./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe029_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/safe029_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 21:33:08,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 21:33:08,623 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 21:33:08,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 21:33:08,626 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 21:33:08,640 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 21:33:08,641 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 21:33:08,641 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 21:33:08,641 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 21:33:08,642 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 21:33:08,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 21:33:08,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 21:33:08,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 21:33:08,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 21:33:08,643 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 21:33:08,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 21:33:08,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 21:33:08,644 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 21:33:08,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 21:33:08,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 21:33:08,644 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 21:33:08,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 21:33:08,650 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 21:33:08,650 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 21:33:08,651 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 21:33:08,651 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 21:33:08,651 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 21:33:08,651 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 21:33:08,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 21:33:08,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 21:33:08,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 21:33:08,652 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 21:33:08,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:33:08,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 21:33:08,653 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 21:33:08,653 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 21:33:08,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 21:33:08,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 21:33:08,654 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 21:33:08,654 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 21:33:08,655 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 21:33:08,660 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 21:33:08,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 21:33:08,660 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 21:33:08,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 21:33:08,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 21:33:08,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 21:33:08,924 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 21:33:08,925 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 21:33:08,926 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe029_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 21:33:09,033 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 21:33:09,033 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 21:33:09,033 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 21:33:10,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 21:33:10,293 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 21:33:10,293 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 21:33:10,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01122a547/20e3b0ef49a34aeabc812f7500dcade9/FLAGe4f8e3184 [2024-06-27 21:33:10,315 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01122a547/20e3b0ef49a34aeabc812f7500dcade9 [2024-06-27 21:33:10,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 21:33:10,316 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 21:33:10,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 21:33:10,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 21:33:10,321 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 21:33:10,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:33:09" (1/2) ... [2024-06-27 21:33:10,322 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697e5553 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:33:10, skipping insertion in model container [2024-06-27 21:33:10,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:33:09" (1/2) ... [2024-06-27 21:33:10,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@22b56701 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:33:10, skipping insertion in model container [2024-06-27 21:33:10,324 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:33:10" (2/2) ... [2024-06-27 21:33:10,324 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697e5553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10, skipping insertion in model container [2024-06-27 21:33:10,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:33:10" (2/2) ... [2024-06-27 21:33:10,324 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 21:33:10,372 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 21:33:10,373 INFO L97 edCorrectnessWitness]: Location invariant before [L794-L794] ((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2)) [2024-06-27 21:33:10,373 INFO L97 edCorrectnessWitness]: Location invariant before [L793-L793] ((((((((((((! multithreaded || y$read_delayed_var == 0) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2)) [2024-06-27 21:33:10,374 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 21:33:10,374 INFO L106 edCorrectnessWitness]: ghost_update [L791-L791] multithreaded = 1; [2024-06-27 21:33:10,410 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 21:33:10,733 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:33:10,744 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 21:33:10,848 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:33:10,874 INFO L206 MainTranslator]: Completed translation [2024-06-27 21:33:10,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10 WrapperNode [2024-06-27 21:33:10,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 21:33:10,876 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 21:33:10,876 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 21:33:10,876 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 21:33:10,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10" (1/1) ... [2024-06-27 21:33:10,895 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10" (1/1) ... [2024-06-27 21:33:10,928 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 130 [2024-06-27 21:33:10,929 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 21:33:10,929 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 21:33:10,930 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 21:33:10,930 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 21:33:10,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10" (1/1) ... [2024-06-27 21:33:10,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10" (1/1) ... [2024-06-27 21:33:10,949 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10" (1/1) ... [2024-06-27 21:33:10,974 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 21:33:10,974 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10" (1/1) ... [2024-06-27 21:33:10,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10" (1/1) ... [2024-06-27 21:33:10,994 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10" (1/1) ... [2024-06-27 21:33:11,021 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10" (1/1) ... [2024-06-27 21:33:11,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10" (1/1) ... [2024-06-27 21:33:11,024 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10" (1/1) ... [2024-06-27 21:33:11,026 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 21:33:11,027 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 21:33:11,027 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 21:33:11,027 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 21:33:11,027 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10" (1/1) ... [2024-06-27 21:33:11,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:33:11,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:33:11,087 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 21:33:11,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 21:33:11,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 21:33:11,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 21:33:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 21:33:11,124 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 21:33:11,124 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 21:33:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 21:33:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 21:33:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 21:33:11,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 21:33:11,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 21:33:11,127 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 21:33:11,230 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 21:33:11,232 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 21:33:11,447 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 21:33:11,447 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 21:33:11,596 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 21:33:11,596 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 21:33:11,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:33:11 BoogieIcfgContainer [2024-06-27 21:33:11,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 21:33:11,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 21:33:11,600 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 21:33:11,602 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 21:33:11,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:33:09" (1/4) ... [2024-06-27 21:33:11,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b13cb49 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:33:11, skipping insertion in model container [2024-06-27 21:33:11,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 09:33:10" (2/4) ... [2024-06-27 21:33:11,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b13cb49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:33:11, skipping insertion in model container [2024-06-27 21:33:11,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:33:10" (3/4) ... [2024-06-27 21:33:11,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b13cb49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:33:11, skipping insertion in model container [2024-06-27 21:33:11,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:33:11" (4/4) ... [2024-06-27 21:33:11,605 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 21:33:11,618 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 21:33:11,618 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 21:33:11,618 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 21:33:11,657 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 21:33:11,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 29 transitions, 66 flow [2024-06-27 21:33:11,710 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-06-27 21:33:11,710 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:33:11,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 0/27 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. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 21:33:11,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 29 transitions, 66 flow [2024-06-27 21:33:11,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 48 flow [2024-06-27 21:33:11,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 21:33:11,733 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;@2bd9f2e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 21:33:11,733 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 21:33:11,737 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 21:33:11,738 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 21:33:11,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:33:11,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:11,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 21:33:11,739 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)] === [2024-06-27 21:33:11,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:11,745 INFO L85 PathProgramCache]: Analyzing trace with hash 321409156, now seen corresponding path program 1 times [2024-06-27 21:33:11,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:11,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362495231] [2024-06-27 21:33:11,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:11,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:12,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:12,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362495231] [2024-06-27 21:33:12,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362495231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:12,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:12,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 21:33:12,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138287148] [2024-06-27 21:33:12,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:12,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:33:12,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:12,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:33:12,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:33:12,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-27 21:33:12,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:12,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:12,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-27 21:33:12,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:12,514 INFO L124 PetriNetUnfolderBase]: 162/296 cut-off events. [2024-06-27 21:33:12,514 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 21:33:12,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 296 events. 162/296 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1009 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. [2024-06-27 21:33:12,520 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-06-27 21:33:12,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 111 flow [2024-06-27 21:33:12,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:33:12,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:33:12,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2024-06-27 21:33:12,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2024-06-27 21:33:12,531 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 47 transitions. [2024-06-27 21:33:12,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 111 flow [2024-06-27 21:33:12,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 21:33:12,535 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 67 flow [2024-06-27 21:33:12,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-06-27 21:33:12,540 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-27 21:33:12,540 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 67 flow [2024-06-27 21:33:12,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:12,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:12,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:12,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 21:33:12,541 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)] === [2024-06-27 21:33:12,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:12,541 INFO L85 PathProgramCache]: Analyzing trace with hash -363415325, now seen corresponding path program 1 times [2024-06-27 21:33:12,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:12,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69365925] [2024-06-27 21:33:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:12,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:12,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:12,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69365925] [2024-06-27 21:33:12,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69365925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:12,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:12,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 21:33:12,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449244122] [2024-06-27 21:33:12,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:12,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 21:33:12,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:12,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 21:33:12,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 21:33:12,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-27 21:33:12,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:12,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:12,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-27 21:33:12,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:13,024 INFO L124 PetriNetUnfolderBase]: 159/291 cut-off events. [2024-06-27 21:33:13,024 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-27 21:33:13,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 291 events. 159/291 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. [2024-06-27 21:33:13,030 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2024-06-27 21:33:13,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 153 flow [2024-06-27 21:33:13,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:33:13,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:33:13,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-27 21:33:13,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2024-06-27 21:33:13,033 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 67 flow. Second operand 4 states and 60 transitions. [2024-06-27 21:33:13,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 153 flow [2024-06-27 21:33:13,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:33:13,037 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 91 flow [2024-06-27 21:33:13,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-06-27 21:33:13,037 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-27 21:33:13,038 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 91 flow [2024-06-27 21:33:13,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:13,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:13,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:13,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 21:33:13,038 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)] === [2024-06-27 21:33:13,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:13,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1619027845, now seen corresponding path program 1 times [2024-06-27 21:33:13,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:13,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331035981] [2024-06-27 21:33:13,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:13,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:13,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:13,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331035981] [2024-06-27 21:33:13,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331035981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:13,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:13,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:33:13,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252242156] [2024-06-27 21:33:13,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:13,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:33:13,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:13,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:33:13,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:33:13,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-27 21:33:13,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:13,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:13,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-27 21:33:13,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:13,471 INFO L124 PetriNetUnfolderBase]: 160/293 cut-off events. [2024-06-27 21:33:13,471 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-06-27 21:33:13,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 293 events. 