./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_power.opt_pso.opt_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/safe029_power.opt_pso.opt_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/safe029_power.opt_pso.opt_rmo.opt.i ./goblint.2024-05-21_14-57-05.files/protection/safe029_power.opt_pso.opt_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 13:33:54,681 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 13:33:54,747 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 13:33:54,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 13:33:54,751 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 13:33:54,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 13:33:54,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 13:33:54,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 13:33:54,777 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 13:33:54,782 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 13:33:54,782 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 13:33:54,782 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 13:33:54,783 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 13:33:54,784 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 13:33:54,784 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 13:33:54,785 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 13:33:54,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 13:33:54,785 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 13:33:54,785 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 13:33:54,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 13:33:54,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 13:33:54,786 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 13:33:54,786 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 13:33:54,787 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 13:33:54,787 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 13:33:54,787 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 13:33:54,788 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 13:33:54,788 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 13:33:54,788 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 13:33:54,788 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 13:33:54,789 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 13:33:54,789 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 13:33:54,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:33:54,790 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 13:33:54,790 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 13:33:54,790 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 13:33:54,790 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 13:33:54,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 13:33:54,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 13:33:54,791 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 13:33:54,791 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 13:33:54,791 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 13:33:54,792 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 13:33:54,792 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 13:33:54,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 13:33:55,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 13:33:55,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 13:33:55,013 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 13:33:55,014 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 13:33:55,015 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe029_power.opt_pso.opt_rmo.opt.yml/witness.yml [2024-06-14 13:33:55,140 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 13:33:55,145 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 13:33:55,146 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2024-06-14 13:33:56,118 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 13:33:56,390 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 13:33:56,390 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_power.opt_pso.opt_rmo.opt.i [2024-06-14 13:33:56,424 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066f0b7ab/b19ed6e3a9384f2896b9d5da1b8f9043/FLAGd2256594c [2024-06-14 13:33:56,442 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/066f0b7ab/b19ed6e3a9384f2896b9d5da1b8f9043 [2024-06-14 13:33:56,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 13:33:56,446 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 13:33:56,448 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 13:33:56,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 13:33:56,453 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 13:33:56,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:33:55" (1/2) ... [2024-06-14 13:33:56,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522f9a42 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:33:56, skipping insertion in model container [2024-06-14 13:33:56,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:33:55" (1/2) ... [2024-06-14 13:33:56,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@69b7a364 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 01:33:56, skipping insertion in model container [2024-06-14 13:33:56,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:33:56" (2/2) ... [2024-06-14 13:33:56,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522f9a42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:56, skipping insertion in model container [2024-06-14 13:33:56,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 01:33:56" (2/2) ... [2024-06-14 13:33:56,458 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 13:33:56,523 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 13:33:56,524 INFO L97 edCorrectnessWitness]: Location invariant before [L793-L793] ((((((((((((! multithreaded || x$r_buff0_thd1 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-06-14 13:33:56,525 INFO L97 edCorrectnessWitness]: Location invariant before [L794-L794] ((((((((((((! multithreaded || x$r_buff0_thd1 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((((0 <= x$w_buff1 && x$w_buff1 <= 2) && x$w_buff1 <= 127) && x$w_buff1 % 2 == 0) && (x$w_buff1 == 0 || x$w_buff1 == 2)))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((((0 <= x$w_buff0 && x$w_buff0 <= 2) && x$w_buff0 <= 127) && x$w_buff0 % 2 == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x && x <= 2) && x <= 127) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (((0 <= x$mem_tmp && x$mem_tmp <= 2) && x$mem_tmp <= 127) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0) [2024-06-14 13:33:56,525 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 13:33:56,525 INFO L106 edCorrectnessWitness]: ghost_update [L791-L791] multithreaded = 1; [2024-06-14 13:33:56,571 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 13:33:56,900 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:33:56,915 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 13:33:57,019 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 13:33:57,052 INFO L206 MainTranslator]: Completed translation [2024-06-14 13:33:57,053 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:57 WrapperNode [2024-06-14 13:33:57,053 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 13:33:57,054 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 13:33:57,054 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 13:33:57,054 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 13:33:57,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:57" (1/1) ... [2024-06-14 13:33:57,075 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:57" (1/1) ... [2024-06-14 13:33:57,115 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 130 [2024-06-14 13:33:57,115 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 13:33:57,116 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 13:33:57,116 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 13:33:57,116 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 13:33:57,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:57" (1/1) ... [2024-06-14 13:33:57,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:57" (1/1) ... [2024-06-14 13:33:57,132 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:57" (1/1) ... [2024-06-14 13:33:57,153 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 13:33:57,153 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:57" (1/1) ... [2024-06-14 13:33:57,153 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:57" (1/1) ... [2024-06-14 13:33:57,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:57" (1/1) ... [2024-06-14 13:33:57,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:57" (1/1) ... [2024-06-14 13:33:57,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:57" (1/1) ... [2024-06-14 13:33:57,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:57" (1/1) ... [2024-06-14 13:33:57,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 13:33:57,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 13:33:57,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 13:33:57,176 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 13:33:57,177 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:57" (1/1) ... [2024-06-14 13:33:57,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 13:33:57,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 13:33:57,254 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 13:33:57,297 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 13:33:57,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 13:33:57,336 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 13:33:57,337 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 13:33:57,337 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 13:33:57,337 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 13:33:57,338 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 13:33:57,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 13:33:57,339 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 13:33:57,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 13:33:57,339 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 13:33:57,341 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 13:33:57,435 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 13:33:57,436 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 13:33:57,681 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 13:33:57,682 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 13:33:57,852 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 13:33:57,852 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 13:33:57,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:33:57 BoogieIcfgContainer [2024-06-14 13:33:57,853 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 13:33:57,854 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 13:33:57,854 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 13:33:57,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 13:33:57,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 01:33:55" (1/4) ... [2024-06-14 13:33:57,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5577b374 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 01:33:57, skipping insertion in model container [2024-06-14 13:33:57,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 01:33:56" (2/4) ... [2024-06-14 13:33:57,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5577b374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:33:57, skipping insertion in model container [2024-06-14 13:33:57,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 01:33:57" (3/4) ... [2024-06-14 13:33:57,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5577b374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 01:33:57, skipping insertion in model container [2024-06-14 13:33:57,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 01:33:57" (4/4) ... [2024-06-14 13:33:57,860 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_power.opt_pso.opt_rmo.opt.i [2024-06-14 13:33:57,874 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 13:33:57,874 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 13:33:57,874 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 13:33:57,903 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 13:33:57,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-14 13:33:57,953 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-14 13:33:57,954 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:33:57,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 13:33:57,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-14 13:33:57,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-14 13:33:57,968 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 13:33:57,973 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;@7c9ff089, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 13:33:57,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 13:33:57,976 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 13:33:57,976 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 13:33:57,977 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 13:33:57,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:33:57,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 13:33:57,978 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 13:33:57,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:33:57,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1322329521, now seen corresponding path program 1 times [2024-06-14 13:33:57,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:33:57,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433688300] [2024-06-14 13:33:57,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:33:57,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:33:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:33:58,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:33:58,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:33:58,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433688300] [2024-06-14 13:33:58,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433688300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:33:58,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:33:58,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 13:33:58,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617128697] [2024-06-14 13:33:58,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:33:58,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 13:33:58,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:33:58,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 13:33:58,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 13:33:58,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:33:58,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 13:33:58,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:33:58,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:33:58,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:33:58,925 INFO L124 PetriNetUnfolderBase]: 162/297 cut-off events. [2024-06-14 13:33:58,926 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-14 13:33:58,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 297 events. 162/297 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1013 event pairs, 97 based on Foata normal form. 1/291 useless extension candidates. Maximal degree in co-relation 596. Up to 288 conditions per place. [2024-06-14 13:33:58,931 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 23 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-14 13:33:58,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 117 flow [2024-06-14 13:33:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 13:33:58,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 13:33:58,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-06-14 13:33:58,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-14 13:33:58,943 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 46 transitions. [2024-06-14 13:33:58,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 117 flow [2024-06-14 13:33:58,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 13:33:58,948 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-14 13:33:58,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-14 13:33:58,952 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-14 13:33:58,953 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-14 13:33:58,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 13:33:58,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:33:58,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:33:58,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 13:33:58,954 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 13:33:58,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:33:58,954 INFO L85 PathProgramCache]: Analyzing trace with hash -551185454, now seen corresponding path program 1 times [2024-06-14 13:33:58,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:33:58,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598367402] [2024-06-14 13:33:58,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:33:58,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:33:58,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:33:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:33:59,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:33:59,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598367402] [2024-06-14 13:33:59,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598367402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:33:59,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:33:59,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 13:33:59,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812706308] [2024-06-14 13:33:59,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:33:59,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 13:33:59,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:33:59,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 13:33:59,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 13:33:59,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:33:59,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 13:33:59,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:33:59,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:33:59,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:33:59,536 INFO L124 PetriNetUnfolderBase]: 159/292 cut-off events. [2024-06-14 13:33:59,536 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-14 13:33:59,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682 conditions, 292 events. 159/292 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 991 event pairs, 79 based on Foata normal form. 2/292 useless extension candidates. Maximal degree in co-relation 667. Up to 274 conditions per place. [2024-06-14 13:33:59,541 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 27 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-14 13:33:59,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 159 flow [2024-06-14 13:33:59,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 13:33:59,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 13:33:59,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-06-14 13:33:59,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-14 13:33:59,544 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 58 transitions. [2024-06-14 13:33:59,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 159 flow [2024-06-14 13:33:59,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 13:33:59,548 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-14 13:33:59,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-14 13:33:59,549 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-14 13:33:59,549 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-14 13:33:59,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states 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 13:33:59,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:33:59,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:33:59,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 13:33:59,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 13:33:59,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:33:59,552 INFO L85 PathProgramCache]: Analyzing trace with hash 79715222, now seen corresponding path program 1 times [2024-06-14 13:33:59,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:33:59,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448866813] [2024-06-14 13:33:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:33:59,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:33:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:00,081 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 13:34:00,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:00,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448866813] [2024-06-14 13:34:00,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448866813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:00,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:00,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 13:34:00,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104393794] [2024-06-14 13:34:00,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:00,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 13:34:00,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:00,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 13:34:00,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 13:34:00,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:34:00,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 13:34:00,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:00,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:34:00,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:00,239 INFO L124 PetriNetUnfolderBase]: 153/282 cut-off events. [2024-06-14 13:34:00,240 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2024-06-14 13:34:00,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 731 conditions, 282 events. 153/282 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 940 event pairs, 43 based on Foata normal form. 4/284 useless extension candidates. Maximal degree in co-relation 714. Up to 246 conditions per place. [2024-06-14 13:34:00,242 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 32 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2024-06-14 13:34:00,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 211 flow [2024-06-14 13:34:00,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:34:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:34:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-06-14 13:34:00,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47333333333333333 [2024-06-14 13:34:00,245 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 5 states and 71 transitions. [2024-06-14 13:34:00,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 211 flow [2024-06-14 13:34:00,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 13:34:00,250 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 117 flow [2024-06-14 13:34:00,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-06-14 13:34:00,251 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-06-14 13:34:00,251 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 117 flow [2024-06-14 13:34:00,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states 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 13:34:00,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:00,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:00,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 13:34:00,252 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 13:34:00,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:00,252 INFO L85 PathProgramCache]: Analyzing trace with hash -703047979, now seen corresponding path program 1 times [2024-06-14 13:34:00,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:00,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198753880] [2024-06-14 13:34:00,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:00,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:00,995 INFO 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 13:34:00,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:00,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198753880] [2024-06-14 13:34:00,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198753880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:00,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:00,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:34:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269303676] [2024-06-14 13:34:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:00,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:34:00,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:00,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:34:00,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:34:01,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:34:01,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:01,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:01,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:34:01,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:01,148 INFO L124 PetriNetUnfolderBase]: 149/274 cut-off events. [2024-06-14 13:34:01,148 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2024-06-14 13:34:01,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 274 events. 