./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix012_pso.opt_tso.opt.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/mix012_pso.opt_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix012_pso.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:58:47,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:58:47,414 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:58:47,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:58:47,419 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:58:47,434 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:58:47,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:58:47,434 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:58:47,435 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:58:47,435 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:58:47,435 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:58:47,436 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:58:47,436 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:58:47,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:58:47,437 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:58:47,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:58:47,437 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:58:47,438 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:58:47,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:58:47,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:58:47,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:58:47,439 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:58:47,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:58:47,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:58:47,439 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:58:47,440 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:58:47,440 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:58:47,440 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:58:47,440 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:58:47,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:58:47,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:58:47,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:58:47,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:58:47,441 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:58:47,441 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:58:47,442 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:58:47,442 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:58:47,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:58:47,442 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:58:47,442 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:58:47,443 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:58:47,443 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:58:47,443 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:58:47,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:58:47,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:58:47,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:58:47,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:58:47,675 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:58:47,676 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:58:47,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix012_pso.opt_tso.opt.yml/witness.yml [2024-06-27 19:58:47,829 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:58:47,830 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:58:47,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-06-27 19:58:48,772 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:58:48,992 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:58:48,992 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix012_pso.opt_tso.opt.i [2024-06-27 19:58:49,008 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0266284d6/09aa1bf210244f15be32d267d5e1df6f/FLAG794d5c53a [2024-06-27 19:58:49,022 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0266284d6/09aa1bf210244f15be32d267d5e1df6f [2024-06-27 19:58:49,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:58:49,024 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:58:49,026 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:58:49,026 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:58:49,029 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:58:49,030 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:58:47" (1/2) ... [2024-06-27 19:58:49,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@390c6e1f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:49, skipping insertion in model container [2024-06-27 19:58:49,031 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:58:47" (1/2) ... [2024-06-27 19:58:49,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6bcef27f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:58:49, skipping insertion in model container [2024-06-27 19:58:49,055 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:58:49" (2/2) ... [2024-06-27 19:58:49,055 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@390c6e1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49, skipping insertion in model container [2024-06-27 19:58:49,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:58:49" (2/2) ... [2024-06-27 19:58:49,056 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:58:49,121 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:58:49,122 INFO L97 edCorrectnessWitness]: Location invariant before [L824-L824] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 19:58:49,122 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 1))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 19:58:49,122 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:58:49,122 INFO L106 edCorrectnessWitness]: ghost_update [L822-L822] multithreaded = 1; [2024-06-27 19:58:49,159 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:58:49,455 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:58:49,462 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:58:49,572 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:58:49,601 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:58:49,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49 WrapperNode [2024-06-27 19:58:49,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:58:49,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:58:49,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:58:49,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:58:49,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49" (1/1) ... [2024-06-27 19:58:49,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49" (1/1) ... [2024-06-27 19:58:49,639 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 136 [2024-06-27 19:58:49,643 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:58:49,644 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:58:49,645 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:58:49,645 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:58:49,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49" (1/1) ... [2024-06-27 19:58:49,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49" (1/1) ... [2024-06-27 19:58:49,661 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49" (1/1) ... [2024-06-27 19:58:49,676 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 19:58:49,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49" (1/1) ... [2024-06-27 19:58:49,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49" (1/1) ... [2024-06-27 19:58:49,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49" (1/1) ... [2024-06-27 19:58:49,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49" (1/1) ... [2024-06-27 19:58:49,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49" (1/1) ... [2024-06-27 19:58:49,687 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49" (1/1) ... [2024-06-27 19:58:49,689 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:58:49,690 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:58:49,690 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:58:49,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:58:49,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49" (1/1) ... [2024-06-27 19:58:49,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:58:49,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:58:49,730 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 19:58:49,749 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 19:58:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:58:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:58:49,763 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:58:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:58:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:58:49,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:58:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:58:49,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:58:49,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:58:49,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:58:49,766 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 19:58:49,890 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:58:49,891 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:58:50,115 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:58:50,116 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:58:50,255 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:58:50,256 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:58:50,259 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:58:50 BoogieIcfgContainer [2024-06-27 19:58:50,259 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:58:50,262 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:58:50,263 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:58:50,265 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:58:50,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:58:47" (1/4) ... [2024-06-27 19:58:50,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408041fa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:58:50, skipping insertion in model container [2024-06-27 19:58:50,267 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:58:49" (2/4) ... [2024-06-27 19:58:50,270 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408041fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:58:50, skipping insertion in model container [2024-06-27 19:58:50,270 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:58:49" (3/4) ... [2024-06-27 19:58:50,271 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@408041fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:58:50, skipping insertion in model container [2024-06-27 19:58:50,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:58:50" (4/4) ... [2024-06-27 19:58:50,272 INFO L112 eAbstractionObserver]: Analyzing ICFG mix012_pso.opt_tso.opt.i [2024-06-27 19:58:50,284 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:58:50,284 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 19:58:50,285 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:58:50,321 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:58:50,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 19:58:50,372 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-27 19:58:50,373 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:58:50,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 19:58:50,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-27 19:58:50,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-27 19:58:50,387 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:58:50,393 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;@1f0a60d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:58:50,393 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 19:58:50,396 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:58:50,396 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:58:50,396 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:58:50,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:50,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:58:50,398 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 19:58:50,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:50,401 INFO L85 PathProgramCache]: Analyzing trace with hash 353502766, now seen corresponding path program 1 times [2024-06-27 19:58:50,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:50,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89055917] [2024-06-27 19:58:50,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:50,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:51,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:51,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89055917] [2024-06-27 19:58:51,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89055917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:51,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:51,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:58:51,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207877563] [2024-06-27 19:58:51,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:51,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:58:51,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:51,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:58:51,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:58:51,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-27 19:58:51,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:51,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:51,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-27 19:58:51,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:51,306 INFO L124 PetriNetUnfolderBase]: 131/258 cut-off events. [2024-06-27 19:58:51,306 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 19:58:51,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514 conditions, 258 events. 131/258 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 960 event pairs, 75 based on Foata normal form. 1/249 useless extension candidates. Maximal degree in co-relation 503. Up to 235 conditions per place. [2024-06-27 19:58:51,311 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 20 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-27 19:58:51,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 111 flow [2024-06-27 19:58:51,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:58:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:58:51,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-06-27 19:58:51,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-06-27 19:58:51,341 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 55 transitions. [2024-06-27 19:58:51,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 111 flow [2024-06-27 19:58:51,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:58:51,344 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-27 19:58:51,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-27 19:58:51,348 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-27 19:58:51,348 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-27 19:58:51,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:51,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:51,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:51,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:58:51,350 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 19:58:51,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:51,350 INFO L85 PathProgramCache]: Analyzing trace with hash 414392929, now seen corresponding path program 1 times [2024-06-27 19:58:51,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:51,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908113261] [2024-06-27 19:58:51,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:51,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:51,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:51,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:51,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908113261] [2024-06-27 19:58:51,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908113261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:51,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:51,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:58:51,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125596683] [2024-06-27 19:58:51,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:51,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:58:51,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:51,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:58:51,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:58:51,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 19:58:51,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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 19:58:51,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:51,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 19:58:51,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:51,890 INFO L124 PetriNetUnfolderBase]: 147/275 cut-off events. [2024-06-27 19:58:51,891 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-27 19:58:51,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 275 events. 147/275 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 974 event pairs, 47 based on Foata normal form. 4/279 useless extension candidates. Maximal degree in co-relation 623. Up to 244 conditions per place. [2024-06-27 19:58:51,895 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-27 19:58:51,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 35 transitions, 159 flow [2024-06-27 19:58:51,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:58:51,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:58:51,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-06-27 19:58:51,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-06-27 19:58:51,898 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 69 transitions. [2024-06-27 19:58:51,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 35 transitions, 159 flow [2024-06-27 19:58:51,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:58:51,902 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-27 19:58:51,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-27 19:58:51,903 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-27 19:58:51,903 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-27 19:58:51,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 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 19:58:51,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:51,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:51,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:58:51,904 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 19:58:51,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1444326028, now seen corresponding path program 1 times [2024-06-27 19:58:51,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:51,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267748749] [2024-06-27 19:58:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:51,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:52,749 INFO 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 19:58:52,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:52,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267748749] [2024-06-27 19:58:52,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267748749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:52,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:52,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:58:52,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442064348] [2024-06-27 19:58:52,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:52,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:58:52,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:52,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:58:52,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:58:52,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 30 [2024-06-27 19:58:52,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:52,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:52,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 30 [2024-06-27 19:58:52,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:52,973 INFO L124 PetriNetUnfolderBase]: 143/267 cut-off events. [2024-06-27 19:58:52,973 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-06-27 19:58:52,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 267 events. 143/267 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 928 event pairs, 25 based on Foata normal form. 4/271 useless extension candidates. Maximal degree in co-relation 671. Up to 218 conditions per place. [2024-06-27 19:58:52,975 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 29 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-06-27 19:58:52,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 204 flow [2024-06-27 19:58:52,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:58:52,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:58:52,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-06-27 19:58:52,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2024-06-27 19:58:52,979 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 6 states and 93 transitions. [2024-06-27 19:58:52,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 204 flow [2024-06-27 19:58:52,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 41 transitions, 192 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 19:58:52,982 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 109 flow [2024-06-27 19:58:52,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2024-06-27 19:58:52,983 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2024-06-27 19:58:52,984 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 109 flow [2024-06-27 19:58:52,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:52,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:52,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:52,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:58:52,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:52,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:52,985 INFO L85 PathProgramCache]: Analyzing trace with hash -402717698, now seen corresponding path program 1 times [2024-06-27 19:58:52,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:52,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566743879] [2024-06-27 19:58:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:52,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:53,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:53,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566743879] [2024-06-27 19:58:53,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566743879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:53,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:53,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:58:53,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208653814] [2024-06-27 19:58:53,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:53,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:58:53,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:53,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:58:53,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:58:53,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 19:58:53,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 19:58:53,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:53,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 19:58:53,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:53,545 INFO L124 PetriNetUnfolderBase]: 119/237 cut-off events. [2024-06-27 19:58:53,545 INFO L125 PetriNetUnfolderBase]: For 264/264 co-relation queries the response was YES. [2024-06-27 19:58:53,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 237 events. 119/237 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 846 event pairs, 34 based on Foata normal form. 1/238 useless extension candidates. Maximal degree in co-relation 642. Up to 211 conditions per place. [2024-06-27 19:58:53,547 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 24 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2024-06-27 19:58:53,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 34 transitions, 187 flow [2024-06-27 19:58:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:58:53,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:58:53,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-06-27 19:58:53,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44666666666666666 [2024-06-27 19:58:53,548 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 109 flow. Second operand 5 states and 67 transitions. [2024-06-27 19:58:53,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 34 transitions, 187 flow [2024-06-27 19:58:53,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 171 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 19:58:53,550 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 120 flow [2024-06-27 19:58:53,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2024-06-27 19:58:53,550 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-06-27 19:58:53,551 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 120 flow [2024-06-27 19:58:53,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 19:58:53,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:53,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:53,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:58:53,551 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:58:53,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:53,552 INFO L85 PathProgramCache]: Analyzing trace with hash 420316266, now seen corresponding path program 1 times [2024-06-27 19:58:53,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:53,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937075004] [2024-06-27 19:58:53,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:53,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:54,154 INFO 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 19:58:54,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:54,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937075004] [2024-06-27 19:58:54,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937075004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:54,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:54,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:58:54,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551241875] [2024-06-27 19:58:54,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:54,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:58:54,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:54,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:58:54,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:58:54,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 30 [2024-06-27 19:58:54,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 120 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:54,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:54,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 30 [2024-06-27 19:58:54,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:54,305 INFO L124 PetriNetUnfolderBase]: 115/231 cut-off events. [2024-06-27 19:58:54,306 INFO L125 PetriNetUnfolderBase]: For 329/329 co-relation queries the response was YES. [2024-06-27 19:58:54,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 231 events. 115/231 cut-off events. For 329/329 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 814 event pairs, 32 based on Foata normal form. 2/233 useless extension candidates. Maximal degree in co-relation 658. Up to 199 conditions per place. [2024-06-27 19:58:54,307 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 26 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-27 19:58:54,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 212 flow [2024-06-27 19:58:54,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:58:54,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:58:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 79 transitions. [2024-06-27 19:58:54,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-27 19:58:54,313 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 120 flow. Second operand 6 states and 79 transitions. [2024-06-27 19:58:54,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 212 flow [2024-06-27 19:58:54,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 38 transitions, 201 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 19:58:54,317 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 142 flow [2024-06-27 19:58:54,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-06-27 19:58:54,318 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-06-27 19:58:54,318 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 142 flow [2024-06-27 19:58:54,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:54,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:54,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:54,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:58:54,319 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 19:58:54,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:54,319 INFO L85 PathProgramCache]: Analyzing trace with hash 158987699, now seen corresponding path program 1 times [2024-06-27 19:58:54,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:54,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194435552] [2024-06-27 19:58:54,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:54,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:54,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:54,755 INFO 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 19:58:54,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:54,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194435552] [2024-06-27 19:58:54,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194435552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:54,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:54,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:58:54,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523302997] [2024-06-27 19:58:54,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:54,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:58:54,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:54,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:58:54,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:58:54,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:58:54,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 142 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:54,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:54,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:58:54,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:54,953 INFO L124 PetriNetUnfolderBase]: 141/267 cut-off events. [2024-06-27 19:58:54,953 INFO L125 PetriNetUnfolderBase]: For 511/511 co-relation queries the response was YES. [2024-06-27 19:58:54,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 267 events. 141/267 cut-off events. For 511/511 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 923 event pairs, 38 based on Foata normal form. 2/269 useless extension candidates. Maximal degree in co-relation 832. Up to 237 conditions per place. [2024-06-27 19:58:54,954 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 32 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-27 19:58:54,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 256 flow [2024-06-27 19:58:54,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:58:54,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:58:54,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-27 19:58:54,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-27 19:58:54,956 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 142 flow. Second operand 6 states and 77 transitions. [2024-06-27 19:58:54,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 256 flow [2024-06-27 19:58:54,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 239 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 19:58:54,958 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 158 flow [2024-06-27 19:58:54,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-27 19:58:54,958 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-27 19:58:54,958 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 158 flow [2024-06-27 19:58:54,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:54,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:54,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:54,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:58:54,959 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 19:58:54,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:54,959 INFO L85 PathProgramCache]: Analyzing trace with hash 144895409, now seen corresponding path program 2 times [2024-06-27 19:58:54,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:54,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100476443] [2024-06-27 19:58:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:54,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:54,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:55,411 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 19:58:55,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:55,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100476443] [2024-06-27 19:58:55,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100476443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:55,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:55,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:58:55,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366050118] [2024-06-27 19:58:55,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:55,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:58:55,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:55,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:58:55,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:58:55,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:58:55,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:55,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:55,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:58:55,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:55,583 INFO L124 PetriNetUnfolderBase]: 142/272 cut-off events. [2024-06-27 19:58:55,584 INFO L125 PetriNetUnfolderBase]: For 682/684 co-relation queries the response was YES. [2024-06-27 19:58:55,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 912 conditions, 272 events. 142/272 cut-off events. For 682/684 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 970 event pairs, 42 based on Foata normal form. 4/276 useless extension candidates. Maximal degree in co-relation 891. Up to 230 conditions per place. [2024-06-27 19:58:55,585 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 29 selfloop transitions, 11 changer transitions 0/43 dead transitions. [2024-06-27 19:58:55,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 272 flow [2024-06-27 19:58:55,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:58:55,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:58:55,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-27 19:58:55,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-27 19:58:55,586 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 158 flow. Second operand 6 states and 77 transitions. [2024-06-27 19:58:55,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 272 flow [2024-06-27 19:58:55,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 255 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 19:58:55,588 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 184 flow [2024-06-27 19:58:55,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-27 19:58:55,589 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-27 19:58:55,589 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 184 flow [2024-06-27 19:58:55,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:55,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:55,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:55,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:58:55,590 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 19:58:55,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:55,590 INFO L85 PathProgramCache]: Analyzing trace with hash -737901277, now seen corresponding path program 1 times [2024-06-27 19:58:55,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:55,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659994600] [2024-06-27 19:58:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:55,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:56,289 INFO 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 19:58:56,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:56,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659994600] [2024-06-27 19:58:56,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659994600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:56,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:56,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:58:56,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453990578] [2024-06-27 19:58:56,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:56,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:58:56,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:56,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:58:56,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:58:56,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:58:56,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 184 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:56,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:56,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:58:56,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:56,600 INFO L124 PetriNetUnfolderBase]: 157/302 cut-off events. [2024-06-27 19:58:56,600 INFO L125 PetriNetUnfolderBase]: For 891/891 co-relation queries the response was YES. [2024-06-27 19:58:56,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1079 conditions, 302 events. 157/302 cut-off events. For 891/891 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1129 event pairs, 38 based on Foata normal form. 1/303 useless extension candidates. Maximal degree in co-relation 1057. Up to 250 conditions per place. [2024-06-27 19:58:56,602 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 37 selfloop transitions, 16 changer transitions 0/56 dead transitions. [2024-06-27 19:58:56,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 376 flow [2024-06-27 19:58:56,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:58:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:58:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 19:58:56,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 19:58:56,603 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 184 flow. Second operand 8 states and 100 transitions. [2024-06-27 19:58:56,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 56 transitions, 376 flow [2024-06-27 19:58:56,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 56 transitions, 345 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 19:58:56,605 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 262 flow [2024-06-27 19:58:56,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=262, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-27 19:58:56,606 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2024-06-27 19:58:56,606 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 262 flow [2024-06-27 19:58:56,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:56,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:56,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:56,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:58:56,607 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 19:58:56,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:56,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1695715493, now seen corresponding path program 2 times [2024-06-27 19:58:56,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:56,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662851008] [2024-06-27 19:58:56,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:56,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:57,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:57,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:57,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662851008] [2024-06-27 19:58:57,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662851008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:57,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:57,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:58:57,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272982324] [2024-06-27 19:58:57,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:57,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:58:57,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:57,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:58:57,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:58:57,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:58:57,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 262 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:57,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:57,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:58:57,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:57,340 INFO L124 PetriNetUnfolderBase]: 155/299 cut-off events. [2024-06-27 19:58:57,340 INFO L125 PetriNetUnfolderBase]: For 1146/1146 co-relation queries the response was YES. [2024-06-27 19:58:57,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 299 events. 155/299 cut-off events. For 1146/1146 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1134 event pairs, 37 based on Foata normal form. 1/300 useless extension candidates. Maximal degree in co-relation 1117. Up to 242 conditions per place. [2024-06-27 19:58:57,345 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 37 selfloop transitions, 18 changer transitions 0/58 dead transitions. [2024-06-27 19:58:57,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 428 flow [2024-06-27 19:58:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:58:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:58:57,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 19:58:57,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-27 19:58:57,348 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 262 flow. Second operand 7 states and 89 transitions. [2024-06-27 19:58:57,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 428 flow [2024-06-27 19:58:57,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 58 transitions, 400 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-27 19:58:57,350 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 303 flow [2024-06-27 19:58:57,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=303, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-27 19:58:57,351 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 27 predicate places. [2024-06-27 19:58:57,351 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 303 flow [2024-06-27 19:58:57,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:57,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:57,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:57,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:58:57,351 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 19:58:57,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:57,351 INFO L85 PathProgramCache]: Analyzing trace with hash 71988667, now seen corresponding path program 1 times [2024-06-27 19:58:57,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:57,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132627324] [2024-06-27 19:58:57,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:57,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:57,871 INFO 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 19:58:57,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:57,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132627324] [2024-06-27 19:58:57,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132627324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:57,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:57,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:58:57,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097057280] [2024-06-27 19:58:57,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:57,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:58:57,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:57,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:58:57,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:58:57,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:58:57,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 303 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:57,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:57,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:58:57,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:58,101 INFO L124 PetriNetUnfolderBase]: 161/309 cut-off events. [2024-06-27 19:58:58,101 INFO L125 PetriNetUnfolderBase]: For 1526/1526 co-relation queries the response was YES. [2024-06-27 19:58:58,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 309 events. 161/309 cut-off events. For 1526/1526 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1155 event pairs, 36 based on Foata normal form. 2/311 useless extension candidates. Maximal degree in co-relation 1209. Up to 262 conditions per place. [2024-06-27 19:58:58,103 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 44 selfloop transitions, 13 changer transitions 0/60 dead transitions. [2024-06-27 19:58:58,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 60 transitions, 469 flow [2024-06-27 19:58:58,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:58:58,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:58:58,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-27 19:58:58,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-27 19:58:58,105 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 303 flow. Second operand 7 states and 88 transitions. [2024-06-27 19:58:58,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 60 transitions, 469 flow [2024-06-27 19:58:58,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 420 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 19:58:58,108 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 310 flow [2024-06-27 19:58:58,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-06-27 19:58:58,111 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-27 19:58:58,111 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 310 flow [2024-06-27 19:58:58,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:58,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:58,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:58,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:58:58,111 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 19:58:58,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:58,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1518341987, now seen corresponding path program 2 times [2024-06-27 19:58:58,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:58,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237060315] [2024-06-27 19:58:58,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:58,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:58:58,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:58,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237060315] [2024-06-27 19:58:58,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237060315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:58,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:58,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:58:58,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385286503] [2024-06-27 19:58:58,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:58,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:58:58,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:58,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:58:58,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:58:58,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:58:58,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 310 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:58,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:58,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:58:58,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:58,965 INFO L124 PetriNetUnfolderBase]: 169/323 cut-off events. [2024-06-27 19:58:58,965 INFO L125 PetriNetUnfolderBase]: For 1528/1530 co-relation queries the response was YES. [2024-06-27 19:58:58,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 323 events. 169/323 cut-off events. For 1528/1530 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1210 event pairs, 39 based on Foata normal form. 3/326 useless extension candidates. Maximal degree in co-relation 1285. Up to 252 conditions per place. [2024-06-27 19:58:58,967 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 41 selfloop transitions, 21 changer transitions 0/65 dead transitions. [2024-06-27 19:58:58,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 520 flow [2024-06-27 19:58:58,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:58:58,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:58:58,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-06-27 19:58:58,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-27 19:58:58,968 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 310 flow. Second operand 7 states and 89 transitions. [2024-06-27 19:58:58,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 520 flow [2024-06-27 19:58:58,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 65 transitions, 488 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 19:58:58,971 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 381 flow [2024-06-27 19:58:58,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=381, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-27 19:58:58,972 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-06-27 19:58:58,972 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 381 flow [2024-06-27 19:58:58,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:58,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:58,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:58,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:58:58,973 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 19:58:58,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:58,973 INFO L85 PathProgramCache]: Analyzing trace with hash 196791339, now seen corresponding path program 3 times [2024-06-27 19:58:58,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:58,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489999567] [2024-06-27 19:58:58,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:58,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:58:59,585 INFO 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 19:58:59,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:58:59,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489999567] [2024-06-27 19:58:59,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489999567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:58:59,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:58:59,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:58:59,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483589119] [2024-06-27 19:58:59,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:58:59,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:58:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:58:59,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:58:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:58:59,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:58:59,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 381 flow. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:59,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:58:59,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:58:59,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:58:59,793 INFO L124 PetriNetUnfolderBase]: 165/317 cut-off events. [2024-06-27 19:58:59,794 INFO L125 PetriNetUnfolderBase]: For 1871/1873 co-relation queries the response was YES. [2024-06-27 19:58:59,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 317 events. 165/317 cut-off events. For 1871/1873 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1206 event pairs, 39 based on Foata normal form. 4/321 useless extension candidates. Maximal degree in co-relation 1366. Up to 260 conditions per place. [2024-06-27 19:58:59,795 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 47 selfloop transitions, 16 changer transitions 0/66 dead transitions. [2024-06-27 19:58:59,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 558 flow [2024-06-27 19:58:59,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:58:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:58:59,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-27 19:58:59,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-27 19:58:59,797 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 381 flow. Second operand 7 states and 88 transitions. [2024-06-27 19:58:59,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 558 flow [2024-06-27 19:58:59,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 66 transitions, 526 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 19:58:59,800 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 396 flow [2024-06-27 19:58:59,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=396, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-06-27 19:58:59,800 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-27 19:58:59,801 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 396 flow [2024-06-27 19:58:59,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:58:59,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:58:59,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:58:59,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:58:59,801 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 19:58:59,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:58:59,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1414838009, now seen corresponding path program 1 times [2024-06-27 19:58:59,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:58:59,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109311499] [2024-06-27 19:58:59,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:58:59,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:58:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:00,551 INFO 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 19:59:00,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:00,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109311499] [2024-06-27 19:59:00,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109311499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:00,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:00,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:59:00,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365553250] [2024-06-27 19:59:00,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:00,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:59:00,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:00,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:59:00,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:59:00,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:00,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 396 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:00,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:00,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:00,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:00,860 INFO L124 PetriNetUnfolderBase]: 168/323 cut-off events. [2024-06-27 19:59:00,860 INFO L125 PetriNetUnfolderBase]: For 2061/2061 co-relation queries the response was YES. [2024-06-27 19:59:00,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 323 events. 