160/293 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1015 event pairs, 56 based on Foata normal form. 3/295 useless extension candidates. Maximal degree in co-relation 744. Up to 248 conditions per place. [2024-06-27 21:33:13,474 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 33 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2024-06-27 21:33:13,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 245 flow [2024-06-27 21:33:13,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:33:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:33:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2024-06-27 21:33:13,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5448275862068965 [2024-06-27 21:33:13,477 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 91 flow. Second operand 5 states and 79 transitions. [2024-06-27 21:33:13,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 245 flow [2024-06-27 21:33:13,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 47 transitions, 236 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 21:33:13,480 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 158 flow [2024-06-27 21:33:13,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2024-06-27 21:33:13,481 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2024-06-27 21:33:13,481 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 158 flow [2024-06-27 21:33:13,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:13,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:13,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:13,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 21:33:13,482 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)] === [2024-06-27 21:33:13,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:13,483 INFO L85 PathProgramCache]: Analyzing trace with hash -934158844, now seen corresponding path program 1 times [2024-06-27 21:33:13,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:13,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752723398] [2024-06-27 21:33:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:13,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:13,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:13,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:13,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752723398] [2024-06-27 21:33:13,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752723398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:13,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:13,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:33:13,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424567055] [2024-06-27 21:33:13,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:13,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:33:13,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:13,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:33:13,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:33:14,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-27 21:33:14,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:14,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:14,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-27 21:33:14,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:14,148 INFO L124 PetriNetUnfolderBase]: 179/325 cut-off events. [2024-06-27 21:33:14,148 INFO L125 PetriNetUnfolderBase]: For 382/382 co-relation queries the response was YES. [2024-06-27 21:33:14,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 325 events. 179/325 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1153 event pairs, 40 based on Foata normal form. 5/329 useless extension candidates. Maximal degree in co-relation 975. Up to 204 conditions per place. [2024-06-27 21:33:14,150 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 45 selfloop transitions, 19 changer transitions 0/67 dead transitions. [2024-06-27 21:33:14,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 67 transitions, 400 flow [2024-06-27 21:33:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:33:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:33:14,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-27 21:33:14,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-06-27 21:33:14,154 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 158 flow. Second operand 6 states and 102 transitions. [2024-06-27 21:33:14,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 67 transitions, 400 flow [2024-06-27 21:33:14,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 67 transitions, 396 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 21:33:14,157 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 273 flow [2024-06-27 21:33:14,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2024-06-27 21:33:14,158 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2024-06-27 21:33:14,158 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 273 flow [2024-06-27 21:33:14,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:14,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:14,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:14,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 21:33:14,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 21:33:14,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:14,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1107631940, now seen corresponding path program 1 times [2024-06-27 21:33:14,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:14,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077252070] [2024-06-27 21:33:14,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:14,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:14,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:14,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:14,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077252070] [2024-06-27 21:33:14,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077252070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:14,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:14,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:33:14,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491571531] [2024-06-27 21:33:14,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:14,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:33:14,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:14,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:33:14,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:33:14,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-27 21:33:14,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 273 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:14,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:14,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-27 21:33:14,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:14,874 INFO L124 PetriNetUnfolderBase]: 199/377 cut-off events. [2024-06-27 21:33:14,874 INFO L125 PetriNetUnfolderBase]: For 787/787 co-relation queries the response was YES. [2024-06-27 21:33:14,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 377 events. 199/377 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1471 event pairs, 27 based on Foata normal form. 16/392 useless extension candidates. Maximal degree in co-relation 1323. Up to 172 conditions per place. [2024-06-27 21:33:14,876 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 49 selfloop transitions, 21 changer transitions 0/73 dead transitions. [2024-06-27 21:33:14,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 73 transitions, 503 flow [2024-06-27 21:33:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:33:14,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:33:14,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-27 21:33:14,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5665024630541872 [2024-06-27 21:33:14,877 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 273 flow. Second operand 7 states and 115 transitions. [2024-06-27 21:33:14,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 73 transitions, 503 flow [2024-06-27 21:33:14,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 73 transitions, 491 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 21:33:14,880 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 307 flow [2024-06-27 21:33:14,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=307, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-27 21:33:14,881 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 23 predicate places. [2024-06-27 21:33:14,881 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 307 flow [2024-06-27 21:33:14,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:14,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:14,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:14,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 21:33:14,882 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)] === [2024-06-27 21:33:14,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash 517624212, now seen corresponding path program 1 times [2024-06-27 21:33:14,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:14,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811003069] [2024-06-27 21:33:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:14,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:15,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:15,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:15,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811003069] [2024-06-27 21:33:15,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811003069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:15,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:15,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:33:15,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908363892] [2024-06-27 21:33:15,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:15,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:33:15,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:15,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:33:15,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:33:15,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:15,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 307 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:15,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:15,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:15,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:15,377 INFO L124 PetriNetUnfolderBase]: 197/374 cut-off events. [2024-06-27 21:33:15,377 INFO L125 PetriNetUnfolderBase]: For 886/886 co-relation queries the response was YES. [2024-06-27 21:33:15,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1457 conditions, 374 events. 197/374 cut-off events. For 886/886 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1449 event pairs, 58 based on Foata normal form. 1/374 useless extension candidates. Maximal degree in co-relation 1431. Up to 363 conditions per place. [2024-06-27 21:33:15,380 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 41 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2024-06-27 21:33:15,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 413 flow [2024-06-27 21:33:15,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:33:15,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:33:15,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2024-06-27 21:33:15,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36551724137931035 [2024-06-27 21:33:15,381 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 307 flow. Second operand 5 states and 53 transitions. [2024-06-27 21:33:15,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 413 flow [2024-06-27 21:33:15,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 367 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 21:33:15,385 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 278 flow [2024-06-27 21:33:15,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-06-27 21:33:15,385 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 23 predicate places. [2024-06-27 21:33:15,386 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 278 flow [2024-06-27 21:33:15,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:15,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:15,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:15,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 21:33:15,386 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)] === [2024-06-27 21:33:15,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:15,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1134382894, now seen corresponding path program 1 times [2024-06-27 21:33:15,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:15,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322490085] [2024-06-27 21:33:15,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:15,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:15,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:15,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322490085] [2024-06-27 21:33:15,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322490085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:15,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:15,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:33:15,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822771577] [2024-06-27 21:33:15,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:15,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:33:15,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:15,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:33:15,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:33:15,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:15,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:15,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:15,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:15,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:15,889 INFO L124 PetriNetUnfolderBase]: 193/368 cut-off events. [2024-06-27 21:33:15,889 INFO L125 PetriNetUnfolderBase]: For 926/926 co-relation queries the response was YES. [2024-06-27 21:33:15,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 368 events. 193/368 cut-off events. For 926/926 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1419 event pairs, 56 based on Foata normal form. 2/369 useless extension candidates. Maximal degree in co-relation 1346. Up to 351 conditions per place. [2024-06-27 21:33:15,891 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 41 selfloop transitions, 8 changer transitions 0/51 dead transitions. [2024-06-27 21:33:15,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 51 transitions, 392 flow [2024-06-27 21:33:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:33:15,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:33:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 62 transitions. [2024-06-27 21:33:15,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563218390804598 [2024-06-27 21:33:15,892 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 278 flow. Second operand 6 states and 62 transitions. [2024-06-27 21:33:15,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 51 transitions, 392 flow [2024-06-27 21:33:15,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 377 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 21:33:15,895 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 284 flow [2024-06-27 21:33:15,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-06-27 21:33:15,895 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 25 predicate places. [2024-06-27 21:33:15,896 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 284 flow [2024-06-27 21:33:15,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:15,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:15,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:15,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 21:33:15,896 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)] === [2024-06-27 21:33:15,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1615315823, now seen corresponding path program 1 times [2024-06-27 21:33:15,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:15,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400685429] [2024-06-27 21:33:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:15,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:16,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:16,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400685429] [2024-06-27 21:33:16,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400685429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:16,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:16,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:33:16,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128214215] [2024-06-27 21:33:16,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:16,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:33:16,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:16,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:33:16,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:33:16,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:16,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 284 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:16,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:16,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:16,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:16,342 INFO L124 PetriNetUnfolderBase]: 194/370 cut-off events. [2024-06-27 21:33:16,342 INFO L125 PetriNetUnfolderBase]: For 1057/1057 co-relation queries the response was YES. [2024-06-27 21:33:16,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1420 conditions, 370 events. 194/370 cut-off events. For 1057/1057 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1436 event pairs, 55 based on Foata normal form. 2/371 useless extension candidates. Maximal degree in co-relation 1392. Up to 325 conditions per place. [2024-06-27 21:33:16,344 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 41 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2024-06-27 21:33:16,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 446 flow [2024-06-27 21:33:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:33:16,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:33:16,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-27 21:33:16,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39655172413793105 [2024-06-27 21:33:16,345 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 284 flow. Second operand 6 states and 69 transitions. [2024-06-27 21:33:16,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 446 flow [2024-06-27 21:33:16,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 56 transitions, 420 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 21:33:16,348 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 309 flow [2024-06-27 21:33:16,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=309, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-27 21:33:16,349 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 25 predicate places. [2024-06-27 21:33:16,349 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 309 flow [2024-06-27 21:33:16,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:16,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:16,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:16,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 21:33:16,350 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)] === [2024-06-27 21:33:16,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:16,350 INFO L85 PathProgramCache]: Analyzing trace with hash -779326733, now seen corresponding path program 2 times [2024-06-27 21:33:16,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:16,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725242973] [2024-06-27 21:33:16,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:16,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:16,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:16,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:16,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725242973] [2024-06-27 21:33:16,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725242973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:16,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:16,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:33:16,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495110836] [2024-06-27 21:33:16,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:16,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:33:16,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:16,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:33:16,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:33:16,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:16,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 309 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:16,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:16,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:16,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:16,780 INFO L124 PetriNetUnfolderBase]: 189/360 cut-off events. [2024-06-27 21:33:16,781 INFO L125 PetriNetUnfolderBase]: For 1155/1155 co-relation queries the response was YES. [2024-06-27 21:33:16,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 360 events. 