149/274 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 907 event pairs, 24 based on Foata normal form. 4/276 useless extension candidates. Maximal degree in co-relation 756. Up to 220 conditions per place. [2024-06-14 13:34:01,150 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 32 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-14 13:34:01,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 42 transitions, 225 flow [2024-06-14 13:34:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:34:01,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:34:01,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-14 13:34:01,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-14 13:34:01,151 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 117 flow. Second operand 6 states and 78 transitions. [2024-06-14 13:34:01,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 42 transitions, 225 flow [2024-06-14 13:34:01,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 42 transitions, 210 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 13:34:01,153 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 114 flow [2024-06-14 13:34:01,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=114, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-06-14 13:34:01,154 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-14 13:34:01,154 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 114 flow [2024-06-14 13:34:01,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:01,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:01,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:01,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 13:34:01,155 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 13:34:01,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:01,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1322578618, now seen corresponding path program 1 times [2024-06-14 13:34:01,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:01,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909456251] [2024-06-14 13:34:01,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:01,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:01,566 INFO 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 13:34:01,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:01,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909456251] [2024-06-14 13:34:01,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909456251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:01,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:01,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 13:34:01,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71590199] [2024-06-14 13:34:01,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:01,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 13:34:01,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:01,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 13:34:01,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 13:34:01,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:01,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 114 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 13:34:01,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:01,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:01,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:01,692 INFO L124 PetriNetUnfolderBase]: 147/271 cut-off events. [2024-06-14 13:34:01,692 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-14 13:34:01,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 799 conditions, 271 events. 147/271 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 886 event pairs, 53 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 780. Up to 259 conditions per place. [2024-06-14 13:34:01,694 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 26 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2024-06-14 13:34:01,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 34 transitions, 196 flow [2024-06-14 13:34:01,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 13:34:01,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 13:34:01,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 54 transitions. [2024-06-14 13:34:01,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36 [2024-06-14 13:34:01,695 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 114 flow. Second operand 5 states and 54 transitions. [2024-06-14 13:34:01,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 34 transitions, 196 flow [2024-06-14 13:34:01,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 176 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 13:34:01,697 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 121 flow [2024-06-14 13:34:01,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2024-06-14 13:34:01,698 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-06-14 13:34:01,698 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 121 flow [2024-06-14 13:34:01,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 13:34:01,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:01,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:01,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 13:34:01,699 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 13:34:01,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:01,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1949736420, now seen corresponding path program 1 times [2024-06-14 13:34:01,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:01,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251053188] [2024-06-14 13:34:01,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:01,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:02,147 INFO 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 13:34:02,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:02,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251053188] [2024-06-14 13:34:02,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251053188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:02,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:02,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:34:02,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817120481] [2024-06-14 13:34:02,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:02,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:34:02,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:02,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:34:02,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:34:02,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:02,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 121 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:02,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:02,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:02,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:02,274 INFO L124 PetriNetUnfolderBase]: 149/276 cut-off events. [2024-06-14 13:34:02,275 INFO L125 PetriNetUnfolderBase]: For 498/501 co-relation queries the response was YES. [2024-06-14 13:34:02,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 276 events. 149/276 cut-off events. For 498/501 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 922 event pairs, 52 based on Foata normal form. 4/277 useless extension candidates. Maximal degree in co-relation 822. Up to 237 conditions per place. [2024-06-14 13:34:02,276 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 28 selfloop transitions, 12 changer transitions 0/42 dead transitions. [2024-06-14 13:34:02,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 42 transitions, 249 flow [2024-06-14 13:34:02,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:34:02,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:34:02,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 67 transitions. [2024-06-14 13:34:02,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-14 13:34:02,278 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 121 flow. Second operand 6 states and 67 transitions. [2024-06-14 13:34:02,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 42 transitions, 249 flow [2024-06-14 13:34:02,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 42 transitions, 238 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 13:34:02,280 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 178 flow [2024-06-14 13:34:02,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=178, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-14 13:34:02,281 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-06-14 13:34:02,281 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 178 flow [2024-06-14 13:34:02,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:02,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:02,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:02,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 13:34:02,282 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 13:34:02,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1382704549, now seen corresponding path program 1 times [2024-06-14 13:34:02,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:02,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386226707] [2024-06-14 13:34:02,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:02,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:02,703 INFO 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 13:34:02,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:02,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386226707] [2024-06-14 13:34:02,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386226707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:02,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:02,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:34:02,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486961047] [2024-06-14 13:34:02,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:02,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:34:02,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:02,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:34:02,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:34:02,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:02,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:02,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:02,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:02,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:02,903 INFO L124 PetriNetUnfolderBase]: 156/288 cut-off events. [2024-06-14 13:34:02,903 INFO L125 PetriNetUnfolderBase]: For 702/702 co-relation queries the response was YES. [2024-06-14 13:34:02,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 288 events. 156/288 cut-off events. For 702/702 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 959 event pairs, 51 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 989. Up to 264 conditions per place. [2024-06-14 13:34:02,906 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 37 selfloop transitions, 11 changer transitions 0/50 dead transitions. [2024-06-14 13:34:02,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 50 transitions, 332 flow [2024-06-14 13:34:02,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:34:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:34:02,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-14 13:34:02,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2024-06-14 13:34:02,908 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 178 flow. Second operand 7 states and 74 transitions. [2024-06-14 13:34:02,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 50 transitions, 332 flow [2024-06-14 13:34:02,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 50 transitions, 318 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 13:34:02,911 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 233 flow [2024-06-14 13:34:02,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=233, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-06-14 13:34:02,912 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2024-06-14 13:34:02,913 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 233 flow [2024-06-14 13:34:02,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:02,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:02,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:02,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 13:34:02,913 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 13:34:02,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1164690619, now seen corresponding path program 2 times [2024-06-14 13:34:02,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:02,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742597256] [2024-06-14 13:34:02,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:02,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:03,383 INFO 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 13:34:03,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:03,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742597256] [2024-06-14 13:34:03,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742597256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:03,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:03,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:34:03,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905904220] [2024-06-14 13:34:03,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:03,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:34:03,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:03,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:34:03,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:34:03,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:03,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 233 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:03,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:03,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:03,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:03,590 INFO L124 PetriNetUnfolderBase]: 159/293 cut-off events. [2024-06-14 13:34:03,590 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2024-06-14 13:34:03,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1112 conditions, 293 events. 159/293 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 982 event pairs, 50 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 1086. Up to 266 conditions per place. [2024-06-14 13:34:03,592 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 36 selfloop transitions, 12 changer transitions 0/50 dead transitions. [2024-06-14 13:34:03,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 50 transitions, 370 flow [2024-06-14 13:34:03,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:34:03,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:34:03,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 65 transitions. [2024-06-14 13:34:03,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 13:34:03,593 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 233 flow. Second operand 6 states and 65 transitions. [2024-06-14 13:34:03,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 50 transitions, 370 flow [2024-06-14 13:34:03,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 349 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 13:34:03,595 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 267 flow [2024-06-14 13:34:03,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2024-06-14 13:34:03,596 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-06-14 13:34:03,596 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 267 flow [2024-06-14 13:34:03,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:03,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:03,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:03,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 13:34:03,597 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 13:34:03,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:03,597 INFO L85 PathProgramCache]: Analyzing trace with hash 312279589, now seen corresponding path program 3 times [2024-06-14 13:34:03,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:03,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144184465] [2024-06-14 13:34:03,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:03,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:04,013 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 13:34:04,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:04,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144184465] [2024-06-14 13:34:04,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144184465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:04,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:04,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 13:34:04,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114009212] [2024-06-14 13:34:04,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:04,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 13:34:04,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:04,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 13:34:04,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 13:34:04,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:04,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:04,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:04,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:04,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:04,140 INFO L124 PetriNetUnfolderBase]: 154/286 cut-off events. [2024-06-14 13:34:04,140 INFO L125 PetriNetUnfolderBase]: For 1202/1205 co-relation queries the response was YES. [2024-06-14 13:34:04,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1108 conditions, 286 events. 154/286 cut-off events. For 1202/1205 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 960 event pairs, 53 based on Foata normal form. 4/286 useless extension candidates. Maximal degree in co-relation 1081. Up to 239 conditions per place. [2024-06-14 13:34:04,142 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 30 selfloop transitions, 16 changer transitions 0/48 dead transitions. [2024-06-14 13:34:04,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 48 transitions, 375 flow [2024-06-14 13:34:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 13:34:04,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 13:34:04,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-06-14 13:34:04,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-14 13:34:04,143 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 267 flow. Second operand 6 states and 66 transitions. [2024-06-14 13:34:04,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 48 transitions, 375 flow [2024-06-14 13:34:04,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 345 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-14 13:34:04,145 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 276 flow [2024-06-14 13:34:04,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=276, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2024-06-14 13:34:04,146 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-14 13:34:04,146 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 276 flow [2024-06-14 13:34:04,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:04,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:04,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:04,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 13:34:04,147 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 13:34:04,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:04,147 INFO L85 PathProgramCache]: Analyzing trace with hash 312287525, now seen corresponding path program 1 times [2024-06-14 13:34:04,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:04,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996004264] [2024-06-14 13:34:04,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:04,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:04,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:04,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996004264] [2024-06-14 13:34:04,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996004264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:04,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:04,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:34:04,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883835671] [2024-06-14 13:34:04,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:04,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:34:04,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:04,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:34:04,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:34:04,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:04,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 276 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:04,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:04,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:04,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:04,860 INFO L124 PetriNetUnfolderBase]: 173/319 cut-off events. [2024-06-14 13:34:04,860 INFO L125 PetriNetUnfolderBase]: For 1243/1243 co-relation queries the response was YES. [2024-06-14 13:34:04,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 319 events. 173/319 cut-off events. For 1243/1243 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1115 event pairs, 38 based on Foata normal form. 4/318 useless extension candidates. Maximal degree in co-relation 1174. Up to 192 conditions per place. [2024-06-14 13:34:04,862 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 39 selfloop transitions, 23 changer transitions 0/64 dead transitions. [2024-06-14 13:34:04,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 504 flow [2024-06-14 13:34:04,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:34:04,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:34:04,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-14 13:34:04,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-14 13:34:04,863 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 276 flow. Second operand 7 states and 85 transitions. [2024-06-14 13:34:04,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 504 flow [2024-06-14 13:34:04,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 64 transitions, 459 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 13:34:04,865 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 352 flow [2024-06-14 13:34:04,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=352, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-14 13:34:04,866 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-14 13:34:04,866 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 352 flow [2024-06-14 13:34:04,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:04,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:04,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:04,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 13:34:04,867 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 13:34:04,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:04,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1229324189, now seen corresponding path program 1 times [2024-06-14 13:34:04,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:04,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053362597] [2024-06-14 13:34:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:04,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:05,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:05,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:05,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053362597] [2024-06-14 13:34:05,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053362597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:05,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:05,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:34:05,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105869534] [2024-06-14 13:34:05,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:05,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:34:05,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:05,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:34:05,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:34:05,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:05,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 352 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:05,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:05,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:05,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:05,449 INFO L124 PetriNetUnfolderBase]: 183/335 cut-off events. [2024-06-14 13:34:05,449 INFO L125 PetriNetUnfolderBase]: For 1468/1468 co-relation queries the response was YES. [2024-06-14 13:34:05,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1415 conditions, 335 events. 