,911 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 167 transitions, 1489 flow [2024-06-14 12:41:33,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:33,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:33,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:33,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:41:33,911 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)] === [2024-06-14 12:41:33,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:33,913 INFO L85 PathProgramCache]: Analyzing trace with hash -988913878, now seen corresponding path program 8 times [2024-06-14 12:41:33,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:33,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835208261] [2024-06-14 12:41:33,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:33,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:35,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:35,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:35,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835208261] [2024-06-14 12:41:35,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835208261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:35,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:35,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:35,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131392094] [2024-06-14 12:41:35,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:35,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:35,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:35,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:35,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:35,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:35,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 167 transitions, 1489 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:35,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:35,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:35,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:35,521 INFO L124 PetriNetUnfolderBase]: 381/771 cut-off events. [2024-06-14 12:41:35,522 INFO L125 PetriNetUnfolderBase]: For 15932/15932 co-relation queries the response was YES. [2024-06-14 12:41:35,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3677 conditions, 771 events. 381/771 cut-off events. For 15932/15932 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4221 event pairs, 79 based on Foata normal form. 1/769 useless extension candidates. Maximal degree in co-relation 3589. Up to 572 conditions per place. [2024-06-14 12:41:35,526 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 119 selfloop transitions, 58 changer transitions 0/181 dead transitions. [2024-06-14 12:41:35,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 181 transitions, 1925 flow [2024-06-14 12:41:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:41:35,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:41:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-14 12:41:35,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-14 12:41:35,527 INFO L175 Difference]: Start difference. First operand has 200 places, 167 transitions, 1489 flow. Second operand 12 states and 158 transitions. [2024-06-14 12:41:35,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 181 transitions, 1925 flow [2024-06-14 12:41:35,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 181 transitions, 1758 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:35,559 INFO L231 Difference]: Finished difference. Result has 203 places, 169 transitions, 1500 flow [2024-06-14 12:41:35,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1500, PETRI_PLACES=203, PETRI_TRANSITIONS=169} [2024-06-14 12:41:35,560 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2024-06-14 12:41:35,560 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 169 transitions, 1500 flow [2024-06-14 12:41:35,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:35,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:35,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:35,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:41:35,560 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)] === [2024-06-14 12:41:35,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:35,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1848301519, now seen corresponding path program 1 times [2024-06-14 12:41:35,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:35,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239661003] [2024-06-14 12:41:35,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:35,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:36,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:36,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:36,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239661003] [2024-06-14 12:41:36,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239661003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:36,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:36,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:36,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539400298] [2024-06-14 12:41:36,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:36,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:36,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:36,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:36,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:36,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:36,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 169 transitions, 1500 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:36,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:36,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:36,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:36,532 INFO L124 PetriNetUnfolderBase]: 392/790 cut-off events. [2024-06-14 12:41:36,532 INFO L125 PetriNetUnfolderBase]: For 20476/20476 co-relation queries the response was YES. [2024-06-14 12:41:36,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3820 conditions, 790 events. 392/790 cut-off events. For 20476/20476 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4332 event pairs, 60 based on Foata normal form. 2/787 useless extension candidates. Maximal degree in co-relation 3731. Up to 524 conditions per place. [2024-06-14 12:41:36,538 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 115 selfloop transitions, 63 changer transitions 0/182 dead transitions. [2024-06-14 12:41:36,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 182 transitions, 1998 flow [2024-06-14 12:41:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:36,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-14 12:41:36,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43097643097643096 [2024-06-14 12:41:36,541 INFO L175 Difference]: Start difference. First operand has 203 places, 169 transitions, 1500 flow. Second operand 9 states and 128 transitions. [2024-06-14 12:41:36,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 182 transitions, 1998 flow [2024-06-14 12:41:36,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 182 transitions, 1838 flow, removed 25 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:36,589 INFO L231 Difference]: Finished difference. Result has 202 places, 171 transitions, 1489 flow [2024-06-14 12:41:36,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1489, PETRI_PLACES=202, PETRI_TRANSITIONS=171} [2024-06-14 12:41:36,591 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 170 predicate places. [2024-06-14 12:41:36,591 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 171 transitions, 1489 flow [2024-06-14 12:41:36,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:36,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:36,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:36,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:41:36,591 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)] === [2024-06-14 12:41:36,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:36,592 INFO L85 PathProgramCache]: Analyzing trace with hash -735257901, now seen corresponding path program 2 times [2024-06-14 12:41:36,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:36,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832422299] [2024-06-14 12:41:36,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:36,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:37,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:37,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832422299] [2024-06-14 12:41:37,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832422299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:37,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:37,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:37,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830677734] [2024-06-14 12:41:37,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:37,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:37,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:37,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:37,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:37,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:37,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 171 transitions, 1489 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:37,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:37,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:37,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:37,680 INFO L124 PetriNetUnfolderBase]: 404/818 cut-off events. [2024-06-14 12:41:37,681 INFO L125 PetriNetUnfolderBase]: For 28046/28046 co-relation queries the response was YES. [2024-06-14 12:41:37,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3917 conditions, 818 events. 404/818 cut-off events. For 28046/28046 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4506 event pairs, 52 based on Foata normal form. 8/821 useless extension candidates. Maximal degree in co-relation 3827. Up to 630 conditions per place. [2024-06-14 12:41:37,686 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 150 selfloop transitions, 7 changer transitions 26/187 dead transitions. [2024-06-14 12:41:37,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 187 transitions, 1917 flow [2024-06-14 12:41:37,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:37,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 12:41:37,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 12:41:37,702 INFO L175 Difference]: Start difference. First operand has 202 places, 171 transitions, 1489 flow. Second operand 9 states and 117 transitions. [2024-06-14 12:41:37,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 187 transitions, 1917 flow [2024-06-14 12:41:37,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 187 transitions, 1833 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:37,757 INFO L231 Difference]: Finished difference. Result has 206 places, 160 transitions, 1328 flow [2024-06-14 12:41:37,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1328, PETRI_PLACES=206, PETRI_TRANSITIONS=160} [2024-06-14 12:41:37,758 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 174 predicate places. [2024-06-14 12:41:37,758 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 160 transitions, 1328 flow [2024-06-14 12:41:37,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:37,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:37,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:37,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:41:37,759 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)] === [2024-06-14 12:41:37,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:37,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1369507117, now seen corresponding path program 3 times [2024-06-14 12:41:37,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:37,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857529204] [2024-06-14 12:41:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:38,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:38,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:38,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857529204] [2024-06-14 12:41:38,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857529204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:38,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:38,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:38,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374233686] [2024-06-14 12:41:38,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:38,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:38,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:38,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:38,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:38,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:38,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 160 transitions, 1328 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:38,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:38,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:38,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:39,021 INFO L124 PetriNetUnfolderBase]: 390/802 cut-off events. [2024-06-14 12:41:39,022 INFO L125 PetriNetUnfolderBase]: For 39971/39971 co-relation queries the response was YES. [2024-06-14 12:41:39,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4285 conditions, 802 events. 390/802 cut-off events. For 39971/39971 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4396 event pairs, 61 based on Foata normal form. 8/807 useless extension candidates. Maximal degree in co-relation 4207. Up to 447 conditions per place. [2024-06-14 12:41:39,027 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 118 selfloop transitions, 43 changer transitions 12/177 dead transitions. [2024-06-14 12:41:39,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 177 transitions, 1893 flow [2024-06-14 12:41:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-14 12:41:39,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44107744107744107 [2024-06-14 12:41:39,028 INFO L175 Difference]: Start difference. First operand has 206 places, 160 transitions, 1328 flow. Second operand 9 states and 131 transitions. [2024-06-14 12:41:39,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 177 transitions, 1893 flow [2024-06-14 12:41:39,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 177 transitions, 1853 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:39,086 INFO L231 Difference]: Finished difference. Result has 193 places, 155 transitions, 1335 flow [2024-06-14 12:41:39,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1335, PETRI_PLACES=193, PETRI_TRANSITIONS=155} [2024-06-14 12:41:39,087 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 161 predicate places. [2024-06-14 12:41:39,087 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 155 transitions, 1335 flow [2024-06-14 12:41:39,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:39,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:39,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:39,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:41:39,088 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)] === [2024-06-14 12:41:39,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:39,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1511610187, now seen corresponding path program 4 times [2024-06-14 12:41:39,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:39,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637960582] [2024-06-14 12:41:39,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:39,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:40,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:40,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637960582] [2024-06-14 12:41:40,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637960582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:40,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:40,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:40,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101243247] [2024-06-14 12:41:40,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:40,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:40,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:40,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:40,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:40,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:40,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 155 transitions, 1335 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:40,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:40,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:40,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:40,448 INFO L124 PetriNetUnfolderBase]: 362/744 cut-off events. [2024-06-14 12:41:40,449 INFO L125 PetriNetUnfolderBase]: For 27551/27551 co-relation queries the response was YES. [2024-06-14 12:41:40,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4060 conditions, 744 events. 362/744 cut-off events. For 27551/27551 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4000 event pairs, 34 based on Foata normal form. 2/743 useless extension candidates. Maximal degree in co-relation 3987. Up to 275 conditions per place. [2024-06-14 12:41:40,454 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 112 selfloop transitions, 51 changer transitions 0/167 dead transitions. [2024-06-14 12:41:40,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 167 transitions, 1791 flow [2024-06-14 12:41:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:40,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 116 transitions. [2024-06-14 12:41:40,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-14 12:41:40,455 INFO L175 Difference]: Start difference. First operand has 193 places, 155 transitions, 1335 flow. Second operand 9 states and 116 transitions. [2024-06-14 12:41:40,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 167 transitions, 1791 flow [2024-06-14 12:41:40,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 167 transitions, 1693 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:40,500 INFO L231 Difference]: Finished difference. Result has 189 places, 156 transitions, 1359 flow [2024-06-14 12:41:40,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1359, PETRI_PLACES=189, PETRI_TRANSITIONS=156} [2024-06-14 12:41:40,500 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 157 predicate places. [2024-06-14 12:41:40,500 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 156 transitions, 1359 flow [2024-06-14 12:41:40,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:40,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:40,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:40,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:41:40,501 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)] === [2024-06-14 12:41:40,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:40,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1363793197, now seen corresponding path program 5 times [2024-06-14 12:41:40,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:40,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205678244] [2024-06-14 12:41:40,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:40,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:41,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:41,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:41,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205678244] [2024-06-14 12:41:41,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205678244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:41,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:41,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:41,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323946821] [2024-06-14 12:41:41,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:41,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:41,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:41,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:41,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:41,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:41,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 156 transitions, 1359 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:41,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:41,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:41,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:41,783 INFO L124 PetriNetUnfolderBase]: 333/681 cut-off events. [2024-06-14 12:41:41,783 INFO L125 PetriNetUnfolderBase]: For 14341/14341 co-relation queries the response was YES. [2024-06-14 12:41:41,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3308 conditions, 681 events. 333/681 cut-off events. For 14341/14341 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3619 event pairs, 47 based on Foata normal form. 2/680 useless extension candidates. Maximal degree in co-relation 3237. Up to 462 conditions per place. [2024-06-14 12:41:41,787 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 103 selfloop transitions, 56 changer transitions 0/163 dead transitions. [2024-06-14 12:41:41,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 163 transitions, 1691 flow [2024-06-14 12:41:41,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:41,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:41,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-14 12:41:41,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-14 12:41:41,788 INFO L175 Difference]: Start difference. First operand has 189 places, 156 transitions, 1359 flow. Second operand 9 states and 121 transitions. [2024-06-14 12:41:41,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 163 transitions, 1691 flow [2024-06-14 12:41:41,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 163 transitions, 1610 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:41,820 INFO L231 Difference]: Finished difference. Result has 192 places, 156 transitions, 1394 flow [2024-06-14 12:41:41,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1394, PETRI_PLACES=192, PETRI_TRANSITIONS=156} [2024-06-14 12:41:41,820 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 160 predicate places. [2024-06-14 12:41:41,820 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 156 transitions, 1394 flow [2024-06-14 12:41:41,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:41,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:41,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:41,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:41:41,821 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)] === [2024-06-14 12:41:41,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:41,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1363785261, now seen corresponding path program 1 times [2024-06-14 12:41:41,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:41,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185061625] [2024-06-14 12:41:41,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:41,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:42,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:42,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:42,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185061625] [2024-06-14 12:41:42,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185061625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:42,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:42,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:42,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292850833] [2024-06-14 12:41:42,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:42,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:42,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:42,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:42,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:42,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:42,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 156 transitions, 1394 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:42,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:42,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:42,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:43,195 INFO L124 PetriNetUnfolderBase]: 345/715 cut-off events. [2024-06-14 12:41:43,196 INFO L125 PetriNetUnfolderBase]: For 21859/21859 co-relation queries the response was YES. [2024-06-14 12:41:43,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3499 conditions, 715 events. 