189/360 cut-off events. For 1155/1155 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1383 event pairs, 50 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 1381. Up to 346 conditions per place. [2024-06-27 21:33:16,783 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 42 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2024-06-27 21:33:16,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 423 flow [2024-06-27 21:33:16,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:33:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:33:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 61 transitions. [2024-06-27 21:33:16,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3505747126436782 [2024-06-27 21:33:16,784 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 309 flow. Second operand 6 states and 61 transitions. [2024-06-27 21:33:16,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 423 flow [2024-06-27 21:33:16,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 52 transitions, 408 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 21:33:16,787 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 315 flow [2024-06-27 21:33:16,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-27 21:33:16,788 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 28 predicate places. [2024-06-27 21:33:16,788 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 315 flow [2024-06-27 21:33:16,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:16,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:16,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:16,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 21:33:16,789 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)] === [2024-06-27 21:33:16,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:16,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1464817657, now seen corresponding path program 1 times [2024-06-27 21:33:16,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:16,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089038276] [2024-06-27 21:33:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:16,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:17,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:17,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089038276] [2024-06-27 21:33:17,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089038276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:17,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:17,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:33:17,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235429721] [2024-06-27 21:33:17,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:17,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:33:17,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:17,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:33:17,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:33:17,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:17,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 315 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:17,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:17,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:17,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:17,385 INFO L124 PetriNetUnfolderBase]: 209/394 cut-off events. [2024-06-27 21:33:17,385 INFO L125 PetriNetUnfolderBase]: For 1614/1614 co-relation queries the response was YES. [2024-06-27 21:33:17,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 394 events. 209/394 cut-off events. For 1614/1614 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1531 event pairs, 41 based on Foata normal form. 6/399 useless extension candidates. Maximal degree in co-relation 1504. Up to 244 conditions per place. [2024-06-27 21:33:17,387 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 44 selfloop transitions, 25 changer transitions 0/71 dead transitions. [2024-06-27 21:33:17,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 71 transitions, 571 flow [2024-06-27 21:33:17,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:33:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:33:17,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 21:33:17,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43842364532019706 [2024-06-27 21:33:17,389 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 315 flow. Second operand 7 states and 89 transitions. [2024-06-27 21:33:17,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 71 transitions, 571 flow [2024-06-27 21:33:17,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 71 transitions, 537 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 21:33:17,393 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 403 flow [2024-06-27 21:33:17,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=403, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-06-27 21:33:17,394 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 30 predicate places. [2024-06-27 21:33:17,395 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 403 flow [2024-06-27 21:33:17,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:17,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:17,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:17,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 21:33:17,395 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)] === [2024-06-27 21:33:17,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:17,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1610912821, now seen corresponding path program 2 times [2024-06-27 21:33:17,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:17,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816449855] [2024-06-27 21:33:17,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:17,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:17,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:17,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816449855] [2024-06-27 21:33:17,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816449855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:17,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:17,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:33:17,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821596137] [2024-06-27 21:33:17,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:17,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:33:17,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:17,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:33:17,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:33:17,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:17,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 403 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:17,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:17,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:17,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:17,908 INFO L124 PetriNetUnfolderBase]: 215/404 cut-off events. [2024-06-27 21:33:17,909 INFO L125 PetriNetUnfolderBase]: For 1853/1853 co-relation queries the response was YES. [2024-06-27 21:33:17,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1742 conditions, 404 events. 215/404 cut-off events. For 1853/1853 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1585 event pairs, 51 based on Foata normal form. 2/405 useless extension candidates. Maximal degree in co-relation 1712. Up to 381 conditions per place. [2024-06-27 21:33:17,911 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 53 selfloop transitions, 12 changer transitions 0/67 dead transitions. [2024-06-27 21:33:17,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 580 flow [2024-06-27 21:33:17,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:33:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:33:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-27 21:33:17,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3497536945812808 [2024-06-27 21:33:17,913 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 403 flow. Second operand 7 states and 71 transitions. [2024-06-27 21:33:17,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 580 flow [2024-06-27 21:33:17,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 67 transitions, 564 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 21:33:17,918 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 454 flow [2024-06-27 21:33:17,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=454, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-06-27 21:33:17,918 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 36 predicate places. [2024-06-27 21:33:17,918 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 454 flow [2024-06-27 21:33:17,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:17,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:17,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:17,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 21:33:17,919 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)] === [2024-06-27 21:33:17,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:17,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1632153749, now seen corresponding path program 3 times [2024-06-27 21:33:17,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:17,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508485168] [2024-06-27 21:33:17,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:17,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:18,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:18,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508485168] [2024-06-27 21:33:18,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508485168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:18,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:18,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:33:18,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142689560] [2024-06-27 21:33:18,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:18,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:33:18,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:18,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:33:18,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:33:18,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:18,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 454 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:18,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:18,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:18,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:18,435 INFO L124 PetriNetUnfolderBase]: 216/406 cut-off events. [2024-06-27 21:33:18,435 INFO L125 PetriNetUnfolderBase]: For 2119/2119 co-relation queries the response was YES. [2024-06-27 21:33:18,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1840 conditions, 406 events. 216/406 cut-off events. For 2119/2119 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1590 event pairs, 50 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 1807. Up to 370 conditions per place. [2024-06-27 21:33:18,438 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 53 selfloop transitions, 16 changer transitions 0/71 dead transitions. [2024-06-27 21:33:18,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 662 flow [2024-06-27 21:33:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:33:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:33:18,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2024-06-27 21:33:18,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3694581280788177 [2024-06-27 21:33:18,440 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 454 flow. Second operand 7 states and 75 transitions. [2024-06-27 21:33:18,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 662 flow [2024-06-27 21:33:18,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 644 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 21:33:18,446 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 495 flow [2024-06-27 21:33:18,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=495, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2024-06-27 21:33:18,447 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 40 predicate places. [2024-06-27 21:33:18,447 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 495 flow [2024-06-27 21:33:18,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:18,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:18,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:18,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 21:33:18,448 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)] === [2024-06-27 21:33:18,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:18,449 INFO L85 PathProgramCache]: Analyzing trace with hash 779752849, now seen corresponding path program 1 times [2024-06-27 21:33:18,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:18,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038900581] [2024-06-27 21:33:18,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:18,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:18,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:18,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:18,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:18,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038900581] [2024-06-27 21:33:18,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038900581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:18,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:18,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:33:18,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235259890] [2024-06-27 21:33:18,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:18,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:33:18,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:18,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:33:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:33:18,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:18,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 495 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) [2024-06-27 21:33:18,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:18,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:18,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:19,205 INFO L124 PetriNetUnfolderBase]: 213/401 cut-off events. [2024-06-27 21:33:19,212 INFO L125 PetriNetUnfolderBase]: For 2316/2316 co-relation queries the response was YES. [2024-06-27 21:33:19,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1843 conditions, 401 events. 213/401 cut-off events. For 2316/2316 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1561 event pairs, 49 based on Foata normal form. 2/402 useless extension candidates. Maximal degree in co-relation 1809. Up to 378 conditions per place. [2024-06-27 21:33:19,215 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 57 selfloop transitions, 10 changer transitions 0/69 dead transitions. [2024-06-27 21:33:19,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 69 transitions, 647 flow [2024-06-27 21:33:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:33:19,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:33:19,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-06-27 21:33:19,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3399014778325123 [2024-06-27 21:33:19,216 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 495 flow. Second operand 7 states and 69 transitions. [2024-06-27 21:33:19,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 69 transitions, 647 flow [2024-06-27 21:33:19,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 617 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 21:33:19,224 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 489 flow [2024-06-27 21:33:19,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=489, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2024-06-27 21:33:19,225 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 43 predicate places. [2024-06-27 21:33:19,225 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 489 flow [2024-06-27 21:33:19,225 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) [2024-06-27 21:33:19,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:19,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:19,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 21:33:19,226 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)] === [2024-06-27 21:33:19,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:19,226 INFO L85 PathProgramCache]: Analyzing trace with hash 795136220, now seen corresponding path program 1 times [2024-06-27 21:33:19,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:19,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807540593] [2024-06-27 21:33:19,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:19,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:19,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:19,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:19,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807540593] [2024-06-27 21:33:19,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807540593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:19,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:19,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:33:19,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614387898] [2024-06-27 21:33:19,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:19,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:33:19,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:19,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:33:19,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:33:19,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:19,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 489 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) [2024-06-27 21:33:19,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:19,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:19,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:19,904 INFO L124 PetriNetUnfolderBase]: 209/394 cut-off events. [2024-06-27 21:33:19,904 INFO L125 PetriNetUnfolderBase]: For 2436/2436 co-relation queries the response was YES. [2024-06-27 21:33:19,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1803 conditions, 394 events. 209/394 cut-off events. For 2436/2436 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1527 event pairs, 49 based on Foata normal form. 1/394 useless extension candidates. Maximal degree in co-relation 1768. Up to 334 conditions per place. [2024-06-27 21:33:19,907 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 57 selfloop transitions, 18 changer transitions 0/77 dead transitions. [2024-06-27 21:33:19,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 689 flow [2024-06-27 21:33:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:19,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 21:33:19,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-27 21:33:19,909 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 489 flow. Second operand 8 states and 88 transitions. [2024-06-27 21:33:19,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 689 flow [2024-06-27 21:33:19,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 661 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 21:33:19,914 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 527 flow [2024-06-27 21:33:19,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=527, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-06-27 21:33:19,915 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 46 predicate places. [2024-06-27 21:33:19,915 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 527 flow [2024-06-27 21:33:19,915 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) [2024-06-27 21:33:19,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:19,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:19,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 21:33:19,916 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)] === [2024-06-27 21:33:19,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:19,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1835292457, now seen corresponding path program 1 times [2024-06-27 21:33:19,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:19,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828307570] [2024-06-27 21:33:19,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:19,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:20,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828307570] [2024-06-27 21:33:20,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828307570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:20,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:20,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:33:20,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525771998] [2024-06-27 21:33:20,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:20,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:33:20,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:20,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:33:20,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:33:20,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:20,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 527 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) [2024-06-27 21:33:20,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:20,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:20,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:20,438 INFO L124 PetriNetUnfolderBase]: 225/420 cut-off events. [2024-06-27 21:33:20,438 INFO L125 PetriNetUnfolderBase]: For 3052/3052 co-relation queries the response was YES. [2024-06-27 21:33:20,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1976 conditions, 420 events. 