168/323 cut-off events. For 2061/2061 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1235 event pairs, 35 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 1442. Up to 259 conditions per place. [2024-06-27 19:59:00,862 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 48 selfloop transitions, 20 changer transitions 0/71 dead transitions. [2024-06-27 19:59:00,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 590 flow [2024-06-27 19:59:00,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:00,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:00,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 19:59:00,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 19:59:00,863 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 396 flow. Second operand 8 states and 99 transitions. [2024-06-27 19:59:00,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 590 flow [2024-06-27 19:59:00,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 556 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:59:00,867 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 432 flow [2024-06-27 19:59:00,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=432, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-06-27 19:59:00,867 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-27 19:59:00,867 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 432 flow [2024-06-27 19:59:00,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:00,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:00,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:00,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:59:00,868 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 19:59:00,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:00,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1027422045, now seen corresponding path program 2 times [2024-06-27 19:59:00,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:00,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284443297] [2024-06-27 19:59:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:00,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:01,675 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 19:59:01,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:01,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284443297] [2024-06-27 19:59:01,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284443297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:01,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:01,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:59:01,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655160842] [2024-06-27 19:59:01,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:01,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:59:01,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:01,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:59:01,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:59:01,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:01,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 432 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:01,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:01,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:01,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:01,910 INFO L124 PetriNetUnfolderBase]: 171/330 cut-off events. [2024-06-27 19:59:01,910 INFO L125 PetriNetUnfolderBase]: For 2483/2483 co-relation queries the response was YES. [2024-06-27 19:59:01,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1563 conditions, 330 events. 171/330 cut-off events. For 2483/2483 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1273 event pairs, 35 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 1531. Up to 276 conditions per place. [2024-06-27 19:59:01,912 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 54 selfloop transitions, 15 changer transitions 0/72 dead transitions. [2024-06-27 19:59:01,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 636 flow [2024-06-27 19:59:01,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:01,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 19:59:01,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-27 19:59:01,914 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 432 flow. Second operand 8 states and 98 transitions. [2024-06-27 19:59:01,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 636 flow [2024-06-27 19:59:01,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 584 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:01,917 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 443 flow [2024-06-27 19:59:01,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=443, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-06-27 19:59:01,920 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-27 19:59:01,921 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 443 flow [2024-06-27 19:59:01,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:01,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:01,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:01,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:59:01,921 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 19:59:01,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:01,922 INFO L85 PathProgramCache]: Analyzing trace with hash 846525442, now seen corresponding path program 1 times [2024-06-27 19:59:01,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:01,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376928692] [2024-06-27 19:59:01,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:01,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:02,519 INFO 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 19:59:02,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:02,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376928692] [2024-06-27 19:59:02,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376928692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:02,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:02,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:59:02,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672826691] [2024-06-27 19:59:02,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:02,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:59:02,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:02,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:59:02,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:59:02,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:02,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 443 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:02,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:02,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:02,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:02,797 INFO L124 PetriNetUnfolderBase]: 183/350 cut-off events. [2024-06-27 19:59:02,797 INFO L125 PetriNetUnfolderBase]: For 3220/3220 co-relation queries the response was YES. [2024-06-27 19:59:02,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1684 conditions, 350 events. 183/350 cut-off events. For 3220/3220 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1369 event pairs, 34 based on Foata normal form. 4/354 useless extension candidates. Maximal degree in co-relation 1651. Up to 287 conditions per place. [2024-06-27 19:59:02,799 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 57 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2024-06-27 19:59:02,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 76 transitions, 665 flow [2024-06-27 19:59:02,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:02,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:02,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 19:59:02,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 19:59:02,801 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 443 flow. Second operand 8 states and 100 transitions. [2024-06-27 19:59:02,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 76 transitions, 665 flow [2024-06-27 19:59:02,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 76 transitions, 618 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:02,805 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 472 flow [2024-06-27 19:59:02,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=472, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-06-27 19:59:02,806 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-06-27 19:59:02,806 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 472 flow [2024-06-27 19:59:02,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:02,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:02,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:02,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:59:02,806 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 19:59:02,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:02,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1805564983, now seen corresponding path program 3 times [2024-06-27 19:59:02,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:02,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903604324] [2024-06-27 19:59:02,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:02,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:03,632 INFO 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 19:59:03,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:03,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903604324] [2024-06-27 19:59:03,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903604324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:03,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:03,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:59:03,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233117447] [2024-06-27 19:59:03,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:03,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:59:03,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:03,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:59:03,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:59:03,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:03,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 472 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:03,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:03,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:03,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:03,938 INFO L124 PetriNetUnfolderBase]: 186/358 cut-off events. [2024-06-27 19:59:03,938 INFO L125 PetriNetUnfolderBase]: For 3451/3453 co-relation queries the response was YES. [2024-06-27 19:59:03,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1792 conditions, 358 events. 186/358 cut-off events. For 3451/3453 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1420 event pairs, 37 based on Foata normal form. 3/361 useless extension candidates. Maximal degree in co-relation 1758. Up to 292 conditions per place. [2024-06-27 19:59:03,941 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 55 selfloop transitions, 18 changer transitions 0/76 dead transitions. [2024-06-27 19:59:03,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 698 flow [2024-06-27 19:59:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:03,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 19:59:03,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-27 19:59:03,942 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 472 flow. Second operand 8 states and 98 transitions. [2024-06-27 19:59:03,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 698 flow [2024-06-27 19:59:03,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 644 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:03,946 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 493 flow [2024-06-27 19:59:03,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=493, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-06-27 19:59:03,947 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-27 19:59:03,947 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 493 flow [2024-06-27 19:59:03,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:03,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:03,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:03,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:59:03,948 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 19:59:03,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:03,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1589180848, now seen corresponding path program 2 times [2024-06-27 19:59:03,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:03,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834620423] [2024-06-27 19:59:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:03,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:04,629 INFO 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 19:59:04,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:04,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834620423] [2024-06-27 19:59:04,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834620423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:04,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:04,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:59:04,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280894628] [2024-06-27 19:59:04,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:04,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:59:04,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:04,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:59:04,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:59:04,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:04,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 493 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:04,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:04,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:04,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:04,863 INFO L124 PetriNetUnfolderBase]: 198/378 cut-off events. [2024-06-27 19:59:04,863 INFO L125 PetriNetUnfolderBase]: For 4352/4354 co-relation queries the response was YES. [2024-06-27 19:59:04,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1901 conditions, 378 events. 198/378 cut-off events. For 4352/4354 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1524 event pairs, 37 based on Foata normal form. 6/384 useless extension candidates. Maximal degree in co-relation 1866. Up to 303 conditions per place. [2024-06-27 19:59:04,865 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 58 selfloop transitions, 19 changer transitions 0/80 dead transitions. [2024-06-27 19:59:04,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 739 flow [2024-06-27 19:59:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:04,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-27 19:59:04,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 19:59:04,867 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 493 flow. Second operand 8 states and 100 transitions. [2024-06-27 19:59:04,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 739 flow [2024-06-27 19:59:04,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 680 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:04,871 INFO L231 Difference]: Finished difference. Result has 76 places, 68 transitions, 524 flow [2024-06-27 19:59:04,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=524, PETRI_PLACES=76, PETRI_TRANSITIONS=68} [2024-06-27 19:59:04,872 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-06-27 19:59:04,872 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 68 transitions, 524 flow [2024-06-27 19:59:04,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:04,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:04,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:04,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:59:04,873 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 19:59:04,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:04,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1812916633, now seen corresponding path program 4 times [2024-06-27 19:59:04,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:04,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767995802] [2024-06-27 19:59:04,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:04,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:05,615 INFO 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 19:59:05,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:05,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767995802] [2024-06-27 19:59:05,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767995802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:05,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:05,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:59:05,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807862846] [2024-06-27 19:59:05,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:05,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:59:05,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:05,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:59:05,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:59:05,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:05,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 68 transitions, 524 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:05,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:05,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:05,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:05,910 INFO L124 PetriNetUnfolderBase]: 196/375 cut-off events. [2024-06-27 19:59:05,910 INFO L125 PetriNetUnfolderBase]: For 4302/4304 co-relation queries the response was YES. [2024-06-27 19:59:05,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1926 conditions, 375 events. 196/375 cut-off events. For 4302/4304 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1504 event pairs, 37 based on Foata normal form. 3/378 useless extension candidates. Maximal degree in co-relation 1890. Up to 291 conditions per place. [2024-06-27 19:59:05,912 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 51 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-27 19:59:05,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 80 transitions, 754 flow [2024-06-27 19:59:05,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:05,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 19:59:05,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-27 19:59:05,913 INFO L175 Difference]: Start difference. First operand has 76 places, 68 transitions, 524 flow. Second operand 8 states and 98 transitions. [2024-06-27 19:59:05,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 80 transitions, 754 flow [2024-06-27 19:59:05,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 686 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:05,918 INFO L231 Difference]: Finished difference. Result has 78 places, 70 transitions, 553 flow [2024-06-27 19:59:05,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=553, PETRI_PLACES=78, PETRI_TRANSITIONS=70} [2024-06-27 19:59:05,919 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 49 predicate places. [2024-06-27 19:59:05,920 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 70 transitions, 553 flow [2024-06-27 19:59:05,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:05,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:05,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:05,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:59:05,920 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 19:59:05,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:05,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1812916850, now seen corresponding path program 3 times [2024-06-27 19:59:05,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:05,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10739446] [2024-06-27 19:59:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:05,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:05,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:06,565 INFO 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 19:59:06,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:06,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10739446] [2024-06-27 19:59:06,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10739446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:06,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:06,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:59:06,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655464024] [2024-06-27 19:59:06,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:06,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:59:06,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:06,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:59:06,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:59:06,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:06,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 70 transitions, 553 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:06,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:06,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:06,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:06,822 INFO L124 PetriNetUnfolderBase]: 202/385 cut-off events. [2024-06-27 19:59:06,822 INFO L125 PetriNetUnfolderBase]: For 4699/4701 co-relation queries the response was YES. [2024-06-27 19:59:06,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1967 conditions, 385 events. 202/385 cut-off events. For 4699/4701 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1539 event pairs, 36 based on Foata normal form. 4/389 useless extension candidates. Maximal degree in co-relation 1930. Up to 263 conditions per place. [2024-06-27 19:59:06,825 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 54 selfloop transitions, 31 changer transitions 0/88 dead transitions. [2024-06-27 19:59:06,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 849 flow [2024-06-27 19:59:06,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:06,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:06,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-27 19:59:06,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 19:59:06,826 INFO L175 Difference]: Start difference. First operand has 78 places, 70 transitions, 553 flow. Second operand 8 states and 104 transitions. [2024-06-27 19:59:06,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 849 flow [2024-06-27 19:59:06,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 768 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:06,831 INFO L231 Difference]: Finished difference. Result has 81 places, 74 transitions, 595 flow [2024-06-27 19:59:06,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=595, PETRI_PLACES=81, PETRI_TRANSITIONS=74} [2024-06-27 19:59:06,832 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-06-27 19:59:06,832 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 74 transitions, 595 flow [2024-06-27 19:59:06,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:06,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:06,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:06,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:59:06,833 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 19:59:06,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:06,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1813183760, now seen corresponding path program 4 times [2024-06-27 19:59:06,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:06,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787514725] [2024-06-27 19:59:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:06,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:07,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:07,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787514725] [2024-06-27 19:59:07,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787514725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:07,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:07,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:59:07,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473405491] [2024-06-27 19:59:07,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:07,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:59:07,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:07,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:59:07,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:59:07,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:07,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 74 transitions, 595 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:07,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:07,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:07,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:07,775 INFO L124 PetriNetUnfolderBase]: 198/377 cut-off events. [2024-06-27 19:59:07,776 INFO L125 PetriNetUnfolderBase]: For 4784/4786 co-relation queries the response was YES. [2024-06-27 19:59:07,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1965 conditions, 377 events. 198/377 cut-off events. For 4784/4786 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1498 event pairs, 36 based on Foata normal form. 2/379 useless extension candidates. Maximal degree in co-relation 1926. Up to 330 conditions per place. [2024-06-27 19:59:07,778 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 69 selfloop transitions, 12 changer transitions 0/84 dead transitions. [2024-06-27 19:59:07,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 781 flow [2024-06-27 19:59:07,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:07,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:07,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-27 19:59:07,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 19:59:07,779 INFO L175 Difference]: Start difference. First operand has 81 places, 74 transitions, 595 flow. Second operand 8 states and 95 transitions. [2024-06-27 19:59:07,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 781 flow [2024-06-27 19:59:07,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 84 transitions, 715 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 19:59:07,786 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 558 flow [2024-06-27 19:59:07,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=558, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2024-06-27 19:59:07,786 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-06-27 19:59:07,786 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 558 flow [2024-06-27 19:59:07,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:07,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:07,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:07,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:59:07,787 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 19:59:07,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:07,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1813193680, now seen corresponding path program 1 times [2024-06-27 19:59:07,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:07,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918024240] [2024-06-27 19:59:07,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:07,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:08,659 INFO 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 19:59:08,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:08,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918024240] [2024-06-27 19:59:08,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918024240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:08,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:08,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:08,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708944956] [2024-06-27 19:59:08,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:08,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:08,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:08,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:08,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:08,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:08,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 558 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:08,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:08,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:08,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:08,922 INFO L124 PetriNetUnfolderBase]: 195/372 cut-off events. [2024-06-27 19:59:08,922 INFO L125 PetriNetUnfolderBase]: For 4681/4683 co-relation queries the response was YES. [2024-06-27 19:59:08,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1894 conditions, 372 events. 195/372 cut-off events. For 4681/4683 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1468 event pairs, 35 based on Foata normal form. 2/374 useless extension candidates. Maximal degree in co-relation 1853. Up to 327 conditions per place. [2024-06-27 19:59:08,925 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 70 selfloop transitions, 13 changer transitions 0/86 dead transitions. [2024-06-27 19:59:08,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 86 transitions, 761 flow [2024-06-27 19:59:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:08,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:08,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 19:59:08,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37777777777777777 [2024-06-27 19:59:08,926 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 558 flow. Second operand 9 states and 102 transitions. [2024-06-27 19:59:08,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 86 transitions, 761 flow [2024-06-27 19:59:08,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 86 transitions, 713 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:08,933 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 558 flow [2024-06-27 19:59:08,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=558, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-06-27 19:59:08,934 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 59 predicate places. [2024-06-27 19:59:08,934 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 558 flow [2024-06-27 19:59:08,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:08,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:08,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:08,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:59:08,935 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 19:59:08,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:08,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1903637406, now seen corresponding path program 1 times [2024-06-27 19:59:08,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:08,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553150952] [2024-06-27 19:59:08,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:08,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:09,444 INFO 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 19:59:09,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:09,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553150952] [2024-06-27 19:59:09,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553150952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:09,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:09,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:59:09,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077107203] [2024-06-27 19:59:09,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:09,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:59:09,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:09,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:59:09,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:59:09,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:09,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 558 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:09,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:09,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:09,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:09,751 INFO L124 PetriNetUnfolderBase]: 199/381 cut-off events. [2024-06-27 19:59:09,751 INFO L125 PetriNetUnfolderBase]: For 5007/5007 co-relation queries the response was YES. [2024-06-27 19:59:09,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1954 conditions, 381 events. 199/381 cut-off events. For 5007/5007 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1524 event pairs, 13 based on Foata normal form. 2/383 useless extension candidates. Maximal degree in co-relation 1911. Up to 294 conditions per place. [2024-06-27 19:59:09,754 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 73 selfloop transitions, 16 changer transitions 0/92 dead transitions. [2024-06-27 19:59:09,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 92 transitions, 788 flow [2024-06-27 19:59:09,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:09,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-27 19:59:09,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-27 19:59:09,756 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 558 flow. Second operand 8 states and 98 transitions. [2024-06-27 19:59:09,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 92 transitions, 788 flow [2024-06-27 19:59:09,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 92 transitions, 760 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:09,764 INFO L231 Difference]: Finished difference. Result has 90 places, 77 transitions, 578 flow [2024-06-27 19:59:09,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=578, PETRI_PLACES=90, PETRI_TRANSITIONS=77} [2024-06-27 19:59:09,765 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2024-06-27 19:59:09,765 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 578 flow [2024-06-27 19:59:09,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:09,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:09,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:09,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:59:09,766 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 19:59:09,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:09,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1750094172, now seen corresponding path program 2 times [2024-06-27 19:59:09,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:09,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230523483] [2024-06-27 19:59:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:09,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:10,299 INFO 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 19:59:10,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:10,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230523483] [2024-06-27 19:59:10,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230523483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:10,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:10,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:59:10,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911758603] [2024-06-27 19:59:10,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:10,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:59:10,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:10,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:59:10,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:59:10,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:10,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 77 transitions, 578 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:10,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:10,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:10,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:10,587 INFO L124 PetriNetUnfolderBase]: 203/389 cut-off events. [2024-06-27 19:59:10,587 INFO L125 PetriNetUnfolderBase]: For 5489/5489 co-relation queries the response was YES. [2024-06-27 19:59:10,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2028 conditions, 389 events. 203/389 cut-off events. For 5489/5489 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1581 event pairs, 30 based on Foata normal form. 2/391 useless extension candidates. Maximal degree in co-relation 1984. Up to 318 conditions per place. [2024-06-27 19:59:10,590 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 70 selfloop transitions, 19 changer transitions 0/92 dead transitions. [2024-06-27 19:59:10,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 808 flow [2024-06-27 19:59:10,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:10,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:10,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-27 19:59:10,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 19:59:10,593 INFO L175 Difference]: Start difference. First operand has 90 places, 77 transitions, 578 flow. Second operand 8 states and 99 transitions. [2024-06-27 19:59:10,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 808 flow [2024-06-27 19:59:10,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 770 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:10,600 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 597 flow [2024-06-27 19:59:10,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=597, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-06-27 19:59:10,601 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-27 19:59:10,601 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 597 flow [2024-06-27 19:59:10,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:10,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:10,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:10,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:59:10,602 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 19:59:10,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:10,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1900775486, now seen corresponding path program 1 times [2024-06-27 19:59:10,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:10,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125312621] [2024-06-27 19:59:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:10,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:11,371 INFO 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 19:59:11,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:11,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125312621] [2024-06-27 19:59:11,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125312621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:11,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:11,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:11,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729806856] [2024-06-27 19:59:11,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:11,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:11,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:11,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:11,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:11,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:11,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 597 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:11,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:11,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:11,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:11,694 INFO L124 PetriNetUnfolderBase]: 206/394 cut-off events. [2024-06-27 19:59:11,694 INFO L125 PetriNetUnfolderBase]: For 5810/5810 co-relation queries the response was YES. [2024-06-27 19:59:11,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2085 conditions, 394 events. 206/394 cut-off events. For 5810/5810 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1598 event pairs, 29 based on Foata normal form. 1/395 useless extension candidates. Maximal degree in co-relation 2040. Up to 323 conditions per place. [2024-06-27 19:59:11,697 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 69 selfloop transitions, 22 changer transitions 0/94 dead transitions. [2024-06-27 19:59:11,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 94 transitions, 849 flow [2024-06-27 19:59:11,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:11,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:11,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 19:59:11,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-27 19:59:11,699 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 597 flow. Second operand 9 states and 109 transitions. [2024-06-27 19:59:11,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 94 transitions, 849 flow [2024-06-27 19:59:11,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 804 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:11,706 INFO L231 Difference]: Finished difference. Result has 95 places, 80 transitions, 635 flow [2024-06-27 19:59:11,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=95, PETRI_TRANSITIONS=80} [2024-06-27 19:59:11,707 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2024-06-27 19:59:11,707 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 80 transitions, 635 flow [2024-06-27 19:59:11,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:11,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:11,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:11,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:59:11,707 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 19:59:11,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1785489276, now seen corresponding path program 3 times [2024-06-27 19:59:11,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:11,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077149759] [2024-06-27 19:59:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:11,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:12,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:12,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:12,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077149759] [2024-06-27 19:59:12,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077149759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:12,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:12,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:59:12,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247127621] [2024-06-27 19:59:12,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:12,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:59:12,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:12,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:59:12,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:59:12,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:12,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 80 transitions, 635 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:12,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:12,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:12,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:12,616 INFO L124 PetriNetUnfolderBase]: 210/402 cut-off events. [2024-06-27 19:59:12,616 INFO L125 PetriNetUnfolderBase]: For 6531/6531 co-relation queries the response was YES. [2024-06-27 19:59:12,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2169 conditions, 402 events. 210/402 cut-off events. For 6531/6531 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1649 event pairs, 29 based on Foata normal form. 2/404 useless extension candidates. Maximal degree in co-relation 2123. Up to 349 conditions per place. [2024-06-27 19:59:12,619 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 79 selfloop transitions, 13 changer transitions 0/95 dead transitions. [2024-06-27 19:59:12,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 95 transitions, 892 flow [2024-06-27 19:59:12,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:12,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:12,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 19:59:12,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:59:12,625 INFO L175 Difference]: Start difference. First operand has 95 places, 80 transitions, 635 flow. Second operand 8 states and 96 transitions. [2024-06-27 19:59:12,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 95 transitions, 892 flow [2024-06-27 19:59:12,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 825 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:12,634 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 645 flow [2024-06-27 19:59:12,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=645, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-06-27 19:59:12,635 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 68 predicate places. [2024-06-27 19:59:12,635 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 645 flow [2024-06-27 19:59:12,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:12,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:12,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:12,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:59:12,635 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:12,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:12,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1785311336, now seen corresponding path program 2 times [2024-06-27 19:59:12,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:12,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890253597] [2024-06-27 19:59:12,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:12,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:13,562 INFO 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 19:59:13,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:13,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890253597] [2024-06-27 19:59:13,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890253597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:13,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:13,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:13,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848830762] [2024-06-27 19:59:13,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:13,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:13,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:13,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:13,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:13,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:13,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 645 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:13,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:13,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:13,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:13,962 INFO L124 PetriNetUnfolderBase]: 228/437 cut-off events. [2024-06-27 19:59:13,962 INFO L125 PetriNetUnfolderBase]: For 8188/8188 co-relation queries the response was YES. [2024-06-27 19:59:13,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2479 conditions, 437 events. 228/437 cut-off events. For 8188/8188 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1854 event pairs, 29 based on Foata normal form. 1/438 useless extension candidates. Maximal degree in co-relation 2431. Up to 345 conditions per place. [2024-06-27 19:59:13,966 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 77 selfloop transitions, 25 changer transitions 0/105 dead transitions. [2024-06-27 19:59:13,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 105 transitions, 1105 flow [2024-06-27 19:59:13,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:13,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 19:59:13,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 19:59:13,967 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 645 flow. Second operand 9 states and 114 transitions. [2024-06-27 19:59:13,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 105 transitions, 1105 flow [2024-06-27 19:59:13,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 105 transitions, 1055 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 19:59:13,977 INFO L231 Difference]: Finished difference. Result has 102 places, 90 transitions, 781 flow [2024-06-27 19:59:13,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=781, PETRI_PLACES=102, PETRI_TRANSITIONS=90} [2024-06-27 19:59:13,978 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 73 predicate places. [2024-06-27 19:59:13,978 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 90 transitions, 781 flow [2024-06-27 19:59:13,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:13,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:13,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:13,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:59:13,978 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 19:59:13,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:13,979 INFO L85 PathProgramCache]: Analyzing trace with hash 472485696, now seen corresponding path program 3 times [2024-06-27 19:59:13,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:13,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877795496] [2024-06-27 19:59:13,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:13,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:14,814 INFO 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 19:59:14,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:14,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877795496] [2024-06-27 19:59:14,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877795496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:14,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:14,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:14,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826365408] [2024-06-27 19:59:14,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:14,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:14,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:14,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:14,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:14,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:14,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 781 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:14,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:14,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:14,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:15,169 INFO L124 PetriNetUnfolderBase]: 224/431 cut-off events. [2024-06-27 19:59:15,169 INFO L125 PetriNetUnfolderBase]: For 8535/8535 co-relation queries the response was YES. [2024-06-27 19:59:15,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2483 conditions, 431 events. 224/431 cut-off events. For 8535/8535 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1824 event pairs, 29 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 2433. Up to 342 conditions per place. [2024-06-27 19:59:15,172 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 77 selfloop transitions, 24 changer transitions 0/104 dead transitions. [2024-06-27 19:59:15,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 104 transitions, 1079 flow [2024-06-27 19:59:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:15,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 19:59:15,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-27 19:59:15,173 INFO L175 Difference]: Start difference. First operand has 102 places, 90 transitions, 781 flow. Second operand 9 states and 112 transitions. [2024-06-27 19:59:15,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 104 transitions, 1079 flow [2024-06-27 19:59:15,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 104 transitions, 998 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-27 19:59:15,184 INFO L231 Difference]: Finished difference. Result has 107 places, 90 transitions, 754 flow [2024-06-27 19:59:15,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=754, PETRI_PLACES=107, PETRI_TRANSITIONS=90} [2024-06-27 19:59:15,185 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-06-27 19:59:15,185 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 90 transitions, 754 flow [2024-06-27 19:59:15,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:15,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:15,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:15,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:59:15,185 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 19:59:15,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:15,185 INFO L85 PathProgramCache]: Analyzing trace with hash 137762672, now seen corresponding path program 4 times [2024-06-27 19:59:15,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:15,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589546311] [2024-06-27 19:59:15,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:15,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:15,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:15,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:15,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:15,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589546311] [2024-06-27 19:59:15,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589546311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:15,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:15,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:59:15,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632762603] [2024-06-27 19:59:15,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:15,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:59:15,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:15,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:59:15,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:59:15,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:15,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 90 transitions, 754 flow. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:15,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:15,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:15,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:16,138 INFO L124 PetriNetUnfolderBase]: 221/427 cut-off events. [2024-06-27 19:59:16,138 INFO L125 PetriNetUnfolderBase]: For 7954/7956 co-relation queries the response was YES. [2024-06-27 19:59:16,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 427 events. 221/427 cut-off events. For 7954/7956 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1815 event pairs, 31 based on Foata normal form. 4/431 useless extension candidates. Maximal degree in co-relation 2349. Up to 358 conditions per place. [2024-06-27 19:59:16,141 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 82 selfloop transitions, 17 changer transitions 0/102 dead transitions. [2024-06-27 19:59:16,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 102 transitions, 1007 flow [2024-06-27 19:59:16,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:59:16,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:59:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 19:59:16,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:59:16,143 INFO L175 Difference]: Start difference. First operand has 107 places, 90 transitions, 754 flow. Second operand 8 states and 96 transitions. [2024-06-27 19:59:16,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 102 transitions, 1007 flow [2024-06-27 19:59:16,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 102 transitions, 961 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:16,154 INFO L231 Difference]: Finished difference. Result has 109 places, 92 transitions, 778 flow [2024-06-27 19:59:16,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=778, PETRI_PLACES=109, PETRI_TRANSITIONS=92} [2024-06-27 19:59:16,154 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 80 predicate places. [2024-06-27 19:59:16,154 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 92 transitions, 778 flow [2024-06-27 19:59:16,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:16,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:16,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:16,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:59:16,155 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 19:59:16,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:16,155 INFO L85 PathProgramCache]: Analyzing trace with hash 934361350, now seen corresponding path program 4 times [2024-06-27 19:59:16,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:16,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716760757] [2024-06-27 19:59:16,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:16,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:16,940 INFO 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 19:59:16,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:16,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716760757] [2024-06-27 19:59:16,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716760757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:16,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:16,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:16,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193947730] [2024-06-27 19:59:16,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:16,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:16,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:16,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:16,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:17,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:17,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 92 transitions, 778 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:17,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:17,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:17,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:17,228 INFO L124 PetriNetUnfolderBase]: 237/457 cut-off events. [2024-06-27 19:59:17,228 INFO L125 PetriNetUnfolderBase]: For 9939/9941 co-relation queries the response was YES. [2024-06-27 19:59:17,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2701 conditions, 457 events. 