183/335 cut-off events. For 1468/1468 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1178 event pairs, 33 based on Foata normal form. 2/335 useless extension candidates. Maximal degree in co-relation 1385. Up to 281 conditions per place. [2024-06-14 13:34:05,451 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 54 selfloop transitions, 17 changer transitions 0/73 dead transitions. [2024-06-14 13:34:05,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 574 flow [2024-06-14 13:34:05,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:05,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 13:34:05,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 13:34:05,453 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 352 flow. Second operand 8 states and 87 transitions. [2024-06-14 13:34:05,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 574 flow [2024-06-14 13:34:05,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 550 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-14 13:34:05,456 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 423 flow [2024-06-14 13:34:05,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=423, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-06-14 13:34:05,457 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-14 13:34:05,457 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 423 flow [2024-06-14 13:34:05,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:05,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:05,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:05,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 13:34:05,457 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 13:34:05,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:05,458 INFO L85 PathProgramCache]: Analyzing trace with hash -584554399, now seen corresponding path program 2 times [2024-06-14 13:34:05,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:05,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263918518] [2024-06-14 13:34:05,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:05,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:05,883 INFO 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 13:34:05,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:05,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263918518] [2024-06-14 13:34:05,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263918518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:05,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:05,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:34:05,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838139985] [2024-06-14 13:34:05,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:05,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:34:05,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:05,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:34:05,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:34:05,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:05,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 423 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:05,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:05,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:05,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:06,084 INFO L124 PetriNetUnfolderBase]: 189/345 cut-off events. [2024-06-14 13:34:06,085 INFO L125 PetriNetUnfolderBase]: For 1876/1876 co-relation queries the response was YES. [2024-06-14 13:34:06,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 345 events. 189/345 cut-off events. For 1876/1876 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1212 event pairs, 32 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1571. Up to 285 conditions per place. [2024-06-14 13:34:06,087 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 53 selfloop transitions, 18 changer transitions 0/73 dead transitions. [2024-06-14 13:34:06,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 73 transitions, 629 flow [2024-06-14 13:34:06,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:34:06,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:34:06,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-14 13:34:06,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-14 13:34:06,088 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 423 flow. Second operand 7 states and 78 transitions. [2024-06-14 13:34:06,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 73 transitions, 629 flow [2024-06-14 13:34:06,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 73 transitions, 607 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 13:34:06,092 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 469 flow [2024-06-14 13:34:06,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=469, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-06-14 13:34:06,092 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-14 13:34:06,092 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 469 flow [2024-06-14 13:34:06,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:06,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:06,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:06,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 13:34:06,093 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 13:34:06,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:06,093 INFO L85 PathProgramCache]: Analyzing trace with hash 913601579, now seen corresponding path program 3 times [2024-06-14 13:34:06,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:06,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690067750] [2024-06-14 13:34:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:06,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:06,567 INFO 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 13:34:06,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:06,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690067750] [2024-06-14 13:34:06,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690067750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:06,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:06,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:34:06,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990517193] [2024-06-14 13:34:06,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:06,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:34:06,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:06,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:34:06,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:34:06,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:06,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 469 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:06,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:06,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:06,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:06,775 INFO L124 PetriNetUnfolderBase]: 200/363 cut-off events. [2024-06-14 13:34:06,776 INFO L125 PetriNetUnfolderBase]: For 2422/2422 co-relation queries the response was YES. [2024-06-14 13:34:06,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1793 conditions, 363 events. 200/363 cut-off events. For 2422/2422 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1299 event pairs, 32 based on Foata normal form. 2/363 useless extension candidates. Maximal degree in co-relation 1758. Up to 285 conditions per place. [2024-06-14 13:34:06,778 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 53 selfloop transitions, 22 changer transitions 0/77 dead transitions. [2024-06-14 13:34:06,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 735 flow [2024-06-14 13:34:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:34:06,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:34:06,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 79 transitions. [2024-06-14 13:34:06,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-14 13:34:06,779 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 469 flow. Second operand 7 states and 79 transitions. [2024-06-14 13:34:06,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 735 flow [2024-06-14 13:34:06,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 77 transitions, 683 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-14 13:34:06,784 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 521 flow [2024-06-14 13:34:06,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=521, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-06-14 13:34:06,785 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-14 13:34:06,785 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 521 flow [2024-06-14 13:34:06,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:06,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:06,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:06,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 13:34:06,786 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 13:34:06,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:06,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1090733099, now seen corresponding path program 4 times [2024-06-14 13:34:06,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:06,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626961204] [2024-06-14 13:34:06,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:06,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:07,263 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 13:34:07,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:07,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626961204] [2024-06-14 13:34:07,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626961204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:07,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:07,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:34:07,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300812554] [2024-06-14 13:34:07,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:07,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:34:07,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:07,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:34:07,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:34:07,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:07,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 521 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:07,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:07,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:07,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:07,444 INFO L124 PetriNetUnfolderBase]: 210/383 cut-off events. [2024-06-14 13:34:07,444 INFO L125 PetriNetUnfolderBase]: For 2702/2708 co-relation queries the response was YES. [2024-06-14 13:34:07,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1806 conditions, 383 events. 210/383 cut-off events. For 2702/2708 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1420 event pairs, 39 based on Foata normal form. 7/384 useless extension candidates. Maximal degree in co-relation 1770. Up to 193 conditions per place. [2024-06-14 13:34:07,447 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 50 selfloop transitions, 31 changer transitions 0/83 dead transitions. [2024-06-14 13:34:07,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 807 flow [2024-06-14 13:34:07,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:34:07,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:34:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-14 13:34:07,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-14 13:34:07,448 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 521 flow. Second operand 7 states and 87 transitions. [2024-06-14 13:34:07,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 807 flow [2024-06-14 13:34:07,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 785 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-14 13:34:07,453 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 623 flow [2024-06-14 13:34:07,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=623, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-06-14 13:34:07,453 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-14 13:34:07,453 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 623 flow [2024-06-14 13:34:07,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:07,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:07,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:07,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 13:34:07,454 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 13:34:07,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:07,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1090979363, now seen corresponding path program 1 times [2024-06-14 13:34:07,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:07,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183982702] [2024-06-14 13:34:07,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:07,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:08,224 INFO 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 13:34:08,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:08,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183982702] [2024-06-14 13:34:08,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183982702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:08,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:08,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:08,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374647462] [2024-06-14 13:34:08,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:08,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:08,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:08,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:08,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:08,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:08,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 623 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:08,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:08,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:08,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:08,412 INFO L124 PetriNetUnfolderBase]: 211/385 cut-off events. [2024-06-14 13:34:08,413 INFO L125 PetriNetUnfolderBase]: For 2783/2789 co-relation queries the response was YES. [2024-06-14 13:34:08,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1962 conditions, 385 events. 211/385 cut-off events. For 2783/2789 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1416 event pairs, 37 based on Foata normal form. 8/389 useless extension candidates. Maximal degree in co-relation 1923. Up to 319 conditions per place. [2024-06-14 13:34:08,415 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 57 selfloop transitions, 23 changer transitions 0/82 dead transitions. [2024-06-14 13:34:08,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 82 transitions, 824 flow [2024-06-14 13:34:08,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:08,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:08,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-14 13:34:08,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3458333333333333 [2024-06-14 13:34:08,416 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 623 flow. Second operand 8 states and 83 transitions. [2024-06-14 13:34:08,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 82 transitions, 824 flow [2024-06-14 13:34:08,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 781 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-14 13:34:08,422 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 656 flow [2024-06-14 13:34:08,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=656, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2024-06-14 13:34:08,422 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-14 13:34:08,422 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 656 flow [2024-06-14 13:34:08,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:08,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:08,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:08,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 13:34:08,423 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 13:34:08,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:08,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1167356796, now seen corresponding path program 1 times [2024-06-14 13:34:08,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:08,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025521931] [2024-06-14 13:34:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:08,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:08,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:09,054 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 13:34:09,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:09,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025521931] [2024-06-14 13:34:09,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025521931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:09,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:09,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:09,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400086209] [2024-06-14 13:34:09,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:09,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:09,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:09,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:09,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:09,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:09,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 656 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:09,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:09,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:09,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:09,342 INFO L124 PetriNetUnfolderBase]: 209/381 cut-off events. [2024-06-14 13:34:09,343 INFO L125 PetriNetUnfolderBase]: For 2572/2572 co-relation queries the response was YES. [2024-06-14 13:34:09,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1966 conditions, 381 events. 209/381 cut-off events. For 2572/2572 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1394 event pairs, 34 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1925. Up to 318 conditions per place. [2024-06-14 13:34:09,346 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 66 selfloop transitions, 18 changer transitions 0/86 dead transitions. [2024-06-14 13:34:09,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 86 transitions, 868 flow [2024-06-14 13:34:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:34:09,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:34:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-14 13:34:09,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-06-14 13:34:09,347 INFO L175 Difference]: Start difference. First operand has 81 places, 73 transitions, 656 flow. Second operand 7 states and 78 transitions. [2024-06-14 13:34:09,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 86 transitions, 868 flow [2024-06-14 13:34:09,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 809 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 13:34:09,354 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 644 flow [2024-06-14 13:34:09,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=644, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2024-06-14 13:34:09,354 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-06-14 13:34:09,354 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 644 flow [2024-06-14 13:34:09,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:09,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:09,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:09,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 13:34:09,355 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 13:34:09,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:09,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1746840575, now seen corresponding path program 1 times [2024-06-14 13:34:09,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:09,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585583122] [2024-06-14 13:34:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:09,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:09,817 INFO 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 13:34:09,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:09,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585583122] [2024-06-14 13:34:09,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585583122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:09,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:09,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:34:09,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344980323] [2024-06-14 13:34:09,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:09,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:34:09,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:09,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:34:09,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:34:09,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:09,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 644 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 13:34:09,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:09,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:09,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:10,007 INFO L124 PetriNetUnfolderBase]: 215/393 cut-off events. [2024-06-14 13:34:10,007 INFO L125 PetriNetUnfolderBase]: For 3208/3214 co-relation queries the response was YES. [2024-06-14 13:34:10,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 393 events. 215/393 cut-off events. For 3208/3214 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1474 event pairs, 40 based on Foata normal form. 6/394 useless extension candidates. Maximal degree in co-relation 1966. Up to 319 conditions per place. [2024-06-14 13:34:10,009 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 65 selfloop transitions, 19 changer transitions 0/86 dead transitions. [2024-06-14 13:34:10,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 865 flow [2024-06-14 13:34:10,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:34:10,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:34:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-14 13:34:10,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-14 13:34:10,011 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 644 flow. Second operand 7 states and 77 transitions. [2024-06-14 13:34:10,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 865 flow [2024-06-14 13:34:10,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 807 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 13:34:10,016 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 649 flow [2024-06-14 13:34:10,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=649, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2024-06-14 13:34:10,017 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2024-06-14 13:34:10,017 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 649 flow [2024-06-14 13:34:10,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 13:34:10,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:10,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:10,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 13:34:10,018 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 13:34:10,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:10,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1163541781, now seen corresponding path program 2 times [2024-06-14 13:34:10,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:10,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216500010] [2024-06-14 13:34:10,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:10,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:10,466 INFO 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 13:34:10,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:10,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216500010] [2024-06-14 13:34:10,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216500010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:10,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:10,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:34:10,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568846055] [2024-06-14 13:34:10,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:10,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:34:10,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:10,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:34:10,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:34:10,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:10,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 649 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 13:34:10,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:10,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:10,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:10,663 INFO L124 PetriNetUnfolderBase]: 217/397 cut-off events. [2024-06-14 13:34:10,664 INFO L125 PetriNetUnfolderBase]: For 3312/3318 co-relation queries the response was YES. [2024-06-14 13:34:10,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1999 conditions, 397 events. 