225/420 cut-off events. For 3052/3052 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1647 event pairs, 38 based on Foata normal form. 2/421 useless extension candidates. Maximal degree in co-relation 1940. Up to 244 conditions per place. [2024-06-27 21:33:20,441 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 46 selfloop transitions, 33 changer transitions 1/82 dead transitions. [2024-06-27 21:33:20,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 82 transitions, 809 flow [2024-06-27 21:33:20,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:33:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:33:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-27 21:33:20,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236453201970443 [2024-06-27 21:33:20,443 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 527 flow. Second operand 7 states and 86 transitions. [2024-06-27 21:33:20,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 82 transitions, 809 flow [2024-06-27 21:33:20,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 773 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 21:33:20,448 INFO L231 Difference]: Finished difference. Result has 77 places, 66 transitions, 601 flow [2024-06-27 21:33:20,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=601, PETRI_PLACES=77, PETRI_TRANSITIONS=66} [2024-06-27 21:33:20,449 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 49 predicate places. [2024-06-27 21:33:20,450 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 66 transitions, 601 flow [2024-06-27 21:33:20,450 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) [2024-06-27 21:33:20,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:20,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:20,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 21:33:20,450 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)] === [2024-06-27 21:33:20,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:20,451 INFO L85 PathProgramCache]: Analyzing trace with hash 798945655, now seen corresponding path program 2 times [2024-06-27 21:33:20,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:20,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068977193] [2024-06-27 21:33:20,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:20,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:20,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:20,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:20,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068977193] [2024-06-27 21:33:20,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068977193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:20,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:20,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:33:20,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061384484] [2024-06-27 21:33:20,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:20,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:33:20,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:33:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:33:20,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:20,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 66 transitions, 601 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) [2024-06-27 21:33:20,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:20,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:20,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:21,024 INFO L124 PetriNetUnfolderBase]: 213/404 cut-off events. [2024-06-27 21:33:21,024 INFO L125 PetriNetUnfolderBase]: For 3446/3446 co-relation queries the response was YES. [2024-06-27 21:33:21,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 404 events. 213/404 cut-off events. For 3446/3446 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1583 event pairs, 38 based on Foata normal form. 4/407 useless extension candidates. Maximal degree in co-relation 1955. Up to 240 conditions per place. [2024-06-27 21:33:21,027 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 46 selfloop transitions, 35 changer transitions 1/84 dead transitions. [2024-06-27 21:33:21,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 84 transitions, 873 flow [2024-06-27 21:33:21,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:33:21,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:33:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-27 21:33:21,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2024-06-27 21:33:21,028 INFO L175 Difference]: Start difference. First operand has 77 places, 66 transitions, 601 flow. Second operand 7 states and 91 transitions. [2024-06-27 21:33:21,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 84 transitions, 873 flow [2024-06-27 21:33:21,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 842 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 21:33:21,035 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 639 flow [2024-06-27 21:33:21,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=639, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2024-06-27 21:33:21,035 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 53 predicate places. [2024-06-27 21:33:21,035 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 639 flow [2024-06-27 21:33:21,036 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) [2024-06-27 21:33:21,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:21,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:21,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 21:33:21,036 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)] === [2024-06-27 21:33:21,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1601309669, now seen corresponding path program 3 times [2024-06-27 21:33:21,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:21,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884674197] [2024-06-27 21:33:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:21,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:21,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:21,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884674197] [2024-06-27 21:33:21,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884674197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:21,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:21,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:33:21,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257848138] [2024-06-27 21:33:21,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:21,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:33:21,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:21,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:33:21,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:33:21,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:21,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 639 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) [2024-06-27 21:33:21,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:21,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:21,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:21,636 INFO L124 PetriNetUnfolderBase]: 208/397 cut-off events. [2024-06-27 21:33:21,636 INFO L125 PetriNetUnfolderBase]: For 3603/3603 co-relation queries the response was YES. [2024-06-27 21:33:21,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2016 conditions, 397 events. 208/397 cut-off events. For 3603/3603 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1556 event pairs, 40 based on Foata normal form. 2/398 useless extension candidates. Maximal degree in co-relation 1977. Up to 366 conditions per place. [2024-06-27 21:33:21,639 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 61 selfloop transitions, 12 changer transitions 1/76 dead transitions. [2024-06-27 21:33:21,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 76 transitions, 831 flow [2024-06-27 21:33:21,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:33:21,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:33:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 73 transitions. [2024-06-27 21:33:21,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35960591133004927 [2024-06-27 21:33:21,641 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 639 flow. Second operand 7 states and 73 transitions. [2024-06-27 21:33:21,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 76 transitions, 831 flow [2024-06-27 21:33:21,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 76 transitions, 745 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 21:33:21,648 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 594 flow [2024-06-27 21:33:21,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=594, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2024-06-27 21:33:21,649 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 54 predicate places. [2024-06-27 21:33:21,649 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 594 flow [2024-06-27 21:33:21,649 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) [2024-06-27 21:33:21,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:21,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:21,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 21:33:21,650 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)] === [2024-06-27 21:33:21,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:21,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1601042542, now seen corresponding path program 1 times [2024-06-27 21:33:21,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:21,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329561252] [2024-06-27 21:33:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:21,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:22,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:22,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:22,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329561252] [2024-06-27 21:33:22,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329561252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:22,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:22,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:33:22,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462166602] [2024-06-27 21:33:22,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:22,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 21:33:22,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:22,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 21:33:22,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 21:33:22,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:22,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 594 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:22,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:22,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:22,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:22,393 INFO L124 PetriNetUnfolderBase]: 195/377 cut-off events. [2024-06-27 21:33:22,394 INFO L125 PetriNetUnfolderBase]: For 3344/3344 co-relation queries the response was YES. [2024-06-27 21:33:22,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1866 conditions, 377 events. 195/377 cut-off events. For 3344/3344 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1480 event pairs, 37 based on Foata normal form. 1/377 useless extension candidates. Maximal degree in co-relation 1826. Up to 351 conditions per place. [2024-06-27 21:33:22,397 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 59 selfloop transitions, 13 changer transitions 0/74 dead transitions. [2024-06-27 21:33:22,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 74 transitions, 758 flow [2024-06-27 21:33:22,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:33:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:33:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 71 transitions. [2024-06-27 21:33:22,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3497536945812808 [2024-06-27 21:33:22,399 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 594 flow. Second operand 7 states and 71 transitions. [2024-06-27 21:33:22,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 74 transitions, 758 flow [2024-06-27 21:33:22,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 74 transitions, 732 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 21:33:22,408 INFO L231 Difference]: Finished difference. Result has 84 places, 66 transitions, 602 flow [2024-06-27 21:33:22,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=602, PETRI_PLACES=84, PETRI_TRANSITIONS=66} [2024-06-27 21:33:22,409 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 56 predicate places. [2024-06-27 21:33:22,409 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 66 transitions, 602 flow [2024-06-27 21:33:22,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:22,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:22,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:22,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 21:33:22,416 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)] === [2024-06-27 21:33:22,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:22,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1175077890, now seen corresponding path program 1 times [2024-06-27 21:33:22,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:22,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947186869] [2024-06-27 21:33:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:22,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:22,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:22,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947186869] [2024-06-27 21:33:22,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947186869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:22,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:22,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:33:22,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788263698] [2024-06-27 21:33:22,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:22,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 21:33:22,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:22,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 21:33:22,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 21:33:22,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:22,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 66 transitions, 602 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) [2024-06-27 21:33:22,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:22,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:22,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:23,143 INFO L124 PetriNetUnfolderBase]: 228/444 cut-off events. [2024-06-27 21:33:23,143 INFO L125 PetriNetUnfolderBase]: For 5605/5605 co-relation queries the response was YES. [2024-06-27 21:33:23,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 444 events. 228/444 cut-off events. For 5605/5605 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1852 event pairs, 36 based on Foata normal form. 2/445 useless extension candidates. Maximal degree in co-relation 2217. Up to 153 conditions per place. [2024-06-27 21:33:23,147 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 59 selfloop transitions, 31 changer transitions 0/92 dead transitions. [2024-06-27 21:33:23,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 92 transitions, 970 flow [2024-06-27 21:33:23,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:23,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 21:33:23,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267241379310345 [2024-06-27 21:33:23,148 INFO L175 Difference]: Start difference. First operand has 84 places, 66 transitions, 602 flow. Second operand 8 states and 99 transitions. [2024-06-27 21:33:23,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 92 transitions, 970 flow [2024-06-27 21:33:23,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 92 transitions, 922 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 21:33:23,159 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 636 flow [2024-06-27 21:33:23,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=636, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2024-06-27 21:33:23,160 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 57 predicate places. [2024-06-27 21:33:23,160 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 636 flow [2024-06-27 21:33:23,160 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) [2024-06-27 21:33:23,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:23,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:23,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 21:33:23,160 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)] === [2024-06-27 21:33:23,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:23,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1177756290, now seen corresponding path program 2 times [2024-06-27 21:33:23,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:23,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718477700] [2024-06-27 21:33:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:23,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:23,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:23,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718477700] [2024-06-27 21:33:23,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718477700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:23,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:23,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:33:23,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418041252] [2024-06-27 21:33:23,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:23,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 21:33:23,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:23,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 21:33:23,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 21:33:23,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:23,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 636 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) [2024-06-27 21:33:23,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:23,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:23,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:23,902 INFO L124 PetriNetUnfolderBase]: 225/439 cut-off events. [2024-06-27 21:33:23,902 INFO L125 PetriNetUnfolderBase]: For 5394/5394 co-relation queries the response was YES. [2024-06-27 21:33:23,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 439 events. 