237/457 cut-off events. For 9939/9941 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1983 event pairs, 31 based on Foata normal form. 4/461 useless extension candidates. Maximal degree in co-relation 2647. Up to 352 conditions per place. [2024-06-27 19:59:17,231 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 79 selfloop transitions, 27 changer transitions 0/109 dead transitions. [2024-06-27 19:59:17,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 109 transitions, 1178 flow [2024-06-27 19:59:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:17,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:17,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 19:59:17,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-27 19:59:17,232 INFO L175 Difference]: Start difference. First operand has 109 places, 92 transitions, 778 flow. Second operand 9 states and 112 transitions. [2024-06-27 19:59:17,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 109 transitions, 1178 flow [2024-06-27 19:59:17,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 109 transitions, 1098 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:17,245 INFO L231 Difference]: Finished difference. Result has 112 places, 97 transitions, 858 flow [2024-06-27 19:59:17,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=858, PETRI_PLACES=112, PETRI_TRANSITIONS=97} [2024-06-27 19:59:17,245 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-06-27 19:59:17,246 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 97 transitions, 858 flow [2024-06-27 19:59:17,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:17,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:17,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:17,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:59:17,246 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 19:59:17,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:17,246 INFO L85 PathProgramCache]: Analyzing trace with hash 366078912, now seen corresponding path program 5 times [2024-06-27 19:59:17,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:17,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964344735] [2024-06-27 19:59:17,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:17,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:18,110 INFO 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 19:59:18,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:18,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964344735] [2024-06-27 19:59:18,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964344735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:18,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:18,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:18,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005471233] [2024-06-27 19:59:18,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:18,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:18,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:18,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:18,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:18,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:18,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 97 transitions, 858 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:18,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:18,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:18,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:18,517 INFO L124 PetriNetUnfolderBase]: 248/477 cut-off events. [2024-06-27 19:59:18,517 INFO L125 PetriNetUnfolderBase]: For 11658/11660 co-relation queries the response was YES. [2024-06-27 19:59:18,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2960 conditions, 477 events. 248/477 cut-off events. For 11658/11660 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2096 event pairs, 32 based on Foata normal form. 2/479 useless extension candidates. Maximal degree in co-relation 2905. Up to 406 conditions per place. [2024-06-27 19:59:18,520 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 92 selfloop transitions, 18 changer transitions 0/113 dead transitions. [2024-06-27 19:59:18,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 113 transitions, 1274 flow [2024-06-27 19:59:18,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:18,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:18,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 19:59:18,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:59:18,523 INFO L175 Difference]: Start difference. First operand has 112 places, 97 transitions, 858 flow. Second operand 9 states and 108 transitions. [2024-06-27 19:59:18,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 113 transitions, 1274 flow [2024-06-27 19:59:18,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 113 transitions, 1196 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 19:59:18,539 INFO L231 Difference]: Finished difference. Result has 116 places, 102 transitions, 932 flow [2024-06-27 19:59:18,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=932, PETRI_PLACES=116, PETRI_TRANSITIONS=102} [2024-06-27 19:59:18,540 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2024-06-27 19:59:18,540 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 102 transitions, 932 flow [2024-06-27 19:59:18,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:18,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:18,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:18,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:59:18,540 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 19:59:18,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:18,541 INFO L85 PathProgramCache]: Analyzing trace with hash 365848272, now seen corresponding path program 6 times [2024-06-27 19:59:18,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:18,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247688857] [2024-06-27 19:59:18,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:18,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:19,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:19,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247688857] [2024-06-27 19:59:19,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247688857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:19,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:19,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:19,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736420397] [2024-06-27 19:59:19,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:19,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:19,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:19,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:19,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:19,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:19,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 102 transitions, 932 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:19,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:19,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:19,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:19,614 INFO L124 PetriNetUnfolderBase]: 251/484 cut-off events. [2024-06-27 19:59:19,615 INFO L125 PetriNetUnfolderBase]: For 11797/11799 co-relation queries the response was YES. [2024-06-27 19:59:19,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3031 conditions, 484 events. 251/484 cut-off events. For 11797/11799 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2151 event pairs, 31 based on Foata normal form. 3/487 useless extension candidates. Maximal degree in co-relation 2974. Up to 342 conditions per place. [2024-06-27 19:59:19,618 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 85 selfloop transitions, 42 changer transitions 0/130 dead transitions. [2024-06-27 19:59:19,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 130 transitions, 1579 flow [2024-06-27 19:59:19,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:19,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:19,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 19:59:19,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 19:59:19,619 INFO L175 Difference]: Start difference. First operand has 116 places, 102 transitions, 932 flow. Second operand 9 states and 114 transitions. [2024-06-27 19:59:19,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 130 transitions, 1579 flow [2024-06-27 19:59:19,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 130 transitions, 1472 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-27 19:59:19,637 INFO L231 Difference]: Finished difference. Result has 123 places, 115 transitions, 1185 flow [2024-06-27 19:59:19,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=855, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1185, PETRI_PLACES=123, PETRI_TRANSITIONS=115} [2024-06-27 19:59:19,637 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 94 predicate places. [2024-06-27 19:59:19,638 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 115 transitions, 1185 flow [2024-06-27 19:59:19,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:19,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:19,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:19,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:59:19,638 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 19:59:19,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash 137940612, now seen corresponding path program 7 times [2024-06-27 19:59:19,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:19,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787721598] [2024-06-27 19:59:19,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:19,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:19,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:20,441 INFO 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 19:59:20,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:20,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787721598] [2024-06-27 19:59:20,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787721598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:20,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:20,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:20,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778957685] [2024-06-27 19:59:20,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:20,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:20,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:20,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:20,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:20,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:20,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 115 transitions, 1185 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:20,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:20,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:20,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:20,668 INFO L124 PetriNetUnfolderBase]: 249/481 cut-off events. [2024-06-27 19:59:20,669 INFO L125 PetriNetUnfolderBase]: For 11746/11748 co-relation queries the response was YES. [2024-06-27 19:59:20,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3092 conditions, 481 events. 249/481 cut-off events. For 11746/11748 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2135 event pairs, 31 based on Foata normal form. 3/484 useless extension candidates. Maximal degree in co-relation 3030. Up to 374 conditions per place. [2024-06-27 19:59:20,671 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 94 selfloop transitions, 31 changer transitions 0/128 dead transitions. [2024-06-27 19:59:20,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 128 transitions, 1559 flow [2024-06-27 19:59:20,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 19:59:20,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185185185185185 [2024-06-27 19:59:20,673 INFO L175 Difference]: Start difference. First operand has 123 places, 115 transitions, 1185 flow. Second operand 9 states and 113 transitions. [2024-06-27 19:59:20,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 128 transitions, 1559 flow [2024-06-27 19:59:20,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 128 transitions, 1447 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-27 19:59:20,695 INFO L231 Difference]: Finished difference. Result has 129 places, 116 transitions, 1163 flow [2024-06-27 19:59:20,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1163, PETRI_PLACES=129, PETRI_TRANSITIONS=116} [2024-06-27 19:59:20,695 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 100 predicate places. [2024-06-27 19:59:20,695 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 116 transitions, 1163 flow [2024-06-27 19:59:20,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:20,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:20,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:20,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:59:20,696 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 19:59:20,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:20,696 INFO L85 PathProgramCache]: Analyzing trace with hash 365841762, now seen corresponding path program 8 times [2024-06-27 19:59:20,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:20,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108970345] [2024-06-27 19:59:20,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:20,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:21,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:21,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108970345] [2024-06-27 19:59:21,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108970345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:21,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:21,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:21,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052100524] [2024-06-27 19:59:21,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:21,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:21,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:21,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:21,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:21,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:21,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 116 transitions, 1163 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:21,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:21,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:21,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:22,007 INFO L124 PetriNetUnfolderBase]: 257/496 cut-off events. [2024-06-27 19:59:22,007 INFO L125 PetriNetUnfolderBase]: For 12790/12792 co-relation queries the response was YES. [2024-06-27 19:59:22,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3254 conditions, 496 events. 257/496 cut-off events. For 12790/12792 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2208 event pairs, 31 based on Foata normal form. 3/499 useless extension candidates. Maximal degree in co-relation 3190. Up to 296 conditions per place. [2024-06-27 19:59:22,010 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 69 selfloop transitions, 62 changer transitions 0/134 dead transitions. [2024-06-27 19:59:22,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 134 transitions, 1762 flow [2024-06-27 19:59:22,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:22,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:22,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 19:59:22,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43703703703703706 [2024-06-27 19:59:22,012 INFO L175 Difference]: Start difference. First operand has 129 places, 116 transitions, 1163 flow. Second operand 9 states and 118 transitions. [2024-06-27 19:59:22,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 134 transitions, 1762 flow [2024-06-27 19:59:22,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 134 transitions, 1657 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:22,035 INFO L231 Difference]: Finished difference. Result has 132 places, 121 transitions, 1310 flow [2024-06-27 19:59:22,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1310, PETRI_PLACES=132, PETRI_TRANSITIONS=121} [2024-06-27 19:59:22,036 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 103 predicate places. [2024-06-27 19:59:22,036 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 121 transitions, 1310 flow [2024-06-27 19:59:22,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:22,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:22,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:22,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:59:22,036 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 19:59:22,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:22,037 INFO L85 PathProgramCache]: Analyzing trace with hash -736197354, now seen corresponding path program 1 times [2024-06-27 19:59:22,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:22,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600765915] [2024-06-27 19:59:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:22,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:22,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:22,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600765915] [2024-06-27 19:59:22,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600765915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:22,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:22,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:22,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121219846] [2024-06-27 19:59:22,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:22,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:22,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:22,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:22,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:22,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:22,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 1310 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:22,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:22,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:22,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:23,081 INFO L124 PetriNetUnfolderBase]: 261/503 cut-off events. [2024-06-27 19:59:23,081 INFO L125 PetriNetUnfolderBase]: For 14224/14224 co-relation queries the response was YES. [2024-06-27 19:59:23,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 503 events. 261/503 cut-off events. For 14224/14224 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2250 event pairs, 10 based on Foata normal form. 2/505 useless extension candidates. Maximal degree in co-relation 3297. Up to 392 conditions per place. [2024-06-27 19:59:23,084 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 119 selfloop transitions, 17 changer transitions 0/139 dead transitions. [2024-06-27 19:59:23,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 139 transitions, 1642 flow [2024-06-27 19:59:23,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:23,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 19:59:23,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:59:23,085 INFO L175 Difference]: Start difference. First operand has 132 places, 121 transitions, 1310 flow. Second operand 9 states and 108 transitions. [2024-06-27 19:59:23,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 139 transitions, 1642 flow [2024-06-27 19:59:23,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 139 transitions, 1522 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:23,110 INFO L231 Difference]: Finished difference. Result has 135 places, 122 transitions, 1244 flow [2024-06-27 19:59:23,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1244, PETRI_PLACES=135, PETRI_TRANSITIONS=122} [2024-06-27 19:59:23,111 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2024-06-27 19:59:23,111 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 122 transitions, 1244 flow [2024-06-27 19:59:23,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:23,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:23,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:23,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:59:23,111 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 19:59:23,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:23,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1817440706, now seen corresponding path program 2 times [2024-06-27 19:59:23,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:23,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318590691] [2024-06-27 19:59:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:23,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:24,001 INFO 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 19:59:24,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:24,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318590691] [2024-06-27 19:59:24,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318590691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:24,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:24,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:24,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136490518] [2024-06-27 19:59:24,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:24,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:24,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:24,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:24,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:24,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:24,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 122 transitions, 1244 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:24,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:24,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:24,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:24,366 INFO L124 PetriNetUnfolderBase]: 265/511 cut-off events. [2024-06-27 19:59:24,366 INFO L125 PetriNetUnfolderBase]: For 14086/14086 co-relation queries the response was YES. [2024-06-27 19:59:24,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3290 conditions, 511 events. 265/511 cut-off events. For 14086/14086 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2311 event pairs, 28 based on Foata normal form. 2/513 useless extension candidates. Maximal degree in co-relation 3225. Up to 421 conditions per place. [2024-06-27 19:59:24,369 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 114 selfloop transitions, 21 changer transitions 0/138 dead transitions. [2024-06-27 19:59:24,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 138 transitions, 1572 flow [2024-06-27 19:59:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:24,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 19:59:24,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-27 19:59:24,370 INFO L175 Difference]: Start difference. First operand has 135 places, 122 transitions, 1244 flow. Second operand 9 states and 109 transitions. [2024-06-27 19:59:24,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 138 transitions, 1572 flow [2024-06-27 19:59:24,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 138 transitions, 1528 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:24,397 INFO L231 Difference]: Finished difference. Result has 137 places, 123 transitions, 1264 flow [2024-06-27 19:59:24,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1200, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1264, PETRI_PLACES=137, PETRI_TRANSITIONS=123} [2024-06-27 19:59:24,398 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 108 predicate places. [2024-06-27 19:59:24,398 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 123 transitions, 1264 flow [2024-06-27 19:59:24,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:24,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:24,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:24,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:59:24,399 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 19:59:24,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:24,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1118657464, now seen corresponding path program 3 times [2024-06-27 19:59:24,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:24,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140381396] [2024-06-27 19:59:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:24,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:25,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:25,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140381396] [2024-06-27 19:59:25,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140381396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:25,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:25,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:25,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934392655] [2024-06-27 19:59:25,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:25,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:25,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:25,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:25,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:25,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:25,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 123 transitions, 1264 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:25,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:25,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:25,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:25,528 INFO L124 PetriNetUnfolderBase]: 269/519 cut-off events. [2024-06-27 19:59:25,528 INFO L125 PetriNetUnfolderBase]: For 15189/15189 co-relation queries the response was YES. [2024-06-27 19:59:25,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3353 conditions, 519 events. 269/519 cut-off events. For 15189/15189 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2363 event pairs, 26 based on Foata normal form. 2/521 useless extension candidates. Maximal degree in co-relation 3287. Up to 424 conditions per place. [2024-06-27 19:59:25,531 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 117 selfloop transitions, 20 changer transitions 0/140 dead transitions. [2024-06-27 19:59:25,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 140 transitions, 1600 flow [2024-06-27 19:59:25,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:25,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-27 19:59:25,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-06-27 19:59:25,532 INFO L175 Difference]: Start difference. First operand has 137 places, 123 transitions, 1264 flow. Second operand 9 states and 109 transitions. [2024-06-27 19:59:25,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 140 transitions, 1600 flow [2024-06-27 19:59:25,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 140 transitions, 1546 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:25,572 INFO L231 Difference]: Finished difference. Result has 139 places, 124 transitions, 1274 flow [2024-06-27 19:59:25,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1274, PETRI_PLACES=139, PETRI_TRANSITIONS=124} [2024-06-27 19:59:25,572 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 110 predicate places. [2024-06-27 19:59:25,573 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 124 transitions, 1274 flow [2024-06-27 19:59:25,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:25,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:25,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:25,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:59:25,573 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 19:59:25,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:25,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1205503096, now seen corresponding path program 1 times [2024-06-27 19:59:25,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:25,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600172498] [2024-06-27 19:59:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:25,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:26,634 INFO 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 19:59:26,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:26,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600172498] [2024-06-27 19:59:26,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600172498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:26,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:26,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:26,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846893258] [2024-06-27 19:59:26,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:26,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:26,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:26,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:26,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:26,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:26,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 124 transitions, 1274 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:26,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:26,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:26,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:27,022 INFO L124 PetriNetUnfolderBase]: 267/516 cut-off events. [2024-06-27 19:59:27,022 INFO L125 PetriNetUnfolderBase]: For 14659/14659 co-relation queries the response was YES. [2024-06-27 19:59:27,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 516 events. 267/516 cut-off events. For 14659/14659 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2360 event pairs, 27 based on Foata normal form. 1/517 useless extension candidates. Maximal degree in co-relation 3231. Up to 426 conditions per place. [2024-06-27 19:59:27,025 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 114 selfloop transitions, 24 changer transitions 0/141 dead transitions. [2024-06-27 19:59:27,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 141 transitions, 1634 flow [2024-06-27 19:59:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:27,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:27,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 19:59:27,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-27 19:59:27,026 INFO L175 Difference]: Start difference. First operand has 139 places, 124 transitions, 1274 flow. Second operand 10 states and 119 transitions. [2024-06-27 19:59:27,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 141 transitions, 1634 flow [2024-06-27 19:59:27,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 141 transitions, 1580 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:27,055 INFO L231 Difference]: Finished difference. Result has 142 places, 126 transitions, 1319 flow [2024-06-27 19:59:27,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1319, PETRI_PLACES=142, PETRI_TRANSITIONS=126} [2024-06-27 19:59:27,055 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 113 predicate places. [2024-06-27 19:59:27,055 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 126 transitions, 1319 flow [2024-06-27 19:59:27,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:27,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:27,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:27,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:59:27,056 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 19:59:27,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:27,056 INFO L85 PathProgramCache]: Analyzing trace with hash 484411968, now seen corresponding path program 4 times [2024-06-27 19:59:27,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:27,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451241133] [2024-06-27 19:59:27,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:27,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:27,885 INFO 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 19:59:27,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:27,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451241133] [2024-06-27 19:59:27,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451241133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:27,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:27,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:27,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346700830] [2024-06-27 19:59:27,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:27,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:27,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:27,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:27,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:27,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:27,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 126 transitions, 1319 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:27,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:27,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:27,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:28,192 INFO L124 PetriNetUnfolderBase]: 271/524 cut-off events. [2024-06-27 19:59:28,192 INFO L125 PetriNetUnfolderBase]: For 15959/15959 co-relation queries the response was YES. [2024-06-27 19:59:28,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 524 events. 271/524 cut-off events. For 15959/15959 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2407 event pairs, 29 based on Foata normal form. 2/526 useless extension candidates. Maximal degree in co-relation 3294. Up to 452 conditions per place. [2024-06-27 19:59:28,195 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 123 selfloop transitions, 15 changer transitions 0/141 dead transitions. [2024-06-27 19:59:28,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 141 transitions, 1660 flow [2024-06-27 19:59:28,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:28,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:28,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 19:59:28,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2024-06-27 19:59:28,196 INFO L175 Difference]: Start difference. First operand has 142 places, 126 transitions, 1319 flow. Second operand 9 states and 106 transitions. [2024-06-27 19:59:28,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 141 transitions, 1660 flow [2024-06-27 19:59:28,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 141 transitions, 1577 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:28,225 INFO L231 Difference]: Finished difference. Result has 144 places, 128 transitions, 1306 flow [2024-06-27 19:59:28,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1306, PETRI_PLACES=144, PETRI_TRANSITIONS=128} [2024-06-27 19:59:28,225 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 115 predicate places. [2024-06-27 19:59:28,225 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 128 transitions, 1306 flow [2024-06-27 19:59:28,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:28,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:28,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:28,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:59:28,225 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 19:59:28,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:28,226 INFO L85 PathProgramCache]: Analyzing trace with hash 639221914, now seen corresponding path program 5 times [2024-06-27 19:59:28,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:28,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930628509] [2024-06-27 19:59:28,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:28,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:29,131 INFO 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 19:59:29,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:29,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930628509] [2024-06-27 19:59:29,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930628509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:29,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:29,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:29,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839219895] [2024-06-27 19:59:29,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:29,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:29,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:29,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:29,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:29,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:29,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 128 transitions, 1306 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:29,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:29,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:29,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:29,474 INFO L124 PetriNetUnfolderBase]: 275/531 cut-off events. [2024-06-27 19:59:29,474 INFO L125 PetriNetUnfolderBase]: For 16907/16909 co-relation queries the response was YES. [2024-06-27 19:59:29,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3397 conditions, 531 events. 275/531 cut-off events. For 16907/16909 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2451 event pairs, 29 based on Foata normal form. 2/533 useless extension candidates. Maximal degree in co-relation 3327. Up to 431 conditions per place. [2024-06-27 19:59:29,477 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 117 selfloop transitions, 22 changer transitions 0/142 dead transitions. [2024-06-27 19:59:29,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 142 transitions, 1638 flow [2024-06-27 19:59:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 19:59:29,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:59:29,478 INFO L175 Difference]: Start difference. First operand has 144 places, 128 transitions, 1306 flow. Second operand 9 states and 108 transitions. [2024-06-27 19:59:29,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 142 transitions, 1638 flow [2024-06-27 19:59:29,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 142 transitions, 1595 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:29,509 INFO L231 Difference]: Finished difference. Result has 147 places, 129 transitions, 1335 flow [2024-06-27 19:59:29,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1335, PETRI_PLACES=147, PETRI_TRANSITIONS=129} [2024-06-27 19:59:29,510 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 118 predicate places. [2024-06-27 19:59:29,510 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 129 transitions, 1335 flow [2024-06-27 19:59:29,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:29,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:29,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:29,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:59:29,510 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 19:59:29,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:29,511 INFO L85 PathProgramCache]: Analyzing trace with hash 489918498, now seen corresponding path program 6 times [2024-06-27 19:59:29,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:29,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684769333] [2024-06-27 19:59:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:29,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:30,341 INFO 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 19:59:30,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:30,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684769333] [2024-06-27 19:59:30,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684769333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:30,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:30,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:30,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080089431] [2024-06-27 19:59:30,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:30,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:30,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:30,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:30,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:30,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:30,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 129 transitions, 1335 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:30,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:30,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:30,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:30,704 INFO L124 PetriNetUnfolderBase]: 279/540 cut-off events. [2024-06-27 19:59:30,704 INFO L125 PetriNetUnfolderBase]: For 17882/17882 co-relation queries the response was YES. [2024-06-27 19:59:30,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3473 conditions, 540 events. 279/540 cut-off events. For 17882/17882 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2531 event pairs, 29 based on Foata normal form. 2/542 useless extension candidates. Maximal degree in co-relation 3402. Up to 462 conditions per place. [2024-06-27 19:59:30,707 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 122 selfloop transitions, 18 changer transitions 0/143 dead transitions. [2024-06-27 19:59:30,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 143 transitions, 1675 flow [2024-06-27 19:59:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:30,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:30,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 19:59:30,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:59:30,713 INFO L175 Difference]: Start difference. First operand has 147 places, 129 transitions, 1335 flow. Second operand 9 states and 108 transitions. [2024-06-27 19:59:30,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 143 transitions, 1675 flow [2024-06-27 19:59:30,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 143 transitions, 1613 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:30,747 INFO L231 Difference]: Finished difference. Result has 149 places, 130 transitions, 1339 flow [2024-06-27 19:59:30,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1339, PETRI_PLACES=149, PETRI_TRANSITIONS=130} [2024-06-27 19:59:30,748 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 120 predicate places. [2024-06-27 19:59:30,748 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 130 transitions, 1339 flow [2024-06-27 19:59:30,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:30,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:30,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:30,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:59:30,748 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 19:59:30,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:30,749 INFO L85 PathProgramCache]: Analyzing trace with hash 644939926, now seen corresponding path program 2 times [2024-06-27 19:59:30,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:30,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153394048] [2024-06-27 19:59:30,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:30,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:31,607 INFO 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 19:59:31,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:31,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153394048] [2024-06-27 19:59:31,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153394048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:31,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:31,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:31,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536357586] [2024-06-27 19:59:31,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:31,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:31,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:31,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:31,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:31,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:31,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 130 transitions, 1339 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 19:59:31,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:31,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:31,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:31,922 INFO L124 PetriNetUnfolderBase]: 282/545 cut-off events. [2024-06-27 19:59:31,922 INFO L125 PetriNetUnfolderBase]: For 17949/17949 co-relation queries the response was YES. [2024-06-27 19:59:31,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3502 conditions, 545 events. 282/545 cut-off events. For 17949/17949 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2564 event pairs, 29 based on Foata normal form. 1/546 useless extension candidates. Maximal degree in co-relation 3430. Up to 445 conditions per place. [2024-06-27 19:59:31,926 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 115 selfloop transitions, 28 changer transitions 0/146 dead transitions. [2024-06-27 19:59:31,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 146 transitions, 1796 flow [2024-06-27 19:59:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:31,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-27 19:59:31,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-06-27 19:59:31,933 INFO L175 Difference]: Start difference. First operand has 149 places, 130 transitions, 1339 flow. Second operand 9 states and 112 transitions. [2024-06-27 19:59:31,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 146 transitions, 1796 flow [2024-06-27 19:59:31,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 146 transitions, 1740 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:31,969 INFO L231 Difference]: Finished difference. Result has 151 places, 132 transitions, 1389 flow [2024-06-27 19:59:31,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1389, PETRI_PLACES=151, PETRI_TRANSITIONS=132} [2024-06-27 19:59:31,970 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 122 predicate places. [2024-06-27 19:59:31,970 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 132 transitions, 1389 flow [2024-06-27 19:59:31,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 19:59:31,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:31,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:31,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:59:31,970 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:31,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:31,971 INFO L85 PathProgramCache]: Analyzing trace with hash 756038904, now seen corresponding path program 3 times [2024-06-27 19:59:31,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:31,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182474254] [2024-06-27 19:59:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:31,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:33,197 INFO 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 19:59:33,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:33,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182474254] [2024-06-27 19:59:33,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182474254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:33,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:33,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:33,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749034944] [2024-06-27 19:59:33,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:33,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:33,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:33,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:33,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:33,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:33,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 132 transitions, 1389 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:33,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:33,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:33,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:33,696 INFO L124 PetriNetUnfolderBase]: 280/542 cut-off events. [2024-06-27 19:59:33,696 INFO L125 PetriNetUnfolderBase]: For 17807/17807 co-relation queries the response was YES. [2024-06-27 19:59:33,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3448 conditions, 542 events. 280/542 cut-off events. For 17807/17807 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2549 event pairs, 29 based on Foata normal form. 1/543 useless extension candidates. Maximal degree in co-relation 3375. Up to 443 conditions per place. [2024-06-27 19:59:33,700 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 114 selfloop transitions, 29 changer transitions 0/146 dead transitions. [2024-06-27 19:59:33,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 146 transitions, 1726 flow [2024-06-27 19:59:33,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:33,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 19:59:33,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-06-27 19:59:33,702 INFO L175 Difference]: Start difference. First operand has 151 places, 132 transitions, 1389 flow. Second operand 10 states and 122 transitions. [2024-06-27 19:59:33,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 146 transitions, 1726 flow [2024-06-27 19:59:33,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 146 transitions, 1621 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:33,737 INFO L231 Difference]: Finished difference. Result has 154 places, 132 transitions, 1347 flow [2024-06-27 19:59:33,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1347, PETRI_PLACES=154, PETRI_TRANSITIONS=132} [2024-06-27 19:59:33,738 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2024-06-27 19:59:33,738 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 132 transitions, 1347 flow [2024-06-27 19:59:33,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:33,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:33,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:33,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:59:33,739 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:33,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:33,739 INFO L85 PathProgramCache]: Analyzing trace with hash 490133979, now seen corresponding path program 1 times [2024-06-27 19:59:33,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:33,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859520558] [2024-06-27 19:59:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:33,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:33,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:34,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:34,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859520558] [2024-06-27 19:59:34,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859520558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:34,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:34,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:34,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735603540] [2024-06-27 19:59:34,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:34,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:34,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:34,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:34,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 132 transitions, 1347 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 19:59:34,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:34,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:34,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:34,826 INFO L124 PetriNetUnfolderBase]: 300/586 cut-off events. [2024-06-27 19:59:34,827 INFO L125 PetriNetUnfolderBase]: For 26249/26249 co-relation queries the response was YES. [2024-06-27 19:59:34,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3634 conditions, 586 events. 300/586 cut-off events. For 26249/26249 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2820 event pairs, 33 based on Foata normal form. 12/598 useless extension candidates. Maximal degree in co-relation 3561. Up to 457 conditions per place. [2024-06-27 19:59:34,835 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 124 selfloop transitions, 17 changer transitions 7/151 dead transitions. [2024-06-27 19:59:34,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 151 transitions, 1778 flow [2024-06-27 19:59:34,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 19:59:34,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 19:59:34,836 INFO L175 Difference]: Start difference. First operand has 154 places, 132 transitions, 1347 flow. Second operand 9 states and 114 transitions. [2024-06-27 19:59:34,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 151 transitions, 1778 flow [2024-06-27 19:59:34,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 151 transitions, 1704 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:34,874 INFO L231 Difference]: Finished difference. Result has 154 places, 130 transitions, 1303 flow [2024-06-27 19:59:34,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1303, PETRI_PLACES=154, PETRI_TRANSITIONS=130} [2024-06-27 19:59:34,874 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2024-06-27 19:59:34,874 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 130 transitions, 1303 flow [2024-06-27 19:59:34,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 19:59:34,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:34,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:34,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:59:34,875 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:34,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:34,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1329764356, now seen corresponding path program 7 times [2024-06-27 19:59:34,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:34,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299514755] [2024-06-27 19:59:34,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:34,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:35,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:35,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:35,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299514755] [2024-06-27 19:59:35,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299514755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:35,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:35,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:35,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551894514] [2024-06-27 19:59:35,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:35,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:35,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:35,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:35,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:35,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:35,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 130 transitions, 1303 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:35,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:35,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:35,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:36,025 INFO L124 PetriNetUnfolderBase]: 280/547 cut-off events. [2024-06-27 19:59:36,025 INFO L125 PetriNetUnfolderBase]: For 19490/19492 co-relation queries the response was YES. [2024-06-27 19:59:36,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3438 conditions, 547 events. 280/547 cut-off events. For 19490/19492 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2593 event pairs, 32 based on Foata normal form. 4/551 useless extension candidates. Maximal degree in co-relation 3364. Up to 459 conditions per place. [2024-06-27 19:59:36,032 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 118 selfloop transitions, 21 changer transitions 0/142 dead transitions. [2024-06-27 19:59:36,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 142 transitions, 1637 flow [2024-06-27 19:59:36,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:36,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:36,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 19:59:36,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:59:36,033 INFO L175 Difference]: Start difference. First operand has 154 places, 130 transitions, 1303 flow. Second operand 9 states and 108 transitions. [2024-06-27 19:59:36,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 142 transitions, 1637 flow [2024-06-27 19:59:36,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 142 transitions, 1585 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:36,076 INFO L231 Difference]: Finished difference. Result has 156 places, 131 transitions, 1325 flow [2024-06-27 19:59:36,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1325, PETRI_PLACES=156, PETRI_TRANSITIONS=131} [2024-06-27 19:59:36,077 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 127 predicate places. [2024-06-27 19:59:36,077 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 131 transitions, 1325 flow [2024-06-27 19:59:36,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:36,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:36,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:36,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:59:36,079 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:36,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:36,079 INFO L85 PathProgramCache]: Analyzing trace with hash -24175638, now seen corresponding path program 8 times [2024-06-27 19:59:36,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:36,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999693345] [2024-06-27 19:59:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:36,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:36,973 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 19:59:36,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:36,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999693345] [2024-06-27 19:59:36,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999693345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:36,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:36,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:36,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785188313] [2024-06-27 19:59:36,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:36,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:36,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:36,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:36,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:37,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:37,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 131 transitions, 1325 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:37,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:37,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:37,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:37,299 INFO L124 PetriNetUnfolderBase]: 284/555 cut-off events. [2024-06-27 19:59:37,299 INFO L125 PetriNetUnfolderBase]: For 20416/20418 co-relation queries the response was YES. [2024-06-27 19:59:37,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3502 conditions, 555 events. 