217/397 cut-off events. For 3312/3318 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1496 event pairs, 40 based on Foata normal form. 5/396 useless extension candidates. Maximal degree in co-relation 1957. Up to 196 conditions per place. [2024-06-14 13:34:10,666 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 47 selfloop transitions, 40 changer transitions 0/89 dead transitions. [2024-06-14 13:34:10,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 89 transitions, 940 flow [2024-06-14 13:34:10,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:34:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:34:10,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-14 13:34:10,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-14 13:34:10,668 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 649 flow. Second operand 7 states and 86 transitions. [2024-06-14 13:34:10,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 89 transitions, 940 flow [2024-06-14 13:34:10,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 89 transitions, 902 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 13:34:10,679 INFO L231 Difference]: Finished difference. Result has 85 places, 77 transitions, 720 flow [2024-06-14 13:34:10,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=720, PETRI_PLACES=85, PETRI_TRANSITIONS=77} [2024-06-14 13:34:10,680 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-14 13:34:10,680 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 720 flow [2024-06-14 13:34:10,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 13:34:10,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:10,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:10,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 13:34:10,680 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 13:34:10,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1163547361, now seen corresponding path program 3 times [2024-06-14 13:34:10,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:10,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992122780] [2024-06-14 13:34:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:10,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:11,163 INFO 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 13:34:11,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:11,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992122780] [2024-06-14 13:34:11,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992122780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:11,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:11,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:34:11,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546225769] [2024-06-14 13:34:11,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:11,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:34:11,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:34:11,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:34:11,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:11,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 77 transitions, 720 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 13:34:11,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:11,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:11,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:11,357 INFO L124 PetriNetUnfolderBase]: 217/397 cut-off events. [2024-06-14 13:34:11,358 INFO L125 PetriNetUnfolderBase]: For 3561/3567 co-relation queries the response was YES. [2024-06-14 13:34:11,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 397 events. 217/397 cut-off events. For 3561/3567 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1507 event pairs, 37 based on Foata normal form. 3/394 useless extension candidates. Maximal degree in co-relation 2051. Up to 197 conditions per place. [2024-06-14 13:34:11,360 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 50 selfloop transitions, 38 changer transitions 0/90 dead transitions. [2024-06-14 13:34:11,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 90 transitions, 989 flow [2024-06-14 13:34:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:34:11,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:34:11,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-14 13:34:11,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3952380952380952 [2024-06-14 13:34:11,362 INFO L175 Difference]: Start difference. First operand has 85 places, 77 transitions, 720 flow. Second operand 7 states and 83 transitions. [2024-06-14 13:34:11,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 90 transitions, 989 flow [2024-06-14 13:34:11,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 90 transitions, 897 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 13:34:11,370 INFO L231 Difference]: Finished difference. Result has 87 places, 79 transitions, 735 flow [2024-06-14 13:34:11,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=735, PETRI_PLACES=87, PETRI_TRANSITIONS=79} [2024-06-14 13:34:11,370 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 58 predicate places. [2024-06-14 13:34:11,370 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 79 transitions, 735 flow [2024-06-14 13:34:11,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 13:34:11,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:11,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:11,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 13:34:11,371 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 13:34:11,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:11,371 INFO L85 PathProgramCache]: Analyzing trace with hash -539387324, now seen corresponding path program 1 times [2024-06-14 13:34:11,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:11,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427429283] [2024-06-14 13:34:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:11,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:11,927 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 13:34:11,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:11,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427429283] [2024-06-14 13:34:11,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427429283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:11,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:11,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 13:34:11,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648691245] [2024-06-14 13:34:11,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:11,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 13:34:11,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:11,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 13:34:11,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 13:34:11,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:11,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 79 transitions, 735 flow. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 13:34:11,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:11,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:11,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:12,113 INFO L124 PetriNetUnfolderBase]: 213/389 cut-off events. [2024-06-14 13:34:12,114 INFO L125 PetriNetUnfolderBase]: For 3481/3487 co-relation queries the response was YES. [2024-06-14 13:34:12,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2066 conditions, 389 events. 213/389 cut-off events. For 3481/3487 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1448 event pairs, 39 based on Foata normal form. 5/390 useless extension candidates. Maximal degree in co-relation 2022. Up to 330 conditions per place. [2024-06-14 13:34:12,116 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 65 selfloop transitions, 21 changer transitions 0/88 dead transitions. [2024-06-14 13:34:12,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 88 transitions, 938 flow [2024-06-14 13:34:12,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:12,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:12,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-14 13:34:12,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3458333333333333 [2024-06-14 13:34:12,118 INFO L175 Difference]: Start difference. First operand has 87 places, 79 transitions, 735 flow. Second operand 8 states and 83 transitions. [2024-06-14 13:34:12,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 88 transitions, 938 flow [2024-06-14 13:34:12,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 880 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-14 13:34:12,126 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 736 flow [2024-06-14 13:34:12,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=736, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2024-06-14 13:34:12,126 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-06-14 13:34:12,126 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 736 flow [2024-06-14 13:34:12,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 13:34:12,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:12,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:12,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 13:34:12,127 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 13:34:12,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:12,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1828382264, now seen corresponding path program 1 times [2024-06-14 13:34:12,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:12,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792833553] [2024-06-14 13:34:12,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:12,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:12,733 INFO 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 13:34:12,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:12,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792833553] [2024-06-14 13:34:12,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792833553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:12,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:12,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:12,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175782119] [2024-06-14 13:34:12,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:12,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:12,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:12,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:12,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:12,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:12,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 736 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:12,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:12,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:12,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:13,069 INFO L124 PetriNetUnfolderBase]: 217/396 cut-off events. [2024-06-14 13:34:13,069 INFO L125 PetriNetUnfolderBase]: For 3827/3827 co-relation queries the response was YES. [2024-06-14 13:34:13,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2076 conditions, 396 events. 217/396 cut-off events. For 3827/3827 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1493 event pairs, 19 based on Foata normal form. 2/396 useless extension candidates. Maximal degree in co-relation 2031. Up to 322 conditions per place. [2024-06-14 13:34:13,072 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 80 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2024-06-14 13:34:13,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 974 flow [2024-06-14 13:34:13,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:13,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-14 13:34:13,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-14 13:34:13,076 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 736 flow. Second operand 8 states and 84 transitions. [2024-06-14 13:34:13,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 974 flow [2024-06-14 13:34:13,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 96 transitions, 928 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 13:34:13,099 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 730 flow [2024-06-14 13:34:13,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=730, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-06-14 13:34:13,099 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 64 predicate places. [2024-06-14 13:34:13,100 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 730 flow [2024-06-14 13:34:13,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:13,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:13,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:13,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 13:34:13,100 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 13:34:13,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:13,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1679716326, now seen corresponding path program 1 times [2024-06-14 13:34:13,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:13,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237681969] [2024-06-14 13:34:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:13,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:13,688 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 13:34:13,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:13,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237681969] [2024-06-14 13:34:13,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237681969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:13,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:13,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:13,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878222272] [2024-06-14 13:34:13,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:13,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:13,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:13,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:13,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:13,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:13,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 730 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:13,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:13,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:13,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:13,928 INFO L124 PetriNetUnfolderBase]: 214/392 cut-off events. [2024-06-14 13:34:13,929 INFO L125 PetriNetUnfolderBase]: For 3934/3940 co-relation queries the response was YES. [2024-06-14 13:34:13,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 392 events. 214/392 cut-off events. For 3934/3940 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1469 event pairs, 32 based on Foata normal form. 5/393 useless extension candidates. Maximal degree in co-relation 2003. Up to 313 conditions per place. [2024-06-14 13:34:13,933 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 70 selfloop transitions, 21 changer transitions 0/93 dead transitions. [2024-06-14 13:34:13,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 93 transitions, 956 flow [2024-06-14 13:34:13,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 13:34:13,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 13:34:13,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-14 13:34:13,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-14 13:34:13,934 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 730 flow. Second operand 7 states and 77 transitions. [2024-06-14 13:34:13,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 93 transitions, 956 flow [2024-06-14 13:34:13,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 93 transitions, 924 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 13:34:13,943 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 749 flow [2024-06-14 13:34:13,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=749, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2024-06-14 13:34:13,944 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 65 predicate places. [2024-06-14 13:34:13,944 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 749 flow [2024-06-14 13:34:13,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:13,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:13,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:13,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 13:34:13,945 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 13:34:13,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:13,945 INFO L85 PathProgramCache]: Analyzing trace with hash 442491160, now seen corresponding path program 2 times [2024-06-14 13:34:13,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:13,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060461386] [2024-06-14 13:34:13,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:13,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:14,674 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 13:34:14,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:14,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060461386] [2024-06-14 13:34:14,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060461386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:14,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:14,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:14,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132157159] [2024-06-14 13:34:14,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:14,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:14,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:14,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:14,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:14,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:14,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 749 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:14,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:14,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:14,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:14,955 INFO L124 PetriNetUnfolderBase]: 218/399 cut-off events. [2024-06-14 13:34:14,955 INFO L125 PetriNetUnfolderBase]: For 4498/4498 co-relation queries the response was YES. [2024-06-14 13:34:14,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2112 conditions, 399 events. 218/399 cut-off events. For 4498/4498 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1517 event pairs, 29 based on Foata normal form. 2/399 useless extension candidates. Maximal degree in co-relation 2065. Up to 326 conditions per place. [2024-06-14 13:34:14,957 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 76 selfloop transitions, 19 changer transitions 0/97 dead transitions. [2024-06-14 13:34:14,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 97 transitions, 995 flow [2024-06-14 13:34:14,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:14,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-14 13:34:14,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-14 13:34:14,958 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 749 flow. Second operand 8 states and 86 transitions. [2024-06-14 13:34:14,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 97 transitions, 995 flow [2024-06-14 13:34:14,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 906 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 13:34:14,967 INFO L231 Difference]: Finished difference. Result has 95 places, 82 transitions, 714 flow [2024-06-14 13:34:14,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=714, PETRI_PLACES=95, PETRI_TRANSITIONS=82} [2024-06-14 13:34:14,968 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-14 13:34:14,968 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 82 transitions, 714 flow [2024-06-14 13:34:14,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:14,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:14,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:14,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 13:34:14,969 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 13:34:14,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:14,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1797803882, now seen corresponding path program 3 times [2024-06-14 13:34:14,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:14,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770985840] [2024-06-14 13:34:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:14,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:15,576 INFO 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 13:34:15,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:15,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770985840] [2024-06-14 13:34:15,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770985840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:15,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:15,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:15,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781209180] [2024-06-14 13:34:15,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:15,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:15,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:15,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:15,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:15,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:15,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 82 transitions, 714 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:15,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:15,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:15,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:15,780 INFO L124 PetriNetUnfolderBase]: 222/407 cut-off events. [2024-06-14 13:34:15,780 INFO L125 PetriNetUnfolderBase]: For 4407/4407 co-relation queries the response was YES. [2024-06-14 13:34:15,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 407 events. 