225/439 cut-off events. For 5394/5394 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1844 event pairs, 59 based on Foata normal form. 2/440 useless extension candidates. Maximal degree in co-relation 2211. Up to 373 conditions per place. [2024-06-27 21:33:23,905 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 62 selfloop transitions, 19 changer transitions 0/83 dead transitions. [2024-06-27 21:33:23,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 83 transitions, 836 flow [2024-06-27 21:33:23,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 21:33:23,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 21:33:23,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 21:33:23,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-27 21:33:23,906 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 636 flow. Second operand 9 states and 96 transitions. [2024-06-27 21:33:23,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 83 transitions, 836 flow [2024-06-27 21:33:23,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 83 transitions, 775 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 21:33:23,916 INFO L231 Difference]: Finished difference. Result has 89 places, 67 transitions, 617 flow [2024-06-27 21:33:23,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=617, PETRI_PLACES=89, PETRI_TRANSITIONS=67} [2024-06-27 21:33:23,916 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 61 predicate places. [2024-06-27 21:33:23,916 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 67 transitions, 617 flow [2024-06-27 21:33:23,916 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) [2024-06-27 21:33:23,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:23,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:23,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 21:33:23,918 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)] === [2024-06-27 21:33:23,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:23,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1174955006, now seen corresponding path program 1 times [2024-06-27 21:33:23,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:23,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728321137] [2024-06-27 21:33:23,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:23,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:24,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:24,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:24,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728321137] [2024-06-27 21:33:24,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728321137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:24,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:24,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:33:24,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546477936] [2024-06-27 21:33:24,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:24,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 21:33:24,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:24,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 21:33:24,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 21:33:24,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:24,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 67 transitions, 617 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) [2024-06-27 21:33:24,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:24,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:24,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:24,817 INFO L124 PetriNetUnfolderBase]: 221/433 cut-off events. [2024-06-27 21:33:24,818 INFO L125 PetriNetUnfolderBase]: For 5495/5495 co-relation queries the response was YES. [2024-06-27 21:33:24,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2181 conditions, 433 events. 221/433 cut-off events. For 5495/5495 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1822 event pairs, 47 based on Foata normal form. 2/434 useless extension candidates. Maximal degree in co-relation 2140. Up to 286 conditions per place. [2024-06-27 21:33:24,823 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 47 selfloop transitions, 33 changer transitions 0/82 dead transitions. [2024-06-27 21:33:24,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 82 transitions, 855 flow [2024-06-27 21:33:24,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:24,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 21:33:24,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40948275862068967 [2024-06-27 21:33:24,825 INFO L175 Difference]: Start difference. First operand has 89 places, 67 transitions, 617 flow. Second operand 8 states and 95 transitions. [2024-06-27 21:33:24,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 82 transitions, 855 flow [2024-06-27 21:33:24,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 82 transitions, 802 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 21:33:24,834 INFO L231 Difference]: Finished difference. Result has 89 places, 67 transitions, 635 flow [2024-06-27 21:33:24,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=635, PETRI_PLACES=89, PETRI_TRANSITIONS=67} [2024-06-27 21:33:24,835 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 61 predicate places. [2024-06-27 21:33:24,835 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 67 transitions, 635 flow [2024-06-27 21:33:24,835 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) [2024-06-27 21:33:24,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:24,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:24,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 21:33:24,835 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)] === [2024-06-27 21:33:24,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:24,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1059483912, now seen corresponding path program 1 times [2024-06-27 21:33:24,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:24,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768573670] [2024-06-27 21:33:24,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:24,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:25,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:25,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768573670] [2024-06-27 21:33:25,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768573670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:25,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:25,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 21:33:25,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530250479] [2024-06-27 21:33:25,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:25,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 21:33:25,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:25,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 21:33:25,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 21:33:25,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:25,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 67 transitions, 635 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:25,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:25,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:25,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:25,774 INFO L124 PetriNetUnfolderBase]: 216/426 cut-off events. [2024-06-27 21:33:25,774 INFO L125 PetriNetUnfolderBase]: For 6545/6545 co-relation queries the response was YES. [2024-06-27 21:33:25,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2000 conditions, 426 events. 216/426 cut-off events. For 6545/6545 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1782 event pairs, 40 based on Foata normal form. 14/439 useless extension candidates. Maximal degree in co-relation 1958. Up to 225 conditions per place. [2024-06-27 21:33:25,777 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 48 selfloop transitions, 32 changer transitions 7/89 dead transitions. [2024-06-27 21:33:25,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 89 transitions, 919 flow [2024-06-27 21:33:25,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:25,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-06-27 21:33:25,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353448275862069 [2024-06-27 21:33:25,778 INFO L175 Difference]: Start difference. First operand has 89 places, 67 transitions, 635 flow. Second operand 8 states and 101 transitions. [2024-06-27 21:33:25,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 89 transitions, 919 flow [2024-06-27 21:33:25,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 89 transitions, 830 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 21:33:25,785 INFO L231 Difference]: Finished difference. Result has 89 places, 66 transitions, 607 flow [2024-06-27 21:33:25,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=607, PETRI_PLACES=89, PETRI_TRANSITIONS=66} [2024-06-27 21:33:25,786 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 61 predicate places. [2024-06-27 21:33:25,786 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 66 transitions, 607 flow [2024-06-27 21:33:25,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:25,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:25,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:25,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 21:33:25,787 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)] === [2024-06-27 21:33:25,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:25,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1907586100, now seen corresponding path program 2 times [2024-06-27 21:33:25,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:25,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425564785] [2024-06-27 21:33:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:25,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:26,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:26,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425564785] [2024-06-27 21:33:26,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425564785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:26,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:26,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 21:33:26,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463037340] [2024-06-27 21:33:26,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:26,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 21:33:26,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:26,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 21:33:26,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 21:33:26,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:26,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 66 transitions, 607 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:26,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:26,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:26,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:26,601 INFO L124 PetriNetUnfolderBase]: 196/386 cut-off events. [2024-06-27 21:33:26,601 INFO L125 PetriNetUnfolderBase]: For 4416/4416 co-relation queries the response was YES. [2024-06-27 21:33:26,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1894 conditions, 386 events. 196/386 cut-off events. For 4416/4416 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1526 event pairs, 35 based on Foata normal form. 2/387 useless extension candidates. Maximal degree in co-relation 1851. Up to 355 conditions per place. [2024-06-27 21:33:26,604 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 64 selfloop transitions, 11 changer transitions 0/77 dead transitions. [2024-06-27 21:33:26,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 77 transitions, 787 flow [2024-06-27 21:33:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:26,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 77 transitions. [2024-06-27 21:33:26,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33189655172413796 [2024-06-27 21:33:26,606 INFO L175 Difference]: Start difference. First operand has 89 places, 66 transitions, 607 flow. Second operand 8 states and 77 transitions. [2024-06-27 21:33:26,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 77 transitions, 787 flow [2024-06-27 21:33:26,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 77 transitions, 702 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 21:33:26,615 INFO L231 Difference]: Finished difference. Result has 90 places, 67 transitions, 558 flow [2024-06-27 21:33:26,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=558, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2024-06-27 21:33:26,616 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 62 predicate places. [2024-06-27 21:33:26,616 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 558 flow [2024-06-27 21:33:26,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:26,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:26,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:26,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 21:33:26,617 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)] === [2024-06-27 21:33:26,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:26,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1896357624, now seen corresponding path program 3 times [2024-06-27 21:33:26,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:26,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644981947] [2024-06-27 21:33:26,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:26,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:27,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:27,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:27,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644981947] [2024-06-27 21:33:27,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644981947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:27,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:27,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 21:33:27,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872486265] [2024-06-27 21:33:27,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:27,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 21:33:27,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:27,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 21:33:27,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 21:33:27,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:27,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 558 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:27,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:27,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:27,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:27,444 INFO L124 PetriNetUnfolderBase]: 200/394 cut-off events. [2024-06-27 21:33:27,444 INFO L125 PetriNetUnfolderBase]: For 4681/4681 co-relation queries the response was YES. [2024-06-27 21:33:27,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 394 events. 200/394 cut-off events. For 4681/4681 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1603 event pairs, 35 based on Foata normal form. 2/395 useless extension candidates. Maximal degree in co-relation 1825. Up to 360 conditions per place. [2024-06-27 21:33:27,447 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 62 selfloop transitions, 14 changer transitions 0/78 dead transitions. [2024-06-27 21:33:27,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 78 transitions, 744 flow [2024-06-27 21:33:27,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:27,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-27 21:33:27,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34051724137931033 [2024-06-27 21:33:27,449 INFO L175 Difference]: Start difference. First operand has 90 places, 67 transitions, 558 flow. Second operand 8 states and 79 transitions. [2024-06-27 21:33:27,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 78 transitions, 744 flow [2024-06-27 21:33:27,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 78 transitions, 718 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 21:33:27,458 INFO L231 Difference]: Finished difference. Result has 92 places, 68 transitions, 577 flow [2024-06-27 21:33:27,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=577, PETRI_PLACES=92, PETRI_TRANSITIONS=68} [2024-06-27 21:33:27,458 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 64 predicate places. [2024-06-27 21:33:27,459 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 68 transitions, 577 flow [2024-06-27 21:33:27,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:27,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:27,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:27,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 21:33:27,459 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)] === [2024-06-27 21:33:27,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:27,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1896357376, now seen corresponding path program 1 times [2024-06-27 21:33:27,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:27,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312082978] [2024-06-27 21:33:27,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:27,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:27,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:27,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:27,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312082978] [2024-06-27 21:33:27,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312082978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:27,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:27,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:33:27,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714630138] [2024-06-27 21:33:27,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:27,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 21:33:27,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:27,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 21:33:27,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 21:33:28,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:28,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 68 transitions, 577 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) [2024-06-27 21:33:28,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:28,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:28,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:28,210 INFO L124 PetriNetUnfolderBase]: 195/379 cut-off events. [2024-06-27 21:33:28,211 INFO L125 PetriNetUnfolderBase]: For 4546/4546 co-relation queries the response was YES. [2024-06-27 21:33:28,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 379 events. 195/379 cut-off events. For 4546/4546 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1513 event pairs, 34 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 1770. Up to 342 conditions per place. [2024-06-27 21:33:28,213 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 57 selfloop transitions, 16 changer transitions 3/78 dead transitions. [2024-06-27 21:33:28,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 78 transitions, 763 flow [2024-06-27 21:33:28,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:28,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 79 transitions. [2024-06-27 21:33:28,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34051724137931033 [2024-06-27 21:33:28,217 INFO L175 Difference]: Start difference. First operand has 92 places, 68 transitions, 577 flow. Second operand 8 states and 79 transitions. [2024-06-27 21:33:28,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 78 transitions, 763 flow [2024-06-27 21:33:28,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 78 transitions, 728 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 21:33:28,227 INFO L231 Difference]: Finished difference. Result has 95 places, 67 transitions, 562 flow [2024-06-27 21:33:28,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=562, PETRI_PLACES=95, PETRI_TRANSITIONS=67} [2024-06-27 21:33:28,227 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 67 predicate places. [2024-06-27 21:33:28,227 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 67 transitions, 562 flow [2024-06-27 21:33:28,227 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) [2024-06-27 21:33:28,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:28,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:28,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 21:33:28,228 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)] === [2024-06-27 21:33:28,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:28,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1671114070, now seen corresponding path program 4 times [2024-06-27 21:33:28,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:28,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338302253] [2024-06-27 21:33:28,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:28,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:28,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:28,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338302253] [2024-06-27 21:33:28,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338302253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:28,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:28,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 21:33:28,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458729587] [2024-06-27 21:33:28,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:28,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 21:33:28,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:28,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 21:33:28,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 21:33:28,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:28,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 67 transitions, 562 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:28,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:28,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:28,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:28,907 INFO L124 PetriNetUnfolderBase]: 175/339 cut-off events. [2024-06-27 21:33:28,908 INFO L125 PetriNetUnfolderBase]: For 4536/4536 co-relation queries the response was YES. [2024-06-27 21:33:28,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 339 events. 