284/555 cut-off events. For 20416/20418 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2652 event pairs, 34 based on Foata normal form. 4/559 useless extension candidates. Maximal degree in co-relation 3427. Up to 473 conditions per place. [2024-06-27 19:59:37,302 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 122 selfloop transitions, 19 changer transitions 0/144 dead transitions. [2024-06-27 19:59:37,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 144 transitions, 1676 flow [2024-06-27 19:59:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:37,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:37,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 19:59:37,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2024-06-27 19:59:37,303 INFO L175 Difference]: Start difference. First operand has 156 places, 131 transitions, 1325 flow. Second operand 9 states and 106 transitions. [2024-06-27 19:59:37,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 144 transitions, 1676 flow [2024-06-27 19:59:37,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 144 transitions, 1610 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:37,342 INFO L231 Difference]: Finished difference. Result has 159 places, 133 transitions, 1347 flow [2024-06-27 19:59:37,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1261, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1347, PETRI_PLACES=159, PETRI_TRANSITIONS=133} [2024-06-27 19:59:37,343 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 130 predicate places. [2024-06-27 19:59:37,343 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 133 transitions, 1347 flow [2024-06-27 19:59:37,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:37,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:37,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:37,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:59:37,343 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:37,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:37,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1105286216, now seen corresponding path program 9 times [2024-06-27 19:59:37,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:37,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938937287] [2024-06-27 19:59:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:37,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:38,136 INFO 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 19:59:38,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:38,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938937287] [2024-06-27 19:59:38,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938937287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:38,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:38,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:38,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116069105] [2024-06-27 19:59:38,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:38,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:38,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:38,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:38,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:38,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:38,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 133 transitions, 1347 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:38,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:38,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:38,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:38,483 INFO L124 PetriNetUnfolderBase]: 288/563 cut-off events. [2024-06-27 19:59:38,483 INFO L125 PetriNetUnfolderBase]: For 21405/21407 co-relation queries the response was YES. [2024-06-27 19:59:38,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3558 conditions, 563 events. 288/563 cut-off events. For 21405/21407 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2690 event pairs, 32 based on Foata normal form. 4/567 useless extension candidates. Maximal degree in co-relation 3481. Up to 476 conditions per place. [2024-06-27 19:59:38,487 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 125 selfloop transitions, 18 changer transitions 0/146 dead transitions. [2024-06-27 19:59:38,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 146 transitions, 1695 flow [2024-06-27 19:59:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:38,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:38,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-27 19:59:38,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2024-06-27 19:59:38,488 INFO L175 Difference]: Start difference. First operand has 159 places, 133 transitions, 1347 flow. Second operand 9 states and 106 transitions. [2024-06-27 19:59:38,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 146 transitions, 1695 flow [2024-06-27 19:59:38,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 146 transitions, 1636 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:38,529 INFO L231 Difference]: Finished difference. Result has 162 places, 134 transitions, 1360 flow [2024-06-27 19:59:38,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1360, PETRI_PLACES=162, PETRI_TRANSITIONS=134} [2024-06-27 19:59:38,530 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2024-06-27 19:59:38,530 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 134 transitions, 1360 flow [2024-06-27 19:59:38,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:38,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:38,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:38,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:59:38,530 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:38,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:38,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1670192388, now seen corresponding path program 10 times [2024-06-27 19:59:38,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:38,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276657128] [2024-06-27 19:59:38,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:38,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:39,449 INFO 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 19:59:39,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:39,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276657128] [2024-06-27 19:59:39,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276657128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:39,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:39,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:39,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040069811] [2024-06-27 19:59:39,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:39,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:39,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:39,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:39,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:39,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:39,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 134 transitions, 1360 flow. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:39,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:39,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:39,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:39,754 INFO L124 PetriNetUnfolderBase]: 285/558 cut-off events. [2024-06-27 19:59:39,754 INFO L125 PetriNetUnfolderBase]: For 20064/20066 co-relation queries the response was YES. [2024-06-27 19:59:39,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3411 conditions, 558 events. 285/558 cut-off events. For 20064/20066 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2678 event pairs, 33 based on Foata normal form. 4/562 useless extension candidates. Maximal degree in co-relation 3333. Up to 452 conditions per place. [2024-06-27 19:59:39,757 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 112 selfloop transitions, 30 changer transitions 0/145 dead transitions. [2024-06-27 19:59:39,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 145 transitions, 1674 flow [2024-06-27 19:59:39,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:39,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:39,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 19:59:39,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:59:39,758 INFO L175 Difference]: Start difference. First operand has 162 places, 134 transitions, 1360 flow. Second operand 9 states and 108 transitions. [2024-06-27 19:59:39,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 145 transitions, 1674 flow [2024-06-27 19:59:39,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 145 transitions, 1612 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:39,801 INFO L231 Difference]: Finished difference. Result has 164 places, 134 transitions, 1362 flow [2024-06-27 19:59:39,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1362, PETRI_PLACES=164, PETRI_TRANSITIONS=134} [2024-06-27 19:59:39,801 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 135 predicate places. [2024-06-27 19:59:39,801 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 134 transitions, 1362 flow [2024-06-27 19:59:39,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:39,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:39,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:39,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:59:39,801 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:39,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:39,802 INFO L85 PathProgramCache]: Analyzing trace with hash -18597777, now seen corresponding path program 2 times [2024-06-27 19:59:39,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:39,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486498565] [2024-06-27 19:59:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:39,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:40,711 INFO 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 19:59:40,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:40,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486498565] [2024-06-27 19:59:40,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486498565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:40,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:40,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:40,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382063043] [2024-06-27 19:59:40,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:40,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:40,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:40,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:40,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:40,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:40,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 134 transitions, 1362 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:40,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:40,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:40,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:41,040 INFO L124 PetriNetUnfolderBase]: 305/602 cut-off events. [2024-06-27 19:59:41,040 INFO L125 PetriNetUnfolderBase]: For 30642/30644 co-relation queries the response was YES. [2024-06-27 19:59:41,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3642 conditions, 602 events. 305/602 cut-off events. For 30642/30644 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2935 event pairs, 37 based on Foata normal form. 14/616 useless extension candidates. Maximal degree in co-relation 3563. Up to 463 conditions per place. [2024-06-27 19:59:41,044 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 120 selfloop transitions, 23 changer transitions 7/153 dead transitions. [2024-06-27 19:59:41,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 153 transitions, 1804 flow [2024-06-27 19:59:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:41,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:41,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 19:59:41,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-27 19:59:41,047 INFO L175 Difference]: Start difference. First operand has 164 places, 134 transitions, 1362 flow. Second operand 10 states and 124 transitions. [2024-06-27 19:59:41,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 153 transitions, 1804 flow [2024-06-27 19:59:41,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 153 transitions, 1671 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:41,095 INFO L231 Difference]: Finished difference. Result has 166 places, 134 transitions, 1304 flow [2024-06-27 19:59:41,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1304, PETRI_PLACES=166, PETRI_TRANSITIONS=134} [2024-06-27 19:59:41,096 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 137 predicate places. [2024-06-27 19:59:41,096 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 134 transitions, 1304 flow [2024-06-27 19:59:41,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:41,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:41,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:41,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:59:41,096 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:41,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:41,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1099770014, now seen corresponding path program 4 times [2024-06-27 19:59:41,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:41,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080625885] [2024-06-27 19:59:41,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:41,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:41,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:42,316 INFO 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 19:59:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080625885] [2024-06-27 19:59:42,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080625885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:42,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:42,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:42,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460117109] [2024-06-27 19:59:42,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:42,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:42,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:42,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:42,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:42,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:42,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 134 transitions, 1304 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:42,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:42,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:42,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:42,794 INFO L124 PetriNetUnfolderBase]: 284/559 cut-off events. [2024-06-27 19:59:42,794 INFO L125 PetriNetUnfolderBase]: For 20227/20229 co-relation queries the response was YES. [2024-06-27 19:59:42,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3337 conditions, 559 events. 284/559 cut-off events. For 20227/20229 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2679 event pairs, 33 based on Foata normal form. 3/562 useless extension candidates. Maximal degree in co-relation 3257. Up to 465 conditions per place. [2024-06-27 19:59:42,797 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 117 selfloop transitions, 27 changer transitions 0/147 dead transitions. [2024-06-27 19:59:42,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 147 transitions, 1666 flow [2024-06-27 19:59:42,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:42,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:42,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 19:59:42,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:59:42,798 INFO L175 Difference]: Start difference. First operand has 166 places, 134 transitions, 1304 flow. Second operand 10 states and 120 transitions. [2024-06-27 19:59:42,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 147 transitions, 1666 flow [2024-06-27 19:59:42,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 147 transitions, 1592 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:42,848 INFO L231 Difference]: Finished difference. Result has 169 places, 136 transitions, 1337 flow [2024-06-27 19:59:42,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1337, PETRI_PLACES=169, PETRI_TRANSITIONS=136} [2024-06-27 19:59:42,849 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 140 predicate places. [2024-06-27 19:59:42,849 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 136 transitions, 1337 flow [2024-06-27 19:59:42,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:42,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:42,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:42,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:59:42,849 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:42,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:42,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1523709718, now seen corresponding path program 5 times [2024-06-27 19:59:42,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:42,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007018469] [2024-06-27 19:59:42,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:42,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:44,178 INFO 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 19:59:44,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:44,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007018469] [2024-06-27 19:59:44,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007018469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:44,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:44,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:44,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30857747] [2024-06-27 19:59:44,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:44,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:44,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:44,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:44,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:44,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:44,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 136 transitions, 1337 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:44,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:44,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:44,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:44,705 INFO L124 PetriNetUnfolderBase]: 287/564 cut-off events. [2024-06-27 19:59:44,705 INFO L125 PetriNetUnfolderBase]: For 20961/20963 co-relation queries the response was YES. [2024-06-27 19:59:44,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3372 conditions, 564 events. 287/564 cut-off events. For 20961/20963 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2727 event pairs, 33 based on Foata normal form. 3/567 useless extension candidates. Maximal degree in co-relation 3291. Up to 425 conditions per place. [2024-06-27 19:59:44,709 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 102 selfloop transitions, 46 changer transitions 0/151 dead transitions. [2024-06-27 19:59:44,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 151 transitions, 1731 flow [2024-06-27 19:59:44,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:44,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:44,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 19:59:44,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033333333333333 [2024-06-27 19:59:44,710 INFO L175 Difference]: Start difference. First operand has 169 places, 136 transitions, 1337 flow. Second operand 10 states and 121 transitions. [2024-06-27 19:59:44,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 151 transitions, 1731 flow [2024-06-27 19:59:44,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 151 transitions, 1652 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:44,754 INFO L231 Difference]: Finished difference. Result has 173 places, 139 transitions, 1425 flow [2024-06-27 19:59:44,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1258, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1425, PETRI_PLACES=173, PETRI_TRANSITIONS=139} [2024-06-27 19:59:44,755 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 144 predicate places. [2024-06-27 19:59:44,755 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 139 transitions, 1425 flow [2024-06-27 19:59:44,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:44,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:44,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:44,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:59:44,756 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:44,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:44,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1329972118, now seen corresponding path program 6 times [2024-06-27 19:59:44,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:44,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413521994] [2024-06-27 19:59:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:44,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:46,228 INFO 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 19:59:46,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:46,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413521994] [2024-06-27 19:59:46,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413521994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:46,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:46,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:46,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384941277] [2024-06-27 19:59:46,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:46,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:46,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:46,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:46,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:46,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:46,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 139 transitions, 1425 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:46,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:46,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:46,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:46,648 INFO L124 PetriNetUnfolderBase]: 285/560 cut-off events. [2024-06-27 19:59:46,648 INFO L125 PetriNetUnfolderBase]: For 20598/20600 co-relation queries the response was YES. [2024-06-27 19:59:46,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3346 conditions, 560 events. 285/560 cut-off events. For 20598/20600 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2683 event pairs, 38 based on Foata normal form. 1/560 useless extension candidates. Maximal degree in co-relation 3263. Up to 443 conditions per place. [2024-06-27 19:59:46,652 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 111 selfloop transitions, 35 changer transitions 0/149 dead transitions. [2024-06-27 19:59:46,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 149 transitions, 1741 flow [2024-06-27 19:59:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:46,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:46,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 19:59:46,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:59:46,653 INFO L175 Difference]: Start difference. First operand has 173 places, 139 transitions, 1425 flow. Second operand 10 states and 120 transitions. [2024-06-27 19:59:46,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 149 transitions, 1741 flow [2024-06-27 19:59:46,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 149 transitions, 1600 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 19:59:46,700 INFO L231 Difference]: Finished difference. Result has 177 places, 139 transitions, 1359 flow [2024-06-27 19:59:46,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1359, PETRI_PLACES=177, PETRI_TRANSITIONS=139} [2024-06-27 19:59:46,701 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 148 predicate places. [2024-06-27 19:59:46,701 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 139 transitions, 1359 flow [2024-06-27 19:59:46,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:46,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:46,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:46,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:59:46,702 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:46,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:46,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1936105149, now seen corresponding path program 3 times [2024-06-27 19:59:46,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:46,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766978569] [2024-06-27 19:59:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:46,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:47,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:47,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:47,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766978569] [2024-06-27 19:59:47,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766978569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:47,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:47,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:59:47,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253810099] [2024-06-27 19:59:47,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:47,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:59:47,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:47,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:59:47,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:59:47,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:47,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 139 transitions, 1359 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 19:59:47,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:47,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:47,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:47,916 INFO L124 PetriNetUnfolderBase]: 289/567 cut-off events. [2024-06-27 19:59:47,916 INFO L125 PetriNetUnfolderBase]: For 22353/22355 co-relation queries the response was YES. [2024-06-27 19:59:47,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3352 conditions, 567 events. 289/567 cut-off events. For 22353/22355 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2730 event pairs, 35 based on Foata normal form. 2/569 useless extension candidates. Maximal degree in co-relation 3268. Up to 498 conditions per place. [2024-06-27 19:59:47,920 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 132 selfloop transitions, 15 changer transitions 0/150 dead transitions. [2024-06-27 19:59:47,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 150 transitions, 1703 flow [2024-06-27 19:59:47,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:59:47,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:59:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 19:59:47,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 19:59:47,921 INFO L175 Difference]: Start difference. First operand has 177 places, 139 transitions, 1359 flow. Second operand 9 states and 105 transitions. [2024-06-27 19:59:47,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 150 transitions, 1703 flow [2024-06-27 19:59:47,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 150 transitions, 1597 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:47,968 INFO L231 Difference]: Finished difference. Result has 176 places, 140 transitions, 1315 flow [2024-06-27 19:59:47,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1315, PETRI_PLACES=176, PETRI_TRANSITIONS=140} [2024-06-27 19:59:47,968 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2024-06-27 19:59:47,968 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 140 transitions, 1315 flow [2024-06-27 19:59:47,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 19:59:47,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:47,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:47,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:59:47,969 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:47,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:47,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1277573009, now seen corresponding path program 4 times [2024-06-27 19:59:47,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:47,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324679369] [2024-06-27 19:59:47,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:47,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:49,066 INFO 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 19:59:49,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:49,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324679369] [2024-06-27 19:59:49,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324679369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:49,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:49,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:49,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592424614] [2024-06-27 19:59:49,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:49,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:49,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:49,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:49,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:49,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:49,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 140 transitions, 1315 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:49,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:49,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:49,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:49,462 INFO L124 PetriNetUnfolderBase]: 293/575 cut-off events. [2024-06-27 19:59:49,462 INFO L125 PetriNetUnfolderBase]: For 23452/23454 co-relation queries the response was YES. [2024-06-27 19:59:49,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3380 conditions, 575 events. 293/575 cut-off events. For 23452/23454 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2785 event pairs, 33 based on Foata normal form. 2/577 useless extension candidates. Maximal degree in co-relation 3295. Up to 492 conditions per place. [2024-06-27 19:59:49,465 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 133 selfloop transitions, 18 changer transitions 0/154 dead transitions. [2024-06-27 19:59:49,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 154 transitions, 1675 flow [2024-06-27 19:59:49,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:49,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:49,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 19:59:49,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-27 19:59:49,467 INFO L175 Difference]: Start difference. First operand has 176 places, 140 transitions, 1315 flow. Second operand 11 states and 124 transitions. [2024-06-27 19:59:49,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 154 transitions, 1675 flow [2024-06-27 19:59:49,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 154 transitions, 1623 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:49,524 INFO L231 Difference]: Finished difference. Result has 180 places, 141 transitions, 1333 flow [2024-06-27 19:59:49,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1333, PETRI_PLACES=180, PETRI_TRANSITIONS=141} [2024-06-27 19:59:49,525 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 151 predicate places. [2024-06-27 19:59:49,525 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 141 transitions, 1333 flow [2024-06-27 19:59:49,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:49,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:49,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:49,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:59:49,525 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:49,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:49,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1287103928, now seen corresponding path program 7 times [2024-06-27 19:59:49,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:49,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053442173] [2024-06-27 19:59:49,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:49,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:50,606 INFO 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 19:59:50,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:50,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053442173] [2024-06-27 19:59:50,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053442173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:50,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:50,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:50,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897667346] [2024-06-27 19:59:50,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:50,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:50,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:50,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:50,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:50,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:50,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 141 transitions, 1333 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:50,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:50,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:50,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:51,002 INFO L124 PetriNetUnfolderBase]: 291/572 cut-off events. [2024-06-27 19:59:51,002 INFO L125 PetriNetUnfolderBase]: For 21493/21495 co-relation queries the response was YES. [2024-06-27 19:59:51,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3293 conditions, 572 events. 291/572 cut-off events. For 21493/21495 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2777 event pairs, 35 based on Foata normal form. 1/573 useless extension candidates. Maximal degree in co-relation 3207. Up to 511 conditions per place. [2024-06-27 19:59:51,006 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 132 selfloop transitions, 16 changer transitions 0/151 dead transitions. [2024-06-27 19:59:51,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 151 transitions, 1653 flow [2024-06-27 19:59:51,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:51,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:51,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 19:59:51,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-27 19:59:51,007 INFO L175 Difference]: Start difference. First operand has 180 places, 141 transitions, 1333 flow. Second operand 10 states and 113 transitions. [2024-06-27 19:59:51,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 151 transitions, 1653 flow [2024-06-27 19:59:51,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 151 transitions, 1562 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:51,063 INFO L231 Difference]: Finished difference. Result has 182 places, 141 transitions, 1279 flow [2024-06-27 19:59:51,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1279, PETRI_PLACES=182, PETRI_TRANSITIONS=141} [2024-06-27 19:59:51,063 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 153 predicate places. [2024-06-27 19:59:51,064 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 141 transitions, 1279 flow [2024-06-27 19:59:51,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:51,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:51,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:51,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:59:51,064 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:51,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:51,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1523911528, now seen corresponding path program 8 times [2024-06-27 19:59:51,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:51,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608438102] [2024-06-27 19:59:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:51,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:52,257 INFO 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 19:59:52,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:52,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608438102] [2024-06-27 19:59:52,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608438102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:52,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:52,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:52,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750571394] [2024-06-27 19:59:52,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:52,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:52,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:52,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:52,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:52,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:52,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 141 transitions, 1279 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:52,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:52,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:52,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:52,678 INFO L124 PetriNetUnfolderBase]: 287/567 cut-off events. [2024-06-27 19:59:52,678 INFO L125 PetriNetUnfolderBase]: For 20451/20453 co-relation queries the response was YES. [2024-06-27 19:59:52,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3059 conditions, 567 events. 287/567 cut-off events. For 20451/20453 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2739 event pairs, 40 based on Foata normal form. 2/568 useless extension candidates. Maximal degree in co-relation 2973. Up to 347 conditions per place. [2024-06-27 19:59:52,681 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 75 selfloop transitions, 73 changer transitions 0/151 dead transitions. [2024-06-27 19:59:52,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 151 transitions, 1599 flow [2024-06-27 19:59:52,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:52,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:52,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-27 19:59:52,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-27 19:59:52,682 INFO L175 Difference]: Start difference. First operand has 182 places, 141 transitions, 1279 flow. Second operand 10 states and 128 transitions. [2024-06-27 19:59:52,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 151 transitions, 1599 flow [2024-06-27 19:59:52,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 151 transitions, 1488 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-27 19:59:52,732 INFO L231 Difference]: Finished difference. Result has 183 places, 141 transitions, 1327 flow [2024-06-27 19:59:52,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1327, PETRI_PLACES=183, PETRI_TRANSITIONS=141} [2024-06-27 19:59:52,732 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 154 predicate places. [2024-06-27 19:59:52,732 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 141 transitions, 1327 flow [2024-06-27 19:59:52,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:52,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:52,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:59:52,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:59:52,732 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:52,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:52,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1670407869, now seen corresponding path program 5 times [2024-06-27 19:59:52,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:52,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748125894] [2024-06-27 19:59:52,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:52,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:53,720 INFO 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 19:59:53,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:53,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748125894] [2024-06-27 19:59:53,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748125894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:53,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:53,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:53,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827626031] [2024-06-27 19:59:53,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:53,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:53,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:53,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:53,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:53,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:53,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 141 transitions, 1327 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:53,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:53,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:53,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:54,020 INFO L124 PetriNetUnfolderBase]: 284/563 cut-off events. [2024-06-27 19:59:54,020 INFO L125 PetriNetUnfolderBase]: For 18757/18759 co-relation queries the response was YES. [2024-06-27 19:59:54,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2996 conditions, 563 events. 284/563 cut-off events. For 18757/18759 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2728 event pairs, 34 based on Foata normal form. 4/567 useless extension candidates. Maximal degree in co-relation 2908. Up to 448 conditions per place. [2024-06-27 19:59:54,023 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 117 selfloop transitions, 34 changer transitions 0/154 dead transitions. [2024-06-27 19:59:54,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 154 transitions, 1672 flow [2024-06-27 19:59:54,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:59:54,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:59:54,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 19:59:54,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 19:59:54,024 INFO L175 Difference]: Start difference. First operand has 183 places, 141 transitions, 1327 flow. Second operand 10 states and 120 transitions. [2024-06-27 19:59:54,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 154 transitions, 1672 flow [2024-06-27 19:59:54,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 154 transitions, 1444 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-27 19:59:54,067 INFO L231 Difference]: Finished difference. Result has 182 places, 142 transitions, 1200 flow [2024-06-27 19:59:54,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1200, PETRI_PLACES=182, PETRI_TRANSITIONS=142} [2024-06-27 19:59:54,067 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 153 predicate places. [2024-06-27 19:59:54,068 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 142 transitions, 1200 flow [2024-06-27 19:59:54,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:54,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:54,068 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 19:59:54,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:59:54,068 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:54,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:54,068 INFO L85 PathProgramCache]: Analyzing trace with hash 175724481, now seen corresponding path program 1 times [2024-06-27 19:59:54,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:54,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34065734] [2024-06-27 19:59:54,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:54,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:54,983 INFO 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 19:59:54,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:54,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34065734] [2024-06-27 19:59:54,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34065734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:54,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:54,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:54,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306374890] [2024-06-27 19:59:54,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:54,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:54,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:54,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:54,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:55,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:55,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 142 transitions, 1200 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:55,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:55,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:55,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:55,354 INFO L124 PetriNetUnfolderBase]: 309/617 cut-off events. [2024-06-27 19:59:55,355 INFO L125 PetriNetUnfolderBase]: For 26672/26674 co-relation queries the response was YES. [2024-06-27 19:59:55,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3006 conditions, 617 events. 309/617 cut-off events. For 26672/26674 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3068 event pairs, 35 based on Foata normal form. 10/627 useless extension candidates. Maximal degree in co-relation 2919. Up to 488 conditions per place. [2024-06-27 19:59:55,358 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 134 selfloop transitions, 15 changer transitions 16/168 dead transitions. [2024-06-27 19:59:55,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 168 transitions, 1642 flow [2024-06-27 19:59:55,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:55,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:55,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 19:59:55,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 19:59:55,359 INFO L175 Difference]: Start difference. First operand has 182 places, 142 transitions, 1200 flow. Second operand 11 states and 130 transitions. [2024-06-27 19:59:55,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 168 transitions, 1642 flow [2024-06-27 19:59:55,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 168 transitions, 1513 flow, removed 19 selfloop flow, removed 13 redundant places. [2024-06-27 19:59:55,399 INFO L231 Difference]: Finished difference. Result has 186 places, 145 transitions, 1155 flow [2024-06-27 19:59:55,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1155, PETRI_PLACES=186, PETRI_TRANSITIONS=145} [2024-06-27 19:59:55,399 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 157 predicate places. [2024-06-27 19:59:55,399 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 145 transitions, 1155 flow [2024-06-27 19:59:55,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:55,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:55,400 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 19:59:55,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:59:55,400 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:55,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:55,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2082902451, now seen corresponding path program 2 times [2024-06-27 19:59:55,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:55,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022840216] [2024-06-27 19:59:55,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:55,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:56,202 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 19:59:56,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:56,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022840216] [2024-06-27 19:59:56,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022840216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:56,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:56,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:56,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412084233] [2024-06-27 19:59:56,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:56,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:56,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:56,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:56,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:56,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 145 transitions, 1155 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:56,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:56,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:56,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:56,544 INFO L124 PetriNetUnfolderBase]: 306/616 cut-off events. [2024-06-27 19:59:56,544 INFO L125 PetriNetUnfolderBase]: For 27589/27589 co-relation queries the response was YES. [2024-06-27 19:59:56,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2923 conditions, 616 events. 306/616 cut-off events. For 27589/27589 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3091 event pairs, 51 based on Foata normal form. 8/624 useless extension candidates. Maximal degree in co-relation 2834. Up to 485 conditions per place. [2024-06-27 19:59:56,547 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 137 selfloop transitions, 16 changer transitions 16/172 dead transitions. [2024-06-27 19:59:56,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 172 transitions, 1599 flow [2024-06-27 19:59:56,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 19:59:56,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 19:59:56,548 INFO L175 Difference]: Start difference. First operand has 186 places, 145 transitions, 1155 flow. Second operand 11 states and 133 transitions. [2024-06-27 19:59:56,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 172 transitions, 1599 flow [2024-06-27 19:59:56,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 172 transitions, 1556 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 19:59:56,586 INFO L231 Difference]: Finished difference. Result has 190 places, 145 transitions, 1168 flow [2024-06-27 19:59:56,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1168, PETRI_PLACES=190, PETRI_TRANSITIONS=145} [2024-06-27 19:59:56,586 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 161 predicate places. [2024-06-27 19:59:56,586 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 145 transitions, 1168 flow [2024-06-27 19:59:56,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:56,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:56,587 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 19:59:56,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:59:56,587 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:56,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:56,587 INFO L85 PathProgramCache]: Analyzing trace with hash -921245121, now seen corresponding path program 3 times [2024-06-27 19:59:56,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:56,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127397425] [2024-06-27 19:59:56,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:56,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:57,403 INFO 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 19:59:57,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:57,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127397425] [2024-06-27 19:59:57,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127397425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:57,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:57,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:57,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252602662] [2024-06-27 19:59:57,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:57,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:57,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:57,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:57,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:57,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:57,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 145 transitions, 1168 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:57,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:57,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:57,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:57,749 INFO L124 PetriNetUnfolderBase]: 306/614 cut-off events. [2024-06-27 19:59:57,749 INFO L125 PetriNetUnfolderBase]: For 31025/31025 co-relation queries the response was YES. [2024-06-27 19:59:57,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2965 conditions, 614 events. 306/614 cut-off events. For 31025/31025 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3087 event pairs, 54 based on Foata normal form. 10/624 useless extension candidates. Maximal degree in co-relation 2875. Up to 487 conditions per place. [2024-06-27 19:59:57,753 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 139 selfloop transitions, 19 changer transitions 12/173 dead transitions. [2024-06-27 19:59:57,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 173 transitions, 1651 flow [2024-06-27 19:59:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:57,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:57,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 19:59:57,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 19:59:57,754 INFO L175 Difference]: Start difference. First operand has 190 places, 145 transitions, 1168 flow. Second operand 11 states and 133 transitions. [2024-06-27 19:59:57,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 173 transitions, 1651 flow [2024-06-27 19:59:57,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 173 transitions, 1613 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 19:59:57,798 INFO L231 Difference]: Finished difference. Result has 191 places, 148 transitions, 1209 flow [2024-06-27 19:59:57,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1209, PETRI_PLACES=191, PETRI_TRANSITIONS=148} [2024-06-27 19:59:57,799 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2024-06-27 19:59:57,799 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 148 transitions, 1209 flow [2024-06-27 19:59:57,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:57,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:57,799 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 19:59:57,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:59:57,799 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:57,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash -238930161, now seen corresponding path program 4 times [2024-06-27 19:59:57,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:57,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104077074] [2024-06-27 19:59:57,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:57,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:57,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:58,700 INFO 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 19:59:58,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:58,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104077074] [2024-06-27 19:59:58,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104077074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:58,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:58,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:58,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028553775] [2024-06-27 19:59:58,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:58,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:58,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:58,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:58,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:59:58,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 19:59:58,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 148 transitions, 1209 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:58,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:59:58,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 19:59:58,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:59:59,049 INFO L124 PetriNetUnfolderBase]: 298/602 cut-off events. [2024-06-27 19:59:59,049 INFO L125 PetriNetUnfolderBase]: For 27118/27118 co-relation queries the response was YES. [2024-06-27 19:59:59,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2886 conditions, 602 events. 