222/407 cut-off events. For 4407/4407 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1555 event pairs, 29 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 2056. Up to 324 conditions per place. [2024-06-14 13:34:15,783 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 72 selfloop transitions, 23 changer transitions 0/97 dead transitions. [2024-06-14 13:34:15,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 97 transitions, 962 flow [2024-06-14 13:34:15,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:15,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-14 13:34:15,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-14 13:34:15,784 INFO L175 Difference]: Start difference. First operand has 95 places, 82 transitions, 714 flow. Second operand 8 states and 86 transitions. [2024-06-14 13:34:15,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 97 transitions, 962 flow [2024-06-14 13:34:15,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 97 transitions, 922 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 13:34:15,794 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 736 flow [2024-06-14 13:34:15,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=736, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-06-14 13:34:15,795 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-06-14 13:34:15,795 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 736 flow [2024-06-14 13:34:15,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:15,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:15,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:15,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 13:34:15,795 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 13:34:15,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:15,796 INFO L85 PathProgramCache]: Analyzing trace with hash 459159490, now seen corresponding path program 1 times [2024-06-14 13:34:15,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:15,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215544475] [2024-06-14 13:34:15,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:15,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:16,543 INFO 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 13:34:16,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:16,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215544475] [2024-06-14 13:34:16,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215544475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:16,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:16,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:16,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056488539] [2024-06-14 13:34:16,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:16,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:16,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:16,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:16,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:16,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:16,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 736 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:16,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:16,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:16,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:16,750 INFO L124 PetriNetUnfolderBase]: 226/416 cut-off events. [2024-06-14 13:34:16,751 INFO L125 PetriNetUnfolderBase]: For 4986/4992 co-relation queries the response was YES. [2024-06-14 13:34:16,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2170 conditions, 416 events. 226/416 cut-off events. For 4986/4992 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1600 event pairs, 36 based on Foata normal form. 6/418 useless extension candidates. Maximal degree in co-relation 2121. Up to 328 conditions per place. [2024-06-14 13:34:16,753 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 72 selfloop transitions, 21 changer transitions 0/95 dead transitions. [2024-06-14 13:34:16,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 95 transitions, 1002 flow [2024-06-14 13:34:16,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:16,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 13:34:16,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-14 13:34:16,756 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 736 flow. Second operand 8 states and 82 transitions. [2024-06-14 13:34:16,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 95 transitions, 1002 flow [2024-06-14 13:34:16,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 95 transitions, 950 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-14 13:34:16,767 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 742 flow [2024-06-14 13:34:16,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=742, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2024-06-14 13:34:16,768 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-06-14 13:34:16,768 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 742 flow [2024-06-14 13:34:16,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:16,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:16,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:16,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 13:34:16,768 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 13:34:16,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash 458862820, now seen corresponding path program 2 times [2024-06-14 13:34:16,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:16,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498905481] [2024-06-14 13:34:16,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:16,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:17,376 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 13:34:17,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:17,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498905481] [2024-06-14 13:34:17,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498905481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:17,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:17,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:17,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574544855] [2024-06-14 13:34:17,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:17,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:17,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:17,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:17,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:17,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:17,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 742 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:17,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:17,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:17,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:17,638 INFO L124 PetriNetUnfolderBase]: 223/411 cut-off events. [2024-06-14 13:34:17,638 INFO L125 PetriNetUnfolderBase]: For 4913/4919 co-relation queries the response was YES. [2024-06-14 13:34:17,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2117 conditions, 411 events. 223/411 cut-off events. For 4913/4919 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1583 event pairs, 37 based on Foata normal form. 6/413 useless extension candidates. Maximal degree in co-relation 2067. Up to 346 conditions per place. [2024-06-14 13:34:17,642 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 70 selfloop transitions, 22 changer transitions 0/94 dead transitions. [2024-06-14 13:34:17,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 94 transitions, 952 flow [2024-06-14 13:34:17,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:17,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-14 13:34:17,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.337037037037037 [2024-06-14 13:34:17,643 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 742 flow. Second operand 9 states and 91 transitions. [2024-06-14 13:34:17,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 94 transitions, 952 flow [2024-06-14 13:34:17,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 94 transitions, 889 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 13:34:17,656 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 727 flow [2024-06-14 13:34:17,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=727, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2024-06-14 13:34:17,657 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-06-14 13:34:17,657 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 727 flow [2024-06-14 13:34:17,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:17,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:17,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:17,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 13:34:17,658 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 13:34:17,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:17,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1171317538, now seen corresponding path program 1 times [2024-06-14 13:34:17,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:17,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427875483] [2024-06-14 13:34:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:17,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:18,443 INFO 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 13:34:18,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:18,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427875483] [2024-06-14 13:34:18,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427875483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:18,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:18,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:18,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951443104] [2024-06-14 13:34:18,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:18,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:18,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:18,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:18,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:18,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:18,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 727 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:18,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:18,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:18,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:18,736 INFO L124 PetriNetUnfolderBase]: 219/406 cut-off events. [2024-06-14 13:34:18,736 INFO L125 PetriNetUnfolderBase]: For 4700/4706 co-relation queries the response was YES. [2024-06-14 13:34:18,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 406 events. 219/406 cut-off events. For 4700/4706 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1578 event pairs, 39 based on Foata normal form. 3/403 useless extension candidates. Maximal degree in co-relation 1972. Up to 214 conditions per place. [2024-06-14 13:34:18,741 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 57 selfloop transitions, 36 changer transitions 0/95 dead transitions. [2024-06-14 13:34:18,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 95 transitions, 953 flow [2024-06-14 13:34:18,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:18,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-14 13:34:18,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-14 13:34:18,742 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 727 flow. Second operand 8 states and 92 transitions. [2024-06-14 13:34:18,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 95 transitions, 953 flow [2024-06-14 13:34:18,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 95 transitions, 889 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 13:34:18,752 INFO L231 Difference]: Finished difference. Result has 101 places, 84 transitions, 740 flow [2024-06-14 13:34:18,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=740, PETRI_PLACES=101, PETRI_TRANSITIONS=84} [2024-06-14 13:34:18,753 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-06-14 13:34:18,753 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 84 transitions, 740 flow [2024-06-14 13:34:18,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:18,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:18,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:18,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 13:34:18,753 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 13:34:18,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:18,754 INFO L85 PathProgramCache]: Analyzing trace with hash 222502762, now seen corresponding path program 4 times [2024-06-14 13:34:18,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:18,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088310749] [2024-06-14 13:34:18,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:18,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:19,469 INFO 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 13:34:19,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:19,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088310749] [2024-06-14 13:34:19,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088310749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:19,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:19,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:19,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130898318] [2024-06-14 13:34:19,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:19,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:19,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:19,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:19,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:19,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:19,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 84 transitions, 740 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:19,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:19,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:19,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:19,751 INFO L124 PetriNetUnfolderBase]: 236/445 cut-off events. [2024-06-14 13:34:19,752 INFO L125 PetriNetUnfolderBase]: For 7838/7844 co-relation queries the response was YES. [2024-06-14 13:34:19,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2089 conditions, 445 events. 236/445 cut-off events. For 7838/7844 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1792 event pairs, 42 based on Foata normal form. 15/454 useless extension candidates. Maximal degree in co-relation 2039. Up to 199 conditions per place. [2024-06-14 13:34:19,757 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 57 selfloop transitions, 35 changer transitions 7/101 dead transitions. [2024-06-14 13:34:19,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 101 transitions, 1006 flow [2024-06-14 13:34:19,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:19,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-14 13:34:19,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-14 13:34:19,759 INFO L175 Difference]: Start difference. First operand has 101 places, 84 transitions, 740 flow. Second operand 8 states and 98 transitions. [2024-06-14 13:34:19,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 101 transitions, 1006 flow [2024-06-14 13:34:19,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 101 transitions, 923 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 13:34:19,770 INFO L231 Difference]: Finished difference. Result has 102 places, 82 transitions, 720 flow [2024-06-14 13:34:19,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=720, PETRI_PLACES=102, PETRI_TRANSITIONS=82} [2024-06-14 13:34:19,770 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-06-14 13:34:19,770 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 82 transitions, 720 flow [2024-06-14 13:34:19,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:19,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:19,770 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 13:34:19,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 13:34:19,771 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 13:34:19,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:19,771 INFO L85 PathProgramCache]: Analyzing trace with hash -804516540, now seen corresponding path program 1 times [2024-06-14 13:34:19,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:19,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006472313] [2024-06-14 13:34:19,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:19,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:20,494 INFO 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 13:34:20,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:20,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006472313] [2024-06-14 13:34:20,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006472313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:20,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:20,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:20,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622972242] [2024-06-14 13:34:20,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:20,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:20,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:20,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:20,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:20,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:20,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 82 transitions, 720 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:20,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:20,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:20,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:20,737 INFO L124 PetriNetUnfolderBase]: 229/431 cut-off events. [2024-06-14 13:34:20,737 INFO L125 PetriNetUnfolderBase]: For 4952/4958 co-relation queries the response was YES. [2024-06-14 13:34:20,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 431 events. 229/431 cut-off events. For 4952/4958 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1750 event pairs, 34 based on Foata normal form. 6/433 useless extension candidates. Maximal degree in co-relation 2024. Up to 353 conditions per place. [2024-06-14 13:34:20,742 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 84 selfloop transitions, 18 changer transitions 0/104 dead transitions. [2024-06-14 13:34:20,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 104 transitions, 1012 flow [2024-06-14 13:34:20,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:20,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-14 13:34:20,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-14 13:34:20,744 INFO L175 Difference]: Start difference. First operand has 102 places, 82 transitions, 720 flow. Second operand 9 states and 94 transitions. [2024-06-14 13:34:20,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 104 transitions, 1012 flow [2024-06-14 13:34:20,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 104 transitions, 881 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 13:34:20,757 INFO L231 Difference]: Finished difference. Result has 106 places, 88 transitions, 692 flow [2024-06-14 13:34:20,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=692, PETRI_PLACES=106, PETRI_TRANSITIONS=88} [2024-06-14 13:34:20,759 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-06-14 13:34:20,759 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 88 transitions, 692 flow [2024-06-14 13:34:20,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:20,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:20,760 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 13:34:20,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 13:34:20,760 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 13:34:20,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:20,760 INFO L85 PathProgramCache]: Analyzing trace with hash 830450740, now seen corresponding path program 2 times [2024-06-14 13:34:20,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:20,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470846265] [2024-06-14 13:34:20,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:20,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:21,541 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 13:34:21,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:21,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470846265] [2024-06-14 13:34:21,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470846265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:21,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:21,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:21,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422602954] [2024-06-14 13:34:21,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:21,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:21,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:21,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:21,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:21,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:21,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 88 transitions, 692 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:21,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:21,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:21,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:21,780 INFO L124 PetriNetUnfolderBase]: 233/439 cut-off events. [2024-06-14 13:34:21,782 INFO L125 PetriNetUnfolderBase]: For 5047/5053 co-relation queries the response was YES. [2024-06-14 13:34:21,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2028 conditions, 439 events. 233/439 cut-off events. For 5047/5053 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1797 event pairs, 21 based on Foata normal form. 6/441 useless extension candidates. Maximal degree in co-relation 1974. Up to 327 conditions per place. [2024-06-14 13:34:21,792 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 81 selfloop transitions, 19 changer transitions 0/102 dead transitions. [2024-06-14 13:34:21,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 102 transitions, 936 flow [2024-06-14 13:34:21,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:21,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:21,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 13:34:21,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3416666666666667 [2024-06-14 13:34:21,794 INFO L175 Difference]: Start difference. First operand has 106 places, 88 transitions, 692 flow. Second operand 8 states and 82 transitions. [2024-06-14 13:34:21,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 102 transitions, 936 flow [2024-06-14 13:34:21,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 102 transitions, 904 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 13:34:21,808 INFO L231 Difference]: Finished difference. Result has 110 places, 89 transitions, 714 flow [2024-06-14 13:34:21,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=714, PETRI_PLACES=110, PETRI_TRANSITIONS=89} [2024-06-14 13:34:21,809 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-14 13:34:21,809 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 89 transitions, 714 flow [2024-06-14 13:34:21,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:21,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:21,810 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 13:34:21,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 13:34:21,810 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 13:34:21,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:21,810 INFO L85 PathProgramCache]: Analyzing trace with hash -843400768, now seen corresponding path program 3 times [2024-06-14 13:34:21,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:21,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256456377] [2024-06-14 13:34:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:21,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:22,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:22,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:22,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256456377] [2024-06-14 13:34:22,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256456377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:22,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:22,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:22,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089294969] [2024-06-14 13:34:22,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:22,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:22,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:22,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:22,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:22,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:22,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 89 transitions, 714 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:22,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:22,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:22,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:22,687 INFO L124 PetriNetUnfolderBase]: 244/460 cut-off events. [2024-06-14 13:34:22,687 INFO L125 PetriNetUnfolderBase]: For 6161/6167 co-relation queries the response was YES. [2024-06-14 13:34:22,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2203 conditions, 460 events. 