175/339 cut-off events. For 4536/4536 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1303 event pairs, 28 based on Foata normal form. 2/340 useless extension candidates. Maximal degree in co-relation 1601. Up to 298 conditions per place. [2024-06-27 21:33:28,910 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 57 selfloop transitions, 18 changer transitions 0/77 dead transitions. [2024-06-27 21:33:28,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 77 transitions, 738 flow [2024-06-27 21:33:28,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:28,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:28,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-27 21:33:28,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35344827586206895 [2024-06-27 21:33:28,923 INFO L175 Difference]: Start difference. First operand has 95 places, 67 transitions, 562 flow. Second operand 8 states and 82 transitions. [2024-06-27 21:33:28,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 77 transitions, 738 flow [2024-06-27 21:33:28,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 77 transitions, 651 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 21:33:28,932 INFO L231 Difference]: Finished difference. Result has 93 places, 67 transitions, 515 flow [2024-06-27 21:33:28,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=515, PETRI_PLACES=93, PETRI_TRANSITIONS=67} [2024-06-27 21:33:28,933 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 65 predicate places. [2024-06-27 21:33:28,933 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 67 transitions, 515 flow [2024-06-27 21:33:28,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:28,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:28,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:28,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 21:33:28,934 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)] === [2024-06-27 21:33:28,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:28,934 INFO L85 PathProgramCache]: Analyzing trace with hash -378341826, now seen corresponding path program 1 times [2024-06-27 21:33:28,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:28,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034017578] [2024-06-27 21:33:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:28,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:29,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:29,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:29,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034017578] [2024-06-27 21:33:29,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034017578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:29,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:29,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:33:29,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417793793] [2024-06-27 21:33:29,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:29,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 21:33:29,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:29,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 21:33:29,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 21:33:29,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:29,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 67 transitions, 515 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) [2024-06-27 21:33:29,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:29,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:29,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:29,508 INFO L124 PetriNetUnfolderBase]: 209/413 cut-off events. [2024-06-27 21:33:29,508 INFO L125 PetriNetUnfolderBase]: For 8551/8551 co-relation queries the response was YES. [2024-06-27 21:33:29,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 413 events. 209/413 cut-off events. For 8551/8551 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1699 event pairs, 49 based on Foata normal form. 8/420 useless extension candidates. Maximal degree in co-relation 1888. Up to 172 conditions per place. [2024-06-27 21:33:29,511 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 52 selfloop transitions, 22 changer transitions 12/88 dead transitions. [2024-06-27 21:33:29,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 88 transitions, 799 flow [2024-06-27 21:33:29,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:29,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:29,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 21:33:29,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4051724137931034 [2024-06-27 21:33:29,512 INFO L175 Difference]: Start difference. First operand has 93 places, 67 transitions, 515 flow. Second operand 8 states and 94 transitions. [2024-06-27 21:33:29,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 88 transitions, 799 flow [2024-06-27 21:33:29,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 88 transitions, 736 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 21:33:29,523 INFO L231 Difference]: Finished difference. Result has 94 places, 65 transitions, 488 flow [2024-06-27 21:33:29,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=488, PETRI_PLACES=94, PETRI_TRANSITIONS=65} [2024-06-27 21:33:29,524 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 66 predicate places. [2024-06-27 21:33:29,524 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 65 transitions, 488 flow [2024-06-27 21:33:29,524 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) [2024-06-27 21:33:29,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:29,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:29,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 21:33:29,525 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)] === [2024-06-27 21:33:29,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:29,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1154607622, now seen corresponding path program 2 times [2024-06-27 21:33:29,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:29,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050329194] [2024-06-27 21:33:29,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:29,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:29,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:29,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050329194] [2024-06-27 21:33:29,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050329194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:29,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:29,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:33:29,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920844960] [2024-06-27 21:33:29,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:29,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 21:33:29,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:29,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 21:33:29,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 21:33:29,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:29,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 65 transitions, 488 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) [2024-06-27 21:33:29,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:29,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:29,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:30,131 INFO L124 PetriNetUnfolderBase]: 230/460 cut-off events. [2024-06-27 21:33:30,131 INFO L125 PetriNetUnfolderBase]: For 12351/12351 co-relation queries the response was YES. [2024-06-27 21:33:30,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 460 events. 230/460 cut-off events. For 12351/12351 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1990 event pairs, 60 based on Foata normal form. 8/467 useless extension candidates. Maximal degree in co-relation 2226. Up to 205 conditions per place. [2024-06-27 21:33:30,134 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 47 selfloop transitions, 26 changer transitions 12/87 dead transitions. [2024-06-27 21:33:30,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 87 transitions, 778 flow [2024-06-27 21:33:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 21:33:30,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43103448275862066 [2024-06-27 21:33:30,135 INFO L175 Difference]: Start difference. First operand has 94 places, 65 transitions, 488 flow. Second operand 8 states and 100 transitions. [2024-06-27 21:33:30,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 87 transitions, 778 flow [2024-06-27 21:33:30,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 740 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 21:33:30,146 INFO L231 Difference]: Finished difference. Result has 93 places, 61 transitions, 482 flow [2024-06-27 21:33:30,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=482, PETRI_PLACES=93, PETRI_TRANSITIONS=61} [2024-06-27 21:33:30,146 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 65 predicate places. [2024-06-27 21:33:30,146 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 61 transitions, 482 flow [2024-06-27 21:33:30,146 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) [2024-06-27 21:33:30,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:30,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:30,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 21:33:30,146 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)] === [2024-06-27 21:33:30,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:30,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2063866324, now seen corresponding path program 3 times [2024-06-27 21:33:30,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:30,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123456729] [2024-06-27 21:33:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:30,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:30,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:30,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:30,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123456729] [2024-06-27 21:33:30,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123456729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:30,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:30,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 21:33:30,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91272241] [2024-06-27 21:33:30,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:30,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 21:33:30,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:30,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 21:33:30,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 21:33:30,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:30,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 61 transitions, 482 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) [2024-06-27 21:33:30,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:30,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:30,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:31,003 INFO L124 PetriNetUnfolderBase]: 196/394 cut-off events. [2024-06-27 21:33:31,003 INFO L125 PetriNetUnfolderBase]: For 9054/9054 co-relation queries the response was YES. [2024-06-27 21:33:31,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1874 conditions, 394 events. 196/394 cut-off events. For 9054/9054 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1619 event pairs, 49 based on Foata normal form. 10/403 useless extension candidates. Maximal degree in co-relation 1829. Up to 205 conditions per place. [2024-06-27 21:33:31,006 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 39 selfloop transitions, 24 changer transitions 15/80 dead transitions. [2024-06-27 21:33:31,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 80 transitions, 698 flow [2024-06-27 21:33:31,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 21:33:31,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 21:33:31,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 21:33:31,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946360153256705 [2024-06-27 21:33:31,008 INFO L175 Difference]: Start difference. First operand has 93 places, 61 transitions, 482 flow. Second operand 9 states and 103 transitions. [2024-06-27 21:33:31,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 80 transitions, 698 flow [2024-06-27 21:33:31,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 80 transitions, 640 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 21:33:31,015 INFO L231 Difference]: Finished difference. Result has 90 places, 55 transitions, 439 flow [2024-06-27 21:33:31,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=439, PETRI_PLACES=90, PETRI_TRANSITIONS=55} [2024-06-27 21:33:31,015 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 62 predicate places. [2024-06-27 21:33:31,015 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 55 transitions, 439 flow [2024-06-27 21:33:31,016 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) [2024-06-27 21:33:31,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:31,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:31,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 21:33:31,016 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)] === [2024-06-27 21:33:31,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:31,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1510012076, now seen corresponding path program 4 times [2024-06-27 21:33:31,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:31,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874451768] [2024-06-27 21:33:31,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:31,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:31,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:31,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874451768] [2024-06-27 21:33:31,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874451768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:31,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:31,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:33:31,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836687712] [2024-06-27 21:33:31,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:31,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 21:33:31,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:31,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 21:33:31,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 21:33:31,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:31,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 55 transitions, 439 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) [2024-06-27 21:33:31,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:31,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:31,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:31,629 INFO L124 PetriNetUnfolderBase]: 179/363 cut-off events. [2024-06-27 21:33:31,629 INFO L125 PetriNetUnfolderBase]: For 9003/9003 co-relation queries the response was YES. [2024-06-27 21:33:31,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1835 conditions, 363 events. 179/363 cut-off events. For 9003/9003 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1484 event pairs, 55 based on Foata normal form. 8/370 useless extension candidates. Maximal degree in co-relation 1792. Up to 143 conditions per place. [2024-06-27 21:33:31,632 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 40 selfloop transitions, 24 changer transitions 7/73 dead transitions. [2024-06-27 21:33:31,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 73 transitions, 681 flow [2024-06-27 21:33:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 21:33:31,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3879310344827586 [2024-06-27 21:33:31,633 INFO L175 Difference]: Start difference. First operand has 90 places, 55 transitions, 439 flow. Second operand 8 states and 90 transitions. [2024-06-27 21:33:31,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 73 transitions, 681 flow [2024-06-27 21:33:31,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 73 transitions, 599 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 21:33:31,642 INFO L231 Difference]: Finished difference. Result has 85 places, 53 transitions, 399 flow [2024-06-27 21:33:31,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=399, PETRI_PLACES=85, PETRI_TRANSITIONS=53} [2024-06-27 21:33:31,642 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 57 predicate places. [2024-06-27 21:33:31,642 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 53 transitions, 399 flow [2024-06-27 21:33:31,643 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) [2024-06-27 21:33:31,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:31,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:31,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 21:33:31,643 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)] === [2024-06-27 21:33:31,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:31,644 INFO L85 PathProgramCache]: Analyzing trace with hash -762192212, now seen corresponding path program 5 times [2024-06-27 21:33:31,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:31,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868064372] [2024-06-27 21:33:31,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:31,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:32,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:32,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868064372] [2024-06-27 21:33:32,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868064372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:32,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:32,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:33:32,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994085533] [2024-06-27 21:33:32,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:32,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 21:33:32,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:32,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 21:33:32,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 21:33:32,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:32,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 53 transitions, 399 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) [2024-06-27 21:33:32,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:32,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:32,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:32,254 INFO L124 PetriNetUnfolderBase]: 167/343 cut-off events. [2024-06-27 21:33:32,254 INFO L125 PetriNetUnfolderBase]: For 8188/8188 co-relation queries the response was YES. [2024-06-27 21:33:32,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 343 events. 167/343 cut-off events. For 8188/8188 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1373 event pairs, 57 based on Foata normal form. 12/354 useless extension candidates. Maximal degree in co-relation 1603. Up to 199 conditions per place. [2024-06-27 21:33:32,256 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 33 selfloop transitions, 24 changer transitions 8/67 dead transitions. [2024-06-27 21:33:32,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 67 transitions, 573 flow [2024-06-27 21:33:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-27 21:33:32,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706896551724138 [2024-06-27 21:33:32,257 INFO L175 Difference]: Start difference. First operand has 85 places, 53 transitions, 399 flow. Second operand 8 states and 86 transitions. [2024-06-27 21:33:32,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 67 transitions, 573 flow [2024-06-27 21:33:32,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 67 transitions, 527 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 21:33:32,263 INFO L231 Difference]: Finished difference. Result has 84 places, 49 transitions, 378 flow [2024-06-27 21:33:32,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=378, PETRI_PLACES=84, PETRI_TRANSITIONS=49} [2024-06-27 21:33:32,264 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 56 predicate places. [2024-06-27 21:33:32,264 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 49 transitions, 378 flow [2024-06-27 21:33:32,264 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) [2024-06-27 21:33:32,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:32,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:32,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 21:33:32,264 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)] === [2024-06-27 21:33:32,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:32,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1006786540, now seen corresponding path program 1 times [2024-06-27 21:33:32,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:32,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134606794] [2024-06-27 21:33:32,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:32,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:32,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:32,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134606794] [2024-06-27 21:33:32,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134606794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:32,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:32,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:33:32,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803157333] [2024-06-27 21:33:32,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:32,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 21:33:32,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:32,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 21:33:32,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 21:33:32,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:32,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 49 transitions, 378 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) [2024-06-27 21:33:32,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:32,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:32,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:32,894 INFO L124 PetriNetUnfolderBase]: 146/300 cut-off events. [2024-06-27 21:33:32,894 INFO L125 PetriNetUnfolderBase]: For 5347/5347 co-relation queries the response was YES. [2024-06-27 21:33:32,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 300 events. 