298/602 cut-off events. For 27118/27118 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3009 event pairs, 49 based on Foata normal form. 8/610 useless extension candidates. Maximal degree in co-relation 2796. Up to 485 conditions per place. [2024-06-27 19:59:59,055 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 138 selfloop transitions, 17 changer transitions 11/169 dead transitions. [2024-06-27 19:59:59,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 169 transitions, 1614 flow [2024-06-27 19:59:59,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:59:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:59:59,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 19:59:59,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 19:59:59,057 INFO L175 Difference]: Start difference. First operand has 191 places, 148 transitions, 1209 flow. Second operand 11 states and 130 transitions. [2024-06-27 19:59:59,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 169 transitions, 1614 flow [2024-06-27 19:59:59,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 169 transitions, 1569 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 19:59:59,101 INFO L231 Difference]: Finished difference. Result has 193 places, 146 transitions, 1186 flow [2024-06-27 19:59:59,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1186, PETRI_PLACES=193, PETRI_TRANSITIONS=146} [2024-06-27 19:59:59,101 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 164 predicate places. [2024-06-27 19:59:59,101 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 146 transitions, 1186 flow [2024-06-27 19:59:59,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:59:59,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:59:59,102 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 19:59:59,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:59:59,102 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:59:59,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:59:59,102 INFO L85 PathProgramCache]: Analyzing trace with hash -381725151, now seen corresponding path program 5 times [2024-06-27 19:59:59,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:59:59,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017740249] [2024-06-27 19:59:59,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:59:59,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:59:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:59:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:59:59,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:59:59,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017740249] [2024-06-27 19:59:59,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017740249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:59:59,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:59:59,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:59:59,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511903932] [2024-06-27 19:59:59,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:59:59,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:59:59,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:59:59,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:59:59,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:00,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:00,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 146 transitions, 1186 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:00,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:00,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:00,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:00,396 INFO L124 PetriNetUnfolderBase]: 299/605 cut-off events. [2024-06-27 20:00:00,396 INFO L125 PetriNetUnfolderBase]: For 27105/27105 co-relation queries the response was YES. [2024-06-27 20:00:00,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2878 conditions, 605 events. 299/605 cut-off events. For 27105/27105 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3027 event pairs, 46 based on Foata normal form. 8/613 useless extension candidates. Maximal degree in co-relation 2788. Up to 483 conditions per place. [2024-06-27 20:00:00,400 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 135 selfloop transitions, 14 changer transitions 17/169 dead transitions. [2024-06-27 20:00:00,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 169 transitions, 1597 flow [2024-06-27 20:00:00,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:00,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:00,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 20:00:00,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 20:00:00,401 INFO L175 Difference]: Start difference. First operand has 193 places, 146 transitions, 1186 flow. Second operand 11 states and 130 transitions. [2024-06-27 20:00:00,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 169 transitions, 1597 flow [2024-06-27 20:00:00,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 169 transitions, 1555 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:00,448 INFO L231 Difference]: Finished difference. Result has 192 places, 143 transitions, 1146 flow [2024-06-27 20:00:00,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1146, PETRI_PLACES=192, PETRI_TRANSITIONS=143} [2024-06-27 20:00:00,449 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2024-06-27 20:00:00,449 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 143 transitions, 1146 flow [2024-06-27 20:00:00,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:00,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:00,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:00,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 20:00:00,449 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:00,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:00,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1043985759, now seen corresponding path program 6 times [2024-06-27 20:00:00,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:00,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569608094] [2024-06-27 20:00:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:00,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:01,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:01,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569608094] [2024-06-27 20:00:01,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569608094] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:01,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:01,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:01,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471654104] [2024-06-27 20:00:01,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:01,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:01,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:01,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:01,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:01,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:01,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 143 transitions, 1146 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:01,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:01,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:01,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:01,618 INFO L124 PetriNetUnfolderBase]: 301/607 cut-off events. [2024-06-27 20:00:01,618 INFO L125 PetriNetUnfolderBase]: For 27057/27057 co-relation queries the response was YES. [2024-06-27 20:00:01,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2864 conditions, 607 events. 301/607 cut-off events. For 27057/27057 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3026 event pairs, 15 based on Foata normal form. 8/615 useless extension candidates. Maximal degree in co-relation 2774. Up to 465 conditions per place. [2024-06-27 20:00:01,622 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 133 selfloop transitions, 13 changer transitions 20/169 dead transitions. [2024-06-27 20:00:01,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 169 transitions, 1566 flow [2024-06-27 20:00:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:01,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 20:00:01,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 20:00:01,623 INFO L175 Difference]: Start difference. First operand has 192 places, 143 transitions, 1146 flow. Second operand 11 states and 130 transitions. [2024-06-27 20:00:01,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 169 transitions, 1566 flow [2024-06-27 20:00:01,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 169 transitions, 1528 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 20:00:01,671 INFO L231 Difference]: Finished difference. Result has 189 places, 140 transitions, 1112 flow [2024-06-27 20:00:01,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1108, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1112, PETRI_PLACES=189, PETRI_TRANSITIONS=140} [2024-06-27 20:00:01,671 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 160 predicate places. [2024-06-27 20:00:01,671 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 140 transitions, 1112 flow [2024-06-27 20:00:01,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:01,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:01,671 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 20:00:01,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 20:00:01,672 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:01,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:01,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1618989369, now seen corresponding path program 7 times [2024-06-27 20:00:01,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:01,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344415546] [2024-06-27 20:00:01,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:01,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:02,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:02,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344415546] [2024-06-27 20:00:02,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344415546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:02,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:02,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:02,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269451561] [2024-06-27 20:00:02,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:02,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:02,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:02,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:02,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:02,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:02,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 140 transitions, 1112 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:02,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:02,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:02,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:02,853 INFO L124 PetriNetUnfolderBase]: 275/545 cut-off events. [2024-06-27 20:00:02,854 INFO L125 PetriNetUnfolderBase]: For 18576/18576 co-relation queries the response was YES. [2024-06-27 20:00:02,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2679 conditions, 545 events. 275/545 cut-off events. For 18576/18576 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 2677 event pairs, 27 based on Foata normal form. 2/547 useless extension candidates. Maximal degree in co-relation 2590. Up to 449 conditions per place. [2024-06-27 20:00:02,858 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 139 selfloop transitions, 16 changer transitions 0/158 dead transitions. [2024-06-27 20:00:02,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 158 transitions, 1478 flow [2024-06-27 20:00:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 20:00:02,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-27 20:00:02,859 INFO L175 Difference]: Start difference. First operand has 189 places, 140 transitions, 1112 flow. Second operand 11 states and 125 transitions. [2024-06-27 20:00:02,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 158 transitions, 1478 flow [2024-06-27 20:00:02,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 158 transitions, 1416 flow, removed 4 selfloop flow, removed 16 redundant places. [2024-06-27 20:00:02,895 INFO L231 Difference]: Finished difference. Result has 180 places, 141 transitions, 1102 flow [2024-06-27 20:00:02,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1050, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1102, PETRI_PLACES=180, PETRI_TRANSITIONS=141} [2024-06-27 20:00:02,895 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 151 predicate places. [2024-06-27 20:00:02,896 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 141 transitions, 1102 flow [2024-06-27 20:00:02,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:02,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:02,896 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 20:00:02,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 20:00:02,896 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:02,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:02,896 INFO L85 PathProgramCache]: Analyzing trace with hash 715201877, now seen corresponding path program 8 times [2024-06-27 20:00:02,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:02,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164177785] [2024-06-27 20:00:02,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:02,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:03,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:03,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164177785] [2024-06-27 20:00:03,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164177785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:03,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:03,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:03,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521266288] [2024-06-27 20:00:03,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:03,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:03,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:03,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:03,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:03,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:03,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 141 transitions, 1102 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:03,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:03,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:03,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:04,140 INFO L124 PetriNetUnfolderBase]: 295/589 cut-off events. [2024-06-27 20:00:04,140 INFO L125 PetriNetUnfolderBase]: For 27396/27396 co-relation queries the response was YES. [2024-06-27 20:00:04,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 589 events. 295/589 cut-off events. For 27396/27396 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 2961 event pairs, 27 based on Foata normal form. 8/597 useless extension candidates. Maximal degree in co-relation 2715. Up to 478 conditions per place. [2024-06-27 20:00:04,144 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 134 selfloop transitions, 13 changer transitions 12/162 dead transitions. [2024-06-27 20:00:04,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 162 transitions, 1497 flow [2024-06-27 20:00:04,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:04,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 20:00:04,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-27 20:00:04,145 INFO L175 Difference]: Start difference. First operand has 180 places, 141 transitions, 1102 flow. Second operand 11 states and 128 transitions. [2024-06-27 20:00:04,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 162 transitions, 1497 flow [2024-06-27 20:00:04,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 162 transitions, 1455 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 20:00:04,196 INFO L231 Difference]: Finished difference. Result has 184 places, 140 transitions, 1084 flow [2024-06-27 20:00:04,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1084, PETRI_PLACES=184, PETRI_TRANSITIONS=140} [2024-06-27 20:00:04,197 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-27 20:00:04,197 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 140 transitions, 1084 flow [2024-06-27 20:00:04,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:04,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:04,197 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 20:00:04,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 20:00:04,197 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:04,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:04,198 INFO L85 PathProgramCache]: Analyzing trace with hash -887557709, now seen corresponding path program 9 times [2024-06-27 20:00:04,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:04,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413044127] [2024-06-27 20:00:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:04,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:05,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:05,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413044127] [2024-06-27 20:00:05,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413044127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:05,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:05,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:05,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354690181] [2024-06-27 20:00:05,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:05,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:05,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:05,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:05,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:05,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:05,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 140 transitions, 1084 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:05,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:05,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:05,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:05,383 INFO L124 PetriNetUnfolderBase]: 298/594 cut-off events. [2024-06-27 20:00:05,384 INFO L125 PetriNetUnfolderBase]: For 31897/31897 co-relation queries the response was YES. [2024-06-27 20:00:05,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2858 conditions, 594 events. 298/594 cut-off events. For 31897/31897 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3003 event pairs, 37 based on Foata normal form. 10/604 useless extension candidates. Maximal degree in co-relation 2773. Up to 478 conditions per place. [2024-06-27 20:00:05,387 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 135 selfloop transitions, 14 changer transitions 12/164 dead transitions. [2024-06-27 20:00:05,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 164 transitions, 1533 flow [2024-06-27 20:00:05,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:05,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 20:00:05,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 20:00:05,388 INFO L175 Difference]: Start difference. First operand has 184 places, 140 transitions, 1084 flow. Second operand 11 states and 129 transitions. [2024-06-27 20:00:05,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 164 transitions, 1533 flow [2024-06-27 20:00:05,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 164 transitions, 1501 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:05,437 INFO L231 Difference]: Finished difference. Result has 184 places, 141 transitions, 1100 flow [2024-06-27 20:00:05,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1100, PETRI_PLACES=184, PETRI_TRANSITIONS=141} [2024-06-27 20:00:05,437 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 155 predicate places. [2024-06-27 20:00:05,437 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 141 transitions, 1100 flow [2024-06-27 20:00:05,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:05,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:05,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:05,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 20:00:05,437 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:05,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:05,438 INFO L85 PathProgramCache]: Analyzing trace with hash -892203989, now seen corresponding path program 10 times [2024-06-27 20:00:05,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:05,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124018471] [2024-06-27 20:00:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:05,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:06,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:06,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:06,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124018471] [2024-06-27 20:00:06,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124018471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:06,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:06,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:06,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117155169] [2024-06-27 20:00:06,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:06,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:06,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:06,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:06,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:06,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:06,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 141 transitions, 1100 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:06,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:06,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:06,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:06,769 INFO L124 PetriNetUnfolderBase]: 282/562 cut-off events. [2024-06-27 20:00:06,769 INFO L125 PetriNetUnfolderBase]: For 19393/19393 co-relation queries the response was YES. [2024-06-27 20:00:06,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2710 conditions, 562 events. 282/562 cut-off events. For 19393/19393 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 2795 event pairs, 29 based on Foata normal form. 2/564 useless extension candidates. Maximal degree in co-relation 2625. Up to 480 conditions per place. [2024-06-27 20:00:06,773 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 139 selfloop transitions, 16 changer transitions 0/158 dead transitions. [2024-06-27 20:00:06,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 158 transitions, 1467 flow [2024-06-27 20:00:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:06,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:06,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 20:00:06,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-27 20:00:06,774 INFO L175 Difference]: Start difference. First operand has 184 places, 141 transitions, 1100 flow. Second operand 11 states and 124 transitions. [2024-06-27 20:00:06,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 158 transitions, 1467 flow [2024-06-27 20:00:06,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 158 transitions, 1433 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 20:00:06,822 INFO L231 Difference]: Finished difference. Result has 185 places, 143 transitions, 1127 flow [2024-06-27 20:00:06,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1127, PETRI_PLACES=185, PETRI_TRANSITIONS=143} [2024-06-27 20:00:06,822 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 156 predicate places. [2024-06-27 20:00:06,822 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 143 transitions, 1127 flow [2024-06-27 20:00:06,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:06,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:06,822 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 20:00:06,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 20:00:06,823 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:06,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:06,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1766539315, now seen corresponding path program 11 times [2024-06-27 20:00:06,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:06,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807949598] [2024-06-27 20:00:06,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:06,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:07,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:07,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807949598] [2024-06-27 20:00:07,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807949598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:07,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:07,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:07,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421522313] [2024-06-27 20:00:07,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:07,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:07,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:07,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:07,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:07,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:07,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 143 transitions, 1127 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:07,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:07,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:07,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:08,253 INFO L124 PetriNetUnfolderBase]: 305/613 cut-off events. [2024-06-27 20:00:08,253 INFO L125 PetriNetUnfolderBase]: For 27723/27723 co-relation queries the response was YES. [2024-06-27 20:00:08,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 613 events. 305/613 cut-off events. For 27723/27723 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3105 event pairs, 33 based on Foata normal form. 8/621 useless extension candidates. Maximal degree in co-relation 2845. Up to 512 conditions per place. [2024-06-27 20:00:08,256 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 139 selfloop transitions, 13 changer transitions 11/166 dead transitions. [2024-06-27 20:00:08,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 166 transitions, 1569 flow [2024-06-27 20:00:08,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:08,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:08,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 20:00:08,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 20:00:08,257 INFO L175 Difference]: Start difference. First operand has 185 places, 143 transitions, 1127 flow. Second operand 11 states and 126 transitions. [2024-06-27 20:00:08,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 166 transitions, 1569 flow [2024-06-27 20:00:08,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 166 transitions, 1527 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 20:00:08,308 INFO L231 Difference]: Finished difference. Result has 192 places, 146 transitions, 1151 flow [2024-06-27 20:00:08,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1151, PETRI_PLACES=192, PETRI_TRANSITIONS=146} [2024-06-27 20:00:08,309 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2024-06-27 20:00:08,309 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 146 transitions, 1151 flow [2024-06-27 20:00:08,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:08,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:08,309 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 20:00:08,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 20:00:08,310 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:08,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:08,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1766654635, now seen corresponding path program 12 times [2024-06-27 20:00:08,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:08,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282763580] [2024-06-27 20:00:08,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:08,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:09,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:09,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:09,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282763580] [2024-06-27 20:00:09,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282763580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:09,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:09,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:09,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204798382] [2024-06-27 20:00:09,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:09,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:09,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:09,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:09,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:09,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:09,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 146 transitions, 1151 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:09,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:09,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:09,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:09,420 INFO L124 PetriNetUnfolderBase]: 298/596 cut-off events. [2024-06-27 20:00:09,420 INFO L125 PetriNetUnfolderBase]: For 20375/20375 co-relation queries the response was YES. [2024-06-27 20:00:09,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2859 conditions, 596 events. 298/596 cut-off events. For 20375/20375 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3018 event pairs, 31 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 2769. Up to 514 conditions per place. [2024-06-27 20:00:09,424 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 145 selfloop transitions, 16 changer transitions 0/164 dead transitions. [2024-06-27 20:00:09,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 164 transitions, 1534 flow [2024-06-27 20:00:09,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:09,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:09,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 20:00:09,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-27 20:00:09,425 INFO L175 Difference]: Start difference. First operand has 192 places, 146 transitions, 1151 flow. Second operand 11 states and 124 transitions. [2024-06-27 20:00:09,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 164 transitions, 1534 flow [2024-06-27 20:00:09,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 164 transitions, 1507 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 20:00:09,501 INFO L231 Difference]: Finished difference. Result has 194 places, 149 transitions, 1195 flow [2024-06-27 20:00:09,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1124, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1195, PETRI_PLACES=194, PETRI_TRANSITIONS=149} [2024-06-27 20:00:09,502 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-27 20:00:09,502 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 149 transitions, 1195 flow [2024-06-27 20:00:09,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:09,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:09,502 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 20:00:09,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 20:00:09,502 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:09,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:09,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1595659255, now seen corresponding path program 13 times [2024-06-27 20:00:09,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:09,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676240380] [2024-06-27 20:00:09,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:09,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:10,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:10,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:10,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676240380] [2024-06-27 20:00:10,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676240380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:10,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:10,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:10,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508796789] [2024-06-27 20:00:10,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:10,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:10,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:10,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:10,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:10,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:10,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 149 transitions, 1195 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:10,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:10,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:10,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:10,810 INFO L124 PetriNetUnfolderBase]: 317/633 cut-off events. [2024-06-27 20:00:10,810 INFO L125 PetriNetUnfolderBase]: For 20647/20647 co-relation queries the response was YES. [2024-06-27 20:00:10,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3089 conditions, 633 events. 317/633 cut-off events. For 20647/20647 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3262 event pairs, 37 based on Foata normal form. 2/635 useless extension candidates. Maximal degree in co-relation 2999. Up to 548 conditions per place. [2024-06-27 20:00:10,814 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 148 selfloop transitions, 22 changer transitions 0/173 dead transitions. [2024-06-27 20:00:10,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 173 transitions, 1683 flow [2024-06-27 20:00:10,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 20:00:10,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-27 20:00:10,815 INFO L175 Difference]: Start difference. First operand has 194 places, 149 transitions, 1195 flow. Second operand 11 states and 128 transitions. [2024-06-27 20:00:10,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 173 transitions, 1683 flow [2024-06-27 20:00:10,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 173 transitions, 1641 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 20:00:10,875 INFO L231 Difference]: Finished difference. Result has 201 places, 159 transitions, 1342 flow [2024-06-27 20:00:10,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1342, PETRI_PLACES=201, PETRI_TRANSITIONS=159} [2024-06-27 20:00:10,876 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-27 20:00:10,876 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 159 transitions, 1342 flow [2024-06-27 20:00:10,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:10,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:10,876 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 20:00:10,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 20:00:10,876 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:10,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:10,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1595836885, now seen corresponding path program 14 times [2024-06-27 20:00:10,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:10,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942218250] [2024-06-27 20:00:10,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:10,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:11,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:11,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942218250] [2024-06-27 20:00:11,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942218250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:11,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:11,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:11,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652692104] [2024-06-27 20:00:11,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:11,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:11,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:11,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:11,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:11,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:11,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 159 transitions, 1342 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:11,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:11,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:11,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:12,176 INFO L124 PetriNetUnfolderBase]: 332/662 cut-off events. [2024-06-27 20:00:12,176 INFO L125 PetriNetUnfolderBase]: For 25143/25143 co-relation queries the response was YES. [2024-06-27 20:00:12,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3413 conditions, 662 events. 332/662 cut-off events. For 25143/25143 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3465 event pairs, 36 based on Foata normal form. 2/664 useless extension candidates. Maximal degree in co-relation 3319. Up to 554 conditions per place. [2024-06-27 20:00:12,180 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 151 selfloop transitions, 24 changer transitions 0/178 dead transitions. [2024-06-27 20:00:12,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 178 transitions, 1899 flow [2024-06-27 20:00:12,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:12,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:12,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-27 20:00:12,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-27 20:00:12,181 INFO L175 Difference]: Start difference. First operand has 201 places, 159 transitions, 1342 flow. Second operand 11 states and 130 transitions. [2024-06-27 20:00:12,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 178 transitions, 1899 flow [2024-06-27 20:00:12,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 178 transitions, 1848 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 20:00:12,242 INFO L231 Difference]: Finished difference. Result has 207 places, 162 transitions, 1400 flow [2024-06-27 20:00:12,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1400, PETRI_PLACES=207, PETRI_TRANSITIONS=162} [2024-06-27 20:00:12,243 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2024-06-27 20:00:12,243 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 162 transitions, 1400 flow [2024-06-27 20:00:12,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:12,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:12,243 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 20:00:12,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 20:00:12,243 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:12,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:12,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2013361073, now seen corresponding path program 15 times [2024-06-27 20:00:12,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:12,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567338553] [2024-06-27 20:00:12,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:12,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:13,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:13,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567338553] [2024-06-27 20:00:13,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567338553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:13,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:13,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:13,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372242980] [2024-06-27 20:00:13,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:13,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:13,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:13,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:13,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:13,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:13,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 162 transitions, 1400 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:13,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:13,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:13,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:13,720 INFO L124 PetriNetUnfolderBase]: 329/657 cut-off events. [2024-06-27 20:00:13,720 INFO L125 PetriNetUnfolderBase]: For 22512/22512 co-relation queries the response was YES. [2024-06-27 20:00:13,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3285 conditions, 657 events. 329/657 cut-off events. For 22512/22512 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3436 event pairs, 37 based on Foata normal form. 2/659 useless extension candidates. Maximal degree in co-relation 3189. Up to 572 conditions per place. [2024-06-27 20:00:13,724 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 151 selfloop transitions, 22 changer transitions 0/176 dead transitions. [2024-06-27 20:00:13,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 176 transitions, 1786 flow [2024-06-27 20:00:13,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:13,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:13,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 20:00:13,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-27 20:00:13,725 INFO L175 Difference]: Start difference. First operand has 207 places, 162 transitions, 1400 flow. Second operand 11 states and 128 transitions. [2024-06-27 20:00:13,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 176 transitions, 1786 flow [2024-06-27 20:00:13,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 176 transitions, 1720 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-27 20:00:13,785 INFO L231 Difference]: Finished difference. Result has 212 places, 163 transitions, 1396 flow [2024-06-27 20:00:13,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1396, PETRI_PLACES=212, PETRI_TRANSITIONS=163} [2024-06-27 20:00:13,786 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2024-06-27 20:00:13,787 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 163 transitions, 1396 flow [2024-06-27 20:00:13,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:13,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:13,787 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 20:00:13,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 20:00:13,787 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:13,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:13,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1902900757, now seen corresponding path program 1 times [2024-06-27 20:00:13,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:13,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266523918] [2024-06-27 20:00:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:13,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:15,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:15,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266523918] [2024-06-27 20:00:15,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266523918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:15,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:15,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:15,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734103490] [2024-06-27 20:00:15,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:15,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:15,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:15,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:15,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:15,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:15,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 163 transitions, 1396 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:15,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:15,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:15,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:15,683 INFO L124 PetriNetUnfolderBase]: 344/690 cut-off events. [2024-06-27 20:00:15,683 INFO L125 PetriNetUnfolderBase]: For 32865/32865 co-relation queries the response was YES. [2024-06-27 20:00:15,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 690 events. 344/690 cut-off events. For 32865/32865 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3658 event pairs, 41 based on Foata normal form. 8/698 useless extension candidates. Maximal degree in co-relation 3319. Up to 576 conditions per place. [2024-06-27 20:00:15,688 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 150 selfloop transitions, 20 changer transitions 9/182 dead transitions. [2024-06-27 20:00:15,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 182 transitions, 1846 flow [2024-06-27 20:00:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:00:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:00:15,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 20:00:15,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 20:00:15,689 INFO L175 Difference]: Start difference. First operand has 212 places, 163 transitions, 1396 flow. Second operand 12 states and 140 transitions. [2024-06-27 20:00:15,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 182 transitions, 1846 flow [2024-06-27 20:00:15,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 182 transitions, 1813 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 20:00:15,761 INFO L231 Difference]: Finished difference. Result has 219 places, 162 transitions, 1396 flow [2024-06-27 20:00:15,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1396, PETRI_PLACES=219, PETRI_TRANSITIONS=162} [2024-06-27 20:00:15,761 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2024-06-27 20:00:15,761 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 162 transitions, 1396 flow [2024-06-27 20:00:15,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:15,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:15,762 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 20:00:15,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 20:00:15,762 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:15,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:15,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1909387507, now seen corresponding path program 2 times [2024-06-27 20:00:15,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:15,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316893995] [2024-06-27 20:00:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:15,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:17,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:17,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316893995] [2024-06-27 20:00:17,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316893995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:17,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:17,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:17,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088474420] [2024-06-27 20:00:17,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:17,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:17,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:17,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:17,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:17,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:17,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 162 transitions, 1396 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:17,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:17,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:17,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:17,951 INFO L124 PetriNetUnfolderBase]: 348/699 cut-off events. [2024-06-27 20:00:17,951 INFO L125 PetriNetUnfolderBase]: For 34025/34025 co-relation queries the response was YES. [2024-06-27 20:00:17,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3465 conditions, 699 events. 348/699 cut-off events. For 34025/34025 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3731 event pairs, 43 based on Foata normal form. 8/706 useless extension candidates. Maximal degree in co-relation 3364. Up to 562 conditions per place. [2024-06-27 20:00:17,955 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 148 selfloop transitions, 25 changer transitions 9/185 dead transitions. [2024-06-27 20:00:17,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 185 transitions, 1891 flow [2024-06-27 20:00:17,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:00:17,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:00:17,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-27 20:00:17,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-06-27 20:00:17,956 INFO L175 Difference]: Start difference. First operand has 219 places, 162 transitions, 1396 flow. Second operand 12 states and 142 transitions. [2024-06-27 20:00:17,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 185 transitions, 1891 flow [2024-06-27 20:00:18,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 185 transitions, 1845 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:00:18,025 INFO L231 Difference]: Finished difference. Result has 220 places, 165 transitions, 1442 flow [2024-06-27 20:00:18,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1442, PETRI_PLACES=220, PETRI_TRANSITIONS=165} [2024-06-27 20:00:18,026 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2024-06-27 20:00:18,026 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 165 transitions, 1442 flow [2024-06-27 20:00:18,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:18,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:18,026 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 20:00:18,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 20:00:18,026 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:18,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:18,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1589396201, now seen corresponding path program 3 times [2024-06-27 20:00:18,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:18,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983842946] [2024-06-27 20:00:18,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:18,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:19,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:19,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:19,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983842946] [2024-06-27 20:00:19,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983842946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:19,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:19,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:19,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855309117] [2024-06-27 20:00:19,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:19,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:19,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:19,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:19,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:19,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:19,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 165 transitions, 1442 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:19,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:19,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:19,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:19,837 INFO L124 PetriNetUnfolderBase]: 343/694 cut-off events. [2024-06-27 20:00:19,837 INFO L125 PetriNetUnfolderBase]: For 34005/34005 co-relation queries the response was YES. [2024-06-27 20:00:19,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3455 conditions, 694 events. 343/694 cut-off events. For 34005/34005 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3718 event pairs, 45 based on Foata normal form. 8/701 useless extension candidates. Maximal degree in co-relation 3353. Up to 555 conditions per place. [2024-06-27 20:00:19,842 INFO L140 encePairwiseOnDemand]: 18/30 looper letters, 149 selfloop transitions, 23 changer transitions 7/182 dead transitions. [2024-06-27 20:00:19,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 182 transitions, 1880 flow [2024-06-27 20:00:19,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:00:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:00:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-27 20:00:19,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39444444444444443 [2024-06-27 20:00:19,842 INFO L175 Difference]: Start difference. First operand has 220 places, 165 transitions, 1442 flow. Second operand 12 states and 142 transitions. [2024-06-27 20:00:19,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 182 transitions, 1880 flow [2024-06-27 20:00:19,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 182 transitions, 1829 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:19,920 INFO L231 Difference]: Finished difference. Result has 220 places, 162 transitions, 1408 flow [2024-06-27 20:00:19,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1408, PETRI_PLACES=220, PETRI_TRANSITIONS=162} [2024-06-27 20:00:19,920 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2024-06-27 20:00:19,920 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 162 transitions, 1408 flow [2024-06-27 20:00:19,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:19,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:19,920 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 20:00:19,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 20:00:19,920 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:19,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:19,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1909395877, now seen corresponding path program 4 times [2024-06-27 20:00:19,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:19,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696447969] [2024-06-27 20:00:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:19,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:20,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696447969] [2024-06-27 20:00:20,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696447969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:20,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:20,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:20,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032937848] [2024-06-27 20:00:20,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:20,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:20,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:21,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:21,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 162 transitions, 1408 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:21,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:21,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:21,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:21,356 INFO L124 PetriNetUnfolderBase]: 353/721 cut-off events. [2024-06-27 20:00:21,356 INFO L125 PetriNetUnfolderBase]: For 41032/41032 co-relation queries the response was YES. [2024-06-27 20:00:21,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3861 conditions, 721 events. 353/721 cut-off events. For 41032/41032 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3872 event pairs, 50 based on Foata normal form. 6/727 useless extension candidates. Maximal degree in co-relation 3760. Up to 552 conditions per place. [2024-06-27 20:00:21,361 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 155 selfloop transitions, 17 changer transitions 7/182 dead transitions. [2024-06-27 20:00:21,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 182 transitions, 1976 flow [2024-06-27 20:00:21,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:21,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 20:00:21,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-27 20:00:21,372 INFO L175 Difference]: Start difference. First operand has 220 places, 162 transitions, 1408 flow. Second operand 11 states and 134 transitions. [2024-06-27 20:00:21,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 182 transitions, 1976 flow [2024-06-27 20:00:21,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 182 transitions, 1920 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:00:21,476 INFO L231 Difference]: Finished difference. Result has 220 places, 160 transitions, 1370 flow [2024-06-27 20:00:21,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1370, PETRI_PLACES=220, PETRI_TRANSITIONS=160} [2024-06-27 20:00:21,477 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2024-06-27 20:00:21,477 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 160 transitions, 1370 flow [2024-06-27 20:00:21,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:21,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:21,477 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 20:00:21,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 20:00:21,478 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:21,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:21,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1284115583, now seen corresponding path program 16 times [2024-06-27 20:00:21,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:21,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59230974] [2024-06-27 20:00:21,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:21,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:22,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:22,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59230974] [2024-06-27 20:00:22,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59230974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:22,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:22,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:22,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550020002] [2024-06-27 20:00:22,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:22,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:22,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:22,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:22,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:22,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:22,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 160 transitions, 1370 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:22,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:22,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:22,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:22,629 INFO L124 PetriNetUnfolderBase]: 342/692 cut-off events. [2024-06-27 20:00:22,629 INFO L125 PetriNetUnfolderBase]: For 34583/34583 co-relation queries the response was YES. [2024-06-27 20:00:22,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3751 conditions, 692 events. 