244/460 cut-off events. For 6161/6167 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1927 event pairs, 41 based on Foata normal form. 6/462 useless extension candidates. Maximal degree in co-relation 2148. Up to 347 conditions per place. [2024-06-14 13:34:22,690 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 80 selfloop transitions, 23 changer transitions 0/105 dead transitions. [2024-06-14 13:34:22,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 105 transitions, 1034 flow [2024-06-14 13:34:22,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:22,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-14 13:34:22,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 13:34:22,692 INFO L175 Difference]: Start difference. First operand has 110 places, 89 transitions, 714 flow. Second operand 8 states and 87 transitions. [2024-06-14 13:34:22,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 105 transitions, 1034 flow [2024-06-14 13:34:22,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 105 transitions, 986 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 13:34:22,705 INFO L231 Difference]: Finished difference. Result has 112 places, 91 transitions, 740 flow [2024-06-14 13:34:22,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=740, PETRI_PLACES=112, PETRI_TRANSITIONS=91} [2024-06-14 13:34:22,706 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-14 13:34:22,706 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 91 transitions, 740 flow [2024-06-14 13:34:22,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:22,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:22,706 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 13:34:22,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 13:34:22,706 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 13:34:22,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:22,707 INFO L85 PathProgramCache]: Analyzing trace with hash 832328410, now seen corresponding path program 4 times [2024-06-14 13:34:22,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:22,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357382056] [2024-06-14 13:34:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:22,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:23,497 INFO 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 13:34:23,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:23,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357382056] [2024-06-14 13:34:23,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357382056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:23,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:23,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:23,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121594692] [2024-06-14 13:34:23,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:23,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:23,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:23,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:23,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:23,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:23,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 91 transitions, 740 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:23,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:23,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:23,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:23,840 INFO L124 PetriNetUnfolderBase]: 260/487 cut-off events. [2024-06-14 13:34:23,841 INFO L125 PetriNetUnfolderBase]: For 6272/6272 co-relation queries the response was YES. [2024-06-14 13:34:23,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2343 conditions, 487 events. 260/487 cut-off events. For 6272/6272 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2074 event pairs, 40 based on Foata normal form. 2/484 useless extension candidates. Maximal degree in co-relation 2287. Up to 408 conditions per place. [2024-06-14 13:34:23,845 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 85 selfloop transitions, 27 changer transitions 0/114 dead transitions. [2024-06-14 13:34:23,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 114 transitions, 1119 flow [2024-06-14 13:34:23,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:23,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:23,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-14 13:34:23,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34814814814814815 [2024-06-14 13:34:23,855 INFO L175 Difference]: Start difference. First operand has 112 places, 91 transitions, 740 flow. Second operand 9 states and 94 transitions. [2024-06-14 13:34:23,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 114 transitions, 1119 flow [2024-06-14 13:34:23,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 114 transitions, 1074 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-14 13:34:23,877 INFO L231 Difference]: Finished difference. Result has 121 places, 101 transitions, 910 flow [2024-06-14 13:34:23,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=910, PETRI_PLACES=121, PETRI_TRANSITIONS=101} [2024-06-14 13:34:23,877 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2024-06-14 13:34:23,878 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 101 transitions, 910 flow [2024-06-14 13:34:23,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:23,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:23,878 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 13:34:23,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 13:34:23,878 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 13:34:23,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:23,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2064011554, now seen corresponding path program 1 times [2024-06-14 13:34:23,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:23,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391204204] [2024-06-14 13:34:23,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:23,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:24,622 INFO 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 13:34:24,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:24,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391204204] [2024-06-14 13:34:24,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391204204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:24,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:24,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:24,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815410813] [2024-06-14 13:34:24,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:24,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:24,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:24,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:24,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:24,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:24,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 101 transitions, 910 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:24,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:24,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:24,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:24,949 INFO L124 PetriNetUnfolderBase]: 282/534 cut-off events. [2024-06-14 13:34:24,949 INFO L125 PetriNetUnfolderBase]: For 9682/9682 co-relation queries the response was YES. [2024-06-14 13:34:24,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2601 conditions, 534 events. 282/534 cut-off events. For 9682/9682 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2355 event pairs, 45 based on Foata normal form. 10/539 useless extension candidates. Maximal degree in co-relation 2539. Up to 400 conditions per place. [2024-06-14 13:34:24,954 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 84 selfloop transitions, 23 changer transitions 12/121 dead transitions. [2024-06-14 13:34:24,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 121 transitions, 1228 flow [2024-06-14 13:34:24,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:24,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-14 13:34:24,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592592592592593 [2024-06-14 13:34:24,955 INFO L175 Difference]: Start difference. First operand has 121 places, 101 transitions, 910 flow. Second operand 9 states and 97 transitions. [2024-06-14 13:34:24,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 121 transitions, 1228 flow [2024-06-14 13:34:24,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 121 transitions, 1201 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 13:34:24,974 INFO L231 Difference]: Finished difference. Result has 128 places, 99 transitions, 911 flow [2024-06-14 13:34:24,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=911, PETRI_PLACES=128, PETRI_TRANSITIONS=99} [2024-06-14 13:34:24,975 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-14 13:34:24,975 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 99 transitions, 911 flow [2024-06-14 13:34:24,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:24,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:24,975 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 13:34:24,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 13:34:24,975 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 13:34:24,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:24,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1471924532, now seen corresponding path program 2 times [2024-06-14 13:34:24,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:24,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110439133] [2024-06-14 13:34:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:24,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:25,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:25,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:25,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110439133] [2024-06-14 13:34:25,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110439133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:25,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:25,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:25,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081480383] [2024-06-14 13:34:25,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:25,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:25,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:25,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:25,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:25,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:25,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 99 transitions, 911 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 13:34:25,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:25,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:25,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:25,786 INFO L124 PetriNetUnfolderBase]: 300/580 cut-off events. [2024-06-14 13:34:25,786 INFO L125 PetriNetUnfolderBase]: For 14403/14403 co-relation queries the response was YES. [2024-06-14 13:34:25,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3045 conditions, 580 events. 300/580 cut-off events. For 14403/14403 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2671 event pairs, 56 based on Foata normal form. 8/582 useless extension candidates. Maximal degree in co-relation 2981. Up to 223 conditions per place. [2024-06-14 13:34:25,789 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 66 selfloop transitions, 45 changer transitions 6/119 dead transitions. [2024-06-14 13:34:25,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 119 transitions, 1283 flow [2024-06-14 13:34:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-14 13:34:25,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-14 13:34:25,791 INFO L175 Difference]: Start difference. First operand has 128 places, 99 transitions, 911 flow. Second operand 8 states and 98 transitions. [2024-06-14 13:34:25,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 119 transitions, 1283 flow [2024-06-14 13:34:25,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 119 transitions, 1229 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 13:34:25,810 INFO L231 Difference]: Finished difference. Result has 126 places, 98 transitions, 947 flow [2024-06-14 13:34:25,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=947, PETRI_PLACES=126, PETRI_TRANSITIONS=98} [2024-06-14 13:34:25,811 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 97 predicate places. [2024-06-14 13:34:25,811 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 98 transitions, 947 flow [2024-06-14 13:34:25,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 13:34:25,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:25,811 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 13:34:25,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 13:34:25,812 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 13:34:25,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:25,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1471931972, now seen corresponding path program 3 times [2024-06-14 13:34:25,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:25,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995516379] [2024-06-14 13:34:25,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:25,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:26,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:26,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:26,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995516379] [2024-06-14 13:34:26,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995516379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:26,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:26,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:26,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314359546] [2024-06-14 13:34:26,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:26,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:26,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:26,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:26,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:26,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:26,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 98 transitions, 947 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 13:34:26,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:26,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:26,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:26,602 INFO L124 PetriNetUnfolderBase]: 304/592 cut-off events. [2024-06-14 13:34:26,602 INFO L125 PetriNetUnfolderBase]: For 16039/16039 co-relation queries the response was YES. [2024-06-14 13:34:26,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3136 conditions, 592 events. 304/592 cut-off events. For 16039/16039 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2768 event pairs, 68 based on Foata normal form. 12/598 useless extension candidates. Maximal degree in co-relation 3073. Up to 348 conditions per place. [2024-06-14 13:34:26,606 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 60 selfloop transitions, 45 changer transitions 7/114 dead transitions. [2024-06-14 13:34:26,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 114 transitions, 1239 flow [2024-06-14 13:34:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:26,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-14 13:34:26,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 13:34:26,607 INFO L175 Difference]: Start difference. First operand has 126 places, 98 transitions, 947 flow. Second operand 8 states and 96 transitions. [2024-06-14 13:34:26,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 114 transitions, 1239 flow [2024-06-14 13:34:26,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 114 transitions, 1147 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 13:34:26,627 INFO L231 Difference]: Finished difference. Result has 126 places, 96 transitions, 940 flow [2024-06-14 13:34:26,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=940, PETRI_PLACES=126, PETRI_TRANSITIONS=96} [2024-06-14 13:34:26,628 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 97 predicate places. [2024-06-14 13:34:26,628 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 96 transitions, 940 flow [2024-06-14 13:34:26,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 13:34:26,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:26,628 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 13:34:26,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 13:34:26,628 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 13:34:26,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1477646264, now seen corresponding path program 5 times [2024-06-14 13:34:26,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:26,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743628364] [2024-06-14 13:34:26,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:26,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:26,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:27,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:27,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:27,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743628364] [2024-06-14 13:34:27,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743628364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:27,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:27,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:27,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919661480] [2024-06-14 13:34:27,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:27,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:27,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:27,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:27,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:27,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:27,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 96 transitions, 940 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 13:34:27,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:27,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:27,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:27,449 INFO L124 PetriNetUnfolderBase]: 248/480 cut-off events. [2024-06-14 13:34:27,449 INFO L125 PetriNetUnfolderBase]: For 7433/7433 co-relation queries the response was YES. [2024-06-14 13:34:27,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2486 conditions, 480 events. 248/480 cut-off events. For 7433/7433 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2122 event pairs, 44 based on Foata normal form. 2/476 useless extension candidates. Maximal degree in co-relation 2423. Up to 284 conditions per place. [2024-06-14 13:34:27,452 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 66 selfloop transitions, 40 changer transitions 0/108 dead transitions. [2024-06-14 13:34:27,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 108 transitions, 1200 flow [2024-06-14 13:34:27,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:27,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:27,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 13:34:27,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-14 13:34:27,453 INFO L175 Difference]: Start difference. First operand has 126 places, 96 transitions, 940 flow. Second operand 8 states and 89 transitions. [2024-06-14 13:34:27,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 108 transitions, 1200 flow [2024-06-14 13:34:27,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 108 transitions, 1082 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 13:34:27,469 INFO L231 Difference]: Finished difference. Result has 127 places, 97 transitions, 920 flow [2024-06-14 13:34:27,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=920, PETRI_PLACES=127, PETRI_TRANSITIONS=97} [2024-06-14 13:34:27,469 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-06-14 13:34:27,469 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 97 transitions, 920 flow [2024-06-14 13:34:27,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 13:34:27,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:27,470 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 13:34:27,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 13:34:27,470 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 13:34:27,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:27,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1477496162, now seen corresponding path program 4 times [2024-06-14 13:34:27,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:27,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670836043] [2024-06-14 13:34:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:27,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:28,125 INFO 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 13:34:28,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:28,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670836043] [2024-06-14 13:34:28,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670836043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:28,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:28,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:28,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849850360] [2024-06-14 13:34:28,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:28,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:28,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:28,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:28,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:28,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:28,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 97 transitions, 920 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:28,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:28,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:28,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:28,381 INFO L124 PetriNetUnfolderBase]: 270/526 cut-off events. [2024-06-14 13:34:28,381 INFO L125 PetriNetUnfolderBase]: For 11233/11233 co-relation queries the response was YES. [2024-06-14 13:34:28,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2613 conditions, 526 events. 270/526 cut-off events. For 11233/11233 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2395 event pairs, 48 based on Foata normal form. 10/530 useless extension candidates. Maximal degree in co-relation 2549. Up to 321 conditions per place. [2024-06-14 13:34:28,384 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 67 selfloop transitions, 36 changer transitions 11/116 dead transitions. [2024-06-14 13:34:28,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 116 transitions, 1232 flow [2024-06-14 13:34:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:28,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:28,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-14 13:34:28,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-14 13:34:28,386 INFO L175 Difference]: Start difference. First operand has 127 places, 97 transitions, 920 flow. Second operand 9 states and 100 transitions. [2024-06-14 13:34:28,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 116 transitions, 1232 flow [2024-06-14 13:34:28,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 116 transitions, 1140 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-14 13:34:28,403 INFO L231 Difference]: Finished difference. Result has 131 places, 96 transitions, 904 flow [2024-06-14 13:34:28,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=904, PETRI_PLACES=131, PETRI_TRANSITIONS=96} [2024-06-14 13:34:28,404 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 102 predicate places. [2024-06-14 13:34:28,404 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 96 transitions, 904 flow [2024-06-14 13:34:28,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:28,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:28,404 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 13:34:28,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 13:34:28,404 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 13:34:28,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:28,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1477649984, now seen corresponding path program 6 times [2024-06-14 13:34:28,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:28,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801365923] [2024-06-14 13:34:28,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:28,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:29,045 INFO 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 13:34:29,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:29,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801365923] [2024-06-14 13:34:29,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801365923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:29,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:29,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:29,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504321650] [2024-06-14 13:34:29,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:29,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:29,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:29,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:29,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:29,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:29,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 96 transitions, 904 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 13:34:29,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:29,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:29,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:29,211 INFO L124 PetriNetUnfolderBase]: 241/471 cut-off events. [2024-06-14 13:34:29,211 INFO L125 PetriNetUnfolderBase]: For 7359/7359 co-relation queries the response was YES. [2024-06-14 13:34:29,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2351 conditions, 471 events. 241/471 cut-off events. For 7359/7359 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2085 event pairs, 43 based on Foata normal form. 2/467 useless extension candidates. Maximal degree in co-relation 2285. Up to 243 conditions per place. [2024-06-14 13:34:29,214 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 63 selfloop transitions, 42 changer transitions 0/107 dead transitions. [2024-06-14 13:34:29,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 107 transitions, 1146 flow [2024-06-14 13:34:29,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:29,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:29,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 13:34:29,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-14 13:34:29,215 INFO L175 Difference]: Start difference. First operand has 131 places, 96 transitions, 904 flow. Second operand 8 states and 89 transitions. [2024-06-14 13:34:29,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 107 transitions, 1146 flow [2024-06-14 13:34:29,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 107 transitions, 1068 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-14 13:34:29,231 INFO L231 Difference]: Finished difference. Result has 129 places, 96 transitions, 915 flow [2024-06-14 13:34:29,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=915, PETRI_PLACES=129, PETRI_TRANSITIONS=96} [2024-06-14 13:34:29,232 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 100 predicate places. [2024-06-14 13:34:29,232 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 96 transitions, 915 flow [2024-06-14 13:34:29,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 13:34:29,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:29,232 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 13:34:29,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 13:34:29,233 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 13:34:29,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:29,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1472133782, now seen corresponding path program 5 times [2024-06-14 13:34:29,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:29,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862190787] [2024-06-14 13:34:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:29,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:29,891 INFO 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 13:34:29,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:29,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862190787] [2024-06-14 13:34:29,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862190787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:29,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:29,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:29,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048165725] [2024-06-14 13:34:29,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:29,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:29,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:29,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:29,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:29,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:29,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 96 transitions, 915 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:29,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:29,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:29,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:30,176 INFO L124 PetriNetUnfolderBase]: 257/507 cut-off events. [2024-06-14 13:34:30,176 INFO L125 PetriNetUnfolderBase]: For 11013/11013 co-relation queries the response was YES. [2024-06-14 13:34:30,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 507 events. 257/507 cut-off events. For 11013/11013 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2287 event pairs, 41 based on Foata normal form. 10/511 useless extension candidates. Maximal degree in co-relation 2407. Up to 280 conditions per place. [2024-06-14 13:34:30,179 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 59 selfloop transitions, 42 changer transitions 10/113 dead transitions. [2024-06-14 13:34:30,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 113 transitions, 1203 flow [2024-06-14 13:34:30,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:30,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:30,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 13:34:30,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-14 13:34:30,182 INFO L175 Difference]: Start difference. First operand has 129 places, 96 transitions, 915 flow. Second operand 9 states and 102 transitions. [2024-06-14 13:34:30,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 113 transitions, 1203 flow [2024-06-14 13:34:30,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 113 transitions, 1098 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-14 13:34:30,201 INFO L231 Difference]: Finished difference. Result has 131 places, 91 transitions, 858 flow [2024-06-14 13:34:30,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=810, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=858, PETRI_PLACES=131, PETRI_TRANSITIONS=91} [2024-06-14 13:34:30,204 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 102 predicate places. [2024-06-14 13:34:30,204 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 91 transitions, 858 flow [2024-06-14 13:34:30,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:30,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:30,204 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 13:34:30,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 13:34:30,204 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 13:34:30,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:30,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1951105990, now seen corresponding path program 6 times [2024-06-14 13:34:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:30,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235022284] [2024-06-14 13:34:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:30,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:30,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:30,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235022284] [2024-06-14 13:34:30,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235022284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:30,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:30,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:30,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622538958] [2024-06-14 13:34:30,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:30,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:30,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:30,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:30,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:30,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 91 transitions, 858 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:30,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:30,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:30,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:31,057 INFO L124 PetriNetUnfolderBase]: 243/489 cut-off events. [2024-06-14 13:34:31,058 INFO L125 PetriNetUnfolderBase]: For 11607/11607 co-relation queries the response was YES. [2024-06-14 13:34:31,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 489 events. 243/489 cut-off events. For 11607/11607 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2230 event pairs, 55 based on Foata normal form. 10/493 useless extension candidates. Maximal degree in co-relation 2281. Up to 272 conditions per place. [2024-06-14 13:34:31,061 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 63 selfloop transitions, 33 changer transitions 9/107 dead transitions. [2024-06-14 13:34:31,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 107 transitions, 1128 flow [2024-06-14 13:34:31,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:31,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:31,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-14 13:34:31,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-14 13:34:31,062 INFO L175 Difference]: Start difference. First operand has 131 places, 91 transitions, 858 flow. Second operand 9 states and 102 transitions. [2024-06-14 13:34:31,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 107 transitions, 1128 flow [2024-06-14 13:34:31,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 107 transitions, 1010 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 13:34:31,079 INFO L231 Difference]: Finished difference. Result has 128 places, 88 transitions, 797 flow [2024-06-14 13:34:31,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=797, PETRI_PLACES=128, PETRI_TRANSITIONS=88} [2024-06-14 13:34:31,080 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-14 13:34:31,080 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 88 transitions, 797 flow [2024-06-14 13:34:31,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:31,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:31,080 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 13:34:31,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 13:34:31,081 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 13:34:31,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:31,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1958465080, now seen corresponding path program 7 times [2024-06-14 13:34:31,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:31,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501442239] [2024-06-14 13:34:31,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:31,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:31,541 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 13:34:31,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:31,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501442239] [2024-06-14 13:34:31,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501442239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:31,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:31,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:31,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378140550] [2024-06-14 13:34:31,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:31,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:31,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:31,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:31,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:31,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:31,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 88 transitions, 797 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 13:34:31,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:31,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:31,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:31,720 INFO L124 PetriNetUnfolderBase]: 244/500 cut-off events. [2024-06-14 13:34:31,720 INFO L125 PetriNetUnfolderBase]: For 13368/13368 co-relation queries the response was YES. [2024-06-14 13:34:31,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 500 events. 244/500 cut-off events. For 13368/13368 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2294 event pairs, 64 based on Foata normal form. 8/502 useless extension candidates. Maximal degree in co-relation 2383. Up to 247 conditions per place. [2024-06-14 13:34:31,723 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 64 selfloop transitions, 30 changer transitions 9/105 dead transitions. [2024-06-14 13:34:31,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 105 transitions, 1121 flow [2024-06-14 13:34:31,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:31,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 13:34:31,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041666666666667 [2024-06-14 13:34:31,724 INFO L175 Difference]: Start difference. First operand has 128 places, 88 transitions, 797 flow. Second operand 8 states and 97 transitions. [2024-06-14 13:34:31,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 105 transitions, 1121 flow [2024-06-14 13:34:31,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 105 transitions, 1044 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 13:34:31,745 INFO L231 Difference]: Finished difference. Result has 125 places, 84 transitions, 763 flow [2024-06-14 13:34:31,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=763, PETRI_PLACES=125, PETRI_TRANSITIONS=84} [2024-06-14 13:34:31,746 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 96 predicate places. [2024-06-14 13:34:31,746 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 84 transitions, 763 flow [2024-06-14 13:34:31,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 13:34:31,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:31,746 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 13:34:31,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 13:34:31,747 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 13:34:31,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:31,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1958724550, now seen corresponding path program 8 times [2024-06-14 13:34:31,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:31,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515793365] [2024-06-14 13:34:31,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:31,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:32,241 INFO 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 13:34:32,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:32,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515793365] [2024-06-14 13:34:32,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515793365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:32,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:32,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:32,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587686882] [2024-06-14 13:34:32,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:32,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:32,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:32,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:32,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:32,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:32,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 84 transitions, 763 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 13:34:32,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:32,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:32,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:32,424 INFO L124 PetriNetUnfolderBase]: 236/492 cut-off events. [2024-06-14 13:34:32,424 INFO L125 PetriNetUnfolderBase]: For 13477/13477 co-relation queries the response was YES. [2024-06-14 13:34:32,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2423 conditions, 492 events. 236/492 cut-off events. For 13477/13477 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2270 event pairs, 67 based on Foata normal form. 8/494 useless extension candidates. Maximal degree in co-relation 2361. Up to 189 conditions per place. [2024-06-14 13:34:32,427 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 62 selfloop transitions, 24 changer transitions 11/99 dead transitions. [2024-06-14 13:34:32,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 99 transitions, 1057 flow [2024-06-14 13:34:32,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:32,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-14 13:34:32,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37083333333333335 [2024-06-14 13:34:32,428 INFO L175 Difference]: Start difference. First operand has 125 places, 84 transitions, 763 flow. Second operand 8 states and 89 transitions. [2024-06-14 13:34:32,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 99 transitions, 1057 flow [2024-06-14 13:34:32,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 99 transitions, 985 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 13:34:32,445 INFO L231 Difference]: Finished difference. Result has 121 places, 79 transitions, 718 flow [2024-06-14 13:34:32,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=718, PETRI_PLACES=121, PETRI_TRANSITIONS=79} [2024-06-14 13:34:32,446 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 92 predicate places. [2024-06-14 13:34:32,446 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 79 transitions, 718 flow [2024-06-14 13:34:32,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 13:34:32,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:32,447 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 13:34:32,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 13:34:32,447 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 13:34:32,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:32,447 INFO L85 PathProgramCache]: Analyzing trace with hash -802638870, now seen corresponding path program 7 times [2024-06-14 13:34:32,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:32,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786054668] [2024-06-14 13:34:32,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:32,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:32,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:33,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:33,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786054668] [2024-06-14 13:34:33,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786054668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:33,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:33,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:33,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108552402] [2024-06-14 13:34:33,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:33,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:33,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:33,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:33,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:33,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 30 [2024-06-14 13:34:33,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 79 transitions, 718 flow. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 13:34:33,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:33,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 30 [2024-06-14 13:34:33,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:33,253 INFO L124 PetriNetUnfolderBase]: 210/440 cut-off events. [2024-06-14 13:34:33,253 INFO L125 PetriNetUnfolderBase]: For 9632/9637 co-relation queries the response was YES. [2024-06-14 13:34:33,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2075 conditions, 440 events. 210/440 cut-off events. For 9632/9637 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1973 event pairs, 48 based on Foata normal form. 11/442 useless extension candidates. Maximal degree in co-relation 2015. Up to 239 conditions per place. [2024-06-14 13:34:33,256 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 44 selfloop transitions, 24 changer transitions 23/99 dead transitions. [2024-06-14 13:34:33,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 99 transitions, 1011 flow [2024-06-14 13:34:33,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:33,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:33,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-14 13:34:33,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 13:34:33,272 INFO L175 Difference]: Start difference. First operand has 121 places, 79 transitions, 718 flow. Second operand 8 states and 93 transitions. [2024-06-14 13:34:33,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 99 transitions, 1011 flow [2024-06-14 13:34:33,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 99 transitions, 940 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 13:34:33,285 INFO L231 Difference]: Finished difference. Result has 118 places, 68 transitions, 652 flow [2024-06-14 13:34:33,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=652, PETRI_PLACES=118, PETRI_TRANSITIONS=68} [2024-06-14 13:34:33,286 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-06-14 13:34:33,286 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 68 transitions, 652 flow [2024-06-14 13:34:33,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 13:34:33,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:33,286 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 13:34:33,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 13:34:33,286 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 13:34:33,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:33,287 INFO L85 PathProgramCache]: Analyzing trace with hash 302991278, now seen corresponding path program 8 times [2024-06-14 13:34:33,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:33,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477554259] [2024-06-14 13:34:33,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:33,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:33,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:33,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477554259] [2024-06-14 13:34:33,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477554259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:33,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:33,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:33,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325977699] [2024-06-14 13:34:33,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:33,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:33,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:33,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:33,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:33,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:33,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 68 transitions, 652 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:33,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:33,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:33,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:34,163 INFO L124 PetriNetUnfolderBase]: 158/342 cut-off events. [2024-06-14 13:34:34,163 INFO L125 PetriNetUnfolderBase]: For 5578/5578 co-relation queries the response was YES. [2024-06-14 13:34:34,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1651 conditions, 342 events. 158/342 cut-off events. For 5578/5578 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1420 event pairs, 48 based on Foata normal form. 2/340 useless extension candidates. Maximal degree in co-relation 1592. Up to 266 conditions per place. [2024-06-14 13:34:34,165 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 54 selfloop transitions, 25 changer transitions 0/81 dead transitions. [2024-06-14 13:34:34,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 81 transitions, 846 flow [2024-06-14 13:34:34,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:34,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-14 13:34:34,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34444444444444444 [2024-06-14 13:34:34,181 INFO L175 Difference]: Start difference. First operand has 118 places, 68 transitions, 652 flow. Second operand 9 states and 93 transitions. [2024-06-14 13:34:34,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 81 transitions, 846 flow [2024-06-14 13:34:34,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 81 transitions, 797 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-14 13:34:34,208 INFO L231 Difference]: Finished difference. Result has 110 places, 68 transitions, 657 flow [2024-06-14 13:34:34,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=657, PETRI_PLACES=110, PETRI_TRANSITIONS=68} [2024-06-14 13:34:34,209 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2024-06-14 13:34:34,209 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 68 transitions, 657 flow [2024-06-14 13:34:34,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 13:34:34,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:34,210 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 13:34:34,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 13:34:34,210 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 13:34:34,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:34,211 INFO L85 PathProgramCache]: Analyzing trace with hash -433711833, now seen corresponding path program 1 times [2024-06-14 13:34:34,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:34,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856950882] [2024-06-14 13:34:34,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:34,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:34,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 13:34:34,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:34,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856950882] [2024-06-14 13:34:34,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856950882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:34,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:34,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:34,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107024264] [2024-06-14 13:34:34,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:34,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:34,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:34,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:34,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:34,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:34,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 68 transitions, 657 flow. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:34,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:34,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:34,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:34,963 INFO L124 PetriNetUnfolderBase]: 151/328 cut-off events. [2024-06-14 13:34:34,963 INFO L125 PetriNetUnfolderBase]: For 3820/3820 co-relation queries the response was YES. [2024-06-14 13:34:34,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1437 conditions, 328 events. 151/328 cut-off events. For 3820/3820 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1365 event pairs, 28 based on Foata normal form. 6/328 useless extension candidates. Maximal degree in co-relation 1383. Up to 183 conditions per place. [2024-06-14 13:34:34,965 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 46 selfloop transitions, 10 changer transitions 23/81 dead transitions. [2024-06-14 13:34:34,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 81 transitions, 845 flow [2024-06-14 13:34:34,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:34,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-14 13:34:34,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-14 13:34:34,966 INFO L175 Difference]: Start difference. First operand has 110 places, 68 transitions, 657 flow. Second operand 8 states and 81 transitions. [2024-06-14 13:34:34,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 81 transitions, 845 flow [2024-06-14 13:34:34,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 81 transitions, 763 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 13:34:34,973 INFO L231 Difference]: Finished difference. Result has 108 places, 57 transitions, 494 flow [2024-06-14 13:34:34,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=494, PETRI_PLACES=108, PETRI_TRANSITIONS=57} [2024-06-14 13:34:34,973 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 79 predicate places. [2024-06-14 13:34:34,973 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 57 transitions, 494 flow [2024-06-14 13:34:34,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:34,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:34,974 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 13:34:34,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 13:34:34,974 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 13:34:34,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:34,974 INFO L85 PathProgramCache]: Analyzing trace with hash -2093963089, now seen corresponding path program 2 times [2024-06-14 13:34:34,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:34,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131598019] [2024-06-14 13:34:34,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:34,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:35,732 INFO 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 13:34:35,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:35,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131598019] [2024-06-14 13:34:35,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131598019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:35,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:35,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:34:35,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789878129] [2024-06-14 13:34:35,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:35,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:34:35,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:35,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:34:35,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:34:35,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:35,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 57 transitions, 494 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:35,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:35,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:35,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:35,945 INFO L124 PetriNetUnfolderBase]: 112/257 cut-off events. [2024-06-14 13:34:35,945 INFO L125 PetriNetUnfolderBase]: For 3788/3788 co-relation queries the response was YES. [2024-06-14 13:34:35,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1098 conditions, 257 events. 112/257 cut-off events. For 3788/3788 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 974 event pairs, 11 based on Foata normal form. 6/259 useless extension candidates. Maximal degree in co-relation 1060. Up to 118 conditions per place. [2024-06-14 13:34:35,947 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 37 selfloop transitions, 14 changer transitions 18/71 dead transitions. [2024-06-14 13:34:35,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 71 transitions, 668 flow [2024-06-14 13:34:35,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:35,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:35,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-14 13:34:35,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296296296296296 [2024-06-14 13:34:35,948 INFO L175 Difference]: Start difference. First operand has 108 places, 57 transitions, 494 flow. Second operand 9 states and 89 transitions. [2024-06-14 13:34:35,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 71 transitions, 668 flow [2024-06-14 13:34:35,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 71 transitions, 630 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 13:34:35,953 INFO L231 Difference]: Finished difference. Result has 98 places, 46 transitions, 370 flow [2024-06-14 13:34:35,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=370, PETRI_PLACES=98, PETRI_TRANSITIONS=46} [2024-06-14 13:34:35,953 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 69 predicate places. [2024-06-14 13:34:35,953 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 46 transitions, 370 flow [2024-06-14 13:34:35,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:35,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:35,953 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 13:34:35,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 13:34:35,954 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 13:34:35,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash -375504063, now seen corresponding path program 3 times [2024-06-14 13:34:35,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:35,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538752323] [2024-06-14 13:34:35,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:35,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:36,595 INFO 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 13:34:36,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:36,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538752323] [2024-06-14 13:34:36,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538752323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:36,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:36,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 13:34:36,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761376105] [2024-06-14 13:34:36,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:36,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 13:34:36,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:36,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 13:34:36,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 13:34:36,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:36,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 46 transitions, 370 flow. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:36,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:36,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:36,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:36,803 INFO L124 PetriNetUnfolderBase]: 89/212 cut-off events. [2024-06-14 13:34:36,804 INFO L125 PetriNetUnfolderBase]: For 2827/2827 co-relation queries the response was YES. [2024-06-14 13:34:36,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 212 events. 89/212 cut-off events. For 2827/2827 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 759 event pairs, 26 based on Foata normal form. 6/214 useless extension candidates. Maximal degree in co-relation 854. Up to 72 conditions per place. [2024-06-14 13:34:36,805 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 24 selfloop transitions, 9 changer transitions 20/55 dead transitions. [2024-06-14 13:34:36,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 55 transitions, 496 flow [2024-06-14 13:34:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:36,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2024-06-14 13:34:36,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31666666666666665 [2024-06-14 13:34:36,806 INFO L175 Difference]: Start difference. First operand has 98 places, 46 transitions, 370 flow. Second operand 8 states and 76 transitions. [2024-06-14 13:34:36,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 55 transitions, 496 flow [2024-06-14 13:34:36,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 55 transitions, 421 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-14 13:34:36,809 INFO L231 Difference]: Finished difference. Result has 85 places, 32 transitions, 213 flow [2024-06-14 13:34:36,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=85, PETRI_TRANSITIONS=32} [2024-06-14 13:34:36,810 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-14 13:34:36,810 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 32 transitions, 213 flow [2024-06-14 13:34:36,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:36,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:36,810 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 13:34:36,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 13:34:36,810 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 13:34:36,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:36,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1437491401, now seen corresponding path program 4 times [2024-06-14 13:34:36,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:36,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645011635] [2024-06-14 13:34:36,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:36,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:37,845 INFO 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 13:34:37,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:37,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645011635] [2024-06-14 13:34:37,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645011635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:37,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:37,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 13:34:37,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532281609] [2024-06-14 13:34:37,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:37,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 13:34:37,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:37,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 13:34:37,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 13:34:37,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:37,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 32 transitions, 213 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:37,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:37,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:37,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:37,972 INFO L124 PetriNetUnfolderBase]: 62/152 cut-off events. [2024-06-14 13:34:37,973 INFO L125 PetriNetUnfolderBase]: For 2060/2060 co-relation queries the response was YES. [2024-06-14 13:34:37,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 152 events. 62/152 cut-off events. For 2060/2060 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 445 event pairs, 7 based on Foata normal form. 6/154 useless extension candidates. Maximal degree in co-relation 561. Up to 38 conditions per place. [2024-06-14 13:34:37,973 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 18 selfloop transitions, 6 changer transitions 17/43 dead transitions. [2024-06-14 13:34:37,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 43 transitions, 319 flow [2024-06-14 13:34:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 13:34:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 13:34:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 79 transitions. [2024-06-14 13:34:37,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29259259259259257 [2024-06-14 13:34:37,974 INFO L175 Difference]: Start difference. First operand has 85 places, 32 transitions, 213 flow. Second operand 9 states and 79 transitions. [2024-06-14 13:34:37,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 43 transitions, 319 flow [2024-06-14 13:34:37,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 43 transitions, 271 flow, removed 10 selfloop flow, removed 16 redundant places. [2024-06-14 13:34:37,976 INFO L231 Difference]: Finished difference. Result has 65 places, 21 transitions, 111 flow [2024-06-14 13:34:37,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=111, PETRI_PLACES=65, PETRI_TRANSITIONS=21} [2024-06-14 13:34:37,977 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-14 13:34:37,977 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 21 transitions, 111 flow [2024-06-14 13:34:37,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:37,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 13:34:37,977 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 13:34:37,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 13:34:37,978 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 13:34:37,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 13:34:37,978 INFO L85 PathProgramCache]: Analyzing trace with hash -782699907, now seen corresponding path program 5 times [2024-06-14 13:34:37,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 13:34:37,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921646996] [2024-06-14 13:34:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 13:34:37,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 13:34:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 13:34:38,581 INFO 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 13:34:38,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 13:34:38,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921646996] [2024-06-14 13:34:38,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921646996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 13:34:38,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 13:34:38,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 13:34:38,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363386575] [2024-06-14 13:34:38,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 13:34:38,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 13:34:38,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 13:34:38,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 13:34:38,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 13:34:38,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-14 13:34:38,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 21 transitions, 111 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:38,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 13:34:38,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-14 13:34:38,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 13:34:38,724 INFO L124 PetriNetUnfolderBase]: 19/55 cut-off events. [2024-06-14 13:34:38,724 INFO L125 PetriNetUnfolderBase]: For 522/522 co-relation queries the response was YES. [2024-06-14 13:34:38,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 55 events. 19/55 cut-off events. For 522/522 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 6/60 useless extension candidates. Maximal degree in co-relation 154. Up to 24 conditions per place. [2024-06-14 13:34:38,725 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2024-06-14 13:34:38,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 25 transitions, 139 flow [2024-06-14 13:34:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 13:34:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 13:34:38,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 64 transitions. [2024-06-14 13:34:38,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26666666666666666 [2024-06-14 13:34:38,726 INFO L175 Difference]: Start difference. First operand has 65 places, 21 transitions, 111 flow. Second operand 8 states and 64 transitions. [2024-06-14 13:34:38,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 25 transitions, 139 flow [2024-06-14 13:34:38,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 25 transitions, 103 flow, removed 2 selfloop flow, removed 18 redundant places. [2024-06-14 13:34:38,726 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-14 13:34:38,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-14 13:34:38,727 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-14 13:34:38,727 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-14 13:34:38,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 13:34:38,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 13:34:38,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 13:34:38,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 13:34:38,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 13:34:38,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 13:34:38,730 INFO L445 BasicCegarLoop]: Path program histogram: [8, 8, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 13:34:38,732 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 13:34:38,733 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 13:34:38,735 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 13:34:38,736 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 13:34:38,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 01:34:38 BasicIcfg [2024-06-14 13:34:38,736 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 13:34:38,737 INFO L158 Benchmark]: Toolchain (without parser) took 42290.86ms. Allocated memory was 159.4MB in the beginning and 1.0GB in the end (delta: 857.7MB). Free memory was 128.4MB in the beginning and 663.6MB in the end (delta: -535.2MB). Peak memory consumption was 323.5MB. Max. memory is 16.1GB. [2024-06-14 13:34:38,737 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 159.4MB. Free memory is still 116.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 13:34:38,737 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory was 127.6MB in the beginning and 127.4MB in the end (delta: 174.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 13:34:38,737 INFO L158 Benchmark]: CACSL2BoogieTranslator took 604.72ms. Allocated memory is still 159.4MB. Free memory was 127.7MB in the beginning and 96.5MB in the end (delta: 31.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-14 13:34:38,737 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.67ms. Allocated memory is still 159.4MB. Free memory was 96.5MB in the beginning and 93.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 13:34:38,738 INFO L158 Benchmark]: Boogie Preprocessor took 59.34ms. Allocated memory is still 159.4MB. Free memory was 93.0MB in the beginning and 90.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 13:34:38,738 INFO L158 Benchmark]: RCFGBuilder took 676.82ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 90.2MB in the beginning and 193.8MB in the end (delta: -103.6MB). Peak memory consumption was 61.4MB. Max. memory is 16.1GB. [2024-06-14 13:34:38,738 INFO L158 Benchmark]: TraceAbstraction took 40882.32ms. Allocated memory was 232.8MB in the beginning and 1.0GB in the end (delta: 784.3MB). Free memory was 192.7MB in the beginning and 663.6MB in the end (delta: -470.8MB). Peak memory consumption was 312.5MB. Max. memory is 16.1GB. [2024-06-14 13:34:38,739 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 0.17ms. Allocated memory is still 159.4MB. Free memory is still 116.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory was 127.6MB in the beginning and 127.4MB in the end (delta: 174.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 604.72ms. Allocated memory is still 159.4MB. Free memory was 127.7MB in the beginning and 96.5MB in the end (delta: 31.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.67ms. Allocated memory is still 159.4MB. Free memory was 96.5MB in the beginning and 93.0MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.34ms. Allocated memory is still 159.4MB. Free memory was 93.0MB in the beginning and 90.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 676.82ms. Allocated memory was 159.4MB in the beginning and 232.8MB in the end (delta: 73.4MB). Free memory was 90.2MB in the beginning and 193.8MB in the end (delta: -103.6MB). Peak memory consumption was 61.4MB. Max. memory is 16.1GB. * TraceAbstraction took 40882.32ms. Allocated memory was 232.8MB in the beginning and 1.0GB in the end (delta: 784.3MB). Free memory was 192.7MB in the beginning and 663.6MB in the end (delta: -470.8MB). Peak memory consumption was 312.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 793]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 794]: 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, 47 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: 40.8s, OverallIterations: 49, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2231 SdHoareTripleChecker+Valid, 6.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1863 mSDsluCounter, 1384 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1195 mSDsCounter, 432 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9699 IncrementalHoareTripleChecker+Invalid, 10131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 432 mSolverCounterUnsat, 189 mSDtfsCounter, 9699 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 395 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=947occurred in iteration=34, InterpolantAutomatonStates: 369, 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, 0.4s SatisfiabilityAnalysisTime, 28.6s InterpolantComputationTime, 744 NumberOfCodeBlocks, 744 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 695 ConstructedInterpolants, 0 QuantifiedInterpolants, 27196 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 49 InterpolantComputations, 49 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 13:34:38,799 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