146/300 cut-off events. For 5347/5347 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1116 event pairs, 55 based on Foata normal form. 2/301 useless extension candidates. Maximal degree in co-relation 1483. Up to 207 conditions per place. [2024-06-27 21:33:32,896 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 36 selfloop transitions, 22 changer transitions 0/60 dead transitions. [2024-06-27 21:33:32,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 60 transitions, 528 flow [2024-06-27 21:33:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:32,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:32,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-27 21:33:32,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-27 21:33:32,898 INFO L175 Difference]: Start difference. First operand has 84 places, 49 transitions, 378 flow. Second operand 8 states and 80 transitions. [2024-06-27 21:33:32,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 60 transitions, 528 flow [2024-06-27 21:33:32,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 60 transitions, 456 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 21:33:32,904 INFO L231 Difference]: Finished difference. Result has 83 places, 50 transitions, 364 flow [2024-06-27 21:33:32,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=364, PETRI_PLACES=83, PETRI_TRANSITIONS=50} [2024-06-27 21:33:32,904 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 55 predicate places. [2024-06-27 21:33:32,904 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 50 transitions, 364 flow [2024-06-27 21:33:32,905 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) [2024-06-27 21:33:32,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:32,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:32,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 21:33:32,905 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)] === [2024-06-27 21:33:32,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:32,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1143198720, now seen corresponding path program 2 times [2024-06-27 21:33:32,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:32,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433638452] [2024-06-27 21:33:32,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:32,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:33,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:33,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:33,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433638452] [2024-06-27 21:33:33,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433638452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:33,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:33,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:33:33,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727280004] [2024-06-27 21:33:33,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:33,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 21:33:33,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:33,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 21:33:33,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 21:33:33,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:33,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 50 transitions, 364 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) [2024-06-27 21:33:33,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:33,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:33,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:33,541 INFO L124 PetriNetUnfolderBase]: 150/308 cut-off events. [2024-06-27 21:33:33,541 INFO L125 PetriNetUnfolderBase]: For 5874/5874 co-relation queries the response was YES. [2024-06-27 21:33:33,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1536 conditions, 308 events. 150/308 cut-off events. For 5874/5874 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1185 event pairs, 53 based on Foata normal form. 2/309 useless extension candidates. Maximal degree in co-relation 1495. Up to 185 conditions per place. [2024-06-27 21:33:33,542 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 35 selfloop transitions, 24 changer transitions 0/61 dead transitions. [2024-06-27 21:33:33,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 61 transitions, 516 flow [2024-06-27 21:33:33,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:33,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:33,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-27 21:33:33,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34913793103448276 [2024-06-27 21:33:33,544 INFO L175 Difference]: Start difference. First operand has 83 places, 50 transitions, 364 flow. Second operand 8 states and 81 transitions. [2024-06-27 21:33:33,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 61 transitions, 516 flow [2024-06-27 21:33:33,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 61 transitions, 468 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 21:33:33,550 INFO L231 Difference]: Finished difference. Result has 85 places, 51 transitions, 381 flow [2024-06-27 21:33:33,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=381, PETRI_PLACES=85, PETRI_TRANSITIONS=51} [2024-06-27 21:33:33,550 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 57 predicate places. [2024-06-27 21:33:33,550 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 51 transitions, 381 flow [2024-06-27 21:33:33,550 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) [2024-06-27 21:33:33,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:33,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:33,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 21:33:33,551 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)] === [2024-06-27 21:33:33,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:33,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1252920052, now seen corresponding path program 3 times [2024-06-27 21:33:33,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:33,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052837465] [2024-06-27 21:33:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:33,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:34,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:34,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:34,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052837465] [2024-06-27 21:33:34,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052837465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:34,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:34,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 21:33:34,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257448396] [2024-06-27 21:33:34,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:34,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 21:33:34,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:34,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 21:33:34,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 21:33:34,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:34,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 51 transitions, 381 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) [2024-06-27 21:33:34,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:34,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:34,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:34,209 INFO L124 PetriNetUnfolderBase]: 147/303 cut-off events. [2024-06-27 21:33:34,209 INFO L125 PetriNetUnfolderBase]: For 5832/5832 co-relation queries the response was YES. [2024-06-27 21:33:34,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1517 conditions, 303 events. 147/303 cut-off events. For 5832/5832 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1148 event pairs, 54 based on Foata normal form. 2/304 useless extension candidates. Maximal degree in co-relation 1475. Up to 239 conditions per place. [2024-06-27 21:33:34,210 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 46 selfloop transitions, 16 changer transitions 0/64 dead transitions. [2024-06-27 21:33:34,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 64 transitions, 599 flow [2024-06-27 21:33:34,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:34,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-27 21:33:34,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35344827586206895 [2024-06-27 21:33:34,211 INFO L175 Difference]: Start difference. First operand has 85 places, 51 transitions, 381 flow. Second operand 8 states and 82 transitions. [2024-06-27 21:33:34,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 64 transitions, 599 flow [2024-06-27 21:33:34,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 64 transitions, 546 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 21:33:34,218 INFO L231 Difference]: Finished difference. Result has 87 places, 53 transitions, 390 flow [2024-06-27 21:33:34,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=390, PETRI_PLACES=87, PETRI_TRANSITIONS=53} [2024-06-27 21:33:34,218 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 59 predicate places. [2024-06-27 21:33:34,218 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 53 transitions, 390 flow [2024-06-27 21:33:34,218 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) [2024-06-27 21:33:34,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:34,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:34,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 21:33:34,219 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)] === [2024-06-27 21:33:34,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:34,219 INFO L85 PathProgramCache]: Analyzing trace with hash -994372612, now seen corresponding path program 4 times [2024-06-27 21:33:34,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:34,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42752481] [2024-06-27 21:33:34,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:34,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:34,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:34,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42752481] [2024-06-27 21:33:34,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42752481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:34,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:34,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 21:33:34,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276607675] [2024-06-27 21:33:34,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:34,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 21:33:34,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:34,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 21:33:34,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 21:33:34,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:34,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 53 transitions, 390 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) [2024-06-27 21:33:34,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:34,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:34,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:34,894 INFO L124 PetriNetUnfolderBase]: 144/298 cut-off events. [2024-06-27 21:33:34,895 INFO L125 PetriNetUnfolderBase]: For 5971/5971 co-relation queries the response was YES. [2024-06-27 21:33:34,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 298 events. 144/298 cut-off events. For 5971/5971 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1129 event pairs, 40 based on Foata normal form. 2/299 useless extension candidates. Maximal degree in co-relation 1413. Up to 259 conditions per place. [2024-06-27 21:33:34,896 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 49 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-06-27 21:33:34,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 63 transitions, 534 flow [2024-06-27 21:33:34,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:34,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:34,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 78 transitions. [2024-06-27 21:33:34,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33620689655172414 [2024-06-27 21:33:34,897 INFO L175 Difference]: Start difference. First operand has 87 places, 53 transitions, 390 flow. Second operand 8 states and 78 transitions. [2024-06-27 21:33:34,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 63 transitions, 534 flow [2024-06-27 21:33:34,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 63 transitions, 505 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 21:33:34,904 INFO L231 Difference]: Finished difference. Result has 91 places, 53 transitions, 389 flow [2024-06-27 21:33:34,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=389, PETRI_PLACES=91, PETRI_TRANSITIONS=53} [2024-06-27 21:33:34,905 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 63 predicate places. [2024-06-27 21:33:34,905 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 53 transitions, 389 flow [2024-06-27 21:33:34,905 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) [2024-06-27 21:33:34,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:34,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:34,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 21:33:34,906 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)] === [2024-06-27 21:33:34,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:34,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1003576822, now seen corresponding path program 5 times [2024-06-27 21:33:34,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:34,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256154916] [2024-06-27 21:33:34,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:34,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:35,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:35,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:35,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256154916] [2024-06-27 21:33:35,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256154916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:35,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:35,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 21:33:35,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251935581] [2024-06-27 21:33:35,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:35,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 21:33:35,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:35,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 21:33:35,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 21:33:35,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:35,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 53 transitions, 389 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) [2024-06-27 21:33:35,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:35,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:35,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:35,593 INFO L124 PetriNetUnfolderBase]: 141/293 cut-off events. [2024-06-27 21:33:35,593 INFO L125 PetriNetUnfolderBase]: For 5826/5826 co-relation queries the response was YES. [2024-06-27 21:33:35,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1409 conditions, 293 events. 141/293 cut-off events. For 5826/5826 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1102 event pairs, 50 based on Foata normal form. 2/294 useless extension candidates. Maximal degree in co-relation 1364. Up to 248 conditions per place. [2024-06-27 21:33:35,594 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 45 selfloop transitions, 16 changer transitions 0/63 dead transitions. [2024-06-27 21:33:35,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 63 transitions, 537 flow [2024-06-27 21:33:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:35,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:35,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-27 21:33:35,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-27 21:33:35,597 INFO L175 Difference]: Start difference. First operand has 91 places, 53 transitions, 389 flow. Second operand 8 states and 80 transitions. [2024-06-27 21:33:35,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 63 transitions, 537 flow [2024-06-27 21:33:35,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 63 transitions, 478 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 21:33:35,605 INFO L231 Difference]: Finished difference. Result has 91 places, 53 transitions, 367 flow [2024-06-27 21:33:35,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=367, PETRI_PLACES=91, PETRI_TRANSITIONS=53} [2024-06-27 21:33:35,605 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 63 predicate places. [2024-06-27 21:33:35,605 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 53 transitions, 367 flow [2024-06-27 21:33:35,606 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) [2024-06-27 21:33:35,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:35,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:35,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 21:33:35,606 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)] === [2024-06-27 21:33:35,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:35,606 INFO L85 PathProgramCache]: Analyzing trace with hash -429496955, now seen corresponding path program 1 times [2024-06-27 21:33:35,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:35,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438499378] [2024-06-27 21:33:35,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:35,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:36,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:36,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438499378] [2024-06-27 21:33:36,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438499378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:36,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:36,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:33:36,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914948348] [2024-06-27 21:33:36,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:36,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 21:33:36,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:36,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 21:33:36,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 21:33:36,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:36,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 53 transitions, 367 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) [2024-06-27 21:33:36,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:36,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:36,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:36,381 INFO L124 PetriNetUnfolderBase]: 134/280 cut-off events. [2024-06-27 21:33:36,381 INFO L125 PetriNetUnfolderBase]: For 5766/5766 co-relation queries the response was YES. [2024-06-27 21:33:36,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 280 events. 134/280 cut-off events. For 5766/5766 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1048 event pairs, 37 based on Foata normal form. 6/285 useless extension candidates. Maximal degree in co-relation 1143. Up to 141 conditions per place. [2024-06-27 21:33:36,382 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 29 selfloop transitions, 12 changer transitions 22/65 dead transitions. [2024-06-27 21:33:36,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 65 transitions, 523 flow [2024-06-27 21:33:36,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:36,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 81 transitions. [2024-06-27 21:33:36,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34913793103448276 [2024-06-27 21:33:36,383 INFO L175 Difference]: Start difference. First operand has 91 places, 53 transitions, 367 flow. Second operand 8 states and 81 transitions. [2024-06-27 21:33:36,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 65 transitions, 523 flow [2024-06-27 21:33:36,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 65 transitions, 472 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 21:33:36,391 INFO L231 Difference]: Finished difference. Result has 91 places, 39 transitions, 262 flow [2024-06-27 21:33:36,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=262, PETRI_PLACES=91, PETRI_TRANSITIONS=39} [2024-06-27 21:33:36,391 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 63 predicate places. [2024-06-27 21:33:36,391 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 39 transitions, 262 flow [2024-06-27 21:33:36,391 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) [2024-06-27 21:33:36,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:36,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:36,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 21:33:36,392 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)] === [2024-06-27 21:33:36,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:36,392 INFO L85 PathProgramCache]: Analyzing trace with hash -256776425, now seen corresponding path program 2 times [2024-06-27 21:33:36,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:36,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303053230] [2024-06-27 21:33:36,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:36,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:37,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:37,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303053230] [2024-06-27 21:33:37,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303053230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:37,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:37,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 21:33:37,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414391932] [2024-06-27 21:33:37,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:37,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 21:33:37,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:37,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 21:33:37,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 21:33:37,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:37,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 39 transitions, 262 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:37,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:37,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:37,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:37,598 INFO L124 PetriNetUnfolderBase]: 96/214 cut-off events. [2024-06-27 21:33:37,599 INFO L125 PetriNetUnfolderBase]: For 6170/6170 co-relation queries the response was YES. [2024-06-27 21:33:37,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 214 events. 96/214 cut-off events. For 6170/6170 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 741 event pairs, 35 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 899. Up to 113 conditions per place. [2024-06-27 21:33:37,600 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 20 selfloop transitions, 7 changer transitions 24/53 dead transitions. [2024-06-27 21:33:37,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 53 transitions, 398 flow [2024-06-27 21:33:37,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 21:33:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 21:33:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-27 21:33:37,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 21:33:37,601 INFO L175 Difference]: Start difference. First operand has 91 places, 39 transitions, 262 flow. Second operand 9 states and 87 transitions. [2024-06-27 21:33:37,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 53 transitions, 398 flow [2024-06-27 21:33:37,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 53 transitions, 358 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-27 21:33:37,606 INFO L231 Difference]: Finished difference. Result has 76 places, 27 transitions, 174 flow [2024-06-27 21:33:37,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=174, PETRI_PLACES=76, PETRI_TRANSITIONS=27} [2024-06-27 21:33:37,606 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 48 predicate places. [2024-06-27 21:33:37,606 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 27 transitions, 174 flow [2024-06-27 21:33:37,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:37,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:37,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:37,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 21:33:37,607 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)] === [2024-06-27 21:33:37,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:37,607 INFO L85 PathProgramCache]: Analyzing trace with hash -760779437, now seen corresponding path program 3 times [2024-06-27 21:33:37,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:37,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827091486] [2024-06-27 21:33:37,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:37,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:38,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:38,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:38,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827091486] [2024-06-27 21:33:38,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827091486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:38,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:38,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 21:33:38,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152123571] [2024-06-27 21:33:38,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:38,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 21:33:38,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:38,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 21:33:38,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 21:33:38,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:38,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 27 transitions, 174 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:38,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:38,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:38,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:38,403 INFO L124 PetriNetUnfolderBase]: 55/126 cut-off events. [2024-06-27 21:33:38,403 INFO L125 PetriNetUnfolderBase]: For 2205/2205 co-relation queries the response was YES. [2024-06-27 21:33:38,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 126 events. 55/126 cut-off events. For 2205/2205 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 335 event pairs, 16 based on Foata normal form. 6/132 useless extension candidates. Maximal degree in co-relation 458. Up to 63 conditions per place. [2024-06-27 21:33:38,404 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 18 selfloop transitions, 5 changer transitions 14/39 dead transitions. [2024-06-27 21:33:38,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 39 transitions, 274 flow [2024-06-27 21:33:38,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 21:33:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 21:33:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 81 transitions. [2024-06-27 21:33:38,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3103448275862069 [2024-06-27 21:33:38,405 INFO L175 Difference]: Start difference. First operand has 76 places, 27 transitions, 174 flow. Second operand 9 states and 81 transitions. [2024-06-27 21:33:38,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 39 transitions, 274 flow [2024-06-27 21:33:38,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 39 transitions, 234 flow, removed 9 selfloop flow, removed 17 redundant places. [2024-06-27 21:33:38,407 INFO L231 Difference]: Finished difference. Result has 56 places, 23 transitions, 127 flow [2024-06-27 21:33:38,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=127, PETRI_PLACES=56, PETRI_TRANSITIONS=23} [2024-06-27 21:33:38,408 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 28 predicate places. [2024-06-27 21:33:38,408 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 23 transitions, 127 flow [2024-06-27 21:33:38,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:38,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:38,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:38,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 21:33:38,409 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)] === [2024-06-27 21:33:38,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:38,409 INFO L85 PathProgramCache]: Analyzing trace with hash -407460525, now seen corresponding path program 4 times [2024-06-27 21:33:38,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:38,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842741416] [2024-06-27 21:33:38,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:38,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:39,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:39,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842741416] [2024-06-27 21:33:39,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842741416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:39,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:39,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 21:33:39,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480126577] [2024-06-27 21:33:39,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:39,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 21:33:39,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:39,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 21:33:39,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 21:33:39,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:39,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 23 transitions, 127 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:39,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:39,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:39,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:39,320 INFO L124 PetriNetUnfolderBase]: 49/116 cut-off events. [2024-06-27 21:33:39,320 INFO L125 PetriNetUnfolderBase]: For 753/753 co-relation queries the response was YES. [2024-06-27 21:33:39,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 116 events. 49/116 cut-off events. For 753/753 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 303 event pairs, 17 based on Foata normal form. 6/122 useless extension candidates. Maximal degree in co-relation 374. Up to 55 conditions per place. [2024-06-27 21:33:39,321 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 15 selfloop transitions, 5 changer transitions 14/36 dead transitions. [2024-06-27 21:33:39,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 36 transitions, 226 flow [2024-06-27 21:33:39,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 21:33:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 21:33:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 80 transitions. [2024-06-27 21:33:39,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3065134099616858 [2024-06-27 21:33:39,321 INFO L175 Difference]: Start difference. First operand has 56 places, 23 transitions, 127 flow. Second operand 9 states and 80 transitions. [2024-06-27 21:33:39,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 36 transitions, 226 flow [2024-06-27 21:33:39,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 208 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 21:33:39,323 INFO L231 Difference]: Finished difference. Result has 52 places, 20 transitions, 103 flow [2024-06-27 21:33:39,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=103, PETRI_PLACES=52, PETRI_TRANSITIONS=20} [2024-06-27 21:33:39,323 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 24 predicate places. [2024-06-27 21:33:39,323 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 20 transitions, 103 flow [2024-06-27 21:33:39,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:33:39,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:33:39,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:39,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 21:33:39,324 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)] === [2024-06-27 21:33:39,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:33:39,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1045879307, now seen corresponding path program 5 times [2024-06-27 21:33:39,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:33:39,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821080717] [2024-06-27 21:33:39,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:33:39,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:33:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:33:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:33:39,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:33:39,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821080717] [2024-06-27 21:33:39,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821080717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:33:39,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:33:39,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 21:33:39,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292470019] [2024-06-27 21:33:39,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:33:39,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 21:33:39,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:33:39,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 21:33:39,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 21:33:39,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-27 21:33:39,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 20 transitions, 103 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) [2024-06-27 21:33:39,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:33:39,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-27 21:33:39,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:33:39,992 INFO L124 PetriNetUnfolderBase]: 22/59 cut-off events. [2024-06-27 21:33:39,992 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-06-27 21:33:39,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 59 events. 22/59 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 3 based on Foata normal form. 6/65 useless extension candidates. Maximal degree in co-relation 172. Up to 24 conditions per place. [2024-06-27 21:33:39,992 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2024-06-27 21:33:39,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 25 transitions, 143 flow [2024-06-27 21:33:39,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:33:39,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:33:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 64 transitions. [2024-06-27 21:33:39,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27586206896551724 [2024-06-27 21:33:39,993 INFO L175 Difference]: Start difference. First operand has 52 places, 20 transitions, 103 flow. Second operand 8 states and 64 transitions. [2024-06-27 21:33:39,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 25 transitions, 143 flow [2024-06-27 21:33:39,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 107 flow, removed 4 selfloop flow, removed 17 redundant places. [2024-06-27 21:33:39,994 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-06-27 21:33:39,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-06-27 21:33:39,994 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 8 predicate places. [2024-06-27 21:33:39,994 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-06-27 21:33:39,994 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) [2024-06-27 21:33:39,997 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 21:33:39,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 21:33:39,999 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 21:33:40,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 21:33:40,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 21:33:40,003 INFO L445 BasicCegarLoop]: Path program histogram: [5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:33:40,006 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 21:33:40,006 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 21:33:40,009 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 21:33:40,009 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 21:33:40,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 09:33:40 BasicIcfg [2024-06-27 21:33:40,010 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 21:33:40,010 INFO L158 Benchmark]: Toolchain (without parser) took 29694.03ms. Allocated memory was 188.7MB in the beginning and 551.6MB in the end (delta: 362.8MB). Free memory was 147.4MB in the beginning and 481.6MB in the end (delta: -334.2MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2024-06-27 21:33:40,011 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 104.9MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:33:40,011 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:33:40,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.26ms. Allocated memory is still 188.7MB. Free memory was 147.4MB in the beginning and 116.0MB in the end (delta: 31.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-27 21:33:40,012 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.82ms. Allocated memory is still 188.7MB. Free memory was 116.0MB in the beginning and 112.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 21:33:40,012 INFO L158 Benchmark]: Boogie Preprocessor took 96.57ms. Allocated memory is still 188.7MB. Free memory was 112.8MB in the beginning and 156.6MB in the end (delta: -43.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-27 21:33:40,012 INFO L158 Benchmark]: RCFGBuilder took 571.18ms. Allocated memory is still 188.7MB. Free memory was 156.6MB in the beginning and 109.5MB in the end (delta: 47.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-06-27 21:33:40,013 INFO L158 Benchmark]: TraceAbstraction took 28409.93ms. Allocated memory was 188.7MB in the beginning and 551.6MB in the end (delta: 362.8MB). Free memory was 108.6MB in the beginning and 481.6MB in the end (delta: -373.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 21:33:40,017 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 0.16ms. Allocated memory is still 104.9MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 104.9MB. Free memory is still 69.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.26ms. Allocated memory is still 188.7MB. Free memory was 147.4MB in the beginning and 116.0MB in the end (delta: 31.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.82ms. Allocated memory is still 188.7MB. Free memory was 116.0MB in the beginning and 112.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.57ms. Allocated memory is still 188.7MB. Free memory was 112.8MB in the beginning and 156.6MB in the end (delta: -43.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 571.18ms. Allocated memory is still 188.7MB. Free memory was 156.6MB in the beginning and 109.5MB in the end (delta: 47.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 28409.93ms. Allocated memory was 188.7MB in the beginning and 551.6MB in the end (delta: 362.8MB). Free memory was 108.6MB in the beginning and 481.6MB in the end (delta: -373.0MB). There was no memory consumed. 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, 46 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: 28.3s, OverallIterations: 41, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1852 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1507 mSDsluCounter, 1514 SdHoareTripleChecker+Invalid, 4.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1279 mSDsCounter, 380 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7904 IncrementalHoareTripleChecker+Invalid, 8284 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 380 mSolverCounterUnsat, 235 mSDtfsCounter, 7904 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 332 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 327 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=639occurred in iteration=16, InterpolantAutomatonStates: 301, 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, 0.3s SatisfiabilityAnalysisTime, 18.6s InterpolantComputationTime, 571 NumberOfCodeBlocks, 571 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 530 ConstructedInterpolants, 0 QuantifiedInterpolants, 21819 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 41 InterpolantComputations, 41 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! [2024-06-27 21:33:40,047 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