345/715 cut-off events. For 21859/21859 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3829 event pairs, 48 based on Foata normal form. 8/720 useless extension candidates. Maximal degree in co-relation 3427. Up to 497 conditions per place. [2024-06-14 12:41:43,200 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 115 selfloop transitions, 42 changer transitions 6/167 dead transitions. [2024-06-14 12:41:43,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 167 transitions, 1788 flow [2024-06-14 12:41:43,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:43,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:43,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-14 12:41:43,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-14 12:41:43,201 INFO L175 Difference]: Start difference. First operand has 192 places, 156 transitions, 1394 flow. Second operand 10 states and 136 transitions. [2024-06-14 12:41:43,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 167 transitions, 1788 flow [2024-06-14 12:41:43,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 167 transitions, 1664 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:43,230 INFO L231 Difference]: Finished difference. Result has 194 places, 153 transitions, 1338 flow [2024-06-14 12:41:43,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1338, PETRI_PLACES=194, PETRI_TRANSITIONS=153} [2024-06-14 12:41:43,231 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2024-06-14 12:41:43,231 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 153 transitions, 1338 flow [2024-06-14 12:41:43,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:43,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:43,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:43,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:41:43,231 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)] === [2024-06-14 12:41:43,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:43,232 INFO L85 PathProgramCache]: Analyzing trace with hash 782496315, now seen corresponding path program 6 times [2024-06-14 12:41:43,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:43,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367973769] [2024-06-14 12:41:43,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:43,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:43,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:43,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:43,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367973769] [2024-06-14 12:41:43,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367973769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:43,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:43,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:43,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817260930] [2024-06-14 12:41:43,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:43,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:43,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:43,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:43,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:44,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:44,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 153 transitions, 1338 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:44,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:44,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:44,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:44,242 INFO L124 PetriNetUnfolderBase]: 336/698 cut-off events. [2024-06-14 12:41:44,243 INFO L125 PetriNetUnfolderBase]: For 15159/15159 co-relation queries the response was YES. [2024-06-14 12:41:44,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3350 conditions, 698 events. 336/698 cut-off events. For 15159/15159 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3740 event pairs, 57 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 3277. Up to 478 conditions per place. [2024-06-14 12:41:44,247 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 115 selfloop transitions, 50 changer transitions 0/169 dead transitions. [2024-06-14 12:41:44,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 169 transitions, 1720 flow [2024-06-14 12:41:44,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:44,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:44,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:41:44,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-14 12:41:44,247 INFO L175 Difference]: Start difference. First operand has 194 places, 153 transitions, 1338 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:41:44,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 169 transitions, 1720 flow [2024-06-14 12:41:44,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 169 transitions, 1606 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-14 12:41:44,282 INFO L231 Difference]: Finished difference. Result has 194 places, 156 transitions, 1361 flow [2024-06-14 12:41:44,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1361, PETRI_PLACES=194, PETRI_TRANSITIONS=156} [2024-06-14 12:41:44,283 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2024-06-14 12:41:44,283 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 156 transitions, 1361 flow [2024-06-14 12:41:44,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:44,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:44,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:44,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:41:44,284 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)] === [2024-06-14 12:41:44,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:44,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1767962851, now seen corresponding path program 7 times [2024-06-14 12:41:44,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:44,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968274140] [2024-06-14 12:41:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:44,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:44,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:45,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:45,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:45,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968274140] [2024-06-14 12:41:45,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968274140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:45,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:45,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:45,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050513367] [2024-06-14 12:41:45,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:45,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:45,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:45,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:45,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:45,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:45,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 156 transitions, 1361 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:45,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:45,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:45,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:45,583 INFO L124 PetriNetUnfolderBase]: 344/710 cut-off events. [2024-06-14 12:41:45,584 INFO L125 PetriNetUnfolderBase]: For 15410/15410 co-relation queries the response was YES. [2024-06-14 12:41:45,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3402 conditions, 710 events. 344/710 cut-off events. For 15410/15410 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3791 event pairs, 53 based on Foata normal form. 2/709 useless extension candidates. Maximal degree in co-relation 3328. Up to 457 conditions per place. [2024-06-14 12:41:45,588 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 113 selfloop transitions, 51 changer transitions 0/168 dead transitions. [2024-06-14 12:41:45,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 168 transitions, 1726 flow [2024-06-14 12:41:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:41:45,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:41:45,589 INFO L175 Difference]: Start difference. First operand has 194 places, 156 transitions, 1361 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:41:45,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 168 transitions, 1726 flow [2024-06-14 12:41:45,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 168 transitions, 1637 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:45,624 INFO L231 Difference]: Finished difference. Result has 199 places, 158 transitions, 1403 flow [2024-06-14 12:41:45,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1403, PETRI_PLACES=199, PETRI_TRANSITIONS=158} [2024-06-14 12:41:45,624 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2024-06-14 12:41:45,625 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 158 transitions, 1403 flow [2024-06-14 12:41:45,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:45,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:45,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:45,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:41:45,625 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)] === [2024-06-14 12:41:45,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:45,625 INFO L85 PathProgramCache]: Analyzing trace with hash -796353285, now seen corresponding path program 2 times [2024-06-14 12:41:45,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:45,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627998569] [2024-06-14 12:41:45,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:45,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:46,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:46,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627998569] [2024-06-14 12:41:46,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627998569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:46,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:46,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:46,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096286448] [2024-06-14 12:41:46,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:46,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:46,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:46,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:46,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:46,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:46,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 158 transitions, 1403 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:46,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:46,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:46,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:47,169 INFO L124 PetriNetUnfolderBase]: 374/784 cut-off events. [2024-06-14 12:41:47,170 INFO L125 PetriNetUnfolderBase]: For 31072/31072 co-relation queries the response was YES. [2024-06-14 12:41:47,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4167 conditions, 784 events. 374/784 cut-off events. For 31072/31072 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4285 event pairs, 73 based on Foata normal form. 6/787 useless extension candidates. Maximal degree in co-relation 4091. Up to 501 conditions per place. [2024-06-14 12:41:47,174 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 116 selfloop transitions, 51 changer transitions 5/176 dead transitions. [2024-06-14 12:41:47,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 176 transitions, 1953 flow [2024-06-14 12:41:47,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:47,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:47,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-14 12:41:47,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214876033057851 [2024-06-14 12:41:47,175 INFO L175 Difference]: Start difference. First operand has 199 places, 158 transitions, 1403 flow. Second operand 11 states and 153 transitions. [2024-06-14 12:41:47,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 176 transitions, 1953 flow [2024-06-14 12:41:47,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 176 transitions, 1840 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:47,222 INFO L231 Difference]: Finished difference. Result has 202 places, 157 transitions, 1390 flow [2024-06-14 12:41:47,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1290, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1390, PETRI_PLACES=202, PETRI_TRANSITIONS=157} [2024-06-14 12:41:47,222 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 170 predicate places. [2024-06-14 12:41:47,222 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 157 transitions, 1390 flow [2024-06-14 12:41:47,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:47,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:47,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:47,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:41:47,223 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)] === [2024-06-14 12:41:47,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:47,223 INFO L85 PathProgramCache]: Analyzing trace with hash 233123667, now seen corresponding path program 3 times [2024-06-14 12:41:47,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:47,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030770581] [2024-06-14 12:41:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:47,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:48,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:48,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030770581] [2024-06-14 12:41:48,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030770581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:48,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:48,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:48,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836343209] [2024-06-14 12:41:48,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:48,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:48,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:48,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:48,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:48,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:48,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 157 transitions, 1390 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:48,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:48,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:48,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:48,614 INFO L124 PetriNetUnfolderBase]: 352/730 cut-off events. [2024-06-14 12:41:48,614 INFO L125 PetriNetUnfolderBase]: For 24967/24967 co-relation queries the response was YES. [2024-06-14 12:41:48,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3557 conditions, 730 events. 352/730 cut-off events. For 24967/24967 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3968 event pairs, 59 based on Foata normal form. 8/735 useless extension candidates. Maximal degree in co-relation 3481. Up to 476 conditions per place. [2024-06-14 12:41:48,619 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 100 selfloop transitions, 56 changer transitions 9/169 dead transitions. [2024-06-14 12:41:48,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 169 transitions, 1788 flow [2024-06-14 12:41:48,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:48,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 12:41:48,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-14 12:41:48,620 INFO L175 Difference]: Start difference. First operand has 202 places, 157 transitions, 1390 flow. Second operand 11 states and 146 transitions. [2024-06-14 12:41:48,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 169 transitions, 1788 flow [2024-06-14 12:41:48,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 169 transitions, 1684 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:48,660 INFO L231 Difference]: Finished difference. Result has 202 places, 154 transitions, 1385 flow [2024-06-14 12:41:48,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1385, PETRI_PLACES=202, PETRI_TRANSITIONS=154} [2024-06-14 12:41:48,661 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 170 predicate places. [2024-06-14 12:41:48,661 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 154 transitions, 1385 flow [2024-06-14 12:41:48,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:48,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:48,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:48,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:41:48,661 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)] === [2024-06-14 12:41:48,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:48,662 INFO L85 PathProgramCache]: Analyzing trace with hash 493176271, now seen corresponding path program 8 times [2024-06-14 12:41:48,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:48,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175744140] [2024-06-14 12:41:48,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:48,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:49,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:49,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175744140] [2024-06-14 12:41:49,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175744140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:49,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:49,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:49,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536430923] [2024-06-14 12:41:49,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:49,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:49,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:49,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:49,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:49,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:49,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 154 transitions, 1385 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:49,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:49,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:49,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:49,923 INFO L124 PetriNetUnfolderBase]: 339/707 cut-off events. [2024-06-14 12:41:49,923 INFO L125 PetriNetUnfolderBase]: For 16700/16700 co-relation queries the response was YES. [2024-06-14 12:41:49,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3435 conditions, 707 events. 339/707 cut-off events. For 16700/16700 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3774 event pairs, 61 based on Foata normal form. 2/706 useless extension candidates. Maximal degree in co-relation 3359. Up to 452 conditions per place. [2024-06-14 12:41:49,927 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 116 selfloop transitions, 48 changer transitions 0/168 dead transitions. [2024-06-14 12:41:49,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 168 transitions, 1856 flow [2024-06-14 12:41:49,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:49,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:49,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-14 12:41:49,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-14 12:41:49,928 INFO L175 Difference]: Start difference. First operand has 202 places, 154 transitions, 1385 flow. Second operand 10 states and 141 transitions. [2024-06-14 12:41:49,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 168 transitions, 1856 flow [2024-06-14 12:41:49,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 168 transitions, 1732 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:49,965 INFO L231 Difference]: Finished difference. Result has 199 places, 155 transitions, 1376 flow [2024-06-14 12:41:49,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1376, PETRI_PLACES=199, PETRI_TRANSITIONS=155} [2024-06-14 12:41:49,966 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2024-06-14 12:41:49,966 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 155 transitions, 1376 flow [2024-06-14 12:41:49,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:49,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:49,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:49,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:41:49,966 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)] === [2024-06-14 12:41:49,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1240924067, now seen corresponding path program 9 times [2024-06-14 12:41:49,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:49,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168177058] [2024-06-14 12:41:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:49,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:50,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:50,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:50,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168177058] [2024-06-14 12:41:50,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168177058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:50,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:50,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:50,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091518498] [2024-06-14 12:41:50,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:50,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:50,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:50,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:50,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:50,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:50,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 155 transitions, 1376 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:50,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:50,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:50,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:51,212 INFO L124 PetriNetUnfolderBase]: 343/711 cut-off events. [2024-06-14 12:41:51,212 INFO L125 PetriNetUnfolderBase]: For 16230/16230 co-relation queries the response was YES. [2024-06-14 12:41:51,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3438 conditions, 711 events. 