342/692 cut-off events. For 34583/34583 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 3643 event pairs, 52 based on Foata normal form. 2/694 useless extension candidates. Maximal degree in co-relation 3649. Up to 603 conditions per place. [2024-06-27 20:00:22,634 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 149 selfloop transitions, 21 changer transitions 0/173 dead transitions. [2024-06-27 20:00:22,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 173 transitions, 1764 flow [2024-06-27 20:00:22,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:22,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:22,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 20:00:22,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 20:00:22,635 INFO L175 Difference]: Start difference. First operand has 220 places, 160 transitions, 1370 flow. Second operand 10 states and 115 transitions. [2024-06-27 20:00:22,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 173 transitions, 1764 flow [2024-06-27 20:00:22,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 173 transitions, 1722 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:00:22,717 INFO L231 Difference]: Finished difference. Result has 217 places, 161 transitions, 1400 flow [2024-06-27 20:00:22,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1400, PETRI_PLACES=217, PETRI_TRANSITIONS=161} [2024-06-27 20:00:22,717 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-06-27 20:00:22,717 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 161 transitions, 1400 flow [2024-06-27 20:00:22,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:22,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:22,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:22,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 20:00:22,717 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:22,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:22,718 INFO L85 PathProgramCache]: Analyzing trace with hash -506086051, now seen corresponding path program 17 times [2024-06-27 20:00:22,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:22,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611080490] [2024-06-27 20:00:22,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:22,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:23,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:23,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:23,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611080490] [2024-06-27 20:00:23,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611080490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:23,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:23,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:23,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249998948] [2024-06-27 20:00:23,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:23,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:23,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:23,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:23,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:23,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:23,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 161 transitions, 1400 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:23,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:23,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:23,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:24,017 INFO L124 PetriNetUnfolderBase]: 346/700 cut-off events. [2024-06-27 20:00:24,017 INFO L125 PetriNetUnfolderBase]: For 34842/34842 co-relation queries the response was YES. [2024-06-27 20:00:24,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3831 conditions, 700 events. 346/700 cut-off events. For 34842/34842 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3705 event pairs, 48 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 3731. Up to 583 conditions per place. [2024-06-27 20:00:24,021 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 148 selfloop transitions, 24 changer transitions 0/175 dead transitions. [2024-06-27 20:00:24,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 175 transitions, 1802 flow [2024-06-27 20:00:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:24,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 20:00:24,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-06-27 20:00:24,022 INFO L175 Difference]: Start difference. First operand has 217 places, 161 transitions, 1400 flow. Second operand 10 states and 117 transitions. [2024-06-27 20:00:24,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 175 transitions, 1802 flow [2024-06-27 20:00:24,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 175 transitions, 1740 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 20:00:24,111 INFO L231 Difference]: Finished difference. Result has 219 places, 162 transitions, 1420 flow [2024-06-27 20:00:24,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1420, PETRI_PLACES=219, PETRI_TRANSITIONS=162} [2024-06-27 20:00:24,111 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2024-06-27 20:00:24,111 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 162 transitions, 1420 flow [2024-06-27 20:00:24,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:24,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:24,111 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 20:00:24,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 20:00:24,111 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:24,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:24,112 INFO L85 PathProgramCache]: Analyzing trace with hash 318644003, now seen corresponding path program 18 times [2024-06-27 20:00:24,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:24,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579888978] [2024-06-27 20:00:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:24,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:24,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:24,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:24,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579888978] [2024-06-27 20:00:24,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579888978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:24,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:24,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:24,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361007241] [2024-06-27 20:00:24,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:24,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:24,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:24,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:24,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:24,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:24,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 162 transitions, 1420 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:24,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:24,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:24,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:25,203 INFO L124 PetriNetUnfolderBase]: 350/708 cut-off events. [2024-06-27 20:00:25,203 INFO L125 PetriNetUnfolderBase]: For 35938/35938 co-relation queries the response was YES. [2024-06-27 20:00:25,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3902 conditions, 708 events. 350/708 cut-off events. For 35938/35938 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3766 event pairs, 50 based on Foata normal form. 2/710 useless extension candidates. Maximal degree in co-relation 3801. Up to 612 conditions per place. [2024-06-27 20:00:25,209 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 156 selfloop transitions, 18 changer transitions 0/177 dead transitions. [2024-06-27 20:00:25,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 177 transitions, 1830 flow [2024-06-27 20:00:25,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:25,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 20:00:25,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 20:00:25,210 INFO L175 Difference]: Start difference. First operand has 219 places, 162 transitions, 1420 flow. Second operand 10 states and 115 transitions. [2024-06-27 20:00:25,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 177 transitions, 1830 flow [2024-06-27 20:00:25,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 177 transitions, 1758 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 20:00:25,305 INFO L231 Difference]: Finished difference. Result has 221 places, 163 transitions, 1418 flow [2024-06-27 20:00:25,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1418, PETRI_PLACES=221, PETRI_TRANSITIONS=163} [2024-06-27 20:00:25,306 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 192 predicate places. [2024-06-27 20:00:25,306 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 163 transitions, 1418 flow [2024-06-27 20:00:25,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:25,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:25,306 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 20:00:25,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 20:00:25,306 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:25,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:25,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1284108639, now seen corresponding path program 5 times [2024-06-27 20:00:25,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:25,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957582027] [2024-06-27 20:00:25,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:25,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:26,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:26,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:26,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957582027] [2024-06-27 20:00:26,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957582027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:26,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:26,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:26,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705947570] [2024-06-27 20:00:26,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:26,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:26,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:26,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:26,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:26,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:26,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 163 transitions, 1418 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:26,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:26,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:26,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:26,809 INFO L124 PetriNetUnfolderBase]: 362/736 cut-off events. [2024-06-27 20:00:26,809 INFO L125 PetriNetUnfolderBase]: For 47462/47462 co-relation queries the response was YES. [2024-06-27 20:00:26,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3987 conditions, 736 events. 362/736 cut-off events. For 47462/47462 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 3977 event pairs, 58 based on Foata normal form. 8/744 useless extension candidates. Maximal degree in co-relation 3885. Up to 618 conditions per place. [2024-06-27 20:00:26,814 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 148 selfloop transitions, 19 changer transitions 9/179 dead transitions. [2024-06-27 20:00:26,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 179 transitions, 1848 flow [2024-06-27 20:00:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:26,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 20:00:26,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-27 20:00:26,815 INFO L175 Difference]: Start difference. First operand has 221 places, 163 transitions, 1418 flow. Second operand 11 states and 127 transitions. [2024-06-27 20:00:26,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 179 transitions, 1848 flow [2024-06-27 20:00:26,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 179 transitions, 1790 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 20:00:26,918 INFO L231 Difference]: Finished difference. Result has 224 places, 160 transitions, 1386 flow [2024-06-27 20:00:26,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1386, PETRI_PLACES=224, PETRI_TRANSITIONS=160} [2024-06-27 20:00:26,918 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 195 predicate places. [2024-06-27 20:00:26,918 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 160 transitions, 1386 flow [2024-06-27 20:00:26,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:26,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:26,918 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 20:00:26,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 20:00:26,918 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:26,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:26,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1985961019, now seen corresponding path program 19 times [2024-06-27 20:00:26,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:26,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118804131] [2024-06-27 20:00:26,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:26,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:26,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:27,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:27,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:27,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118804131] [2024-06-27 20:00:27,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118804131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:27,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:27,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:27,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825951497] [2024-06-27 20:00:27,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:27,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:27,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:27,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:27,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:27,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:27,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 160 transitions, 1386 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:27,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:27,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:27,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:28,184 INFO L124 PetriNetUnfolderBase]: 361/737 cut-off events. [2024-06-27 20:00:28,184 INFO L125 PetriNetUnfolderBase]: For 51967/51967 co-relation queries the response was YES. [2024-06-27 20:00:28,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4002 conditions, 737 events. 361/737 cut-off events. For 51967/51967 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 3981 event pairs, 58 based on Foata normal form. 10/747 useless extension candidates. Maximal degree in co-relation 3899. Up to 578 conditions per place. [2024-06-27 20:00:28,190 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 131 selfloop transitions, 35 changer transitions 6/175 dead transitions. [2024-06-27 20:00:28,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 175 transitions, 1830 flow [2024-06-27 20:00:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:28,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:28,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 20:00:28,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-06-27 20:00:28,191 INFO L175 Difference]: Start difference. First operand has 224 places, 160 transitions, 1386 flow. Second operand 10 states and 122 transitions. [2024-06-27 20:00:28,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 175 transitions, 1830 flow [2024-06-27 20:00:28,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 175 transitions, 1780 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:28,296 INFO L231 Difference]: Finished difference. Result has 221 places, 158 transitions, 1418 flow [2024-06-27 20:00:28,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1418, PETRI_PLACES=221, PETRI_TRANSITIONS=158} [2024-06-27 20:00:28,297 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 192 predicate places. [2024-06-27 20:00:28,297 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 158 transitions, 1418 flow [2024-06-27 20:00:28,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:28,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:28,297 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 20:00:28,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 20:00:28,297 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:28,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:28,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1487960779, now seen corresponding path program 20 times [2024-06-27 20:00:28,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:28,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600618458] [2024-06-27 20:00:28,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:28,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:29,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:29,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600618458] [2024-06-27 20:00:29,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600618458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:29,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:29,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:29,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128571987] [2024-06-27 20:00:29,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:29,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:29,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:29,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:29,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:29,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:29,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 158 transitions, 1418 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:29,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:29,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:29,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:29,683 INFO L124 PetriNetUnfolderBase]: 348/708 cut-off events. [2024-06-27 20:00:29,683 INFO L125 PetriNetUnfolderBase]: For 36326/36326 co-relation queries the response was YES. [2024-06-27 20:00:29,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3914 conditions, 708 events. 348/708 cut-off events. For 36326/36326 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3791 event pairs, 56 based on Foata normal form. 2/710 useless extension candidates. Maximal degree in co-relation 3812. Up to 586 conditions per place. [2024-06-27 20:00:29,688 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 131 selfloop transitions, 36 changer transitions 0/170 dead transitions. [2024-06-27 20:00:29,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 170 transitions, 1808 flow [2024-06-27 20:00:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:29,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 20:00:29,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39666666666666667 [2024-06-27 20:00:29,689 INFO L175 Difference]: Start difference. First operand has 221 places, 158 transitions, 1418 flow. Second operand 10 states and 119 transitions. [2024-06-27 20:00:29,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 170 transitions, 1808 flow [2024-06-27 20:00:29,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 170 transitions, 1654 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-27 20:00:29,785 INFO L231 Difference]: Finished difference. Result has 219 places, 159 transitions, 1374 flow [2024-06-27 20:00:29,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1374, PETRI_PLACES=219, PETRI_TRANSITIONS=159} [2024-06-27 20:00:29,785 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2024-06-27 20:00:29,785 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 159 transitions, 1374 flow [2024-06-27 20:00:29,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:29,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:29,786 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 20:00:29,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 20:00:29,786 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:29,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:29,786 INFO L85 PathProgramCache]: Analyzing trace with hash 2136338757, now seen corresponding path program 21 times [2024-06-27 20:00:29,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:29,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683162587] [2024-06-27 20:00:29,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:29,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:30,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:30,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683162587] [2024-06-27 20:00:30,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683162587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:30,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:30,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:30,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687068478] [2024-06-27 20:00:30,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:30,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:30,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:30,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:30,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:30,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:30,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 159 transitions, 1374 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:30,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:30,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:30,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:31,012 INFO L124 PetriNetUnfolderBase]: 360/740 cut-off events. [2024-06-27 20:00:31,012 INFO L125 PetriNetUnfolderBase]: For 46072/46072 co-relation queries the response was YES. [2024-06-27 20:00:31,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3950 conditions, 740 events. 360/740 cut-off events. For 46072/46072 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4004 event pairs, 58 based on Foata normal form. 8/748 useless extension candidates. Maximal degree in co-relation 3850. Up to 627 conditions per place. [2024-06-27 20:00:31,018 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 145 selfloop transitions, 15 changer transitions 11/174 dead transitions. [2024-06-27 20:00:31,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 174 transitions, 1786 flow [2024-06-27 20:00:31,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 20:00:31,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 20:00:31,019 INFO L175 Difference]: Start difference. First operand has 219 places, 159 transitions, 1374 flow. Second operand 10 states and 115 transitions. [2024-06-27 20:00:31,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 174 transitions, 1786 flow [2024-06-27 20:00:31,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 174 transitions, 1690 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 20:00:31,120 INFO L231 Difference]: Finished difference. Result has 221 places, 156 transitions, 1285 flow [2024-06-27 20:00:31,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1280, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1285, PETRI_PLACES=221, PETRI_TRANSITIONS=156} [2024-06-27 20:00:31,121 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 192 predicate places. [2024-06-27 20:00:31,121 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 156 transitions, 1285 flow [2024-06-27 20:00:31,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:31,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:31,121 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 20:00:31,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 20:00:31,121 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:31,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:31,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1214187597, now seen corresponding path program 22 times [2024-06-27 20:00:31,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:31,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673774194] [2024-06-27 20:00:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:31,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:31,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:31,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673774194] [2024-06-27 20:00:31,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673774194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:31,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:31,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:31,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323374794] [2024-06-27 20:00:31,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:31,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:31,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:31,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:31,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:32,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:32,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 156 transitions, 1285 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:32,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:32,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:32,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:32,389 INFO L124 PetriNetUnfolderBase]: 345/707 cut-off events. [2024-06-27 20:00:32,389 INFO L125 PetriNetUnfolderBase]: For 35720/35720 co-relation queries the response was YES. [2024-06-27 20:00:32,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3747 conditions, 707 events. 345/707 cut-off events. For 35720/35720 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3792 event pairs, 54 based on Foata normal form. 2/709 useless extension candidates. Maximal degree in co-relation 3646. Up to 544 conditions per place. [2024-06-27 20:00:32,394 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 128 selfloop transitions, 38 changer transitions 0/169 dead transitions. [2024-06-27 20:00:32,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 169 transitions, 1673 flow [2024-06-27 20:00:32,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 20:00:32,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 20:00:32,394 INFO L175 Difference]: Start difference. First operand has 221 places, 156 transitions, 1285 flow. Second operand 10 states and 120 transitions. [2024-06-27 20:00:32,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 169 transitions, 1673 flow [2024-06-27 20:00:32,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 169 transitions, 1633 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:32,480 INFO L231 Difference]: Finished difference. Result has 216 places, 157 transitions, 1357 flow [2024-06-27 20:00:32,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1357, PETRI_PLACES=216, PETRI_TRANSITIONS=157} [2024-06-27 20:00:32,480 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 187 predicate places. [2024-06-27 20:00:32,480 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 157 transitions, 1357 flow [2024-06-27 20:00:32,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:32,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:32,481 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 20:00:32,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 20:00:32,481 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:32,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:32,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2131754787, now seen corresponding path program 23 times [2024-06-27 20:00:32,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:32,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821865262] [2024-06-27 20:00:32,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:32,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:32,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:33,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:33,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:33,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821865262] [2024-06-27 20:00:33,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821865262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:33,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:33,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:33,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115663769] [2024-06-27 20:00:33,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:33,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:33,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:33,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:33,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:33,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:33,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 157 transitions, 1357 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:33,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:33,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:33,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:33,799 INFO L124 PetriNetUnfolderBase]: 357/735 cut-off events. [2024-06-27 20:00:33,799 INFO L125 PetriNetUnfolderBase]: For 46049/46049 co-relation queries the response was YES. [2024-06-27 20:00:33,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3922 conditions, 735 events. 357/735 cut-off events. For 46049/46049 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 3995 event pairs, 52 based on Foata normal form. 8/743 useless extension candidates. Maximal degree in co-relation 3824. Up to 591 conditions per place. [2024-06-27 20:00:33,804 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 140 selfloop transitions, 11 changer transitions 19/173 dead transitions. [2024-06-27 20:00:33,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 173 transitions, 1769 flow [2024-06-27 20:00:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 20:00:33,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 20:00:33,805 INFO L175 Difference]: Start difference. First operand has 216 places, 157 transitions, 1357 flow. Second operand 10 states and 115 transitions. [2024-06-27 20:00:33,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 173 transitions, 1769 flow [2024-06-27 20:00:33,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 173 transitions, 1669 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 20:00:33,902 INFO L231 Difference]: Finished difference. Result has 217 places, 148 transitions, 1214 flow [2024-06-27 20:00:33,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1214, PETRI_PLACES=217, PETRI_TRANSITIONS=148} [2024-06-27 20:00:33,903 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-06-27 20:00:33,903 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 148 transitions, 1214 flow [2024-06-27 20:00:33,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:33,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:33,903 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 20:00:33,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 20:00:33,903 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:33,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:33,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1985715065, now seen corresponding path program 6 times [2024-06-27 20:00:33,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:33,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103886731] [2024-06-27 20:00:33,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:33,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:35,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:35,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103886731] [2024-06-27 20:00:35,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103886731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:35,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:35,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:35,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588453982] [2024-06-27 20:00:35,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:35,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:35,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:35,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:35,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:35,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:35,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 148 transitions, 1214 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:35,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:35,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:35,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:35,597 INFO L124 PetriNetUnfolderBase]: 349/723 cut-off events. [2024-06-27 20:00:35,598 INFO L125 PetriNetUnfolderBase]: For 56068/56068 co-relation queries the response was YES. [2024-06-27 20:00:35,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4286 conditions, 723 events. 349/723 cut-off events. For 56068/56068 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3909 event pairs, 64 based on Foata normal form. 6/729 useless extension candidates. Maximal degree in co-relation 4199. Up to 461 conditions per place. [2024-06-27 20:00:35,602 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 131 selfloop transitions, 25 changer transitions 7/166 dead transitions. [2024-06-27 20:00:35,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 166 transitions, 1766 flow [2024-06-27 20:00:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:35,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:35,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 20:00:35,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-06-27 20:00:35,602 INFO L175 Difference]: Start difference. First operand has 217 places, 148 transitions, 1214 flow. Second operand 10 states and 122 transitions. [2024-06-27 20:00:35,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 166 transitions, 1766 flow [2024-06-27 20:00:35,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 166 transitions, 1726 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 20:00:35,695 INFO L231 Difference]: Finished difference. Result has 207 places, 145 transitions, 1210 flow [2024-06-27 20:00:35,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1210, PETRI_PLACES=207, PETRI_TRANSITIONS=145} [2024-06-27 20:00:35,696 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2024-06-27 20:00:35,696 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 145 transitions, 1210 flow [2024-06-27 20:00:35,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:35,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:35,696 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 20:00:35,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 20:00:35,696 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:35,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:35,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1207746913, now seen corresponding path program 7 times [2024-06-27 20:00:35,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:35,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130084767] [2024-06-27 20:00:35,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:35,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:37,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:37,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130084767] [2024-06-27 20:00:37,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130084767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:37,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:37,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:37,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817364218] [2024-06-27 20:00:37,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:37,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:37,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:37,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:37,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:37,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:37,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 145 transitions, 1210 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:37,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:37,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:37,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:37,526 INFO L124 PetriNetUnfolderBase]: 346/714 cut-off events. [2024-06-27 20:00:37,527 INFO L125 PetriNetUnfolderBase]: For 53254/53254 co-relation queries the response was YES. [2024-06-27 20:00:37,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4215 conditions, 714 events. 346/714 cut-off events. For 53254/53254 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3834 event pairs, 68 based on Foata normal form. 8/722 useless extension candidates. Maximal degree in co-relation 4131. Up to 587 conditions per place. [2024-06-27 20:00:37,532 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 124 selfloop transitions, 24 changer transitions 9/160 dead transitions. [2024-06-27 20:00:37,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 160 transitions, 1594 flow [2024-06-27 20:00:37,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:37,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 20:00:37,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-27 20:00:37,533 INFO L175 Difference]: Start difference. First operand has 207 places, 145 transitions, 1210 flow. Second operand 11 states and 127 transitions. [2024-06-27 20:00:37,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 160 transitions, 1594 flow [2024-06-27 20:00:37,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 160 transitions, 1526 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 20:00:37,623 INFO L231 Difference]: Finished difference. Result has 204 places, 142 transitions, 1167 flow [2024-06-27 20:00:37,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1167, PETRI_PLACES=204, PETRI_TRANSITIONS=142} [2024-06-27 20:00:37,623 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 175 predicate places. [2024-06-27 20:00:37,623 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 142 transitions, 1167 flow [2024-06-27 20:00:37,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:37,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:37,624 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 20:00:37,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 20:00:37,624 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:37,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:37,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1992210185, now seen corresponding path program 8 times [2024-06-27 20:00:37,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:37,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359138086] [2024-06-27 20:00:37,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:37,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:38,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:38,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:38,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359138086] [2024-06-27 20:00:38,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359138086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:38,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:38,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:38,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623254311] [2024-06-27 20:00:38,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:38,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:38,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:38,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:38,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:38,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:38,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 142 transitions, 1167 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:38,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:38,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:38,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:39,052 INFO L124 PetriNetUnfolderBase]: 342/710 cut-off events. [2024-06-27 20:00:39,052 INFO L125 PetriNetUnfolderBase]: For 58219/58219 co-relation queries the response was YES. [2024-06-27 20:00:39,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3976 conditions, 710 events. 342/710 cut-off events. For 58219/58219 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3803 event pairs, 73 based on Foata normal form. 14/724 useless extension candidates. Maximal degree in co-relation 3895. Up to 547 conditions per place. [2024-06-27 20:00:39,056 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 119 selfloop transitions, 19 changer transitions 15/156 dead transitions. [2024-06-27 20:00:39,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 156 transitions, 1541 flow [2024-06-27 20:00:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:39,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 20:00:39,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39 [2024-06-27 20:00:39,057 INFO L175 Difference]: Start difference. First operand has 204 places, 142 transitions, 1167 flow. Second operand 10 states and 117 transitions. [2024-06-27 20:00:39,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 156 transitions, 1541 flow [2024-06-27 20:00:39,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 156 transitions, 1471 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-27 20:00:39,153 INFO L231 Difference]: Finished difference. Result has 200 places, 133 transitions, 1053 flow [2024-06-27 20:00:39,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1097, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1053, PETRI_PLACES=200, PETRI_TRANSITIONS=133} [2024-06-27 20:00:39,154 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 171 predicate places. [2024-06-27 20:00:39,154 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 133 transitions, 1053 flow [2024-06-27 20:00:39,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:39,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:39,154 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 20:00:39,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 20:00:39,154 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:39,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:39,154 INFO L85 PathProgramCache]: Analyzing trace with hash 266689059, now seen corresponding path program 24 times [2024-06-27 20:00:39,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:39,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839706313] [2024-06-27 20:00:39,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:39,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:40,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:40,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:40,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839706313] [2024-06-27 20:00:40,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839706313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:40,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:40,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:40,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750278575] [2024-06-27 20:00:40,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:40,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:40,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:40,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:40,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:40,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:40,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 133 transitions, 1053 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:40,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:40,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:40,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:40,326 INFO L124 PetriNetUnfolderBase]: 307/637 cut-off events. [2024-06-27 20:00:40,326 INFO L125 PetriNetUnfolderBase]: For 39806/39806 co-relation queries the response was YES. [2024-06-27 20:00:40,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3674 conditions, 637 events. 307/637 cut-off events. For 39806/39806 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3271 event pairs, 68 based on Foata normal form. 2/639 useless extension candidates. Maximal degree in co-relation 3593. Up to 534 conditions per place. [2024-06-27 20:00:40,330 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 108 selfloop transitions, 32 changer transitions 0/143 dead transitions. [2024-06-27 20:00:40,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 143 transitions, 1381 flow [2024-06-27 20:00:40,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 20:00:40,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-27 20:00:40,331 INFO L175 Difference]: Start difference. First operand has 200 places, 133 transitions, 1053 flow. Second operand 10 states and 118 transitions. [2024-06-27 20:00:40,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 143 transitions, 1381 flow [2024-06-27 20:00:40,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 143 transitions, 1327 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-27 20:00:40,408 INFO L231 Difference]: Finished difference. Result has 192 places, 134 transitions, 1097 flow [2024-06-27 20:00:40,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1097, PETRI_PLACES=192, PETRI_TRANSITIONS=134} [2024-06-27 20:00:40,409 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 163 predicate places. [2024-06-27 20:00:40,409 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 134 transitions, 1097 flow [2024-06-27 20:00:40,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:40,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:40,409 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 20:00:40,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 20:00:40,409 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:40,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:40,409 INFO L85 PathProgramCache]: Analyzing trace with hash 266684409, now seen corresponding path program 25 times [2024-06-27 20:00:40,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:40,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766082124] [2024-06-27 20:00:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:40,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:41,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:41,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:41,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766082124] [2024-06-27 20:00:41,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766082124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:41,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:41,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:41,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118193354] [2024-06-27 20:00:41,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:41,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:41,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:41,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:41,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:41,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:41,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 134 transitions, 1097 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:41,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:41,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:41,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:41,564 INFO L124 PetriNetUnfolderBase]: 340/704 cut-off events. [2024-06-27 20:00:41,564 INFO L125 PetriNetUnfolderBase]: For 50221/50221 co-relation queries the response was YES. [2024-06-27 20:00:41,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4524 conditions, 704 events. 340/704 cut-off events. For 50221/50221 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3707 event pairs, 79 based on Foata normal form. 2/706 useless extension candidates. Maximal degree in co-relation 4446. Up to 528 conditions per place. [2024-06-27 20:00:41,569 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 113 selfloop transitions, 34 changer transitions 0/150 dead transitions. [2024-06-27 20:00:41,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 150 transitions, 1617 flow [2024-06-27 20:00:41,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:41,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:41,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 20:00:41,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-27 20:00:41,570 INFO L175 Difference]: Start difference. First operand has 192 places, 134 transitions, 1097 flow. Second operand 10 states and 123 transitions. [2024-06-27 20:00:41,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 150 transitions, 1617 flow [2024-06-27 20:00:41,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 150 transitions, 1533 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 20:00:41,680 INFO L231 Difference]: Finished difference. Result has 194 places, 136 transitions, 1139 flow [2024-06-27 20:00:41,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1139, PETRI_PLACES=194, PETRI_TRANSITIONS=136} [2024-06-27 20:00:41,680 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-27 20:00:41,680 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 136 transitions, 1139 flow [2024-06-27 20:00:41,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:41,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:41,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:41,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 20:00:41,681 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:41,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:41,681 INFO L85 PathProgramCache]: Analyzing trace with hash -607103217, now seen corresponding path program 26 times [2024-06-27 20:00:41,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:41,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814453406] [2024-06-27 20:00:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:41,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:42,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:42,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:42,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814453406] [2024-06-27 20:00:42,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814453406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:42,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:42,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:42,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251980227] [2024-06-27 20:00:42,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:42,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:42,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:42,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:42,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:42,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:42,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 136 transitions, 1139 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:42,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:42,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:42,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:43,038 INFO L124 PetriNetUnfolderBase]: 344/712 cut-off events. [2024-06-27 20:00:43,038 INFO L125 PetriNetUnfolderBase]: For 52269/52269 co-relation queries the response was YES. [2024-06-27 20:00:43,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4605 conditions, 712 events. 344/712 cut-off events. For 52269/52269 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3771 event pairs, 81 based on Foata normal form. 2/714 useless extension candidates. Maximal degree in co-relation 4526. Up to 570 conditions per place. [2024-06-27 20:00:43,043 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 103 selfloop transitions, 40 changer transitions 0/146 dead transitions. [2024-06-27 20:00:43,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 146 transitions, 1473 flow [2024-06-27 20:00:43,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:43,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:43,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 20:00:43,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 20:00:43,043 INFO L175 Difference]: Start difference. First operand has 194 places, 136 transitions, 1139 flow. Second operand 10 states and 120 transitions. [2024-06-27 20:00:43,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 146 transitions, 1473 flow [2024-06-27 20:00:43,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 146 transitions, 1405 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 20:00:43,143 INFO L231 Difference]: Finished difference. Result has 198 places, 137 transitions, 1185 flow [2024-06-27 20:00:43,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1071, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1185, PETRI_PLACES=198, PETRI_TRANSITIONS=137} [2024-06-27 20:00:43,144 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 169 predicate places. [2024-06-27 20:00:43,144 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 137 transitions, 1185 flow [2024-06-27 20:00:43,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:43,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:43,144 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 20:00:43,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 20:00:43,144 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:43,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:43,144 INFO L85 PathProgramCache]: Analyzing trace with hash -613359327, now seen corresponding path program 27 times [2024-06-27 20:00:43,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:43,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640217754] [2024-06-27 20:00:43,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:43,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:44,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:44,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:44,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640217754] [2024-06-27 20:00:44,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640217754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:44,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:44,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:44,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599824233] [2024-06-27 20:00:44,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:44,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:44,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:44,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:44,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:44,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:44,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 137 transitions, 1185 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:44,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:44,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:44,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:44,597 INFO L124 PetriNetUnfolderBase]: 348/720 cut-off events. [2024-06-27 20:00:44,597 INFO L125 PetriNetUnfolderBase]: For 54263/54263 co-relation queries the response was YES. [2024-06-27 20:00:44,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4725 conditions, 720 events. 348/720 cut-off events. For 54263/54263 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3820 event pairs, 83 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 4644. Up to 540 conditions per place. [2024-06-27 20:00:44,602 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 86 selfloop transitions, 58 changer transitions 0/147 dead transitions. [2024-06-27 20:00:44,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 147 transitions, 1523 flow [2024-06-27 20:00:44,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 20:00:44,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41 [2024-06-27 20:00:44,603 INFO L175 Difference]: Start difference. First operand has 198 places, 137 transitions, 1185 flow. Second operand 10 states and 123 transitions. [2024-06-27 20:00:44,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 147 transitions, 1523 flow [2024-06-27 20:00:44,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 147 transitions, 1419 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 20:00:44,720 INFO L231 Difference]: Finished difference. Result has 200 places, 138 transitions, 1233 flow [2024-06-27 20:00:44,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1233, PETRI_PLACES=200, PETRI_TRANSITIONS=138} [2024-06-27 20:00:44,720 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 171 predicate places. [2024-06-27 20:00:44,720 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 138 transitions, 1233 flow [2024-06-27 20:00:44,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:44,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:44,720 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 20:00:44,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 20:00:44,721 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:44,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:44,721 INFO L85 PathProgramCache]: Analyzing trace with hash 273118149, now seen corresponding path program 28 times [2024-06-27 20:00:44,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:44,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860355646] [2024-06-27 20:00:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:44,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:45,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:45,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860355646] [2024-06-27 20:00:45,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860355646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:45,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:45,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:45,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378626775] [2024-06-27 20:00:45,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:45,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:45,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:45,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:45,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:45,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:45,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 138 transitions, 1233 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:45,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:45,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:45,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:45,868 INFO L124 PetriNetUnfolderBase]: 335/697 cut-off events. [2024-06-27 20:00:45,868 INFO L125 PetriNetUnfolderBase]: For 52637/52637 co-relation queries the response was YES. [2024-06-27 20:00:45,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4078 conditions, 697 events. 