343/711 cut-off events. For 16230/16230 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3815 event pairs, 65 based on Foata normal form. 2/710 useless extension candidates. Maximal degree in co-relation 3363. Up to 529 conditions per place. [2024-06-14 12:41:51,216 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 114 selfloop transitions, 49 changer transitions 0/167 dead transitions. [2024-06-14 12:41:51,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 167 transitions, 1739 flow [2024-06-14 12:41:51,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:51,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:51,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-14 12:41:51,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-06-14 12:41:51,218 INFO L175 Difference]: Start difference. First operand has 199 places, 155 transitions, 1376 flow. Second operand 11 states and 150 transitions. [2024-06-14 12:41:51,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 167 transitions, 1739 flow [2024-06-14 12:41:51,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 167 transitions, 1582 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:51,255 INFO L231 Difference]: Finished difference. Result has 201 places, 156 transitions, 1336 flow [2024-06-14 12:41:51,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1336, PETRI_PLACES=201, PETRI_TRANSITIONS=156} [2024-06-14 12:41:51,256 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 169 predicate places. [2024-06-14 12:41:51,256 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 156 transitions, 1336 flow [2024-06-14 12:41:51,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:51,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:51,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:51,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:41:51,257 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)] === [2024-06-14 12:41:51,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:51,257 INFO L85 PathProgramCache]: Analyzing trace with hash 493320421, now seen corresponding path program 10 times [2024-06-14 12:41:51,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:51,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946408130] [2024-06-14 12:41:51,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:51,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:51,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:51,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946408130] [2024-06-14 12:41:51,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946408130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:51,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:51,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:51,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304017422] [2024-06-14 12:41:51,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:51,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:51,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:51,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:51,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:52,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:52,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 156 transitions, 1336 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:52,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:52,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:52,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:52,368 INFO L124 PetriNetUnfolderBase]: 354/732 cut-off events. [2024-06-14 12:41:52,368 INFO L125 PetriNetUnfolderBase]: For 19500/19500 co-relation queries the response was YES. [2024-06-14 12:41:52,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 732 events. 354/732 cut-off events. For 19500/19500 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3937 event pairs, 64 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 3445. Up to 533 conditions per place. [2024-06-14 12:41:52,397 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 119 selfloop transitions, 47 changer transitions 0/170 dead transitions. [2024-06-14 12:41:52,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 170 transitions, 1820 flow [2024-06-14 12:41:52,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:52,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-14 12:41:52,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 12:41:52,398 INFO L175 Difference]: Start difference. First operand has 201 places, 156 transitions, 1336 flow. Second operand 10 states and 140 transitions. [2024-06-14 12:41:52,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 170 transitions, 1820 flow [2024-06-14 12:41:52,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 170 transitions, 1718 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:52,440 INFO L231 Difference]: Finished difference. Result has 202 places, 158 transitions, 1356 flow [2024-06-14 12:41:52,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1356, PETRI_PLACES=202, PETRI_TRANSITIONS=158} [2024-06-14 12:41:52,441 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 170 predicate places. [2024-06-14 12:41:52,441 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 158 transitions, 1356 flow [2024-06-14 12:41:52,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:52,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:52,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:52,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:41:52,442 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)] === [2024-06-14 12:41:52,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:52,442 INFO L85 PathProgramCache]: Analyzing trace with hash 498890191, now seen corresponding path program 11 times [2024-06-14 12:41:52,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:52,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463911959] [2024-06-14 12:41:52,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:52,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:53,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:53,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463911959] [2024-06-14 12:41:53,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463911959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:53,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:53,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:53,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095543292] [2024-06-14 12:41:53,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:53,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:53,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:53,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:53,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:53,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:53,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 158 transitions, 1356 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:53,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:53,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:53,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:53,787 INFO L124 PetriNetUnfolderBase]: 351/731 cut-off events. [2024-06-14 12:41:53,787 INFO L125 PetriNetUnfolderBase]: For 17460/17460 co-relation queries the response was YES. [2024-06-14 12:41:53,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3413 conditions, 731 events. 351/731 cut-off events. For 17460/17460 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3932 event pairs, 67 based on Foata normal form. 2/730 useless extension candidates. Maximal degree in co-relation 3337. Up to 545 conditions per place. [2024-06-14 12:41:53,792 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 118 selfloop transitions, 46 changer transitions 0/168 dead transitions. [2024-06-14 12:41:53,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 168 transitions, 1706 flow [2024-06-14 12:41:53,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:53,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:53,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-14 12:41:53,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-14 12:41:53,794 INFO L175 Difference]: Start difference. First operand has 202 places, 158 transitions, 1356 flow. Second operand 10 states and 137 transitions. [2024-06-14 12:41:53,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 168 transitions, 1706 flow [2024-06-14 12:41:53,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 168 transitions, 1630 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:53,829 INFO L231 Difference]: Finished difference. Result has 206 places, 158 transitions, 1376 flow [2024-06-14 12:41:53,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1376, PETRI_PLACES=206, PETRI_TRANSITIONS=158} [2024-06-14 12:41:53,844 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 174 predicate places. [2024-06-14 12:41:53,844 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 158 transitions, 1376 flow [2024-06-14 12:41:53,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:53,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:53,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:53,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:41:53,845 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)] === [2024-06-14 12:41:53,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:53,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1233774227, now seen corresponding path program 12 times [2024-06-14 12:41:53,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:53,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416341729] [2024-06-14 12:41:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:53,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:54,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:54,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416341729] [2024-06-14 12:41:54,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416341729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:54,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:54,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:54,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566067718] [2024-06-14 12:41:54,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:54,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:54,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:54,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:54,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:54,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:54,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 158 transitions, 1376 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:54,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:54,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:54,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:55,061 INFO L124 PetriNetUnfolderBase]: 355/735 cut-off events. [2024-06-14 12:41:55,062 INFO L125 PetriNetUnfolderBase]: For 18070/18070 co-relation queries the response was YES. [2024-06-14 12:41:55,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3495 conditions, 735 events. 355/735 cut-off events. For 18070/18070 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3996 event pairs, 65 based on Foata normal form. 2/734 useless extension candidates. Maximal degree in co-relation 3417. Up to 553 conditions per place. [2024-06-14 12:41:55,067 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 117 selfloop transitions, 49 changer transitions 0/170 dead transitions. [2024-06-14 12:41:55,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 170 transitions, 1745 flow [2024-06-14 12:41:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:55,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:55,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-14 12:41:55,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41046831955922863 [2024-06-14 12:41:55,068 INFO L175 Difference]: Start difference. First operand has 206 places, 158 transitions, 1376 flow. Second operand 11 states and 149 transitions. [2024-06-14 12:41:55,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 170 transitions, 1745 flow [2024-06-14 12:41:55,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 170 transitions, 1651 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:55,115 INFO L231 Difference]: Finished difference. Result has 208 places, 159 transitions, 1399 flow [2024-06-14 12:41:55,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1399, PETRI_PLACES=208, PETRI_TRANSITIONS=159} [2024-06-14 12:41:55,116 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 176 predicate places. [2024-06-14 12:41:55,116 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 159 transitions, 1399 flow [2024-06-14 12:41:55,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:55,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:55,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:55,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:41:55,117 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)] === [2024-06-14 12:41:55,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:55,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1018958911, now seen corresponding path program 13 times [2024-06-14 12:41:55,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:55,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747177280] [2024-06-14 12:41:55,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:55,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:56,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:56,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747177280] [2024-06-14 12:41:56,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747177280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:56,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:56,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:56,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391192017] [2024-06-14 12:41:56,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:56,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:56,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:56,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:56,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:56,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:56,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 159 transitions, 1399 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:56,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:56,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:56,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:56,426 INFO L124 PetriNetUnfolderBase]: 359/743 cut-off events. [2024-06-14 12:41:56,426 INFO L125 PetriNetUnfolderBase]: For 18821/18821 co-relation queries the response was YES. [2024-06-14 12:41:56,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3560 conditions, 743 events. 359/743 cut-off events. For 18821/18821 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4056 event pairs, 65 based on Foata normal form. 2/742 useless extension candidates. Maximal degree in co-relation 3481. Up to 561 conditions per place. [2024-06-14 12:41:56,430 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 121 selfloop transitions, 45 changer transitions 0/170 dead transitions. [2024-06-14 12:41:56,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 170 transitions, 1768 flow [2024-06-14 12:41:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:56,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-14 12:41:56,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-14 12:41:56,431 INFO L175 Difference]: Start difference. First operand has 208 places, 159 transitions, 1399 flow. Second operand 10 states and 137 transitions. [2024-06-14 12:41:56,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 170 transitions, 1768 flow [2024-06-14 12:41:56,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 170 transitions, 1641 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:56,475 INFO L231 Difference]: Finished difference. Result has 208 places, 160 transitions, 1383 flow [2024-06-14 12:41:56,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1383, PETRI_PLACES=208, PETRI_TRANSITIONS=160} [2024-06-14 12:41:56,475 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 176 predicate places. [2024-06-14 12:41:56,475 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 160 transitions, 1383 flow [2024-06-14 12:41:56,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:56,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:56,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:56,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:41:56,476 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)] === [2024-06-14 12:41:56,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:56,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1660951905, now seen corresponding path program 14 times [2024-06-14 12:41:56,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:56,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501554399] [2024-06-14 12:41:56,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:56,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:56,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:57,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:57,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:57,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501554399] [2024-06-14 12:41:57,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501554399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:57,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:57,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:57,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733371833] [2024-06-14 12:41:57,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:57,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:57,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:57,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:57,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:57,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:57,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 160 transitions, 1383 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:57,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:57,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:57,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:57,415 INFO L124 PetriNetUnfolderBase]: 363/751 cut-off events. [2024-06-14 12:41:57,416 INFO L125 PetriNetUnfolderBase]: For 19438/19438 co-relation queries the response was YES. [2024-06-14 12:41:57,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3583 conditions, 751 events. 363/751 cut-off events. For 19438/19438 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4104 event pairs, 67 based on Foata normal form. 2/750 useless extension candidates. Maximal degree in co-relation 3503. Up to 569 conditions per place. [2024-06-14 12:41:57,420 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 123 selfloop transitions, 44 changer transitions 0/171 dead transitions. [2024-06-14 12:41:57,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 171 transitions, 1756 flow [2024-06-14 12:41:57,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:57,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-14 12:41:57,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-14 12:41:57,421 INFO L175 Difference]: Start difference. First operand has 208 places, 160 transitions, 1383 flow. Second operand 10 states and 138 transitions. [2024-06-14 12:41:57,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 171 transitions, 1756 flow [2024-06-14 12:41:57,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 171 transitions, 1656 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:57,471 INFO L231 Difference]: Finished difference. Result has 210 places, 161 transitions, 1394 flow [2024-06-14 12:41:57,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1394, PETRI_PLACES=210, PETRI_TRANSITIONS=161} [2024-06-14 12:41:57,472 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 178 predicate places. [2024-06-14 12:41:57,472 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 161 transitions, 1394 flow [2024-06-14 12:41:57,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:57,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:57,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:57,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:41:57,472 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)] === [2024-06-14 12:41:57,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:57,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1599680237, now seen corresponding path program 15 times [2024-06-14 12:41:57,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:57,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796372423] [2024-06-14 12:41:57,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:57,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:58,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:58,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796372423] [2024-06-14 12:41:58,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796372423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:58,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:58,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:58,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763274489] [2024-06-14 12:41:58,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:58,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:58,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:58,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:58,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:58,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:58,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 161 transitions, 1394 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:58,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:58,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:58,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:58,481 INFO L124 PetriNetUnfolderBase]: 367/759 cut-off events. [2024-06-14 12:41:58,481 INFO L125 PetriNetUnfolderBase]: For 20149/20149 co-relation queries the response was YES. [2024-06-14 12:41:58,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3628 conditions, 759 events. 367/759 cut-off events. For 20149/20149 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4155 event pairs, 67 based on Foata normal form. 2/758 useless extension candidates. Maximal degree in co-relation 3547. Up to 557 conditions per place. [2024-06-14 12:41:58,486 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 123 selfloop transitions, 46 changer transitions 0/173 dead transitions. [2024-06-14 12:41:58,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 173 transitions, 1775 flow [2024-06-14 12:41:58,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:58,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-14 12:41:58,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-14 12:41:58,501 INFO L175 Difference]: Start difference. First operand has 210 places, 161 transitions, 1394 flow. Second operand 10 states and 139 transitions. [2024-06-14 12:41:58,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 173 transitions, 1775 flow [2024-06-14 12:41:58,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 173 transitions, 1675 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:58,552 INFO L231 Difference]: Finished difference. Result has 212 places, 162 transitions, 1411 flow [2024-06-14 12:41:58,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1411, PETRI_PLACES=212, PETRI_TRANSITIONS=162} [2024-06-14 12:41:58,553 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 180 predicate places. [2024-06-14 12:41:58,553 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 162 transitions, 1411 flow [2024-06-14 12:41:58,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:58,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:58,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:58,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:41:58,553 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)] === [2024-06-14 12:41:58,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:58,554 INFO L85 PathProgramCache]: Analyzing trace with hash 598925493, now seen corresponding path program 16 times [2024-06-14 12:41:58,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:58,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468032443] [2024-06-14 12:41:58,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:58,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:59,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:59,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468032443] [2024-06-14 12:41:59,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468032443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:59,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:59,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:41:59,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585570035] [2024-06-14 12:41:59,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:59,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:41:59,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:59,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:41:59,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:41:59,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:59,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 162 transitions, 1411 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:59,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:59,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:59,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:59,752 INFO L124 PetriNetUnfolderBase]: 364/758 cut-off events. [2024-06-14 12:41:59,752 INFO L125 PetriNetUnfolderBase]: For 17422/17422 co-relation queries the response was YES. [2024-06-14 12:41:59,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3493 conditions, 758 events. 364/758 cut-off events. For 17422/17422 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4147 event pairs, 68 based on Foata normal form. 2/757 useless extension candidates. Maximal degree in co-relation 3411. Up to 552 conditions per place. [2024-06-14 12:41:59,757 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 119 selfloop transitions, 51 changer transitions 0/174 dead transitions. [2024-06-14 12:41:59,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 174 transitions, 1777 flow [2024-06-14 12:41:59,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-14 12:41:59,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-06-14 12:41:59,758 INFO L175 Difference]: Start difference. First operand has 212 places, 162 transitions, 1411 flow. Second operand 11 states and 150 transitions. [2024-06-14 12:41:59,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 174 transitions, 1777 flow [2024-06-14 12:41:59,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 174 transitions, 1665 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:59,805 INFO L231 Difference]: Finished difference. Result has 215 places, 162 transitions, 1405 flow [2024-06-14 12:41:59,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1299, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1405, PETRI_PLACES=215, PETRI_TRANSITIONS=162} [2024-06-14 12:41:59,805 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 183 predicate places. [2024-06-14 12:41:59,805 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 162 transitions, 1405 flow [2024-06-14 12:41:59,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:59,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:59,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:59,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:41:59,806 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)] === [2024-06-14 12:41:59,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:59,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1977912113, now seen corresponding path program 4 times [2024-06-14 12:41:59,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:59,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099550137] [2024-06-14 12:41:59,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:59,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:00,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:00,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099550137] [2024-06-14 12:42:00,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099550137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:00,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:00,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:00,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494426721] [2024-06-14 12:42:00,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:00,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:00,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:00,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:00,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:00,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:00,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 162 transitions, 1405 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:00,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:00,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:00,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:01,131 INFO L124 PetriNetUnfolderBase]: 394/826 cut-off events. [2024-06-14 12:42:01,132 INFO L125 PetriNetUnfolderBase]: For 37789/37789 co-relation queries the response was YES. [2024-06-14 12:42:01,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4244 conditions, 826 events. 394/826 cut-off events. For 37789/37789 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4606 event pairs, 74 based on Foata normal form. 6/829 useless extension candidates. Maximal degree in co-relation 4161. Up to 521 conditions per place. [2024-06-14 12:42:01,137 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 113 selfloop transitions, 56 changer transitions 6/179 dead transitions. [2024-06-14 12:42:01,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 179 transitions, 1967 flow [2024-06-14 12:42:01,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:01,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-14 12:42:01,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-14 12:42:01,144 INFO L175 Difference]: Start difference. First operand has 215 places, 162 transitions, 1405 flow. Second operand 12 states and 159 transitions. [2024-06-14 12:42:01,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 179 transitions, 1967 flow [2024-06-14 12:42:01,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 179 transitions, 1762 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:42:01,226 INFO L231 Difference]: Finished difference. Result has 215 places, 160 transitions, 1300 flow [2024-06-14 12:42:01,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1200, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1300, PETRI_PLACES=215, PETRI_TRANSITIONS=160} [2024-06-14 12:42:01,227 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 183 predicate places. [2024-06-14 12:42:01,227 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 160 transitions, 1300 flow [2024-06-14 12:42:01,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:01,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:01,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:01,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:42:01,228 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)] === [2024-06-14 12:42:01,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:01,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1978238543, now seen corresponding path program 5 times [2024-06-14 12:42:01,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:01,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940703684] [2024-06-14 12:42:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:01,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:02,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:02,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940703684] [2024-06-14 12:42:02,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940703684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:02,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:02,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208757253] [2024-06-14 12:42:02,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:02,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:02,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:02,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:02,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:02,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:02,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 160 transitions, 1300 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:02,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:02,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:02,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:02,496 INFO L124 PetriNetUnfolderBase]: 370/774 cut-off events. [2024-06-14 12:42:02,497 INFO L125 PetriNetUnfolderBase]: For 28640/28640 co-relation queries the response was YES. [2024-06-14 12:42:02,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 774 events. 370/774 cut-off events. For 28640/28640 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4265 event pairs, 66 based on Foata normal form. 8/779 useless extension candidates. Maximal degree in co-relation 3335. Up to 521 conditions per place. [2024-06-14 12:42:02,502 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 104 selfloop transitions, 52 changer transitions 13/173 dead transitions. [2024-06-14 12:42:02,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 173 transitions, 1704 flow [2024-06-14 12:42:02,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:02,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-14 12:42:02,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:42:02,503 INFO L175 Difference]: Start difference. First operand has 215 places, 160 transitions, 1300 flow. Second operand 12 states and 154 transitions. [2024-06-14 12:42:02,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 173 transitions, 1704 flow [2024-06-14 12:42:02,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 173 transitions, 1590 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:02,550 INFO L231 Difference]: Finished difference. Result has 214 places, 155 transitions, 1255 flow [2024-06-14 12:42:02,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1255, PETRI_PLACES=214, PETRI_TRANSITIONS=155} [2024-06-14 12:42:02,551 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 182 predicate places. [2024-06-14 12:42:02,551 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 155 transitions, 1255 flow [2024-06-14 12:42:02,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:02,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:02,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:02,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:42:02,551 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)] === [2024-06-14 12:42:02,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:02,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1722931735, now seen corresponding path program 6 times [2024-06-14 12:42:02,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:02,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80286865] [2024-06-14 12:42:02,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:02,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:03,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:03,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80286865] [2024-06-14 12:42:03,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80286865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:03,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:03,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:03,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580680038] [2024-06-14 12:42:03,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:03,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:03,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:03,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:03,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:03,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:03,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 155 transitions, 1255 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:03,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:03,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:03,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:03,906 INFO L124 PetriNetUnfolderBase]: 381/799 cut-off events. [2024-06-14 12:42:03,906 INFO L125 PetriNetUnfolderBase]: For 38850/38850 co-relation queries the response was YES. [2024-06-14 12:42:03,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3987 conditions, 799 events. 381/799 cut-off events. For 38850/38850 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4409 event pairs, 74 based on Foata normal form. 6/802 useless extension candidates. Maximal degree in co-relation 3905. Up to 492 conditions per place. [2024-06-14 12:42:03,911 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 107 selfloop transitions, 55 changer transitions 6/172 dead transitions. [2024-06-14 12:42:03,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 172 transitions, 1805 flow [2024-06-14 12:42:03,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:03,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:03,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-14 12:42:03,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:42:03,912 INFO L175 Difference]: Start difference. First operand has 214 places, 155 transitions, 1255 flow. Second operand 12 states and 162 transitions. [2024-06-14 12:42:03,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 172 transitions, 1805 flow [2024-06-14 12:42:03,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 172 transitions, 1675 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:03,987 INFO L231 Difference]: Finished difference. Result has 207 places, 153 transitions, 1237 flow [2024-06-14 12:42:03,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1237, PETRI_PLACES=207, PETRI_TRANSITIONS=153} [2024-06-14 12:42:03,987 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 175 predicate places. [2024-06-14 12:42:03,988 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 153 transitions, 1237 flow [2024-06-14 12:42:03,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:03,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:03,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:03,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:42:03,988 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)] === [2024-06-14 12:42:03,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:03,989 INFO L85 PathProgramCache]: Analyzing trace with hash 350086607, now seen corresponding path program 7 times [2024-06-14 12:42:03,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:03,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761747550] [2024-06-14 12:42:03,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:03,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:05,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:05,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761747550] [2024-06-14 12:42:05,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761747550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:05,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:05,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:05,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116045661] [2024-06-14 12:42:05,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:05,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:05,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:05,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:05,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:05,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:05,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 153 transitions, 1237 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:05,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:05,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:05,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:05,678 INFO L124 PetriNetUnfolderBase]: 379/795 cut-off events. [2024-06-14 12:42:05,678 INFO L125 PetriNetUnfolderBase]: For 40249/40249 co-relation queries the response was YES. [2024-06-14 12:42:05,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3944 conditions, 795 events. 379/795 cut-off events. For 40249/40249 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4364 event pairs, 86 based on Foata normal form. 8/800 useless extension candidates. Maximal degree in co-relation 3865. Up to 573 conditions per place. [2024-06-14 12:42:05,683 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 109 selfloop transitions, 48 changer transitions 8/169 dead transitions. [2024-06-14 12:42:05,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 169 transitions, 1637 flow [2024-06-14 12:42:05,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:42:05,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:42:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 175 transitions. [2024-06-14 12:42:05,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40792540792540793 [2024-06-14 12:42:05,704 INFO L175 Difference]: Start difference. First operand has 207 places, 153 transitions, 1237 flow. Second operand 13 states and 175 transitions. [2024-06-14 12:42:05,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 169 transitions, 1637 flow [2024-06-14 12:42:05,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 169 transitions, 1527 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:05,769 INFO L231 Difference]: Finished difference. Result has 207 places, 149 transitions, 1199 flow [2024-06-14 12:42:05,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1199, PETRI_PLACES=207, PETRI_TRANSITIONS=149} [2024-06-14 12:42:05,769 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 175 predicate places. [2024-06-14 12:42:05,769 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 149 transitions, 1199 flow [2024-06-14 12:42:05,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:05,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:05,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:05,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:42:05,770 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)] === [2024-06-14 12:42:05,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:05,770 INFO L85 PathProgramCache]: Analyzing trace with hash 43409585, now seen corresponding path program 8 times [2024-06-14 12:42:05,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:05,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869228932] [2024-06-14 12:42:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:05,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:06,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:06,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:06,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869228932] [2024-06-14 12:42:06,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869228932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:06,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:06,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:06,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547233329] [2024-06-14 12:42:06,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:06,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:06,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:06,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:06,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:06,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:06,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 149 transitions, 1199 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:06,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:06,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:06,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:07,091 INFO L124 PetriNetUnfolderBase]: 391/821 cut-off events. [2024-06-14 12:42:07,091 INFO L125 PetriNetUnfolderBase]: For 47825/47825 co-relation queries the response was YES. [2024-06-14 12:42:07,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4481 conditions, 821 events. 391/821 cut-off events. For 47825/47825 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4527 event pairs, 92 based on Foata normal form. 6/824 useless extension candidates. Maximal degree in co-relation 4403. Up to 558 conditions per place. [2024-06-14 12:42:07,096 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 111 selfloop transitions, 47 changer transitions 6/168 dead transitions. [2024-06-14 12:42:07,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 168 transitions, 1735 flow [2024-06-14 12:42:07,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:07,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-14 12:42:07,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:42:07,098 INFO L175 Difference]: Start difference. First operand has 207 places, 149 transitions, 1199 flow. Second operand 12 states and 162 transitions. [2024-06-14 12:42:07,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 168 transitions, 1735 flow [2024-06-14 12:42:07,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 168 transitions, 1617 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-06-14 12:42:07,175 INFO L231 Difference]: Finished difference. Result has 202 places, 147 transitions, 1177 flow [2024-06-14 12:42:07,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1177, PETRI_PLACES=202, PETRI_TRANSITIONS=147} [2024-06-14 12:42:07,176 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 170 predicate places. [2024-06-14 12:42:07,176 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 147 transitions, 1177 flow [2024-06-14 12:42:07,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:07,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:07,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:07,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:42:07,177 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)] === [2024-06-14 12:42:07,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:07,177 INFO L85 PathProgramCache]: Analyzing trace with hash 498898127, now seen corresponding path program 9 times [2024-06-14 12:42:07,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:07,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691655695] [2024-06-14 12:42:07,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:07,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:08,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:08,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:08,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691655695] [2024-06-14 12:42:08,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691655695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:08,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:08,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:08,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593063965] [2024-06-14 12:42:08,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:08,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:08,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:08,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:08,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:08,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:08,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 147 transitions, 1177 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:08,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:08,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:08,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:08,681 INFO L124 PetriNetUnfolderBase]: 389/815 cut-off events. [2024-06-14 12:42:08,681 INFO L125 PetriNetUnfolderBase]: For 49891/49891 co-relation queries the response was YES. [2024-06-14 12:42:08,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4425 conditions, 815 events. 389/815 cut-off events. For 49891/49891 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4489 event pairs, 96 based on Foata normal form. 8/820 useless extension candidates. Maximal degree in co-relation 4349. Up to 613 conditions per place. [2024-06-14 12:42:08,686 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 107 selfloop transitions, 41 changer transitions 9/161 dead transitions. [2024-06-14 12:42:08,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 161 transitions, 1553 flow [2024-06-14 12:42:08,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:08,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:08,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-14 12:42:08,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-06-14 12:42:08,687 INFO L175 Difference]: Start difference. First operand has 202 places, 147 transitions, 1177 flow. Second operand 11 states and 150 transitions. [2024-06-14 12:42:08,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 161 transitions, 1553 flow [2024-06-14 12:42:08,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 161 transitions, 1457 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:08,764 INFO L231 Difference]: Finished difference. Result has 200 places, 144 transitions, 1148 flow [2024-06-14 12:42:08,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1148, PETRI_PLACES=200, PETRI_TRANSITIONS=144} [2024-06-14 12:42:08,764 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 168 predicate places. [2024-06-14 12:42:08,764 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 144 transitions, 1148 flow [2024-06-14 12:42:08,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:08,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:08,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:08,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:42:08,766 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)] === [2024-06-14 12:42:08,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:08,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1026100815, now seen corresponding path program 10 times [2024-06-14 12:42:08,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:08,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289953261] [2024-06-14 12:42:08,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:08,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:09,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:09,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289953261] [2024-06-14 12:42:09,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289953261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:09,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:09,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:09,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020744523] [2024-06-14 12:42:09,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:09,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:09,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:09,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:09,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:10,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:10,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 144 transitions, 1148 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:10,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:10,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:10,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:10,353 INFO L124 PetriNetUnfolderBase]: 384/808 cut-off events. [2024-06-14 12:42:10,353 INFO L125 PetriNetUnfolderBase]: For 47769/47769 co-relation queries the response was YES. [2024-06-14 12:42:10,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4358 conditions, 808 events. 384/808 cut-off events. For 47769/47769 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4451 event pairs, 98 based on Foata normal form. 8/813 useless extension candidates. Maximal degree in co-relation 4283. Up to 596 conditions per place. [2024-06-14 12:42:10,358 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 105 selfloop transitions, 36 changer transitions 13/158 dead transitions. [2024-06-14 12:42:10,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 158 transitions, 1518 flow [2024-06-14 12:42:10,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:10,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:10,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-14 12:42:10,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418732782369146 [2024-06-14 12:42:10,359 INFO L175 Difference]: Start difference. First operand has 200 places, 144 transitions, 1148 flow. Second operand 11 states and 152 transitions. [2024-06-14 12:42:10,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 158 transitions, 1518 flow [2024-06-14 12:42:10,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 158 transitions, 1424 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:10,429 INFO L231 Difference]: Finished difference. Result has 198 places, 138 transitions, 1098 flow [2024-06-14 12:42:10,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1098, PETRI_PLACES=198, PETRI_TRANSITIONS=138} [2024-06-14 12:42:10,430 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 166 predicate places. [2024-06-14 12:42:10,430 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 138 transitions, 1098 flow [2024-06-14 12:42:10,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:10,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:10,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:10,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:42:10,431 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)] === [2024-06-14 12:42:10,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:10,431 INFO L85 PathProgramCache]: Analyzing trace with hash -760403535, now seen corresponding path program 11 times [2024-06-14 12:42:10,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:10,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263196821] [2024-06-14 12:42:10,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:10,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:11,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:11,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:11,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263196821] [2024-06-14 12:42:11,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263196821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:11,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:11,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:11,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654891404] [2024-06-14 12:42:11,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:11,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:11,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:11,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:11,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:11,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:11,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 138 transitions, 1098 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:11,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:11,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:11,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:11,606 INFO L124 PetriNetUnfolderBase]: 372/788 cut-off events. [2024-06-14 12:42:11,606 INFO L125 PetriNetUnfolderBase]: For 46605/46605 co-relation queries the response was YES. [2024-06-14 12:42:11,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4203 conditions, 788 events. 372/788 cut-off events. For 46605/46605 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4347 event pairs, 90 based on Foata normal form. 8/793 useless extension candidates. Maximal degree in co-relation 4129. Up to 546 conditions per place. [2024-06-14 12:42:11,612 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 94 selfloop transitions, 43 changer transitions 9/150 dead transitions. [2024-06-14 12:42:11,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 150 transitions, 1442 flow [2024-06-14 12:42:11,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:11,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:11,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:42:11,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-14 12:42:11,613 INFO L175 Difference]: Start difference. First operand has 198 places, 138 transitions, 1098 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:42:11,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 150 transitions, 1442 flow [2024-06-14 12:42:11,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 150 transitions, 1356 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:11,675 INFO L231 Difference]: Finished difference. Result has 193 places, 135 transitions, 1088 flow [2024-06-14 12:42:11,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1088, PETRI_PLACES=193, PETRI_TRANSITIONS=135} [2024-06-14 12:42:11,675 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 161 predicate places. [2024-06-14 12:42:11,675 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 135 transitions, 1088 flow [2024-06-14 12:42:11,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:11,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:11,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:11,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:42:11,676 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)] === [2024-06-14 12:42:11,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:11,676 INFO L85 PathProgramCache]: Analyzing trace with hash 43083155, now seen corresponding path program 12 times [2024-06-14 12:42:11,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:11,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359878224] [2024-06-14 12:42:11,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:11,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:12,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:12,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359878224] [2024-06-14 12:42:12,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359878224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:12,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:12,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:12,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653739720] [2024-06-14 12:42:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:12,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:12,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:12,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:12,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:12,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:12,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 135 transitions, 1088 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:12,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:12,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:12,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:13,064 INFO L124 PetriNetUnfolderBase]: 345/733 cut-off events. [2024-06-14 12:42:13,064 INFO L125 PetriNetUnfolderBase]: For 32515/32515 co-relation queries the response was YES. [2024-06-14 12:42:13,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3513 conditions, 733 events. 345/733 cut-off events. For 32515/32515 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3960 event pairs, 84 based on Foata normal form. 8/738 useless extension candidates. Maximal degree in co-relation 3441. Up to 527 conditions per place. [2024-06-14 12:42:13,069 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 94 selfloop transitions, 41 changer transitions 11/150 dead transitions. [2024-06-14 12:42:13,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 150 transitions, 1436 flow [2024-06-14 12:42:13,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:13,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-14 12:42:13,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39646464646464646 [2024-06-14 12:42:13,070 INFO L175 Difference]: Start difference. First operand has 193 places, 135 transitions, 1088 flow. Second operand 12 states and 157 transitions. [2024-06-14 12:42:13,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 150 transitions, 1436 flow [2024-06-14 12:42:13,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 150 transitions, 1346 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:13,122 INFO L231 Difference]: Finished difference. Result has 192 places, 131 transitions, 1059 flow [2024-06-14 12:42:13,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1059, PETRI_PLACES=192, PETRI_TRANSITIONS=131} [2024-06-14 12:42:13,123 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 160 predicate places. [2024-06-14 12:42:13,123 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 131 transitions, 1059 flow [2024-06-14 12:42:13,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:13,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:13,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:13,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:42:13,124 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)] === [2024-06-14 12:42:13,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:13,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1404241649, now seen corresponding path program 13 times [2024-06-14 12:42:13,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:13,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783820148] [2024-06-14 12:42:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:13,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:14,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:14,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:14,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783820148] [2024-06-14 12:42:14,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783820148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:14,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:14,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:14,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009157405] [2024-06-14 12:42:14,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:14,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:14,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:14,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:14,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:14,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:14,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 131 transitions, 1059 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:14,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:14,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:14,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:14,540 INFO L124 PetriNetUnfolderBase]: 339/723 cut-off events. [2024-06-14 12:42:14,540 INFO L125 PetriNetUnfolderBase]: For 31238/31238 co-relation queries the response was YES. [2024-06-14 12:42:14,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3462 conditions, 723 events. 339/723 cut-off events. For 31238/31238 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3865 event pairs, 86 based on Foata normal form. 8/728 useless extension candidates. Maximal degree in co-relation 3391. Up to 526 conditions per place. [2024-06-14 12:42:14,544 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 96 selfloop transitions, 36 changer transitions 9/145 dead transitions. [2024-06-14 12:42:14,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 145 transitions, 1395 flow [2024-06-14 12:42:14,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:14,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:14,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-14 12:42:14,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4132231404958678 [2024-06-14 12:42:14,545 INFO L175 Difference]: Start difference. First operand has 192 places, 131 transitions, 1059 flow. Second operand 11 states and 150 transitions. [2024-06-14 12:42:14,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 145 transitions, 1395 flow [2024-06-14 12:42:14,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 145 transitions, 1295 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:14,599 INFO L231 Difference]: Finished difference. Result has 186 places, 128 transitions, 1022 flow [2024-06-14 12:42:14,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1022, PETRI_PLACES=186, PETRI_TRANSITIONS=128} [2024-06-14 12:42:14,600 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 154 predicate places. [2024-06-14 12:42:14,600 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 128 transitions, 1022 flow [2024-06-14 12:42:14,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:14,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:14,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:14,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:42:14,601 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)] === [2024-06-14 12:42:14,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1653323549, now seen corresponding path program 14 times [2024-06-14 12:42:14,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:14,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255579822] [2024-06-14 12:42:14,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:14,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:14,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:15,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:15,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:15,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255579822] [2024-06-14 12:42:15,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255579822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:15,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:15,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:15,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248328838] [2024-06-14 12:42:15,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:15,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:15,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:15,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:15,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:15,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:15,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 128 transitions, 1022 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:15,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:15,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:15,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:16,274 INFO L124 PetriNetUnfolderBase]: 330/710 cut-off events. [2024-06-14 12:42:16,274 INFO L125 PetriNetUnfolderBase]: For 26733/26733 co-relation queries the response was YES. [2024-06-14 12:42:16,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3304 conditions, 710 events. 330/710 cut-off events. For 26733/26733 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3822 event pairs, 82 based on Foata normal form. 6/713 useless extension candidates. Maximal degree in co-relation 3235. Up to 513 conditions per place. [2024-06-14 12:42:16,278 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 94 selfloop transitions, 34 changer transitions 10/142 dead transitions. [2024-06-14 12:42:16,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 142 transitions, 1338 flow [2024-06-14 12:42:16,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:16,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:16,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-14 12:42:16,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-14 12:42:16,279 INFO L175 Difference]: Start difference. First operand has 186 places, 128 transitions, 1022 flow. Second operand 11 states and 148 transitions. [2024-06-14 12:42:16,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 142 transitions, 1338 flow [2024-06-14 12:42:16,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 142 transitions, 1262 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:16,326 INFO L231 Difference]: Finished difference. Result has 184 places, 125 transitions, 998 flow [2024-06-14 12:42:16,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=998, PETRI_PLACES=184, PETRI_TRANSITIONS=125} [2024-06-14 12:42:16,326 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 152 predicate places. [2024-06-14 12:42:16,326 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 125 transitions, 998 flow [2024-06-14 12:42:16,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:16,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:16,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:16,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:42:16,327 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)] === [2024-06-14 12:42:16,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash -220333809, now seen corresponding path program 15 times [2024-06-14 12:42:16,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:16,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341128234] [2024-06-14 12:42:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:16,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:17,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:17,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:17,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341128234] [2024-06-14 12:42:17,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341128234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:17,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:17,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:17,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546586338] [2024-06-14 12:42:17,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:17,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:17,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:17,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:17,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:17,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:17,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 125 transitions, 998 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:17,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:17,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:17,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:17,632 INFO L124 PetriNetUnfolderBase]: 316/684 cut-off events. [2024-06-14 12:42:17,633 INFO L125 PetriNetUnfolderBase]: For 23308/23308 co-relation queries the response was YES. [2024-06-14 12:42:17,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3087 conditions, 684 events. 316/684 cut-off events. For 23308/23308 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3621 event pairs, 77 based on Foata normal form. 6/687 useless extension candidates. Maximal degree in co-relation 3019. Up to 470 conditions per place. [2024-06-14 12:42:17,637 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 86 selfloop transitions, 36 changer transitions 15/141 dead transitions. [2024-06-14 12:42:17,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 141 transitions, 1316 flow [2024-06-14 12:42:17,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:17,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:17,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-14 12:42:17,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:42:17,638 INFO L175 Difference]: Start difference. First operand has 184 places, 125 transitions, 998 flow. Second operand 12 states and 154 transitions. [2024-06-14 12:42:17,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 141 transitions, 1316 flow [2024-06-14 12:42:17,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 141 transitions, 1238 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:17,679 INFO L231 Difference]: Finished difference. Result has 181 places, 120 transitions, 961 flow [2024-06-14 12:42:17,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=961, PETRI_PLACES=181, PETRI_TRANSITIONS=120} [2024-06-14 12:42:17,680 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 149 predicate places. [2024-06-14 12:42:17,680 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 120 transitions, 961 flow [2024-06-14 12:42:17,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:17,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:17,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:17,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:42:17,681 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)] === [2024-06-14 12:42:17,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:17,681 INFO L85 PathProgramCache]: Analyzing trace with hash 855641329, now seen corresponding path program 16 times [2024-06-14 12:42:17,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:17,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687465598] [2024-06-14 12:42:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:17,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:18,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:18,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:18,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687465598] [2024-06-14 12:42:18,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687465598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:18,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:18,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:18,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036957941] [2024-06-14 12:42:18,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:18,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:18,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:18,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:18,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:18,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:18,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 120 transitions, 961 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:18,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:18,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:18,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:19,050 INFO L124 PetriNetUnfolderBase]: 307/653 cut-off events. [2024-06-14 12:42:19,051 INFO L125 PetriNetUnfolderBase]: For 23909/23909 co-relation queries the response was YES. [2024-06-14 12:42:19,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2947 conditions, 653 events. 307/653 cut-off events. For 23909/23909 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3369 event pairs, 81 based on Foata normal form. 8/658 useless extension candidates. Maximal degree in co-relation 2881. Up to 468 conditions per place. [2024-06-14 12:42:19,054 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 86 selfloop transitions, 38 changer transitions 9/137 dead transitions. [2024-06-14 12:42:19,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 137 transitions, 1283 flow [2024-06-14 12:42:19,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:19,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:19,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-14 12:42:19,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39646464646464646 [2024-06-14 12:42:19,055 INFO L175 Difference]: Start difference. First operand has 181 places, 120 transitions, 961 flow. Second operand 12 states and 157 transitions. [2024-06-14 12:42:19,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 137 transitions, 1283 flow [2024-06-14 12:42:19,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 137 transitions, 1173 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:19,093 INFO L231 Difference]: Finished difference. Result has 174 places, 119 transitions, 930 flow [2024-06-14 12:42:19,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=930, PETRI_PLACES=174, PETRI_TRANSITIONS=119} [2024-06-14 12:42:19,094 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 142 predicate places. [2024-06-14 12:42:19,094 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 119 transitions, 930 flow [2024-06-14 12:42:19,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:19,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:19,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:19,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:42:19,094 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)] === [2024-06-14 12:42:19,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:19,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1988955445, now seen corresponding path program 17 times [2024-06-14 12:42:19,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:19,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907199952] [2024-06-14 12:42:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:19,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:20,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:20,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:20,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907199952] [2024-06-14 12:42:20,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907199952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:20,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:20,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:20,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593547676] [2024-06-14 12:42:20,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:20,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:20,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:20,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:20,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:20,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:20,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 119 transitions, 930 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:20,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:20,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:20,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:20,833 INFO L124 PetriNetUnfolderBase]: 280/598 cut-off events. [2024-06-14 12:42:20,833 INFO L125 PetriNetUnfolderBase]: For 13501/13501 co-relation queries the response was YES. [2024-06-14 12:42:20,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2342 conditions, 598 events. 280/598 cut-off events. For 13501/13501 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3035 event pairs, 61 based on Foata normal form. 8/603 useless extension candidates. Maximal degree in co-relation 2279. Up to 378 conditions per place. [2024-06-14 12:42:20,838 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 75 selfloop transitions, 43 changer transitions 9/131 dead transitions. [2024-06-14 12:42:20,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 131 transitions, 1210 flow [2024-06-14 12:42:20,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:20,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:42:20,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-14 12:42:20,839 INFO L175 Difference]: Start difference. First operand has 174 places, 119 transitions, 930 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:42:20,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 131 transitions, 1210 flow [2024-06-14 12:42:20,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 131 transitions, 1128 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:20,858 INFO L231 Difference]: Finished difference. Result has 173 places, 115 transitions, 909 flow [2024-06-14 12:42:20,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=848, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=909, PETRI_PLACES=173, PETRI_TRANSITIONS=115} [2024-06-14 12:42:20,858 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 141 predicate places. [2024-06-14 12:42:20,858 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 115 transitions, 909 flow [2024-06-14 12:42:20,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:20,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:20,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:20,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:42:20,859 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)] === [2024-06-14 12:42:20,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:20,859 INFO L85 PathProgramCache]: Analyzing trace with hash -26033159, now seen corresponding path program 1 times [2024-06-14 12:42:20,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:20,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618958806] [2024-06-14 12:42:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:20,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:21,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:21,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618958806] [2024-06-14 12:42:21,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618958806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:21,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:21,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:21,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083160311] [2024-06-14 12:42:21,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:21,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:21,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:21,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:21,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:21,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:21,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 115 transitions, 909 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:21,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:21,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:21,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:22,020 INFO L124 PetriNetUnfolderBase]: 275/591 cut-off events. [2024-06-14 12:42:22,021 INFO L125 PetriNetUnfolderBase]: For 11732/11732 co-relation queries the response was YES. [2024-06-14 12:42:22,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 591 events. 275/591 cut-off events. For 11732/11732 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3012 event pairs, 40 based on Foata normal form. 6/594 useless extension candidates. Maximal degree in co-relation 2245. Up to 347 conditions per place. [2024-06-14 12:42:22,024 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 87 selfloop transitions, 20 changer transitions 19/130 dead transitions. [2024-06-14 12:42:22,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 130 transitions, 1194 flow [2024-06-14 12:42:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:22,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:22,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 12:42:22,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-14 12:42:22,025 INFO L175 Difference]: Start difference. First operand has 173 places, 115 transitions, 909 flow. Second operand 10 states and 127 transitions. [2024-06-14 12:42:22,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 130 transitions, 1194 flow [2024-06-14 12:42:22,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 130 transitions, 1086 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:22,045 INFO L231 Difference]: Finished difference. Result has 169 places, 107 transitions, 782 flow [2024-06-14 12:42:22,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=782, PETRI_PLACES=169, PETRI_TRANSITIONS=107} [2024-06-14 12:42:22,045 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 137 predicate places. [2024-06-14 12:42:22,046 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 107 transitions, 782 flow [2024-06-14 12:42:22,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:22,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:22,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:22,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:42:22,046 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)] === [2024-06-14 12:42:22,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:22,047 INFO L85 PathProgramCache]: Analyzing trace with hash 89430991, now seen corresponding path program 2 times [2024-06-14 12:42:22,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:22,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146790760] [2024-06-14 12:42:22,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:22,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:22,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:22,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:22,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:22,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146790760] [2024-06-14 12:42:22,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146790760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:22,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:22,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:22,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865210819] [2024-06-14 12:42:22,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:22,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:22,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:22,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:22,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:23,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:23,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 107 transitions, 782 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:23,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:23,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:23,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:23,268 INFO L124 PetriNetUnfolderBase]: 243/531 cut-off events. [2024-06-14 12:42:23,269 INFO L125 PetriNetUnfolderBase]: For 11608/11608 co-relation queries the response was YES. [2024-06-14 12:42:23,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 531 events. 243/531 cut-off events. For 11608/11608 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2622 event pairs, 49 based on Foata normal form. 6/534 useless extension candidates. Maximal degree in co-relation 1961. Up to 367 conditions per place. [2024-06-14 12:42:23,272 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 77 selfloop transitions, 26 changer transitions 11/118 dead transitions. [2024-06-14 12:42:23,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 118 transitions, 1034 flow [2024-06-14 12:42:23,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:23,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:23,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 12:42:23,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-14 12:42:23,273 INFO L175 Difference]: Start difference. First operand has 169 places, 107 transitions, 782 flow. Second operand 10 states and 126 transitions. [2024-06-14 12:42:23,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 118 transitions, 1034 flow [2024-06-14 12:42:23,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 118 transitions, 977 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:23,289 INFO L231 Difference]: Finished difference. Result has 159 places, 103 transitions, 753 flow [2024-06-14 12:42:23,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=753, PETRI_PLACES=159, PETRI_TRANSITIONS=103} [2024-06-14 12:42:23,289 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 127 predicate places. [2024-06-14 12:42:23,289 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 103 transitions, 753 flow [2024-06-14 12:42:23,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:23,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:23,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:23,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:42:23,290 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)] === [2024-06-14 12:42:23,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:23,290 INFO L85 PathProgramCache]: Analyzing trace with hash 2028581851, now seen corresponding path program 3 times [2024-06-14 12:42:23,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:23,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20233111] [2024-06-14 12:42:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:23,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:24,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:24,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20233111] [2024-06-14 12:42:24,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20233111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:24,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:24,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:24,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496911230] [2024-06-14 12:42:24,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:24,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:24,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:24,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:24,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:24,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:24,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 103 transitions, 753 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:24,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:24,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:24,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:24,532 INFO L124 PetriNetUnfolderBase]: 234/516 cut-off events. [2024-06-14 12:42:24,532 INFO L125 PetriNetUnfolderBase]: For 10526/10526 co-relation queries the response was YES. [2024-06-14 12:42:24,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1941 conditions, 516 events. 234/516 cut-off events. For 10526/10526 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2540 event pairs, 47 based on Foata normal form. 6/519 useless extension candidates. Maximal degree in co-relation 1885. Up to 339 conditions per place. [2024-06-14 12:42:24,534 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 70 selfloop transitions, 20 changer transitions 21/115 dead transitions. [2024-06-14 12:42:24,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 115 transitions, 1001 flow [2024-06-14 12:42:24,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:24,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:24,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 12:42:24,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-14 12:42:24,535 INFO L175 Difference]: Start difference. First operand has 159 places, 103 transitions, 753 flow. Second operand 10 states and 126 transitions. [2024-06-14 12:42:24,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 115 transitions, 1001 flow [2024-06-14 12:42:24,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 115 transitions, 923 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:24,547 INFO L231 Difference]: Finished difference. Result has 154 places, 90 transitions, 611 flow [2024-06-14 12:42:24,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=611, PETRI_PLACES=154, PETRI_TRANSITIONS=90} [2024-06-14 12:42:24,547 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 122 predicate places. [2024-06-14 12:42:24,547 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 90 transitions, 611 flow [2024-06-14 12:42:24,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:24,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:24,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:24,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:42:24,548 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)] === [2024-06-14 12:42:24,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:24,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1372041601, now seen corresponding path program 4 times [2024-06-14 12:42:24,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:24,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763811469] [2024-06-14 12:42:24,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:24,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:25,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:25,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763811469] [2024-06-14 12:42:25,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763811469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:25,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:25,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:25,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925191116] [2024-06-14 12:42:25,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:25,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:25,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:25,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:25,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:25,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:25,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 90 transitions, 611 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:25,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:25,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:25,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:26,092 INFO L124 PetriNetUnfolderBase]: 215/471 cut-off events. [2024-06-14 12:42:26,093 INFO L125 PetriNetUnfolderBase]: For 9439/9439 co-relation queries the response was YES. [2024-06-14 12:42:26,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1686 conditions, 471 events. 215/471 cut-off events. For 9439/9439 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2226 event pairs, 44 based on Foata normal form. 6/476 useless extension candidates. Maximal degree in co-relation 1633. Up to 288 conditions per place. [2024-06-14 12:42:26,095 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 58 selfloop transitions, 31 changer transitions 13/106 dead transitions. [2024-06-14 12:42:26,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 106 transitions, 862 flow [2024-06-14 12:42:26,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 12:42:26,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3746556473829201 [2024-06-14 12:42:26,096 INFO L175 Difference]: Start difference. First operand has 154 places, 90 transitions, 611 flow. Second operand 11 states and 136 transitions. [2024-06-14 12:42:26,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 106 transitions, 862 flow [2024-06-14 12:42:26,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 106 transitions, 761 flow, removed 2 selfloop flow, removed 17 redundant places. [2024-06-14 12:42:26,107 INFO L231 Difference]: Finished difference. Result has 140 places, 89 transitions, 575 flow [2024-06-14 12:42:26,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=575, PETRI_PLACES=140, PETRI_TRANSITIONS=89} [2024-06-14 12:42:26,107 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 108 predicate places. [2024-06-14 12:42:26,107 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 89 transitions, 575 flow [2024-06-14 12:42:26,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:26,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:26,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:26,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:42:26,108 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)] === [2024-06-14 12:42:26,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:26,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1341714655, now seen corresponding path program 5 times [2024-06-14 12:42:26,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:26,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872943255] [2024-06-14 12:42:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:26,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:27,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:27,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872943255] [2024-06-14 12:42:27,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872943255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:27,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:27,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:27,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948511202] [2024-06-14 12:42:27,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:27,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:27,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:27,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:27,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:27,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:27,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 89 transitions, 575 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:27,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:27,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:27,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:27,633 INFO L124 PetriNetUnfolderBase]: 204/448 cut-off events. [2024-06-14 12:42:27,633 INFO L125 PetriNetUnfolderBase]: For 8987/8987 co-relation queries the response was YES. [2024-06-14 12:42:27,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 448 events. 204/448 cut-off events. For 8987/8987 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2078 event pairs, 42 based on Foata normal form. 6/453 useless extension candidates. Maximal degree in co-relation 1512. Up to 270 conditions per place. [2024-06-14 12:42:27,635 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 57 selfloop transitions, 28 changer transitions 13/102 dead transitions. [2024-06-14 12:42:27,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 102 transitions, 799 flow [2024-06-14 12:42:27,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:27,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:42:27,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 12:42:27,636 INFO L175 Difference]: Start difference. First operand has 140 places, 89 transitions, 575 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:42:27,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 102 transitions, 799 flow [2024-06-14 12:42:27,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 102 transitions, 731 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:42:27,647 INFO L231 Difference]: Finished difference. Result has 138 places, 85 transitions, 542 flow [2024-06-14 12:42:27,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=542, PETRI_PLACES=138, PETRI_TRANSITIONS=85} [2024-06-14 12:42:27,647 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 106 predicate places. [2024-06-14 12:42:27,647 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 85 transitions, 542 flow [2024-06-14 12:42:27,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:27,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:27,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:27,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:42:27,648 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)] === [2024-06-14 12:42:27,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:27,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1106336837, now seen corresponding path program 6 times [2024-06-14 12:42:27,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:27,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572787839] [2024-06-14 12:42:27,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:27,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:28,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:28,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572787839] [2024-06-14 12:42:28,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572787839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:28,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:28,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:28,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638285856] [2024-06-14 12:42:28,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:28,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:28,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:28,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:28,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:28,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:28,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 85 transitions, 542 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:28,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:28,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:28,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:29,195 INFO L124 PetriNetUnfolderBase]: 193/427 cut-off events. [2024-06-14 12:42:29,196 INFO L125 PetriNetUnfolderBase]: For 8967/8967 co-relation queries the response was YES. [2024-06-14 12:42:29,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 427 events. 193/427 cut-off events. For 8967/8967 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1934 event pairs, 38 based on Foata normal form. 6/432 useless extension candidates. Maximal degree in co-relation 1436. Up to 244 conditions per place. [2024-06-14 12:42:29,197 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 53 selfloop transitions, 23 changer transitions 19/99 dead transitions. [2024-06-14 12:42:29,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 99 transitions, 762 flow [2024-06-14 12:42:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:29,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:29,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:42:29,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 12:42:29,198 INFO L175 Difference]: Start difference. First operand has 138 places, 85 transitions, 542 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:42:29,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 99 transitions, 762 flow [2024-06-14 12:42:29,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 99 transitions, 690 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-14 12:42:29,208 INFO L231 Difference]: Finished difference. Result has 133 places, 77 transitions, 474 flow [2024-06-14 12:42:29,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=474, PETRI_PLACES=133, PETRI_TRANSITIONS=77} [2024-06-14 12:42:29,215 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 101 predicate places. [2024-06-14 12:42:29,215 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 77 transitions, 474 flow [2024-06-14 12:42:29,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:29,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:29,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:29,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:42:29,216 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)] === [2024-06-14 12:42:29,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:29,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1383907457, now seen corresponding path program 7 times [2024-06-14 12:42:29,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:29,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694331457] [2024-06-14 12:42:29,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:29,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:30,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:30,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694331457] [2024-06-14 12:42:30,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694331457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:30,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:30,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:30,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513263597] [2024-06-14 12:42:30,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:30,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:30,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:30,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:30,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:30,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:30,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 77 transitions, 474 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:30,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:30,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:30,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:30,831 INFO L124 PetriNetUnfolderBase]: 172/386 cut-off events. [2024-06-14 12:42:30,832 INFO L125 PetriNetUnfolderBase]: For 8959/8967 co-relation queries the response was YES. [2024-06-14 12:42:30,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 386 events. 172/386 cut-off events. For 8959/8967 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1721 event pairs, 32 based on Foata normal form. 10/395 useless extension candidates. Maximal degree in co-relation 1294. Up to 204 conditions per place. [2024-06-14 12:42:30,834 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 49 selfloop transitions, 26 changer transitions 12/91 dead transitions. [2024-06-14 12:42:30,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 91 transitions, 678 flow [2024-06-14 12:42:30,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:30,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:30,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 12:42:30,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774104683195592 [2024-06-14 12:42:30,835 INFO L175 Difference]: Start difference. First operand has 133 places, 77 transitions, 474 flow. Second operand 11 states and 137 transitions. [2024-06-14 12:42:30,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 91 transitions, 678 flow [2024-06-14 12:42:30,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 91 transitions, 624 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 12:42:30,843 INFO L231 Difference]: Finished difference. Result has 126 places, 73 transitions, 455 flow [2024-06-14 12:42:30,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=455, PETRI_PLACES=126, PETRI_TRANSITIONS=73} [2024-06-14 12:42:30,843 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 94 predicate places. [2024-06-14 12:42:30,843 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 73 transitions, 455 flow [2024-06-14 12:42:30,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:30,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:30,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:30,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:42:30,844 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)] === [2024-06-14 12:42:30,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:30,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1554015241, now seen corresponding path program 8 times [2024-06-14 12:42:30,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:30,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98388305] [2024-06-14 12:42:30,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:30,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:31,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:31,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98388305] [2024-06-14 12:42:31,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98388305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:31,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:31,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:31,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509219066] [2024-06-14 12:42:31,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:31,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:31,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:31,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:31,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:32,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:32,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 73 transitions, 455 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:32,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:32,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:32,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:32,304 INFO L124 PetriNetUnfolderBase]: 158/360 cut-off events. [2024-06-14 12:42:32,304 INFO L125 PetriNetUnfolderBase]: For 7585/7591 co-relation queries the response was YES. [2024-06-14 12:42:32,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 360 events. 158/360 cut-off events. For 7585/7591 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1548 event pairs, 32 based on Foata normal form. 8/367 useless extension candidates. Maximal degree in co-relation 1220. Up to 200 conditions per place. [2024-06-14 12:42:32,306 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 44 selfloop transitions, 21 changer transitions 17/86 dead transitions. [2024-06-14 12:42:32,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 86 transitions, 647 flow [2024-06-14 12:42:32,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:42:32,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-14 12:42:32,307 INFO L175 Difference]: Start difference. First operand has 126 places, 73 transitions, 455 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:42:32,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 86 transitions, 647 flow [2024-06-14 12:42:32,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 86 transitions, 587 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:32,314 INFO L231 Difference]: Finished difference. Result has 120 places, 66 transitions, 395 flow [2024-06-14 12:42:32,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=395, PETRI_PLACES=120, PETRI_TRANSITIONS=66} [2024-06-14 12:42:32,314 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 88 predicate places. [2024-06-14 12:42:32,314 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 66 transitions, 395 flow [2024-06-14 12:42:32,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:32,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:32,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:32,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:42:32,315 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)] === [2024-06-14 12:42:32,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:32,315 INFO L85 PathProgramCache]: Analyzing trace with hash 917499519, now seen corresponding path program 9 times [2024-06-14 12:42:32,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:32,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947337394] [2024-06-14 12:42:32,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:32,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:33,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:33,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947337394] [2024-06-14 12:42:33,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947337394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:33,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:33,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:33,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576377583] [2024-06-14 12:42:33,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:33,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:33,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:33,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:33,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:33,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:33,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 66 transitions, 395 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:33,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:33,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:33,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:33,670 INFO L124 PetriNetUnfolderBase]: 142/332 cut-off events. [2024-06-14 12:42:33,670 INFO L125 PetriNetUnfolderBase]: For 6345/6345 co-relation queries the response was YES. [2024-06-14 12:42:33,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1140 conditions, 332 events. 142/332 cut-off events. For 6345/6345 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1406 event pairs, 17 based on Foata normal form. 6/337 useless extension candidates. Maximal degree in co-relation 1098. Up to 102 conditions per place. [2024-06-14 12:42:33,672 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 30 selfloop transitions, 24 changer transitions 23/81 dead transitions. [2024-06-14 12:42:33,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 81 transitions, 581 flow [2024-06-14 12:42:33,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:33,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 12:42:33,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36639118457300274 [2024-06-14 12:42:33,673 INFO L175 Difference]: Start difference. First operand has 120 places, 66 transitions, 395 flow. Second operand 11 states and 133 transitions. [2024-06-14 12:42:33,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 81 transitions, 581 flow [2024-06-14 12:42:33,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 81 transitions, 531 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:42:33,678 INFO L231 Difference]: Finished difference. Result has 113 places, 53 transitions, 318 flow [2024-06-14 12:42:33,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=318, PETRI_PLACES=113, PETRI_TRANSITIONS=53} [2024-06-14 12:42:33,679 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 81 predicate places. [2024-06-14 12:42:33,679 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 53 transitions, 318 flow [2024-06-14 12:42:33,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:33,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:33,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:33,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:42:33,680 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)] === [2024-06-14 12:42:33,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2128226773, now seen corresponding path program 10 times [2024-06-14 12:42:33,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:33,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901331000] [2024-06-14 12:42:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:33,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:34,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:34,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901331000] [2024-06-14 12:42:34,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901331000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:34,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:34,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:34,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197907591] [2024-06-14 12:42:34,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:34,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:34,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:34,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:34,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:34,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:34,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 53 transitions, 318 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:34,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:34,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:34,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:35,083 INFO L124 PetriNetUnfolderBase]: 107/245 cut-off events. [2024-06-14 12:42:35,084 INFO L125 PetriNetUnfolderBase]: For 5488/5492 co-relation queries the response was YES. [2024-06-14 12:42:35,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 896 conditions, 245 events. 107/245 cut-off events. For 5488/5492 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 925 event pairs, 23 based on Foata normal form. 6/251 useless extension candidates. Maximal degree in co-relation 856. Up to 144 conditions per place. [2024-06-14 12:42:35,085 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 36 selfloop transitions, 15 changer transitions 11/66 dead transitions. [2024-06-14 12:42:35,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 66 transitions, 470 flow [2024-06-14 12:42:35,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:35,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:35,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 12:42:35,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-14 12:42:35,086 INFO L175 Difference]: Start difference. First operand has 113 places, 53 transitions, 318 flow. Second operand 12 states and 141 transitions. [2024-06-14 12:42:35,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 66 transitions, 470 flow [2024-06-14 12:42:35,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 66 transitions, 397 flow, removed 8 selfloop flow, removed 17 redundant places. [2024-06-14 12:42:35,089 INFO L231 Difference]: Finished difference. Result has 95 places, 49 transitions, 260 flow [2024-06-14 12:42:35,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=260, PETRI_PLACES=95, PETRI_TRANSITIONS=49} [2024-06-14 12:42:35,090 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2024-06-14 12:42:35,090 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 49 transitions, 260 flow [2024-06-14 12:42:35,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:35,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:35,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:35,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:42:35,091 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)] === [2024-06-14 12:42:35,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:35,091 INFO L85 PathProgramCache]: Analyzing trace with hash -413959811, now seen corresponding path program 11 times [2024-06-14 12:42:35,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:35,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470262226] [2024-06-14 12:42:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:35,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:36,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:36,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:36,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470262226] [2024-06-14 12:42:36,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470262226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:36,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:36,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:36,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491697248] [2024-06-14 12:42:36,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:36,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:36,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:36,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:36,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:36,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:36,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 49 transitions, 260 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:36,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:36,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:36,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:36,860 INFO L124 PetriNetUnfolderBase]: 99/227 cut-off events. [2024-06-14 12:42:36,861 INFO L125 PetriNetUnfolderBase]: For 3502/3506 co-relation queries the response was YES. [2024-06-14 12:42:36,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 227 events. 99/227 cut-off events. For 3502/3506 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 826 event pairs, 23 based on Foata normal form. 6/233 useless extension candidates. Maximal degree in co-relation 734. Up to 134 conditions per place. [2024-06-14 12:42:36,862 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 34 selfloop transitions, 14 changer transitions 10/62 dead transitions. [2024-06-14 12:42:36,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 62 transitions, 404 flow [2024-06-14 12:42:36,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:36,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:36,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 12:42:36,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351010101010101 [2024-06-14 12:42:36,863 INFO L175 Difference]: Start difference. First operand has 95 places, 49 transitions, 260 flow. Second operand 12 states and 139 transitions. [2024-06-14 12:42:36,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 62 transitions, 404 flow [2024-06-14 12:42:36,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 62 transitions, 370 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:36,867 INFO L231 Difference]: Finished difference. Result has 91 places, 46 transitions, 243 flow [2024-06-14 12:42:36,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=243, PETRI_PLACES=91, PETRI_TRANSITIONS=46} [2024-06-14 12:42:36,868 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2024-06-14 12:42:36,868 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 46 transitions, 243 flow [2024-06-14 12:42:36,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:36,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:36,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:36,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:42:36,868 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)] === [2024-06-14 12:42:36,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:36,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1797407803, now seen corresponding path program 12 times [2024-06-14 12:42:36,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:36,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995123831] [2024-06-14 12:42:36,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:36,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:38,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:38,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995123831] [2024-06-14 12:42:38,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995123831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:38,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:38,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:38,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952661712] [2024-06-14 12:42:38,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:38,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:38,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:38,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:38,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:38,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:38,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 46 transitions, 243 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:38,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:38,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:38,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:38,329 INFO L124 PetriNetUnfolderBase]: 92/214 cut-off events. [2024-06-14 12:42:38,329 INFO L125 PetriNetUnfolderBase]: For 3222/3226 co-relation queries the response was YES. [2024-06-14 12:42:38,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 214 events. 92/214 cut-off events. For 3222/3226 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 759 event pairs, 21 based on Foata normal form. 10/224 useless extension candidates. Maximal degree in co-relation 690. Up to 110 conditions per place. [2024-06-14 12:42:38,333 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 31 selfloop transitions, 14 changer transitions 10/59 dead transitions. [2024-06-14 12:42:38,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 59 transitions, 381 flow [2024-06-14 12:42:38,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:38,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 12:42:38,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3608815426997245 [2024-06-14 12:42:38,334 INFO L175 Difference]: Start difference. First operand has 91 places, 46 transitions, 243 flow. Second operand 11 states and 131 transitions. [2024-06-14 12:42:38,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 59 transitions, 381 flow [2024-06-14 12:42:38,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 59 transitions, 347 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:38,337 INFO L231 Difference]: Finished difference. Result has 86 places, 42 transitions, 222 flow [2024-06-14 12:42:38,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=222, PETRI_PLACES=86, PETRI_TRANSITIONS=42} [2024-06-14 12:42:38,337 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 54 predicate places. [2024-06-14 12:42:38,338 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 42 transitions, 222 flow [2024-06-14 12:42:38,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:38,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:38,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:38,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:42:38,338 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)] === [2024-06-14 12:42:38,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:38,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1386822025, now seen corresponding path program 13 times [2024-06-14 12:42:38,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:38,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720549932] [2024-06-14 12:42:38,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:38,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:39,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:39,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720549932] [2024-06-14 12:42:39,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720549932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:39,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:39,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:42:39,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506575390] [2024-06-14 12:42:39,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:39,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:42:39,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:39,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:42:39,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:42:39,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:39,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 42 transitions, 222 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:39,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:39,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:39,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:39,793 INFO L124 PetriNetUnfolderBase]: 81/191 cut-off events. [2024-06-14 12:42:39,794 INFO L125 PetriNetUnfolderBase]: For 2694/2698 co-relation queries the response was YES. [2024-06-14 12:42:39,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 191 events. 81/191 cut-off events. For 2694/2698 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 622 event pairs, 19 based on Foata normal form. 6/197 useless extension candidates. Maximal degree in co-relation 622. Up to 98 conditions per place. [2024-06-14 12:42:39,795 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 26 selfloop transitions, 9 changer transitions 17/56 dead transitions. [2024-06-14 12:42:39,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 56 transitions, 356 flow [2024-06-14 12:42:39,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:39,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 12:42:39,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.351010101010101 [2024-06-14 12:42:39,796 INFO L175 Difference]: Start difference. First operand has 86 places, 42 transitions, 222 flow. Second operand 12 states and 139 transitions. [2024-06-14 12:42:39,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 56 transitions, 356 flow [2024-06-14 12:42:39,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 56 transitions, 322 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:39,798 INFO L231 Difference]: Finished difference. Result has 82 places, 36 transitions, 181 flow [2024-06-14 12:42:39,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=181, PETRI_PLACES=82, PETRI_TRANSITIONS=36} [2024-06-14 12:42:39,798 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 50 predicate places. [2024-06-14 12:42:39,799 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 36 transitions, 181 flow [2024-06-14 12:42:39,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:39,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:39,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:39,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:42:39,799 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)] === [2024-06-14 12:42:39,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:39,799 INFO L85 PathProgramCache]: Analyzing trace with hash -582063249, now seen corresponding path program 14 times [2024-06-14 12:42:39,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:39,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25990039] [2024-06-14 12:42:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:39,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:40,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:40,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:40,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25990039] [2024-06-14 12:42:40,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25990039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:40,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:40,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:40,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186912030] [2024-06-14 12:42:40,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:40,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:40,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:40,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:40,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:41,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:41,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 36 transitions, 181 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:41,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:41,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:41,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:41,323 INFO L124 PetriNetUnfolderBase]: 68/160 cut-off events. [2024-06-14 12:42:41,323 INFO L125 PetriNetUnfolderBase]: For 2186/2190 co-relation queries the response was YES. [2024-06-14 12:42:41,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 160 events. 68/160 cut-off events. For 2186/2190 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 470 event pairs, 19 based on Foata normal form. 10/170 useless extension candidates. Maximal degree in co-relation 520. Up to 88 conditions per place. [2024-06-14 12:42:41,324 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 23 selfloop transitions, 9 changer transitions 12/48 dead transitions. [2024-06-14 12:42:41,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 48 transitions, 295 flow [2024-06-14 12:42:41,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:41,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 12:42:41,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-14 12:42:41,325 INFO L175 Difference]: Start difference. First operand has 82 places, 36 transitions, 181 flow. Second operand 11 states and 128 transitions. [2024-06-14 12:42:41,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 48 transitions, 295 flow [2024-06-14 12:42:41,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 48 transitions, 267 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:41,327 INFO L231 Difference]: Finished difference. Result has 72 places, 31 transitions, 152 flow [2024-06-14 12:42:41,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=152, PETRI_PLACES=72, PETRI_TRANSITIONS=31} [2024-06-14 12:42:41,327 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 40 predicate places. [2024-06-14 12:42:41,327 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 31 transitions, 152 flow [2024-06-14 12:42:41,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:41,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:41,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:41,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:42:41,328 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)] === [2024-06-14 12:42:41,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:41,328 INFO L85 PathProgramCache]: Analyzing trace with hash -85807411, now seen corresponding path program 15 times [2024-06-14 12:42:41,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:41,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745710058] [2024-06-14 12:42:41,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:41,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:42,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:42,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:42,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745710058] [2024-06-14 12:42:42,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745710058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:42,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:42,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:42,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547909667] [2024-06-14 12:42:42,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:42,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:42,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:42,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:42,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:42,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 31 transitions, 152 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:42,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:42,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:42,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:42,831 INFO L124 PetriNetUnfolderBase]: 59/139 cut-off events. [2024-06-14 12:42:42,831 INFO L125 PetriNetUnfolderBase]: For 1358/1358 co-relation queries the response was YES. [2024-06-14 12:42:42,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 139 events. 59/139 cut-off events. For 1358/1358 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 377 event pairs, 19 based on Foata normal form. 6/145 useless extension candidates. Maximal degree in co-relation 442. Up to 78 conditions per place. [2024-06-14 12:42:42,832 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 21 selfloop transitions, 8 changer transitions 10/43 dead transitions. [2024-06-14 12:42:42,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 43 transitions, 256 flow [2024-06-14 12:42:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 12:42:42,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-14 12:42:42,833 INFO L175 Difference]: Start difference. First operand has 72 places, 31 transitions, 152 flow. Second operand 11 states and 126 transitions. [2024-06-14 12:42:42,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 43 transitions, 256 flow [2024-06-14 12:42:42,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 43 transitions, 232 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:42,834 INFO L231 Difference]: Finished difference. Result has 66 places, 28 transitions, 133 flow [2024-06-14 12:42:42,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=133, PETRI_PLACES=66, PETRI_TRANSITIONS=28} [2024-06-14 12:42:42,834 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 34 predicate places. [2024-06-14 12:42:42,834 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 28 transitions, 133 flow [2024-06-14 12:42:42,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:42,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:42,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:42,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:42:42,835 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)] === [2024-06-14 12:42:42,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:42,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1599292187, now seen corresponding path program 16 times [2024-06-14 12:42:42,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:42,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287723602] [2024-06-14 12:42:42,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:42,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:43,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:43,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287723602] [2024-06-14 12:42:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287723602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:43,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:43,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:43,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465481738] [2024-06-14 12:42:43,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:43,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:43,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:43,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:43,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:44,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:44,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 28 transitions, 133 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:44,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:44,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:44,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:44,277 INFO L124 PetriNetUnfolderBase]: 52/126 cut-off events. [2024-06-14 12:42:44,277 INFO L125 PetriNetUnfolderBase]: For 1182/1182 co-relation queries the response was YES. [2024-06-14 12:42:44,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 126 events. 52/126 cut-off events. For 1182/1182 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 317 event pairs, 17 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 396. Up to 60 conditions per place. [2024-06-14 12:42:44,277 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 18 selfloop transitions, 6 changer transitions 13/41 dead transitions. [2024-06-14 12:42:44,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 41 transitions, 235 flow [2024-06-14 12:42:44,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:44,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:44,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 12:42:44,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34710743801652894 [2024-06-14 12:42:44,279 INFO L175 Difference]: Start difference. First operand has 66 places, 28 transitions, 133 flow. Second operand 11 states and 126 transitions. [2024-06-14 12:42:44,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 41 transitions, 235 flow [2024-06-14 12:42:44,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 41 transitions, 213 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:44,280 INFO L231 Difference]: Finished difference. Result has 62 places, 24 transitions, 108 flow [2024-06-14 12:42:44,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=108, PETRI_PLACES=62, PETRI_TRANSITIONS=24} [2024-06-14 12:42:44,280 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2024-06-14 12:42:44,280 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 24 transitions, 108 flow [2024-06-14 12:42:44,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:44,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:44,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:44,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:42:44,281 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)] === [2024-06-14 12:42:44,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:44,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1428589757, now seen corresponding path program 17 times [2024-06-14 12:42:44,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:44,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189720817] [2024-06-14 12:42:44,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:44,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:45,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:45,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189720817] [2024-06-14 12:42:45,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189720817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:45,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:45,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:45,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983125432] [2024-06-14 12:42:45,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:45,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:45,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:45,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:45,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:45,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:45,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 24 transitions, 108 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:45,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:45,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:45,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:45,552 INFO L124 PetriNetUnfolderBase]: 26/72 cut-off events. [2024-06-14 12:42:45,552 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2024-06-14 12:42:45,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 72 events. 26/72 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 109 event pairs, 0 based on Foata normal form. 6/78 useless extension candidates. Maximal degree in co-relation 180. Up to 24 conditions per place. [2024-06-14 12:42:45,552 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-14 12:42:45,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 33 transitions, 160 flow [2024-06-14 12:42:45,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:45,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:45,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-14 12:42:45,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.325068870523416 [2024-06-14 12:42:45,553 INFO L175 Difference]: Start difference. First operand has 62 places, 24 transitions, 108 flow. Second operand 11 states and 118 transitions. [2024-06-14 12:42:45,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 33 transitions, 160 flow [2024-06-14 12:42:45,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 33 transitions, 130 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-14 12:42:45,554 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-06-14 12:42:45,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2024-06-14 12:42:45,554 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2024-06-14 12:42:45,554 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-06-14 12:42:45,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:45,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 12:42:45,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 12:42:45,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 12:42:45,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 12:42:45,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:42:45,557 INFO L445 BasicCegarLoop]: Path program histogram: [17, 17, 16, 12, 8, 6, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:45,559 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 12:42:45,559 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 12:42:45,562 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 12:42:45,562 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 12:42:45,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 12:42:45 BasicIcfg [2024-06-14 12:42:45,563 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 12:42:45,563 INFO L158 Benchmark]: Toolchain (without parser) took 137408.39ms. Allocated memory was 188.7MB in the beginning and 1.1GB in the end (delta: 954.2MB). Free memory was 158.5MB in the beginning and 472.5MB in the end (delta: -314.0MB). Peak memory consumption was 641.8MB. Max. memory is 16.1GB. [2024-06-14 12:42:45,563 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 188.7MB. Free memory is still 147.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:42:45,563 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 157.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:42:45,564 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.32ms. Allocated memory is still 188.7MB. Free memory was 158.0MB in the beginning and 124.4MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-14 12:42:45,564 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.96ms. Allocated memory is still 188.7MB. Free memory was 124.4MB in the beginning and 121.7MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 12:42:45,564 INFO L158 Benchmark]: Boogie Preprocessor took 71.93ms. Allocated memory is still 188.7MB. Free memory was 121.7MB in the beginning and 118.3MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:42:45,564 INFO L158 Benchmark]: RCFGBuilder took 638.63ms. Allocated memory is still 188.7MB. Free memory was 118.3MB in the beginning and 69.3MB in the end (delta: 49.1MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-06-14 12:42:45,564 INFO L158 Benchmark]: TraceAbstraction took 136114.98ms. Allocated memory was 188.7MB in the beginning and 1.1GB in the end (delta: 954.2MB). Free memory was 68.6MB in the beginning and 472.5MB in the end (delta: -403.8MB). Peak memory consumption was 551.6MB. Max. memory is 16.1GB. [2024-06-14 12:42:45,565 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 0.19ms. Allocated memory is still 188.7MB. Free memory is still 147.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 157.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 518.32ms. Allocated memory is still 188.7MB. Free memory was 158.0MB in the beginning and 124.4MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.96ms. Allocated memory is still 188.7MB. Free memory was 124.4MB in the beginning and 121.7MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.93ms. Allocated memory is still 188.7MB. Free memory was 121.7MB in the beginning and 118.3MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 638.63ms. Allocated memory is still 188.7MB. Free memory was 118.3MB in the beginning and 69.3MB in the end (delta: 49.1MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 136114.98ms. Allocated memory was 188.7MB in the beginning and 1.1GB in the end (delta: 954.2MB). Free memory was 68.6MB in the beginning and 472.5MB in the end (delta: -403.8MB). Peak memory consumption was 551.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 816]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 817]: 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, 53 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: 136.0s, OverallIterations: 109, TraceHistogramMax: 1, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 39.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7094 SdHoareTripleChecker+Valid, 22.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6014 mSDsluCounter, 4047 SdHoareTripleChecker+Invalid, 19.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3594 mSDsCounter, 1093 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40944 IncrementalHoareTripleChecker+Invalid, 42037 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1093 mSolverCounterUnsat, 453 mSDtfsCounter, 40944 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1188 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2587 ImplicationChecksByTransitivity, 32.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1500occurred in iteration=59, InterpolantAutomatonStates: 1046, 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: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 94.6s InterpolantComputationTime, 2003 NumberOfCodeBlocks, 2003 NumberOfCodeBlocksAsserted, 109 NumberOfCheckSat, 1894 ConstructedInterpolants, 0 QuantifiedInterpolants, 88804 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 109 InterpolantComputations, 109 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! [2024-06-14 12:42:45,638 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