335/697 cut-off events. For 52637/52637 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3690 event pairs, 74 based on Foata normal form. 10/707 useless extension candidates. Maximal degree in co-relation 3996. Up to 562 conditions per place. [2024-06-27 20:00:45,873 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 113 selfloop transitions, 28 changer transitions 6/150 dead transitions. [2024-06-27 20:00:45,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 150 transitions, 1589 flow [2024-06-27 20:00:45,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-27 20:00:45,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 20:00:45,874 INFO L175 Difference]: Start difference. First operand has 200 places, 138 transitions, 1233 flow. Second operand 10 states and 120 transitions. [2024-06-27 20:00:45,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 150 transitions, 1589 flow [2024-06-27 20:00:45,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 150 transitions, 1431 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 20:00:45,978 INFO L231 Difference]: Finished difference. Result has 202 places, 135 transitions, 1115 flow [2024-06-27 20:00:45,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1115, PETRI_PLACES=202, PETRI_TRANSITIONS=135} [2024-06-27 20:00:45,978 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 173 predicate places. [2024-06-27 20:00:45,978 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 135 transitions, 1115 flow [2024-06-27 20:00:45,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:45,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:45,978 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 20:00:45,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 20:00:45,978 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:45,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:45,979 INFO L85 PathProgramCache]: Analyzing trace with hash 236357463, now seen corresponding path program 29 times [2024-06-27 20:00:45,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:45,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692782855] [2024-06-27 20:00:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:45,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:47,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:47,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:47,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692782855] [2024-06-27 20:00:47,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692782855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:47,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:47,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:47,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596271461] [2024-06-27 20:00:47,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:47,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:47,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:47,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:47,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:47,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:47,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 135 transitions, 1115 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:47,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:47,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:47,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:47,721 INFO L124 PetriNetUnfolderBase]: 329/681 cut-off events. [2024-06-27 20:00:47,721 INFO L125 PetriNetUnfolderBase]: For 45123/45123 co-relation queries the response was YES. [2024-06-27 20:00:47,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4105 conditions, 681 events. 329/681 cut-off events. For 45123/45123 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3576 event pairs, 71 based on Foata normal form. 2/683 useless extension candidates. Maximal degree in co-relation 4022. Up to 512 conditions per place. [2024-06-27 20:00:47,726 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 101 selfloop transitions, 44 changer transitions 0/148 dead transitions. [2024-06-27 20:00:47,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 148 transitions, 1609 flow [2024-06-27 20:00:47,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:47,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-27 20:00:47,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033333333333333 [2024-06-27 20:00:47,727 INFO L175 Difference]: Start difference. First operand has 202 places, 135 transitions, 1115 flow. Second operand 10 states and 121 transitions. [2024-06-27 20:00:47,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 148 transitions, 1609 flow [2024-06-27 20:00:47,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 148 transitions, 1521 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:00:47,827 INFO L231 Difference]: Finished difference. Result has 201 places, 137 transitions, 1185 flow [2024-06-27 20:00:47,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1185, PETRI_PLACES=201, PETRI_TRANSITIONS=137} [2024-06-27 20:00:47,827 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-27 20:00:47,827 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 137 transitions, 1185 flow [2024-06-27 20:00:47,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:47,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:47,828 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 20:00:47,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 20:00:47,828 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:47,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:47,828 INFO L85 PathProgramCache]: Analyzing trace with hash 100450629, now seen corresponding path program 30 times [2024-06-27 20:00:47,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:47,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562350872] [2024-06-27 20:00:47,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:47,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:48,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:48,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:48,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562350872] [2024-06-27 20:00:48,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562350872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:48,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:48,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:48,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607635423] [2024-06-27 20:00:48,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:48,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:48,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:48,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:48,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:48,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:48,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 137 transitions, 1185 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:48,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:48,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:48,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:49,118 INFO L124 PetriNetUnfolderBase]: 341/709 cut-off events. [2024-06-27 20:00:49,118 INFO L125 PetriNetUnfolderBase]: For 56253/56253 co-relation queries the response was YES. [2024-06-27 20:00:49,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4271 conditions, 709 events. 341/709 cut-off events. For 56253/56253 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3763 event pairs, 73 based on Foata normal form. 8/717 useless extension candidates. Maximal degree in co-relation 4188. Up to 603 conditions per place. [2024-06-27 20:00:49,123 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 122 selfloop transitions, 14 changer transitions 11/150 dead transitions. [2024-06-27 20:00:49,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 150 transitions, 1547 flow [2024-06-27 20:00:49,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 20:00:49,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-27 20:00:49,124 INFO L175 Difference]: Start difference. First operand has 201 places, 137 transitions, 1185 flow. Second operand 10 states and 113 transitions. [2024-06-27 20:00:49,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 150 transitions, 1547 flow [2024-06-27 20:00:49,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 150 transitions, 1458 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 20:00:49,225 INFO L231 Difference]: Finished difference. Result has 205 places, 134 transitions, 1105 flow [2024-06-27 20:00:49,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1096, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1105, PETRI_PLACES=205, PETRI_TRANSITIONS=134} [2024-06-27 20:00:49,225 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-06-27 20:00:49,225 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 134 transitions, 1105 flow [2024-06-27 20:00:49,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:49,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:49,225 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 20:00:49,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 20:00:49,225 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:49,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:49,226 INFO L85 PathProgramCache]: Analyzing trace with hash -395627579, now seen corresponding path program 31 times [2024-06-27 20:00:49,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:49,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254230791] [2024-06-27 20:00:49,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:49,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:50,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:50,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:50,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254230791] [2024-06-27 20:00:50,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254230791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:50,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:50,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:50,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134819837] [2024-06-27 20:00:50,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:50,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:50,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:50,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:50,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:50,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:50,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 134 transitions, 1105 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:50,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:50,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:50,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:50,622 INFO L124 PetriNetUnfolderBase]: 319/662 cut-off events. [2024-06-27 20:00:50,622 INFO L125 PetriNetUnfolderBase]: For 44067/44067 co-relation queries the response was YES. [2024-06-27 20:00:50,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3878 conditions, 662 events. 319/662 cut-off events. For 44067/44067 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3442 event pairs, 110 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 3793. Up to 603 conditions per place. [2024-06-27 20:00:50,626 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 125 selfloop transitions, 16 changer transitions 0/144 dead transitions. [2024-06-27 20:00:50,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 144 transitions, 1409 flow [2024-06-27 20:00:50,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 20:00:50,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-27 20:00:50,627 INFO L175 Difference]: Start difference. First operand has 205 places, 134 transitions, 1105 flow. Second operand 10 states and 113 transitions. [2024-06-27 20:00:50,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 144 transitions, 1409 flow [2024-06-27 20:00:50,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 144 transitions, 1330 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 20:00:50,718 INFO L231 Difference]: Finished difference. Result has 200 places, 134 transitions, 1062 flow [2024-06-27 20:00:50,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1062, PETRI_PLACES=200, PETRI_TRANSITIONS=134} [2024-06-27 20:00:50,719 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 171 predicate places. [2024-06-27 20:00:50,719 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 134 transitions, 1062 flow [2024-06-27 20:00:50,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:50,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:50,719 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 20:00:50,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 20:00:50,719 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:50,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:50,719 INFO L85 PathProgramCache]: Analyzing trace with hash -38624817, now seen corresponding path program 32 times [2024-06-27 20:00:50,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:50,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441060253] [2024-06-27 20:00:50,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:50,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:51,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:51,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441060253] [2024-06-27 20:00:51,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441060253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:51,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:51,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:51,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309659756] [2024-06-27 20:00:51,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:51,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:51,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:51,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:51,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:51,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:51,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 134 transitions, 1062 flow. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:51,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:51,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:51,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:51,967 INFO L124 PetriNetUnfolderBase]: 324/678 cut-off events. [2024-06-27 20:00:51,968 INFO L125 PetriNetUnfolderBase]: For 47839/47839 co-relation queries the response was YES. [2024-06-27 20:00:51,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3701 conditions, 678 events. 324/678 cut-off events. For 47839/47839 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3555 event pairs, 67 based on Foata normal form. 8/686 useless extension candidates. Maximal degree in co-relation 3618. Up to 567 conditions per place. [2024-06-27 20:00:51,972 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 118 selfloop transitions, 12 changer transitions 14/147 dead transitions. [2024-06-27 20:00:51,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 147 transitions, 1386 flow [2024-06-27 20:00:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:51,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:51,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 20:00:51,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37666666666666665 [2024-06-27 20:00:51,973 INFO L175 Difference]: Start difference. First operand has 200 places, 134 transitions, 1062 flow. Second operand 10 states and 113 transitions. [2024-06-27 20:00:51,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 147 transitions, 1386 flow [2024-06-27 20:00:52,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 147 transitions, 1344 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 20:00:52,083 INFO L231 Difference]: Finished difference. Result has 201 places, 129 transitions, 992 flow [2024-06-27 20:00:52,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=992, PETRI_PLACES=201, PETRI_TRANSITIONS=129} [2024-06-27 20:00:52,084 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 172 predicate places. [2024-06-27 20:00:52,084 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 129 transitions, 992 flow [2024-06-27 20:00:52,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:52,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:52,084 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 20:00:52,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 20:00:52,084 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:52,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:52,085 INFO L85 PathProgramCache]: Analyzing trace with hash -395620635, now seen corresponding path program 9 times [2024-06-27 20:00:52,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:52,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003938014] [2024-06-27 20:00:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:52,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:52,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:53,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:53,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003938014] [2024-06-27 20:00:53,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003938014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:53,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:53,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:53,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020005787] [2024-06-27 20:00:53,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:53,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:53,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:53,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:53,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:53,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:53,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 129 transitions, 992 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:53,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:53,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:53,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:53,919 INFO L124 PetriNetUnfolderBase]: 313/654 cut-off events. [2024-06-27 20:00:53,919 INFO L125 PetriNetUnfolderBase]: For 49688/49688 co-relation queries the response was YES. [2024-06-27 20:00:53,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3624 conditions, 654 events. 313/654 cut-off events. For 49688/49688 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 3409 event pairs, 109 based on Foata normal form. 8/661 useless extension candidates. Maximal degree in co-relation 3540. Up to 562 conditions per place. [2024-06-27 20:00:53,923 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 118 selfloop transitions, 15 changer transitions 7/143 dead transitions. [2024-06-27 20:00:53,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 143 transitions, 1338 flow [2024-06-27 20:00:53,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:53,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:53,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 20:00:53,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 20:00:53,924 INFO L175 Difference]: Start difference. First operand has 201 places, 129 transitions, 992 flow. Second operand 11 states and 126 transitions. [2024-06-27 20:00:53,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 143 transitions, 1338 flow [2024-06-27 20:00:54,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 143 transitions, 1226 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:00:54,027 INFO L231 Difference]: Finished difference. Result has 194 places, 126 transitions, 898 flow [2024-06-27 20:00:54,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=898, PETRI_PLACES=194, PETRI_TRANSITIONS=126} [2024-06-27 20:00:54,027 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2024-06-27 20:00:54,028 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 126 transitions, 898 flow [2024-06-27 20:00:54,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:54,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:54,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:54,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 20:00:54,028 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:54,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:54,028 INFO L85 PathProgramCache]: Analyzing trace with hash 236542037, now seen corresponding path program 10 times [2024-06-27 20:00:54,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:54,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227709329] [2024-06-27 20:00:54,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:54,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:55,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:55,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:55,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227709329] [2024-06-27 20:00:55,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227709329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:55,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:55,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:00:55,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608131272] [2024-06-27 20:00:55,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:55,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:00:55,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:55,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:00:55,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:00:55,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:55,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 126 transitions, 898 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:55,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:55,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:55,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:55,542 INFO L124 PetriNetUnfolderBase]: 308/648 cut-off events. [2024-06-27 20:00:55,542 INFO L125 PetriNetUnfolderBase]: For 47250/47250 co-relation queries the response was YES. [2024-06-27 20:00:55,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3416 conditions, 648 events. 308/648 cut-off events. For 47250/47250 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3393 event pairs, 71 based on Foata normal form. 8/656 useless extension candidates. Maximal degree in co-relation 3336. Up to 448 conditions per place. [2024-06-27 20:00:55,546 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 80 selfloop transitions, 43 changer transitions 12/138 dead transitions. [2024-06-27 20:00:55,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 138 transitions, 1228 flow [2024-06-27 20:00:55,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:00:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:00:55,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-27 20:00:55,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2024-06-27 20:00:55,547 INFO L175 Difference]: Start difference. First operand has 194 places, 126 transitions, 898 flow. Second operand 10 states and 124 transitions. [2024-06-27 20:00:55,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 138 transitions, 1228 flow [2024-06-27 20:00:55,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 138 transitions, 1192 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 20:00:55,636 INFO L231 Difference]: Finished difference. Result has 191 places, 120 transitions, 918 flow [2024-06-27 20:00:55,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=862, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=918, PETRI_PLACES=191, PETRI_TRANSITIONS=120} [2024-06-27 20:00:55,636 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 162 predicate places. [2024-06-27 20:00:55,636 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 120 transitions, 918 flow [2024-06-27 20:00:55,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:55,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:55,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:00:55,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 20:00:55,636 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:55,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:55,637 INFO L85 PathProgramCache]: Analyzing trace with hash 273125093, now seen corresponding path program 11 times [2024-06-27 20:00:55,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:55,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914847622] [2024-06-27 20:00:55,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:55,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:56,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:56,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:56,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914847622] [2024-06-27 20:00:56,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914847622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:56,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:56,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:56,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105322238] [2024-06-27 20:00:56,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:56,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:56,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:56,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:56,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:56,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:56,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 120 transitions, 918 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:56,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:56,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:56,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:57,051 INFO L124 PetriNetUnfolderBase]: 296/628 cut-off events. [2024-06-27 20:00:57,051 INFO L125 PetriNetUnfolderBase]: For 44860/44860 co-relation queries the response was YES. [2024-06-27 20:00:57,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3376 conditions, 628 events. 296/628 cut-off events. For 44860/44860 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3271 event pairs, 71 based on Foata normal form. 8/636 useless extension candidates. Maximal degree in co-relation 3297. Up to 502 conditions per place. [2024-06-27 20:00:57,055 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 98 selfloop transitions, 19 changer transitions 13/133 dead transitions. [2024-06-27 20:00:57,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 133 transitions, 1240 flow [2024-06-27 20:00:57,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:57,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:57,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 20:00:57,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-27 20:00:57,056 INFO L175 Difference]: Start difference. First operand has 191 places, 120 transitions, 918 flow. Second operand 11 states and 127 transitions. [2024-06-27 20:00:57,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 133 transitions, 1240 flow [2024-06-27 20:00:57,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 133 transitions, 1146 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:00:57,138 INFO L231 Difference]: Finished difference. Result has 186 places, 114 transitions, 832 flow [2024-06-27 20:00:57,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=832, PETRI_PLACES=186, PETRI_TRANSITIONS=114} [2024-06-27 20:00:57,139 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 157 predicate places. [2024-06-27 20:00:57,139 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 114 transitions, 832 flow [2024-06-27 20:00:57,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:57,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:57,139 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 20:00:57,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 20:00:57,140 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:57,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:57,140 INFO L85 PathProgramCache]: Analyzing trace with hash -606865633, now seen corresponding path program 12 times [2024-06-27 20:00:57,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:57,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448650267] [2024-06-27 20:00:57,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:57,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:00:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:00:58,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:00:58,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448650267] [2024-06-27 20:00:58,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448650267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:00:58,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:00:58,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:00:58,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99671459] [2024-06-27 20:00:58,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:00:58,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:00:58,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:00:58,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:00:58,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:00:58,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:00:58,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 114 transitions, 832 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:58,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:00:58,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:00:58,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:00:58,828 INFO L124 PetriNetUnfolderBase]: 284/606 cut-off events. [2024-06-27 20:00:58,828 INFO L125 PetriNetUnfolderBase]: For 40189/40189 co-relation queries the response was YES. [2024-06-27 20:00:58,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3193 conditions, 606 events. 284/606 cut-off events. For 40189/40189 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3122 event pairs, 71 based on Foata normal form. 8/614 useless extension candidates. Maximal degree in co-relation 3117. Up to 447 conditions per place. [2024-06-27 20:00:58,832 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 83 selfloop transitions, 32 changer transitions 9/127 dead transitions. [2024-06-27 20:00:58,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 127 transitions, 1142 flow [2024-06-27 20:00:58,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:00:58,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:00:58,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 20:00:58,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-27 20:00:58,836 INFO L175 Difference]: Start difference. First operand has 186 places, 114 transitions, 832 flow. Second operand 11 states and 131 transitions. [2024-06-27 20:00:58,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 127 transitions, 1142 flow [2024-06-27 20:00:58,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 127 transitions, 1096 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:00:58,911 INFO L231 Difference]: Finished difference. Result has 180 places, 111 transitions, 835 flow [2024-06-27 20:00:58,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=835, PETRI_PLACES=180, PETRI_TRANSITIONS=111} [2024-06-27 20:00:58,911 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 151 predicate places. [2024-06-27 20:00:58,911 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 111 transitions, 835 flow [2024-06-27 20:00:58,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:00:58,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:00:58,912 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 20:00:58,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 20:00:58,912 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:00:58,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:00:58,912 INFO L85 PathProgramCache]: Analyzing trace with hash -607096273, now seen corresponding path program 13 times [2024-06-27 20:00:58,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:00:58,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654824436] [2024-06-27 20:00:58,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:00:58,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:00:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:00,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:00,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:00,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654824436] [2024-06-27 20:01:00,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654824436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:00,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:00,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:00,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866330280] [2024-06-27 20:01:00,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:00,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:00,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:00,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:00,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:00,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:00,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 111 transitions, 835 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:00,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:00,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:00,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:00,493 INFO L124 PetriNetUnfolderBase]: 279/601 cut-off events. [2024-06-27 20:01:00,493 INFO L125 PetriNetUnfolderBase]: For 35931/35931 co-relation queries the response was YES. [2024-06-27 20:01:00,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3130 conditions, 601 events. 279/601 cut-off events. For 35931/35931 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3109 event pairs, 73 based on Foata normal form. 8/609 useless extension candidates. Maximal degree in co-relation 3057. Up to 416 conditions per place. [2024-06-27 20:01:00,497 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 77 selfloop transitions, 31 changer transitions 13/124 dead transitions. [2024-06-27 20:01:00,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 124 transitions, 1139 flow [2024-06-27 20:01:00,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:00,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:00,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-27 20:01:00,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-27 20:01:00,500 INFO L175 Difference]: Start difference. First operand has 180 places, 111 transitions, 835 flow. Second operand 11 states and 133 transitions. [2024-06-27 20:01:00,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 124 transitions, 1139 flow [2024-06-27 20:01:00,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 124 transitions, 1052 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 20:01:00,556 INFO L231 Difference]: Finished difference. Result has 178 places, 105 transitions, 782 flow [2024-06-27 20:01:00,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=782, PETRI_PLACES=178, PETRI_TRANSITIONS=105} [2024-06-27 20:01:00,556 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 149 predicate places. [2024-06-27 20:01:00,556 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 105 transitions, 782 flow [2024-06-27 20:01:00,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:00,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:00,557 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 20:01:00,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 20:01:00,557 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:00,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:00,557 INFO L85 PathProgramCache]: Analyzing trace with hash -606857263, now seen corresponding path program 14 times [2024-06-27 20:01:00,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:00,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970902012] [2024-06-27 20:01:00,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:00,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:01,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:01,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970902012] [2024-06-27 20:01:01,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970902012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:01,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:01,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:01,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437335420] [2024-06-27 20:01:01,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:01,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:01,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:01,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:01,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:01,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:01,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 105 transitions, 782 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:01,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:01,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:01,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:02,165 INFO L124 PetriNetUnfolderBase]: 263/575 cut-off events. [2024-06-27 20:01:02,165 INFO L125 PetriNetUnfolderBase]: For 33273/33273 co-relation queries the response was YES. [2024-06-27 20:01:02,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 575 events. 263/575 cut-off events. For 33273/33273 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2957 event pairs, 69 based on Foata normal form. 6/581 useless extension candidates. Maximal degree in co-relation 2921. Up to 423 conditions per place. [2024-06-27 20:01:02,169 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 78 selfloop transitions, 25 changer transitions 12/118 dead transitions. [2024-06-27 20:01:02,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 118 transitions, 1066 flow [2024-06-27 20:01:02,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:02,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:02,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 20:01:02,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-27 20:01:02,170 INFO L175 Difference]: Start difference. First operand has 178 places, 105 transitions, 782 flow. Second operand 11 states and 126 transitions. [2024-06-27 20:01:02,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 118 transitions, 1066 flow [2024-06-27 20:01:02,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 118 transitions, 996 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:01:02,226 INFO L231 Difference]: Finished difference. Result has 172 places, 101 transitions, 746 flow [2024-06-27 20:01:02,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=746, PETRI_PLACES=172, PETRI_TRANSITIONS=101} [2024-06-27 20:01:02,226 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 143 predicate places. [2024-06-27 20:01:02,226 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 101 transitions, 746 flow [2024-06-27 20:01:02,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:02,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:02,227 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 20:01:02,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 20:01:02,227 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:02,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:02,227 INFO L85 PathProgramCache]: Analyzing trace with hash -576530317, now seen corresponding path program 15 times [2024-06-27 20:01:02,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:02,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097749479] [2024-06-27 20:01:02,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:02,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:03,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:03,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:03,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097749479] [2024-06-27 20:01:03,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097749479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:03,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:03,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:03,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754471570] [2024-06-27 20:01:03,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:03,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:03,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:03,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:03,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:03,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:03,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 101 transitions, 746 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:03,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:03,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:03,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:03,700 INFO L124 PetriNetUnfolderBase]: 277/605 cut-off events. [2024-06-27 20:01:03,701 INFO L125 PetriNetUnfolderBase]: For 38186/38186 co-relation queries the response was YES. [2024-06-27 20:01:03,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3448 conditions, 605 events. 277/605 cut-off events. For 38186/38186 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3134 event pairs, 85 based on Foata normal form. 6/611 useless extension candidates. Maximal degree in co-relation 3379. Up to 429 conditions per place. [2024-06-27 20:01:03,705 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 85 selfloop transitions, 22 changer transitions 8/118 dead transitions. [2024-06-27 20:01:03,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 118 transitions, 1168 flow [2024-06-27 20:01:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-27 20:01:03,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-27 20:01:03,705 INFO L175 Difference]: Start difference. First operand has 172 places, 101 transitions, 746 flow. Second operand 11 states and 129 transitions. [2024-06-27 20:01:03,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 118 transitions, 1168 flow [2024-06-27 20:01:03,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 118 transitions, 1106 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 20:01:03,775 INFO L231 Difference]: Finished difference. Result has 167 places, 97 transitions, 719 flow [2024-06-27 20:01:03,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=719, PETRI_PLACES=167, PETRI_TRANSITIONS=97} [2024-06-27 20:01:03,775 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 138 predicate places. [2024-06-27 20:01:03,775 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 97 transitions, 719 flow [2024-06-27 20:01:03,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:03,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:03,775 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 20:01:03,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 20:01:03,775 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:03,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:03,776 INFO L85 PathProgramCache]: Analyzing trace with hash 266868983, now seen corresponding path program 16 times [2024-06-27 20:01:03,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:03,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070772854] [2024-06-27 20:01:03,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:03,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:05,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:05,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070772854] [2024-06-27 20:01:05,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070772854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:05,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:05,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:05,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414277965] [2024-06-27 20:01:05,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:05,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:05,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:05,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:05,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:05,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:05,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 97 transitions, 719 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:05,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:05,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:05,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:05,878 INFO L124 PetriNetUnfolderBase]: 251/547 cut-off events. [2024-06-27 20:01:05,878 INFO L125 PetriNetUnfolderBase]: For 29263/29263 co-relation queries the response was YES. [2024-06-27 20:01:05,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2803 conditions, 547 events. 251/547 cut-off events. For 29263/29263 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2746 event pairs, 73 based on Foata normal form. 8/555 useless extension candidates. Maximal degree in co-relation 2736. Up to 439 conditions per place. [2024-06-27 20:01:05,882 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 83 selfloop transitions, 17 changer transitions 7/110 dead transitions. [2024-06-27 20:01:05,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 110 transitions, 995 flow [2024-06-27 20:01:05,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:05,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 20:01:05,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37272727272727274 [2024-06-27 20:01:05,883 INFO L175 Difference]: Start difference. First operand has 167 places, 97 transitions, 719 flow. Second operand 11 states and 123 transitions. [2024-06-27 20:01:05,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 110 transitions, 995 flow [2024-06-27 20:01:05,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 110 transitions, 939 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 20:01:05,934 INFO L231 Difference]: Finished difference. Result has 163 places, 94 transitions, 688 flow [2024-06-27 20:01:05,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=688, PETRI_PLACES=163, PETRI_TRANSITIONS=94} [2024-06-27 20:01:05,935 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 134 predicate places. [2024-06-27 20:01:05,935 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 94 transitions, 688 flow [2024-06-27 20:01:05,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:05,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:05,935 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 20:01:05,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 20:01:05,936 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:05,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:05,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1245276045, now seen corresponding path program 17 times [2024-06-27 20:01:05,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:05,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666155778] [2024-06-27 20:01:05,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:05,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:07,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:07,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666155778] [2024-06-27 20:01:07,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666155778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:07,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:07,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:07,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295797739] [2024-06-27 20:01:07,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:07,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:07,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:07,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:07,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:07,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:07,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 94 transitions, 688 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:07,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:07,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:07,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:07,937 INFO L124 PetriNetUnfolderBase]: 274/601 cut-off events. [2024-06-27 20:01:07,937 INFO L125 PetriNetUnfolderBase]: For 32300/32300 co-relation queries the response was YES. [2024-06-27 20:01:07,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3271 conditions, 601 events. 274/601 cut-off events. For 32300/32300 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3118 event pairs, 119 based on Foata normal form. 6/606 useless extension candidates. Maximal degree in co-relation 3206. Up to 450 conditions per place. [2024-06-27 20:01:07,941 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 93 selfloop transitions, 15 changer transitions 6/117 dead transitions. [2024-06-27 20:01:07,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 117 transitions, 1125 flow [2024-06-27 20:01:07,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:07,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 20:01:07,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-27 20:01:07,941 INFO L175 Difference]: Start difference. First operand has 163 places, 94 transitions, 688 flow. Second operand 11 states and 131 transitions. [2024-06-27 20:01:07,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 117 transitions, 1125 flow [2024-06-27 20:01:08,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 117 transitions, 1081 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:01:08,009 INFO L231 Difference]: Finished difference. Result has 162 places, 96 transitions, 706 flow [2024-06-27 20:01:08,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=706, PETRI_PLACES=162, PETRI_TRANSITIONS=96} [2024-06-27 20:01:08,012 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2024-06-27 20:01:08,012 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 96 transitions, 706 flow [2024-06-27 20:01:08,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:08,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:08,012 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 20:01:08,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 20:01:08,013 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:08,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:08,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1245284415, now seen corresponding path program 18 times [2024-06-27 20:01:08,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:08,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77516806] [2024-06-27 20:01:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:08,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:09,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:09,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:09,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77516806] [2024-06-27 20:01:09,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77516806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:09,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:09,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:01:09,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838006921] [2024-06-27 20:01:09,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:09,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:01:09,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:09,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:01:09,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:01:09,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:09,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 96 transitions, 706 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:09,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:09,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:09,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:09,507 INFO L124 PetriNetUnfolderBase]: 277/610 cut-off events. [2024-06-27 20:01:09,508 INFO L125 PetriNetUnfolderBase]: For 39115/39115 co-relation queries the response was YES. [2024-06-27 20:01:09,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3173 conditions, 610 events. 277/610 cut-off events. For 39115/39115 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3220 event pairs, 126 based on Foata normal form. 16/625 useless extension candidates. Maximal degree in co-relation 3107. Up to 474 conditions per place. [2024-06-27 20:01:09,511 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 81 selfloop transitions, 16 changer transitions 9/109 dead transitions. [2024-06-27 20:01:09,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 109 transitions, 976 flow [2024-06-27 20:01:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:01:09,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:01:09,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 20:01:09,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933333333333333 [2024-06-27 20:01:09,512 INFO L175 Difference]: Start difference. First operand has 162 places, 96 transitions, 706 flow. Second operand 10 states and 118 transitions. [2024-06-27 20:01:09,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 109 transitions, 976 flow [2024-06-27 20:01:09,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 109 transitions, 943 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 20:01:09,569 INFO L231 Difference]: Finished difference. Result has 162 places, 90 transitions, 665 flow [2024-06-27 20:01:09,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=665, PETRI_PLACES=162, PETRI_TRANSITIONS=90} [2024-06-27 20:01:09,570 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 133 predicate places. [2024-06-27 20:01:09,570 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 90 transitions, 665 flow [2024-06-27 20:01:09,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:09,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:09,570 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 20:01:09,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 20:01:09,571 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:09,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:09,571 INFO L85 PathProgramCache]: Analyzing trace with hash -960176175, now seen corresponding path program 19 times [2024-06-27 20:01:09,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:09,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739591270] [2024-06-27 20:01:09,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:09,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:10,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:10,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739591270] [2024-06-27 20:01:10,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739591270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:10,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:10,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:10,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223263871] [2024-06-27 20:01:10,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:10,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:10,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:10,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:10,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:10,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:10,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 90 transitions, 665 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:10,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:10,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:10,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:11,291 INFO L124 PetriNetUnfolderBase]: 250/557 cut-off events. [2024-06-27 20:01:11,291 INFO L125 PetriNetUnfolderBase]: For 29270/29270 co-relation queries the response was YES. [2024-06-27 20:01:11,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2960 conditions, 557 events. 250/557 cut-off events. For 29270/29270 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2835 event pairs, 120 based on Foata normal form. 6/562 useless extension candidates. Maximal degree in co-relation 2895. Up to 470 conditions per place. [2024-06-27 20:01:11,294 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 79 selfloop transitions, 13 changer transitions 10/105 dead transitions. [2024-06-27 20:01:11,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 105 transitions, 925 flow [2024-06-27 20:01:11,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:01:11,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:01:11,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-27 20:01:11,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36944444444444446 [2024-06-27 20:01:11,295 INFO L175 Difference]: Start difference. First operand has 162 places, 90 transitions, 665 flow. Second operand 12 states and 133 transitions. [2024-06-27 20:01:11,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 105 transitions, 925 flow [2024-06-27 20:01:11,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 105 transitions, 881 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-06-27 20:01:11,352 INFO L231 Difference]: Finished difference. Result has 160 places, 87 transitions, 633 flow [2024-06-27 20:01:11,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=633, PETRI_PLACES=160, PETRI_TRANSITIONS=87} [2024-06-27 20:01:11,352 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 131 predicate places. [2024-06-27 20:01:11,352 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 87 transitions, 633 flow [2024-06-27 20:01:11,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:11,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:11,352 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 20:01:11,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 20:01:11,352 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:11,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:11,353 INFO L85 PathProgramCache]: Analyzing trace with hash -950056845, now seen corresponding path program 20 times [2024-06-27 20:01:11,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:11,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327733726] [2024-06-27 20:01:11,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:11,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:12,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:12,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:12,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327733726] [2024-06-27 20:01:12,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327733726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:12,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:12,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:12,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159004230] [2024-06-27 20:01:12,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:12,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:12,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:12,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:12,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:12,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:12,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 87 transitions, 633 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:12,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:12,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:12,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:13,113 INFO L124 PetriNetUnfolderBase]: 236/527 cut-off events. [2024-06-27 20:01:13,113 INFO L125 PetriNetUnfolderBase]: For 27186/27186 co-relation queries the response was YES. [2024-06-27 20:01:13,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2712 conditions, 527 events. 236/527 cut-off events. For 27186/27186 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2615 event pairs, 115 based on Foata normal form. 6/532 useless extension candidates. Maximal degree in co-relation 2649. Up to 439 conditions per place. [2024-06-27 20:01:13,116 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 75 selfloop transitions, 11 changer transitions 13/102 dead transitions. [2024-06-27 20:01:13,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 102 transitions, 863 flow [2024-06-27 20:01:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:01:13,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:01:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 20:01:13,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 20:01:13,117 INFO L175 Difference]: Start difference. First operand has 160 places, 87 transitions, 633 flow. Second operand 12 states and 132 transitions. [2024-06-27 20:01:13,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 102 transitions, 863 flow [2024-06-27 20:01:13,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 102 transitions, 821 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 20:01:13,161 INFO L231 Difference]: Finished difference. Result has 156 places, 82 transitions, 579 flow [2024-06-27 20:01:13,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=579, PETRI_PLACES=156, PETRI_TRANSITIONS=82} [2024-06-27 20:01:13,163 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 127 predicate places. [2024-06-27 20:01:13,163 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 82 transitions, 579 flow [2024-06-27 20:01:13,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:13,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:13,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:13,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 20:01:13,163 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:13,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:13,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1477142753, now seen corresponding path program 1 times [2024-06-27 20:01:13,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:13,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974699229] [2024-06-27 20:01:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:13,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:14,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:14,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:14,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974699229] [2024-06-27 20:01:14,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974699229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:14,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:14,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:14,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424347426] [2024-06-27 20:01:14,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:14,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:14,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:14,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:14,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:14,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:14,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 82 transitions, 579 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:14,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:14,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:14,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:14,809 INFO L124 PetriNetUnfolderBase]: 225/503 cut-off events. [2024-06-27 20:01:14,809 INFO L125 PetriNetUnfolderBase]: For 26271/26271 co-relation queries the response was YES. [2024-06-27 20:01:14,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2582 conditions, 503 events. 225/503 cut-off events. For 26271/26271 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2441 event pairs, 72 based on Foata normal form. 6/509 useless extension candidates. Maximal degree in co-relation 2520. Up to 409 conditions per place. [2024-06-27 20:01:14,811 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 72 selfloop transitions, 11 changer transitions 15/101 dead transitions. [2024-06-27 20:01:14,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 101 transitions, 827 flow [2024-06-27 20:01:14,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:01:14,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:01:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 20:01:14,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:01:14,812 INFO L175 Difference]: Start difference. First operand has 156 places, 82 transitions, 579 flow. Second operand 12 states and 135 transitions. [2024-06-27 20:01:14,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 101 transitions, 827 flow [2024-06-27 20:01:14,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 101 transitions, 784 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:01:14,848 INFO L231 Difference]: Finished difference. Result has 150 places, 77 transitions, 522 flow [2024-06-27 20:01:14,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=522, PETRI_PLACES=150, PETRI_TRANSITIONS=77} [2024-06-27 20:01:14,849 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 121 predicate places. [2024-06-27 20:01:14,849 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 77 transitions, 522 flow [2024-06-27 20:01:14,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:14,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:14,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:14,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 20:01:14,850 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:14,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:14,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1104443225, now seen corresponding path program 2 times [2024-06-27 20:01:14,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:14,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151813724] [2024-06-27 20:01:14,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:14,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:16,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:16,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151813724] [2024-06-27 20:01:16,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151813724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:16,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:16,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:16,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948252730] [2024-06-27 20:01:16,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:16,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:16,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:16,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:16,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:16,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:16,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 77 transitions, 522 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:16,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:16,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:16,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:16,353 INFO L124 PetriNetUnfolderBase]: 213/479 cut-off events. [2024-06-27 20:01:16,354 INFO L125 PetriNetUnfolderBase]: For 23783/23783 co-relation queries the response was YES. [2024-06-27 20:01:16,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 479 events. 213/479 cut-off events. For 23783/23783 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2287 event pairs, 66 based on Foata normal form. 6/485 useless extension candidates. Maximal degree in co-relation 2335. Up to 371 conditions per place. [2024-06-27 20:01:16,356 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 65 selfloop transitions, 9 changer transitions 21/98 dead transitions. [2024-06-27 20:01:16,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 98 transitions, 766 flow [2024-06-27 20:01:16,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:01:16,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:01:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 20:01:16,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:01:16,356 INFO L175 Difference]: Start difference. First operand has 150 places, 77 transitions, 522 flow. Second operand 12 states and 135 transitions. [2024-06-27 20:01:16,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 98 transitions, 766 flow [2024-06-27 20:01:16,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 98 transitions, 730 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-27 20:01:16,387 INFO L231 Difference]: Finished difference. Result has 142 places, 71 transitions, 478 flow [2024-06-27 20:01:16,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=478, PETRI_PLACES=142, PETRI_TRANSITIONS=71} [2024-06-27 20:01:16,387 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 113 predicate places. [2024-06-27 20:01:16,387 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 71 transitions, 478 flow [2024-06-27 20:01:16,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:16,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:16,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:16,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 20:01:16,387 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:16,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:16,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1145339453, now seen corresponding path program 3 times [2024-06-27 20:01:16,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:16,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081184149] [2024-06-27 20:01:16,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:16,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:18,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:18,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081184149] [2024-06-27 20:01:18,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081184149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:18,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:18,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:18,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057949928] [2024-06-27 20:01:18,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:18,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:18,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:18,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:18,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:18,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:18,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 71 transitions, 478 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:18,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:18,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:18,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:18,531 INFO L124 PetriNetUnfolderBase]: 191/433 cut-off events. [2024-06-27 20:01:18,531 INFO L125 PetriNetUnfolderBase]: For 23769/23769 co-relation queries the response was YES. [2024-06-27 20:01:18,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 433 events. 191/433 cut-off events. For 23769/23769 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2015 event pairs, 62 based on Foata normal form. 6/439 useless extension candidates. Maximal degree in co-relation 2187. Up to 337 conditions per place. [2024-06-27 20:01:18,533 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 63 selfloop transitions, 13 changer transitions 10/89 dead transitions. [2024-06-27 20:01:18,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 89 transitions, 696 flow [2024-06-27 20:01:18,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:01:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:01:18,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 20:01:18,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37222222222222223 [2024-06-27 20:01:18,534 INFO L175 Difference]: Start difference. First operand has 142 places, 71 transitions, 478 flow. Second operand 12 states and 134 transitions. [2024-06-27 20:01:18,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 89 transitions, 696 flow [2024-06-27 20:01:18,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 89 transitions, 668 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 20:01:18,559 INFO L231 Difference]: Finished difference. Result has 133 places, 67 transitions, 445 flow [2024-06-27 20:01:18,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=445, PETRI_PLACES=133, PETRI_TRANSITIONS=67} [2024-06-27 20:01:18,559 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 104 predicate places. [2024-06-27 20:01:18,560 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 67 transitions, 445 flow [2024-06-27 20:01:18,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:18,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:18,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:18,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 20:01:18,560 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:18,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:18,560 INFO L85 PathProgramCache]: Analyzing trace with hash 2010317195, now seen corresponding path program 4 times [2024-06-27 20:01:18,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:18,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016860185] [2024-06-27 20:01:18,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:18,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:19,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:19,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016860185] [2024-06-27 20:01:19,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016860185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:19,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:19,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:19,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999441098] [2024-06-27 20:01:19,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:19,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:19,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:19,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:19,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:20,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:20,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 67 transitions, 445 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:20,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:20,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:20,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:20,347 INFO L124 PetriNetUnfolderBase]: 165/377 cut-off events. [2024-06-27 20:01:20,347 INFO L125 PetriNetUnfolderBase]: For 15421/15421 co-relation queries the response was YES. [2024-06-27 20:01:20,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 377 events. 165/377 cut-off events. For 15421/15421 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1679 event pairs, 51 based on Foata normal form. 6/383 useless extension candidates. Maximal degree in co-relation 1726. Up to 295 conditions per place. [2024-06-27 20:01:20,349 INFO L140 encePairwiseOnDemand]: 19/30 looper letters, 53 selfloop transitions, 6 changer transitions 21/83 dead transitions. [2024-06-27 20:01:20,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 83 transitions, 645 flow [2024-06-27 20:01:20,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:01:20,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:01:20,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 20:01:20,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35833333333333334 [2024-06-27 20:01:20,350 INFO L175 Difference]: Start difference. First operand has 133 places, 67 transitions, 445 flow. Second operand 12 states and 129 transitions. [2024-06-27 20:01:20,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 83 transitions, 645 flow [2024-06-27 20:01:20,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 83 transitions, 603 flow, removed 4 selfloop flow, removed 14 redundant places. [2024-06-27 20:01:20,367 INFO L231 Difference]: Finished difference. Result has 128 places, 59 transitions, 352 flow [2024-06-27 20:01:20,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=352, PETRI_PLACES=128, PETRI_TRANSITIONS=59} [2024-06-27 20:01:20,368 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2024-06-27 20:01:20,368 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 59 transitions, 352 flow [2024-06-27 20:01:20,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:20,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:20,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:20,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 20:01:20,368 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:20,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:20,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1152876391, now seen corresponding path program 5 times [2024-06-27 20:01:20,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:20,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202545374] [2024-06-27 20:01:20,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:20,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:20,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:21,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:21,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:21,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202545374] [2024-06-27 20:01:21,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202545374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:21,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:21,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:21,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481550720] [2024-06-27 20:01:21,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:21,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:21,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:21,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:21,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:21,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:21,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 59 transitions, 352 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:21,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:21,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:21,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:21,957 INFO L124 PetriNetUnfolderBase]: 154/346 cut-off events. [2024-06-27 20:01:21,958 INFO L125 PetriNetUnfolderBase]: For 15281/15281 co-relation queries the response was YES. [2024-06-27 20:01:21,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1626 conditions, 346 events. 154/346 cut-off events. For 15281/15281 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1488 event pairs, 51 based on Foata normal form. 6/352 useless extension candidates. Maximal degree in co-relation 1576. Up to 276 conditions per place. [2024-06-27 20:01:21,959 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 50 selfloop transitions, 10 changer transitions 10/73 dead transitions. [2024-06-27 20:01:21,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 73 transitions, 528 flow [2024-06-27 20:01:21,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:21,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 20:01:21,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 20:01:21,960 INFO L175 Difference]: Start difference. First operand has 128 places, 59 transitions, 352 flow. Second operand 11 states and 120 transitions. [2024-06-27 20:01:21,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 73 transitions, 528 flow [2024-06-27 20:01:21,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 73 transitions, 484 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-27 20:01:21,977 INFO L231 Difference]: Finished difference. Result has 111 places, 56 transitions, 317 flow [2024-06-27 20:01:21,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=317, PETRI_PLACES=111, PETRI_TRANSITIONS=56} [2024-06-27 20:01:21,977 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 82 predicate places. [2024-06-27 20:01:21,977 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 56 transitions, 317 flow [2024-06-27 20:01:21,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:21,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:21,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:21,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 20:01:21,978 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:21,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:21,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1158382921, now seen corresponding path program 6 times [2024-06-27 20:01:21,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:21,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637341963] [2024-06-27 20:01:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:21,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:23,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:23,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637341963] [2024-06-27 20:01:23,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637341963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:23,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:23,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:23,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913746846] [2024-06-27 20:01:23,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:23,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:23,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:23,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:23,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:23,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:23,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 56 transitions, 317 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:23,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:23,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:23,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:23,331 INFO L124 PetriNetUnfolderBase]: 147/333 cut-off events. [2024-06-27 20:01:23,331 INFO L125 PetriNetUnfolderBase]: For 15229/15229 co-relation queries the response was YES. [2024-06-27 20:01:23,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1557 conditions, 333 events. 147/333 cut-off events. For 15229/15229 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1416 event pairs, 49 based on Foata normal form. 6/339 useless extension candidates. Maximal degree in co-relation 1514. Up to 258 conditions per place. [2024-06-27 20:01:23,333 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 47 selfloop transitions, 8 changer transitions 13/71 dead transitions. [2024-06-27 20:01:23,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 71 transitions, 491 flow [2024-06-27 20:01:23,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:23,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 20:01:23,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 20:01:23,333 INFO L175 Difference]: Start difference. First operand has 111 places, 56 transitions, 317 flow. Second operand 11 states and 120 transitions. [2024-06-27 20:01:23,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 71 transitions, 491 flow [2024-06-27 20:01:23,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 71 transitions, 465 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:01:23,349 INFO L231 Difference]: Finished difference. Result has 107 places, 52 transitions, 292 flow [2024-06-27 20:01:23,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=292, PETRI_PLACES=107, PETRI_TRANSITIONS=52} [2024-06-27 20:01:23,350 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-06-27 20:01:23,350 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 52 transitions, 292 flow [2024-06-27 20:01:23,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:23,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:23,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:23,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 20:01:23,350 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:23,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:23,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1288030519, now seen corresponding path program 7 times [2024-06-27 20:01:23,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:23,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138337860] [2024-06-27 20:01:23,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:23,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:24,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:24,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138337860] [2024-06-27 20:01:24,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138337860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:24,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:24,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:24,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250823173] [2024-06-27 20:01:24,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:24,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:24,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:24,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:24,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:24,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:24,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 52 transitions, 292 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:24,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:24,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:24,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:24,691 INFO L124 PetriNetUnfolderBase]: 136/312 cut-off events. [2024-06-27 20:01:24,691 INFO L125 PetriNetUnfolderBase]: For 13567/13567 co-relation queries the response was YES. [2024-06-27 20:01:24,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 312 events. 136/312 cut-off events. For 13567/13567 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1292 event pairs, 45 based on Foata normal form. 6/318 useless extension candidates. Maximal degree in co-relation 1418. Up to 232 conditions per place. [2024-06-27 20:01:24,693 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 41 selfloop transitions, 5 changer transitions 19/68 dead transitions. [2024-06-27 20:01:24,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 68 transitions, 462 flow [2024-06-27 20:01:24,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 20:01:24,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 20:01:24,694 INFO L175 Difference]: Start difference. First operand has 107 places, 52 transitions, 292 flow. Second operand 11 states and 120 transitions. [2024-06-27 20:01:24,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 68 transitions, 462 flow [2024-06-27 20:01:24,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 68 transitions, 438 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 20:01:24,706 INFO L231 Difference]: Finished difference. Result has 101 places, 46 transitions, 255 flow [2024-06-27 20:01:24,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=255, PETRI_PLACES=101, PETRI_TRANSITIONS=46} [2024-06-27 20:01:24,707 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 72 predicate places. [2024-06-27 20:01:24,707 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 46 transitions, 255 flow [2024-06-27 20:01:24,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:24,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:24,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:24,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 20:01:24,707 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:24,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:24,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1634694367, now seen corresponding path program 8 times [2024-06-27 20:01:24,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:24,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906737745] [2024-06-27 20:01:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:24,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:25,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:25,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906737745] [2024-06-27 20:01:25,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906737745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:25,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:25,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:25,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333631405] [2024-06-27 20:01:25,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:25,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:25,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:25,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:25,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:26,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:26,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 46 transitions, 255 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:26,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:26,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:26,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:26,256 INFO L124 PetriNetUnfolderBase]: 119/275 cut-off events. [2024-06-27 20:01:26,257 INFO L125 PetriNetUnfolderBase]: For 11257/11257 co-relation queries the response was YES. [2024-06-27 20:01:26,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301 conditions, 275 events. 119/275 cut-off events. For 11257/11257 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1088 event pairs, 34 based on Foata normal form. 6/281 useless extension candidates. Maximal degree in co-relation 1263. Up to 193 conditions per place. [2024-06-27 20:01:26,258 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 38 selfloop transitions, 9 changer transitions 10/60 dead transitions. [2024-06-27 20:01:26,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 60 transitions, 403 flow [2024-06-27 20:01:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:26,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 20:01:26,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3606060606060606 [2024-06-27 20:01:26,259 INFO L175 Difference]: Start difference. First operand has 101 places, 46 transitions, 255 flow. Second operand 11 states and 119 transitions. [2024-06-27 20:01:26,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 60 transitions, 403 flow [2024-06-27 20:01:26,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 60 transitions, 383 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 20:01:26,268 INFO L231 Difference]: Finished difference. Result has 92 places, 42 transitions, 237 flow [2024-06-27 20:01:26,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=237, PETRI_PLACES=92, PETRI_TRANSITIONS=42} [2024-06-27 20:01:26,268 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 63 predicate places. [2024-06-27 20:01:26,269 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 42 transitions, 237 flow [2024-06-27 20:01:26,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:26,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:26,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:26,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 20:01:26,269 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:26,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:26,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1214337115, now seen corresponding path program 9 times [2024-06-27 20:01:26,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:26,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920703547] [2024-06-27 20:01:26,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:26,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:28,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:28,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920703547] [2024-06-27 20:01:28,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920703547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:28,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:28,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:28,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416169261] [2024-06-27 20:01:28,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:28,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:28,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:28,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:28,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:28,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:28,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 42 transitions, 237 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:28,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:28,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:28,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:28,808 INFO L124 PetriNetUnfolderBase]: 93/219 cut-off events. [2024-06-27 20:01:28,808 INFO L125 PetriNetUnfolderBase]: For 6411/6411 co-relation queries the response was YES. [2024-06-27 20:01:28,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 219 events. 93/219 cut-off events. For 6411/6411 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 781 event pairs, 30 based on Foata normal form. 6/225 useless extension candidates. Maximal degree in co-relation 901. Up to 156 conditions per place. [2024-06-27 20:01:28,809 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 30 selfloop transitions, 3 changer transitions 19/55 dead transitions. [2024-06-27 20:01:28,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 55 transitions, 373 flow [2024-06-27 20:01:28,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:28,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 20:01:28,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515151515151515 [2024-06-27 20:01:28,810 INFO L175 Difference]: Start difference. First operand has 92 places, 42 transitions, 237 flow. Second operand 11 states and 116 transitions. [2024-06-27 20:01:28,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 55 transitions, 373 flow [2024-06-27 20:01:28,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 55 transitions, 347 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 20:01:28,816 INFO L231 Difference]: Finished difference. Result has 86 places, 35 transitions, 186 flow [2024-06-27 20:01:28,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=186, PETRI_PLACES=86, PETRI_TRANSITIONS=35} [2024-06-27 20:01:28,816 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-06-27 20:01:28,816 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 35 transitions, 186 flow [2024-06-27 20:01:28,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:28,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:28,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:28,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 20:01:28,816 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:28,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:28,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1839775465, now seen corresponding path program 10 times [2024-06-27 20:01:28,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:28,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60930297] [2024-06-27 20:01:28,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:28,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:29,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:29,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:29,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60930297] [2024-06-27 20:01:29,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60930297] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:29,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:29,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:01:29,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450467019] [2024-06-27 20:01:29,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:29,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:01:29,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:01:29,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:01:29,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:29,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 35 transitions, 186 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:29,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:29,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:29,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:30,050 INFO L124 PetriNetUnfolderBase]: 81/190 cut-off events. [2024-06-27 20:01:30,050 INFO L125 PetriNetUnfolderBase]: For 5028/5028 co-relation queries the response was YES. [2024-06-27 20:01:30,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 190 events. 81/190 cut-off events. For 5028/5028 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 644 event pairs, 28 based on Foata normal form. 6/196 useless extension candidates. Maximal degree in co-relation 769. Up to 62 conditions per place. [2024-06-27 20:01:30,050 INFO L140 encePairwiseOnDemand]: 21/30 looper letters, 27 selfloop transitions, 10 changer transitions 9/49 dead transitions. [2024-06-27 20:01:30,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 49 transitions, 362 flow [2024-06-27 20:01:30,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:01:30,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:01:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 20:01:30,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36666666666666664 [2024-06-27 20:01:30,051 INFO L175 Difference]: Start difference. First operand has 86 places, 35 transitions, 186 flow. Second operand 10 states and 110 transitions. [2024-06-27 20:01:30,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 49 transitions, 362 flow [2024-06-27 20:01:30,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 49 transitions, 320 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-27 20:01:30,055 INFO L231 Difference]: Finished difference. Result has 71 places, 30 transitions, 161 flow [2024-06-27 20:01:30,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=161, PETRI_PLACES=71, PETRI_TRANSITIONS=30} [2024-06-27 20:01:30,056 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-27 20:01:30,056 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 30 transitions, 161 flow [2024-06-27 20:01:30,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:30,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:30,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:30,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 20:01:30,056 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:30,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:30,056 INFO L85 PathProgramCache]: Analyzing trace with hash -24298485, now seen corresponding path program 11 times [2024-06-27 20:01:30,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:30,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882422779] [2024-06-27 20:01:30,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:30,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:32,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:32,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882422779] [2024-06-27 20:01:32,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882422779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:32,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:32,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:32,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081680113] [2024-06-27 20:01:32,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:32,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:32,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:32,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:32,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:32,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:32,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 30 transitions, 161 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:32,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:32,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:32,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:32,711 INFO L124 PetriNetUnfolderBase]: 54/131 cut-off events. [2024-06-27 20:01:32,711 INFO L125 PetriNetUnfolderBase]: For 1956/1956 co-relation queries the response was YES. [2024-06-27 20:01:32,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 131 events. 54/131 cut-off events. For 1956/1956 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 363 event pairs, 15 based on Foata normal form. 6/137 useless extension candidates. Maximal degree in co-relation 446. Up to 74 conditions per place. [2024-06-27 20:01:32,711 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 19 selfloop transitions, 4 changer transitions 16/42 dead transitions. [2024-06-27 20:01:32,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 42 transitions, 265 flow [2024-06-27 20:01:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:32,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 20:01:32,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34545454545454546 [2024-06-27 20:01:32,712 INFO L175 Difference]: Start difference. First operand has 71 places, 30 transitions, 161 flow. Second operand 11 states and 114 transitions. [2024-06-27 20:01:32,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 42 transitions, 265 flow [2024-06-27 20:01:32,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 42 transitions, 236 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 20:01:32,713 INFO L231 Difference]: Finished difference. Result has 65 places, 24 transitions, 115 flow [2024-06-27 20:01:32,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=115, PETRI_PLACES=65, PETRI_TRANSITIONS=24} [2024-06-27 20:01:32,714 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 36 predicate places. [2024-06-27 20:01:32,714 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 24 transitions, 115 flow [2024-06-27 20:01:32,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:32,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:32,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:32,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 20:01:32,714 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:32,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:32,714 INFO L85 PathProgramCache]: Analyzing trace with hash -191478825, now seen corresponding path program 12 times [2024-06-27 20:01:32,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:32,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248544340] [2024-06-27 20:01:32,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:32,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:32,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:33,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:33,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:33,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248544340] [2024-06-27 20:01:33,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248544340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:33,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:33,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:33,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783194030] [2024-06-27 20:01:33,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:33,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:33,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:33,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:33,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:34,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:34,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 24 transitions, 115 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:34,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:34,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:34,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:34,267 INFO L124 PetriNetUnfolderBase]: 44/107 cut-off events. [2024-06-27 20:01:34,268 INFO L125 PetriNetUnfolderBase]: For 1166/1166 co-relation queries the response was YES. [2024-06-27 20:01:34,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 107 events. 44/107 cut-off events. For 1166/1166 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 262 event pairs, 15 based on Foata normal form. 6/113 useless extension candidates. Maximal degree in co-relation 346. Up to 52 conditions per place. [2024-06-27 20:01:34,268 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 16 selfloop transitions, 7 changer transitions 10/36 dead transitions. [2024-06-27 20:01:34,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 36 transitions, 207 flow [2024-06-27 20:01:34,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:34,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:34,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 20:01:34,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33636363636363636 [2024-06-27 20:01:34,269 INFO L175 Difference]: Start difference. First operand has 65 places, 24 transitions, 115 flow. Second operand 11 states and 111 transitions. [2024-06-27 20:01:34,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 36 transitions, 207 flow [2024-06-27 20:01:34,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 36 transitions, 191 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:01:34,270 INFO L231 Difference]: Finished difference. Result has 55 places, 21 transitions, 102 flow [2024-06-27 20:01:34,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=102, PETRI_PLACES=55, PETRI_TRANSITIONS=21} [2024-06-27 20:01:34,270 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2024-06-27 20:01:34,270 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 21 transitions, 102 flow [2024-06-27 20:01:34,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:34,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:01:34,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:34,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 20:01:34,270 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:01:34,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:01:34,271 INFO L85 PathProgramCache]: Analyzing trace with hash -899640139, now seen corresponding path program 13 times [2024-06-27 20:01:34,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:01:34,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259223531] [2024-06-27 20:01:34,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:01:34,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:01:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:01:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:01:35,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:01:35,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259223531] [2024-06-27 20:01:35,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259223531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:01:35,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:01:35,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:01:35,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434692697] [2024-06-27 20:01:35,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:01:35,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:01:35,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:01:35,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:01:35,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:01:35,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-27 20:01:35,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 21 transitions, 102 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:35,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:01:35,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-27 20:01:35,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:01:35,990 INFO L124 PetriNetUnfolderBase]: 22/61 cut-off events. [2024-06-27 20:01:35,990 INFO L125 PetriNetUnfolderBase]: For 374/374 co-relation queries the response was YES. [2024-06-27 20:01:35,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 61 events. 22/61 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 90 event pairs, 0 based on Foata normal form. 6/67 useless extension candidates. Maximal degree in co-relation 160. Up to 24 conditions per place. [2024-06-27 20:01:35,990 INFO L140 encePairwiseOnDemand]: 20/30 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-06-27 20:01:35,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 29 transitions, 148 flow [2024-06-27 20:01:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:01:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:01:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-27 20:01:35,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151515151515151 [2024-06-27 20:01:35,991 INFO L175 Difference]: Start difference. First operand has 55 places, 21 transitions, 102 flow. Second operand 11 states and 104 transitions. [2024-06-27 20:01:35,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 29 transitions, 148 flow [2024-06-27 20:01:35,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 29 transitions, 116 flow, removed 1 selfloop flow, removed 16 redundant places. [2024-06-27 20:01:35,991 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2024-06-27 20:01:35,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2024-06-27 20:01:35,991 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-06-27 20:01:35,992 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2024-06-27 20:01:35,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:01:35,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 20:01:35,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 20:01:35,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 20:01:35,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 20:01:35,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 20:01:35,995 INFO L445 BasicCegarLoop]: Path program histogram: [32, 20, 13, 10, 8, 8, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-06-27 20:01:35,997 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 20:01:35,997 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 20:01:35,999 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 20:01:36,000 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 20:01:36,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 08:01:36 BasicIcfg [2024-06-27 20:01:36,000 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 20:01:36,001 INFO L158 Benchmark]: Toolchain (without parser) took 166976.81ms. Allocated memory was 142.6MB in the beginning and 975.2MB in the end (delta: 832.6MB). Free memory was 65.1MB in the beginning and 502.3MB in the end (delta: -437.2MB). Peak memory consumption was 396.9MB. Max. memory is 16.1GB. [2024-06-27 20:01:36,001 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 142.6MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:01:36,001 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 142.6MB. Free memory is still 111.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:01:36,001 INFO L158 Benchmark]: CACSL2BoogieTranslator took 576.16ms. Allocated memory was 142.6MB in the beginning and 220.2MB in the end (delta: 77.6MB). Free memory was 64.8MB in the beginning and 161.8MB in the end (delta: -96.9MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2024-06-27 20:01:36,001 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.29ms. Allocated memory is still 220.2MB. Free memory was 160.7MB in the beginning and 158.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 20:01:36,001 INFO L158 Benchmark]: Boogie Preprocessor took 45.17ms. Allocated memory is still 220.2MB. Free memory was 158.6MB in the beginning and 154.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 20:01:36,002 INFO L158 Benchmark]: RCFGBuilder took 569.42ms. Allocated memory is still 220.2MB. Free memory was 154.4MB in the beginning and 99.9MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2024-06-27 20:01:36,002 INFO L158 Benchmark]: TraceAbstraction took 165737.84ms. Allocated memory was 220.2MB in the beginning and 975.2MB in the end (delta: 755.0MB). Free memory was 99.9MB in the beginning and 502.3MB in the end (delta: -402.4MB). Peak memory consumption was 351.5MB. Max. memory is 16.1GB. [2024-06-27 20:01:36,003 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 142.6MB. Free memory is still 96.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 142.6MB. Free memory is still 111.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 576.16ms. Allocated memory was 142.6MB in the beginning and 220.2MB in the end (delta: 77.6MB). Free memory was 64.8MB in the beginning and 161.8MB in the end (delta: -96.9MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.29ms. Allocated memory is still 220.2MB. Free memory was 160.7MB in the beginning and 158.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.17ms. Allocated memory is still 220.2MB. Free memory was 158.6MB in the beginning and 154.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 569.42ms. Allocated memory is still 220.2MB. Free memory was 154.4MB in the beginning and 99.9MB in the end (delta: 54.5MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * TraceAbstraction took 165737.84ms. Allocated memory was 220.2MB in the beginning and 975.2MB in the end (delta: 755.0MB). Free memory was 99.9MB in the beginning and 502.3MB in the end (delta: -402.4MB). Peak memory consumption was 351.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 824]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 825]: 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, 48 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: 165.6s, OverallIterations: 121, TraceHistogramMax: 1, PathProgramHistogramMax: 32, EmptinessCheckTime: 0.0s, AutomataDifference: 48.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7195 SdHoareTripleChecker+Valid, 27.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5996 mSDsluCounter, 4130 SdHoareTripleChecker+Invalid, 23.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3666 mSDsCounter, 1150 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46604 IncrementalHoareTripleChecker+Invalid, 47754 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1150 mSolverCounterUnsat, 464 mSDtfsCounter, 46604 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1308 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2345 ImplicationChecksByTransitivity, 37.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1442occurred in iteration=73, InterpolantAutomatonStates: 1169, 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, 0.9s SatisfiabilityAnalysisTime, 114.9s InterpolantComputationTime, 1924 NumberOfCodeBlocks, 1924 NumberOfCodeBlocksAsserted, 121 NumberOfCheckSat, 1803 ConstructedInterpolants, 0 QuantifiedInterpolants, 90831 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 121 InterpolantComputations, 121 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 20:01:36,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE