./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/fib_unsafe-7.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/fib_unsafe-7.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread/fib_unsafe-7.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/fib_unsafe-7.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 14:21:37,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 14:21:37,525 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 14:21:37,529 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 14:21:37,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 14:21:37,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 14:21:37,555 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 14:21:37,555 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 14:21:37,555 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 14:21:37,558 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 14:21:37,559 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 14:21:37,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 14:21:37,560 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 14:21:37,561 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 14:21:37,561 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 14:21:37,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 14:21:37,562 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 14:21:37,562 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 14:21:37,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 14:21:37,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 14:21:37,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 14:21:37,564 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 14:21:37,564 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 14:21:37,564 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 14:21:37,565 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 14:21:37,565 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 14:21:37,565 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 14:21:37,565 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 14:21:37,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 14:21:37,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 14:21:37,567 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 14:21:37,567 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 14:21:37,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:21:37,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 14:21:37,568 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 14:21:37,568 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 14:21:37,568 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 14:21:37,568 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 14:21:37,568 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 14:21:37,569 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 14:21:37,569 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 14:21:37,569 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 14:21:37,569 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 14:21:37,570 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 14:21:37,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 14:21:37,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 14:21:37,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 14:21:37,807 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 14:21:37,807 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 14:21:37,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/fib_unsafe-7.yml/witness.yml [2024-06-14 14:21:37,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 14:21:37,947 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 14:21:37,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-7.i [2024-06-14 14:21:38,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 14:21:39,247 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 14:21:39,248 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-7.i [2024-06-14 14:21:39,260 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57767044d/78dea397cb3a47049b41c29624efde83/FLAGee63eb891 [2024-06-14 14:21:39,271 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57767044d/78dea397cb3a47049b41c29624efde83 [2024-06-14 14:21:39,271 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 14:21:39,272 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 14:21:39,277 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 14:21:39,277 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 14:21:39,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 14:21:39,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:21:37" (1/2) ... [2024-06-14 14:21:39,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7726f4da and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:39, skipping insertion in model container [2024-06-14 14:21:39,282 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:21:37" (1/2) ... [2024-06-14 14:21:39,283 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@19695594 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:21:39, skipping insertion in model container [2024-06-14 14:21:39,284 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:21:39" (2/2) ... [2024-06-14 14:21:39,284 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7726f4da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39, skipping insertion in model container [2024-06-14 14:21:39,284 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:21:39" (2/2) ... [2024-06-14 14:21:39,285 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 14:21:39,321 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 14:21:39,322 INFO L97 edCorrectnessWitness]: Location invariant before [L721-L721] ((((((((! multithreaded || 0 <= cur) && (! multithreaded || 0 <= next)) && (! multithreaded || ((0 <= i && 1 <= i) && i != 0))) && (! multithreaded || 0 <= p)) && (! multithreaded || 0 <= q)) && (! multithreaded || ((((0 <= i && 0 <= j) && 1 <= j) && i != 0) && j != 0))) && (! multithreaded || 0 <= x)) && (! multithreaded || 0 <= prev)) && (! multithreaded || ((0 <= j && 1 <= j) && j != 0)) [2024-06-14 14:21:39,322 INFO L97 edCorrectnessWitness]: Location invariant before [L722-L722] ((((((((! multithreaded || 0 <= cur) && (! multithreaded || 0 <= next)) && (! multithreaded || ((0 <= i && 1 <= i) && i != 0))) && (! multithreaded || 0 <= p)) && (! multithreaded || 0 <= q)) && (! multithreaded || ((((0 <= i && 0 <= j) && 1 <= j) && i != 0) && j != 0))) && (! multithreaded || 0 <= x)) && (! multithreaded || 0 <= prev)) && (! multithreaded || ((0 <= j && 1 <= j) && j != 0)) [2024-06-14 14:21:39,322 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 14:21:39,323 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] multithreaded = 1; [2024-06-14 14:21:39,356 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 14:21:39,597 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:21:39,609 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 14:21:39,682 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:21:39,714 INFO L206 MainTranslator]: Completed translation [2024-06-14 14:21:39,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39 WrapperNode [2024-06-14 14:21:39,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 14:21:39,716 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 14:21:39,716 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 14:21:39,716 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 14:21:39,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39" (1/1) ... [2024-06-14 14:21:39,747 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39" (1/1) ... [2024-06-14 14:21:39,773 INFO L138 Inliner]: procedures = 164, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-06-14 14:21:39,773 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 14:21:39,774 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 14:21:39,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 14:21:39,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 14:21:39,782 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39" (1/1) ... [2024-06-14 14:21:39,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39" (1/1) ... [2024-06-14 14:21:39,789 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39" (1/1) ... [2024-06-14 14:21:39,809 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 14:21:39,810 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39" (1/1) ... [2024-06-14 14:21:39,810 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39" (1/1) ... [2024-06-14 14:21:39,821 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39" (1/1) ... [2024-06-14 14:21:39,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39" (1/1) ... [2024-06-14 14:21:39,828 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39" (1/1) ... [2024-06-14 14:21:39,829 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39" (1/1) ... [2024-06-14 14:21:39,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 14:21:39,836 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 14:21:39,836 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 14:21:39,836 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 14:21:39,837 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39" (1/1) ... [2024-06-14 14:21:39,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:21:39,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:21:39,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 14:21:39,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 14:21:39,959 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-14 14:21:39,959 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-14 14:21:39,959 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-14 14:21:39,960 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-14 14:21:39,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 14:21:39,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 14:21:39,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 14:21:39,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 14:21:39,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 14:21:39,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 14:21:39,962 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 14:21:40,083 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 14:21:40,084 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 14:21:40,248 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 14:21:40,248 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 14:21:40,333 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 14:21:40,334 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-06-14 14:21:40,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:21:40 BoogieIcfgContainer [2024-06-14 14:21:40,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 14:21:40,336 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 14:21:40,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 14:21:40,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 14:21:40,338 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:21:37" (1/4) ... [2024-06-14 14:21:40,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ad547c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:21:40, skipping insertion in model container [2024-06-14 14:21:40,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 02:21:39" (2/4) ... [2024-06-14 14:21:40,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ad547c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:21:40, skipping insertion in model container [2024-06-14 14:21:40,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:21:39" (3/4) ... [2024-06-14 14:21:40,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8ad547c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:21:40, skipping insertion in model container [2024-06-14 14:21:40,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:21:40" (4/4) ... [2024-06-14 14:21:40,341 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-7.i [2024-06-14 14:21:40,354 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 14:21:40,354 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 14:21:40,355 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 14:21:40,396 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 14:21:40,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 29 transitions, 66 flow [2024-06-14 14:21:40,452 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2024-06-14 14:21:40,455 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:21:40,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 3/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 29 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-06-14 14:21:40,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 29 transitions, 66 flow [2024-06-14 14:21:40,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 27 transitions, 60 flow [2024-06-14 14:21:40,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 14:21:40,483 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;@3adbaea9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 14:21:40,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 14:21:40,488 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 14:21:40,488 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-06-14 14:21:40,488 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:21:40,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:40,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:40,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:40,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:40,500 INFO L85 PathProgramCache]: Analyzing trace with hash 259354094, now seen corresponding path program 1 times [2024-06-14 14:21:40,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:40,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562092689] [2024-06-14 14:21:40,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:40,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:41,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:41,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562092689] [2024-06-14 14:21:41,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562092689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:41,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:41,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:21:41,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013973701] [2024-06-14 14:21:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:41,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:21:41,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:41,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:21:41,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:21:41,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:41,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:41,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:41,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:41,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:41,348 INFO L124 PetriNetUnfolderBase]: 322/536 cut-off events. [2024-06-14 14:21:41,349 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 14:21:41,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 536 events. 322/536 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2114 event pairs, 53 based on Foata normal form. 21/506 useless extension candidates. Maximal degree in co-relation 1034. Up to 295 conditions per place. [2024-06-14 14:21:41,352 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 34 selfloop transitions, 8 changer transitions 12/56 dead transitions. [2024-06-14 14:21:41,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 56 transitions, 227 flow [2024-06-14 14:21:41,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:21:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:21:41,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-14 14:21:41,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5862068965517241 [2024-06-14 14:21:41,378 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 5 states and 85 transitions. [2024-06-14 14:21:41,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 56 transitions, 227 flow [2024-06-14 14:21:41,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 56 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 14:21:41,381 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 103 flow [2024-06-14 14:21:41,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, 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=103, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2024-06-14 14:21:41,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-06-14 14:21:41,387 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 103 flow [2024-06-14 14:21:41,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:41,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:41,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:41,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 14:21:41,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:41,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:41,388 INFO L85 PathProgramCache]: Analyzing trace with hash -227696702, now seen corresponding path program 1 times [2024-06-14 14:21:41,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:41,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68426740] [2024-06-14 14:21:41,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:41,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:41,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68426740] [2024-06-14 14:21:41,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68426740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:41,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:41,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:21:41,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102743653] [2024-06-14 14:21:41,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:41,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:21:41,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:41,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:21:41,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:21:41,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:41,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 103 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:41,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:41,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:41,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:41,870 INFO L124 PetriNetUnfolderBase]: 160/298 cut-off events. [2024-06-14 14:21:41,870 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-06-14 14:21:41,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 298 events. 160/298 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1094 event pairs, 13 based on Foata normal form. 10/308 useless extension candidates. Maximal degree in co-relation 762. Up to 115 conditions per place. [2024-06-14 14:21:41,876 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 42 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2024-06-14 14:21:41,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 56 transitions, 291 flow [2024-06-14 14:21:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:21:41,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:21:41,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-14 14:21:41,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45320197044334976 [2024-06-14 14:21:41,880 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 103 flow. Second operand 7 states and 92 transitions. [2024-06-14 14:21:41,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 56 transitions, 291 flow [2024-06-14 14:21:41,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 291 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-14 14:21:41,887 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 162 flow [2024-06-14 14:21:41,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=162, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-14 14:21:41,888 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-14 14:21:41,889 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 162 flow [2024-06-14 14:21:41,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:41,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:41,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:41,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 14:21:41,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:41,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:41,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1531337612, now seen corresponding path program 1 times [2024-06-14 14:21:41,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:41,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516859013] [2024-06-14 14:21:41,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:41,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:42,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:42,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:42,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516859013] [2024-06-14 14:21:42,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516859013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:42,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:42,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:21:42,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048874274] [2024-06-14 14:21:42,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:42,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:21:42,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:42,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:21:42,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:21:42,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:42,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 162 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:42,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:42,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:42,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:42,381 INFO L124 PetriNetUnfolderBase]: 145/273 cut-off events. [2024-06-14 14:21:42,381 INFO L125 PetriNetUnfolderBase]: For 304/308 co-relation queries the response was YES. [2024-06-14 14:21:42,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 273 events. 145/273 cut-off events. For 304/308 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 967 event pairs, 4 based on Foata normal form. 13/286 useless extension candidates. Maximal degree in co-relation 859. Up to 115 conditions per place. [2024-06-14 14:21:42,383 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 44 selfloop transitions, 13 changer transitions 0/59 dead transitions. [2024-06-14 14:21:42,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 366 flow [2024-06-14 14:21:42,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:21:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:21:42,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-14 14:21:42,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267241379310345 [2024-06-14 14:21:42,384 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 162 flow. Second operand 8 states and 99 transitions. [2024-06-14 14:21:42,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 366 flow [2024-06-14 14:21:42,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 59 transitions, 346 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-14 14:21:42,401 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 174 flow [2024-06-14 14:21:42,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=174, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2024-06-14 14:21:42,402 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-14 14:21:42,402 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 174 flow [2024-06-14 14:21:42,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:42,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:42,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:42,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 14:21:42,403 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)] === [2024-06-14 14:21:42,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash 58741636, now seen corresponding path program 1 times [2024-06-14 14:21:42,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:42,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107349316] [2024-06-14 14:21:42,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:42,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:42,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:42,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107349316] [2024-06-14 14:21:42,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107349316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:42,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:42,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:21:42,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356137957] [2024-06-14 14:21:42,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:42,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:21:42,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:21:42,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:21:42,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:42,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:42,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:42,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:42,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:42,762 INFO L124 PetriNetUnfolderBase]: 169/315 cut-off events. [2024-06-14 14:21:42,762 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-06-14 14:21:42,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 315 events. 169/315 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1131 event pairs, 37 based on Foata normal form. 3/317 useless extension candidates. Maximal degree in co-relation 1054. Up to 179 conditions per place. [2024-06-14 14:21:42,764 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 36 selfloop transitions, 11 changer transitions 0/49 dead transitions. [2024-06-14 14:21:42,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 348 flow [2024-06-14 14:21:42,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:21:42,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:21:42,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-14 14:21:42,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842364532019704 [2024-06-14 14:21:42,766 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 174 flow. Second operand 7 states and 78 transitions. [2024-06-14 14:21:42,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 348 flow [2024-06-14 14:21:42,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 320 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-14 14:21:42,768 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 205 flow [2024-06-14 14:21:42,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2024-06-14 14:21:42,769 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-06-14 14:21:42,769 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 205 flow [2024-06-14 14:21:42,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:42,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:42,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:42,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 14:21:42,770 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:42,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:42,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1820991533, now seen corresponding path program 1 times [2024-06-14 14:21:42,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:42,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385038105] [2024-06-14 14:21:42,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:42,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:43,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:43,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:43,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385038105] [2024-06-14 14:21:43,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385038105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:43,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:43,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:21:43,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714721544] [2024-06-14 14:21:43,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:43,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:21:43,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:43,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:21:43,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:21:43,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:43,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 205 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:43,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:43,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:43,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:43,161 INFO L124 PetriNetUnfolderBase]: 151/289 cut-off events. [2024-06-14 14:21:43,161 INFO L125 PetriNetUnfolderBase]: For 507/507 co-relation queries the response was YES. [2024-06-14 14:21:43,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 289 events. 151/289 cut-off events. For 507/507 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 996 event pairs, 31 based on Foata normal form. 9/297 useless extension candidates. Maximal degree in co-relation 991. Up to 176 conditions per place. [2024-06-14 14:21:43,163 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 33 selfloop transitions, 11 changer transitions 2/48 dead transitions. [2024-06-14 14:21:43,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 349 flow [2024-06-14 14:21:43,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 14:21:43,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 14:21:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-14 14:21:43,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35344827586206895 [2024-06-14 14:21:43,164 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 205 flow. Second operand 8 states and 82 transitions. [2024-06-14 14:21:43,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 349 flow [2024-06-14 14:21:43,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 336 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 14:21:43,167 INFO L231 Difference]: Finished difference. Result has 52 places, 34 transitions, 218 flow [2024-06-14 14:21:43,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=218, PETRI_PLACES=52, PETRI_TRANSITIONS=34} [2024-06-14 14:21:43,168 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 21 predicate places. [2024-06-14 14:21:43,168 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 34 transitions, 218 flow [2024-06-14 14:21:43,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:43,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:43,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:43,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 14:21:43,169 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:43,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:43,169 INFO L85 PathProgramCache]: Analyzing trace with hash -124043924, now seen corresponding path program 1 times [2024-06-14 14:21:43,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:43,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842262365] [2024-06-14 14:21:43,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:43,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:43,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:43,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:43,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842262365] [2024-06-14 14:21:43,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842262365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:43,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:43,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:21:43,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275530641] [2024-06-14 14:21:43,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:43,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:21:43,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:43,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:21:43,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:21:43,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:43,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 34 transitions, 218 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:43,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:43,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:43,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:43,571 INFO L124 PetriNetUnfolderBase]: 157/300 cut-off events. [2024-06-14 14:21:43,571 INFO L125 PetriNetUnfolderBase]: For 637/641 co-relation queries the response was YES. [2024-06-14 14:21:43,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 300 events. 157/300 cut-off events. For 637/641 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1062 event pairs, 31 based on Foata normal form. 5/305 useless extension candidates. Maximal degree in co-relation 1054. Up to 168 conditions per place. [2024-06-14 14:21:43,574 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 39 selfloop transitions, 17 changer transitions 1/59 dead transitions. [2024-06-14 14:21:43,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 421 flow [2024-06-14 14:21:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:21:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:21:43,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-14 14:21:43,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37547892720306514 [2024-06-14 14:21:43,575 INFO L175 Difference]: Start difference. First operand has 52 places, 34 transitions, 218 flow. Second operand 9 states and 98 transitions. [2024-06-14 14:21:43,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 421 flow [2024-06-14 14:21:43,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 393 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 14:21:43,579 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 266 flow [2024-06-14 14:21:43,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=266, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2024-06-14 14:21:43,582 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-14 14:21:43,582 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 266 flow [2024-06-14 14:21:43,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:43,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:43,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:43,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 14:21:43,583 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:43,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:43,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1747540272, now seen corresponding path program 2 times [2024-06-14 14:21:43,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:43,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420273582] [2024-06-14 14:21:43,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:43,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:43,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:43,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:43,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420273582] [2024-06-14 14:21:43,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420273582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:43,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:43,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:21:43,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910307503] [2024-06-14 14:21:43,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:43,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:21:43,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:43,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:21:43,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:21:43,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:43,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 266 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:43,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:43,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:43,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:43,945 INFO L124 PetriNetUnfolderBase]: 166/314 cut-off events. [2024-06-14 14:21:43,945 INFO L125 PetriNetUnfolderBase]: For 782/782 co-relation queries the response was YES. [2024-06-14 14:21:43,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 314 events. 166/314 cut-off events. For 782/782 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1125 event pairs, 34 based on Foata normal form. 3/316 useless extension candidates. Maximal degree in co-relation 1196. Up to 192 conditions per place. [2024-06-14 14:21:43,948 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 39 selfloop transitions, 17 changer transitions 1/59 dead transitions. [2024-06-14 14:21:43,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 484 flow [2024-06-14 14:21:43,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:21:43,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:21:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-14 14:21:43,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3524904214559387 [2024-06-14 14:21:43,949 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 266 flow. Second operand 9 states and 92 transitions. [2024-06-14 14:21:43,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 484 flow [2024-06-14 14:21:43,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 443 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-14 14:21:43,952 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 344 flow [2024-06-14 14:21:43,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=344, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-06-14 14:21:43,953 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-14 14:21:43,953 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 344 flow [2024-06-14 14:21:43,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:43,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:43,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:43,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 14:21:43,954 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:43,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:43,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1553674328, now seen corresponding path program 3 times [2024-06-14 14:21:43,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:43,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532878167] [2024-06-14 14:21:43,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:43,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:44,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:44,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532878167] [2024-06-14 14:21:44,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532878167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:44,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:44,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:21:44,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482647569] [2024-06-14 14:21:44,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:44,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:21:44,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:44,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:21:44,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:21:44,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:44,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 344 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:44,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:44,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:44,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:44,305 INFO L124 PetriNetUnfolderBase]: 172/327 cut-off events. [2024-06-14 14:21:44,305 INFO L125 PetriNetUnfolderBase]: For 940/940 co-relation queries the response was YES. [2024-06-14 14:21:44,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 327 events. 172/327 cut-off events. For 940/940 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1195 event pairs, 31 based on Foata normal form. 1/328 useless extension candidates. Maximal degree in co-relation 1325. Up to 199 conditions per place. [2024-06-14 14:21:44,307 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 45 selfloop transitions, 19 changer transitions 1/67 dead transitions. [2024-06-14 14:21:44,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 67 transitions, 564 flow [2024-06-14 14:21:44,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:21:44,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:21:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-14 14:21:44,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36015325670498083 [2024-06-14 14:21:44,309 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 344 flow. Second operand 9 states and 94 transitions. [2024-06-14 14:21:44,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 67 transitions, 564 flow [2024-06-14 14:21:44,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 67 transitions, 537 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 14:21:44,312 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 417 flow [2024-06-14 14:21:44,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2024-06-14 14:21:44,313 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-14 14:21:44,313 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 417 flow [2024-06-14 14:21:44,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:44,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:44,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:44,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 14:21:44,314 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:44,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:44,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1748134918, now seen corresponding path program 4 times [2024-06-14 14:21:44,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:44,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194698273] [2024-06-14 14:21:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:44,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:44,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:44,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194698273] [2024-06-14 14:21:44,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194698273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:44,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:44,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:21:44,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070173553] [2024-06-14 14:21:44,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:44,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:21:44,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:44,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:21:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:21:44,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:44,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 417 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:44,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:44,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:44,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:44,632 INFO L124 PetriNetUnfolderBase]: 178/339 cut-off events. [2024-06-14 14:21:44,633 INFO L125 PetriNetUnfolderBase]: For 1234/1238 co-relation queries the response was YES. [2024-06-14 14:21:44,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 339 events. 178/339 cut-off events. For 1234/1238 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1280 event pairs, 29 based on Foata normal form. 7/346 useless extension candidates. Maximal degree in co-relation 1464. Up to 209 conditions per place. [2024-06-14 14:21:44,635 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 49 selfloop transitions, 19 changer transitions 1/71 dead transitions. [2024-06-14 14:21:44,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 649 flow [2024-06-14 14:21:44,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:21:44,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:21:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-14 14:21:44,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2024-06-14 14:21:44,637 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 417 flow. Second operand 9 states and 95 transitions. [2024-06-14 14:21:44,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 649 flow [2024-06-14 14:21:44,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 607 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 14:21:44,641 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 471 flow [2024-06-14 14:21:44,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=471, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-06-14 14:21:44,642 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-14 14:21:44,642 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 471 flow [2024-06-14 14:21:44,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:44,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:44,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:44,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 14:21:44,643 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:44,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:44,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1742778672, now seen corresponding path program 5 times [2024-06-14 14:21:44,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:44,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269245719] [2024-06-14 14:21:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:44,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:44,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:44,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269245719] [2024-06-14 14:21:44,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269245719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:44,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:44,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:21:44,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227715207] [2024-06-14 14:21:44,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:44,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:21:44,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:44,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:21:44,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:21:44,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:44,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 471 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:44,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:44,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:44,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:44,978 INFO L124 PetriNetUnfolderBase]: 181/340 cut-off events. [2024-06-14 14:21:44,979 INFO L125 PetriNetUnfolderBase]: For 1490/1490 co-relation queries the response was YES. [2024-06-14 14:21:44,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1616 conditions, 340 events. 181/340 cut-off events. For 1490/1490 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1269 event pairs, 32 based on Foata normal form. 1/340 useless extension candidates. Maximal degree in co-relation 1567. Up to 211 conditions per place. [2024-06-14 14:21:44,981 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 48 selfloop transitions, 20 changer transitions 1/71 dead transitions. [2024-06-14 14:21:44,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 689 flow [2024-06-14 14:21:44,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:21:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:21:44,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-14 14:21:44,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3486590038314176 [2024-06-14 14:21:44,983 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 471 flow. Second operand 9 states and 91 transitions. [2024-06-14 14:21:44,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 689 flow [2024-06-14 14:21:44,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 71 transitions, 649 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 14:21:44,987 INFO L231 Difference]: Finished difference. Result has 77 places, 58 transitions, 519 flow [2024-06-14 14:21:44,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=519, PETRI_PLACES=77, PETRI_TRANSITIONS=58} [2024-06-14 14:21:44,988 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-14 14:21:44,988 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 58 transitions, 519 flow [2024-06-14 14:21:44,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:44,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:44,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:44,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 14:21:44,989 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:44,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:44,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1920923892, now seen corresponding path program 6 times [2024-06-14 14:21:44,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:44,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073560187] [2024-06-14 14:21:44,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:44,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:45,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:45,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:45,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073560187] [2024-06-14 14:21:45,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073560187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:45,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:45,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:21:45,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923140751] [2024-06-14 14:21:45,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:45,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:21:45,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:45,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:21:45,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:21:45,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:45,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 58 transitions, 519 flow. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:45,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:45,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:45,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:45,491 INFO L124 PetriNetUnfolderBase]: 181/340 cut-off events. [2024-06-14 14:21:45,491 INFO L125 PetriNetUnfolderBase]: For 1718/1718 co-relation queries the response was YES. [2024-06-14 14:21:45,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 340 events. 181/340 cut-off events. For 1718/1718 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1273 event pairs, 35 based on Foata normal form. 3/342 useless extension candidates. Maximal degree in co-relation 1621. Up to 219 conditions per place. [2024-06-14 14:21:45,494 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 50 selfloop transitions, 22 changer transitions 1/75 dead transitions. [2024-06-14 14:21:45,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 75 transitions, 757 flow [2024-06-14 14:21:45,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:21:45,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:21:45,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-14 14:21:45,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563218390804598 [2024-06-14 14:21:45,495 INFO L175 Difference]: Start difference. First operand has 77 places, 58 transitions, 519 flow. Second operand 9 states and 93 transitions. [2024-06-14 14:21:45,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 75 transitions, 757 flow [2024-06-14 14:21:45,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 701 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 14:21:45,500 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 578 flow [2024-06-14 14:21:45,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=578, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2024-06-14 14:21:45,501 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-14 14:21:45,501 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 578 flow [2024-06-14 14:21:45,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:45,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:45,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:45,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 14:21:45,502 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:45,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:45,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1820825740, now seen corresponding path program 1 times [2024-06-14 14:21:45,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:45,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465959877] [2024-06-14 14:21:45,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:45,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:45,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:45,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465959877] [2024-06-14 14:21:45,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465959877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:45,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:45,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:45,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368564732] [2024-06-14 14:21:45,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:45,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:45,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:45,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:45,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:45,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 578 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:45,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:45,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:45,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:46,031 INFO L124 PetriNetUnfolderBase]: 199/376 cut-off events. [2024-06-14 14:21:46,031 INFO L125 PetriNetUnfolderBase]: For 2368/2372 co-relation queries the response was YES. [2024-06-14 14:21:46,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1947 conditions, 376 events. 199/376 cut-off events. For 2368/2372 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1475 event pairs, 11 based on Foata normal form. 7/383 useless extension candidates. Maximal degree in co-relation 1892. Up to 157 conditions per place. [2024-06-14 14:21:46,035 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 64 selfloop transitions, 26 changer transitions 1/93 dead transitions. [2024-06-14 14:21:46,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 93 transitions, 954 flow [2024-06-14 14:21:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:46,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:46,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-14 14:21:46,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38620689655172413 [2024-06-14 14:21:46,036 INFO L175 Difference]: Start difference. First operand has 82 places, 62 transitions, 578 flow. Second operand 10 states and 112 transitions. [2024-06-14 14:21:46,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 93 transitions, 954 flow [2024-06-14 14:21:46,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 93 transitions, 871 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:46,043 INFO L231 Difference]: Finished difference. Result has 84 places, 64 transitions, 579 flow [2024-06-14 14:21:46,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=579, PETRI_PLACES=84, PETRI_TRANSITIONS=64} [2024-06-14 14:21:46,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-14 14:21:46,044 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 64 transitions, 579 flow [2024-06-14 14:21:46,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:46,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:46,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:46,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 14:21:46,045 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:46,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:46,045 INFO L85 PathProgramCache]: Analyzing trace with hash -986004792, now seen corresponding path program 2 times [2024-06-14 14:21:46,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:46,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868582410] [2024-06-14 14:21:46,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:46,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:46,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:46,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:46,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868582410] [2024-06-14 14:21:46,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868582410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:46,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:46,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:46,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992670494] [2024-06-14 14:21:46,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:46,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:46,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:46,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:46,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:46,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:46,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 64 transitions, 579 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:46,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:46,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:46,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:46,456 INFO L124 PetriNetUnfolderBase]: 217/410 cut-off events. [2024-06-14 14:21:46,457 INFO L125 PetriNetUnfolderBase]: For 2951/2955 co-relation queries the response was YES. [2024-06-14 14:21:46,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2171 conditions, 410 events. 217/410 cut-off events. For 2951/2955 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1684 event pairs, 30 based on Foata normal form. 7/417 useless extension candidates. Maximal degree in co-relation 2117. Up to 238 conditions per place. [2024-06-14 14:21:46,460 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 64 selfloop transitions, 25 changer transitions 1/92 dead transitions. [2024-06-14 14:21:46,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 92 transitions, 923 flow [2024-06-14 14:21:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-14 14:21:46,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-14 14:21:46,462 INFO L175 Difference]: Start difference. First operand has 84 places, 64 transitions, 579 flow. Second operand 10 states and 110 transitions. [2024-06-14 14:21:46,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 92 transitions, 923 flow [2024-06-14 14:21:46,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 92 transitions, 856 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 14:21:46,471 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 602 flow [2024-06-14 14:21:46,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=602, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2024-06-14 14:21:46,472 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-14 14:21:46,472 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 602 flow [2024-06-14 14:21:46,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:46,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:46,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:46,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 14:21:46,473 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:46,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash -985943412, now seen corresponding path program 3 times [2024-06-14 14:21:46,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:46,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669523688] [2024-06-14 14:21:46,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:46,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:46,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:46,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:46,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669523688] [2024-06-14 14:21:46,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669523688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:46,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:46,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:46,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940693789] [2024-06-14 14:21:46,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:46,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:46,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:46,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:46,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:46,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:46,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 602 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:46,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:46,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:46,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:46,858 INFO L124 PetriNetUnfolderBase]: 226/425 cut-off events. [2024-06-14 14:21:46,859 INFO L125 PetriNetUnfolderBase]: For 3312/3316 co-relation queries the response was YES. [2024-06-14 14:21:46,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 425 events. 226/425 cut-off events. For 3312/3316 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1747 event pairs, 38 based on Foata normal form. 7/432 useless extension candidates. Maximal degree in co-relation 2234. Up to 265 conditions per place. [2024-06-14 14:21:46,862 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 61 selfloop transitions, 26 changer transitions 1/90 dead transitions. [2024-06-14 14:21:46,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 899 flow [2024-06-14 14:21:46,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:46,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 14:21:46,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724137931034483 [2024-06-14 14:21:46,863 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 602 flow. Second operand 10 states and 108 transitions. [2024-06-14 14:21:46,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 899 flow [2024-06-14 14:21:46,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 90 transitions, 851 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-14 14:21:46,871 INFO L231 Difference]: Finished difference. Result has 89 places, 67 transitions, 633 flow [2024-06-14 14:21:46,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=633, PETRI_PLACES=89, PETRI_TRANSITIONS=67} [2024-06-14 14:21:46,873 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-14 14:21:46,873 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 67 transitions, 633 flow [2024-06-14 14:21:46,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:46,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:46,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:46,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 14:21:46,874 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:46,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash -985943257, now seen corresponding path program 1 times [2024-06-14 14:21:46,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:46,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68095807] [2024-06-14 14:21:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:46,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:47,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:47,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68095807] [2024-06-14 14:21:47,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68095807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:47,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:47,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:47,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748433922] [2024-06-14 14:21:47,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:47,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:47,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:47,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:47,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:47,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:47,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 67 transitions, 633 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:47,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:47,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:47,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:47,282 INFO L124 PetriNetUnfolderBase]: 235/444 cut-off events. [2024-06-14 14:21:47,282 INFO L125 PetriNetUnfolderBase]: For 3834/3838 co-relation queries the response was YES. [2024-06-14 14:21:47,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 444 events. 235/444 cut-off events. For 3834/3838 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1876 event pairs, 34 based on Foata normal form. 7/451 useless extension candidates. Maximal degree in co-relation 2349. Up to 280 conditions per place. [2024-06-14 14:21:47,286 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 62 selfloop transitions, 26 changer transitions 1/91 dead transitions. [2024-06-14 14:21:47,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 911 flow [2024-06-14 14:21:47,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-14 14:21:47,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724137931034483 [2024-06-14 14:21:47,288 INFO L175 Difference]: Start difference. First operand has 89 places, 67 transitions, 633 flow. Second operand 10 states and 108 transitions. [2024-06-14 14:21:47,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 911 flow [2024-06-14 14:21:47,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 857 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:47,301 INFO L231 Difference]: Finished difference. Result has 91 places, 68 transitions, 653 flow [2024-06-14 14:21:47,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=653, PETRI_PLACES=91, PETRI_TRANSITIONS=68} [2024-06-14 14:21:47,302 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-14 14:21:47,302 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 68 transitions, 653 flow [2024-06-14 14:21:47,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:47,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:47,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:47,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 14:21:47,304 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:47,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:47,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1648791833, now seen corresponding path program 2 times [2024-06-14 14:21:47,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:47,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948658289] [2024-06-14 14:21:47,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:47,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:47,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:47,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948658289] [2024-06-14 14:21:47,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948658289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:47,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:47,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:47,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781995855] [2024-06-14 14:21:47,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:47,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:47,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:47,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:47,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:47,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:47,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 68 transitions, 653 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:47,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:47,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:47,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:47,705 INFO L124 PetriNetUnfolderBase]: 244/459 cut-off events. [2024-06-14 14:21:47,706 INFO L125 PetriNetUnfolderBase]: For 4098/4098 co-relation queries the response was YES. [2024-06-14 14:21:47,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2532 conditions, 459 events. 244/459 cut-off events. For 4098/4098 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1945 event pairs, 38 based on Foata normal form. 3/462 useless extension candidates. Maximal degree in co-relation 2476. Up to 310 conditions per place. [2024-06-14 14:21:47,709 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 65 selfloop transitions, 21 changer transitions 1/89 dead transitions. [2024-06-14 14:21:47,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 89 transitions, 921 flow [2024-06-14 14:21:47,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:47,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:47,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 14:21:47,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2024-06-14 14:21:47,711 INFO L175 Difference]: Start difference. First operand has 91 places, 68 transitions, 653 flow. Second operand 10 states and 104 transitions. [2024-06-14 14:21:47,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 89 transitions, 921 flow [2024-06-14 14:21:47,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 89 transitions, 859 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:47,720 INFO L231 Difference]: Finished difference. Result has 93 places, 69 transitions, 657 flow [2024-06-14 14:21:47,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=657, PETRI_PLACES=93, PETRI_TRANSITIONS=69} [2024-06-14 14:21:47,721 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-14 14:21:47,721 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 69 transitions, 657 flow [2024-06-14 14:21:47,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:47,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:47,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:47,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 14:21:47,723 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:47,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:47,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1648795708, now seen corresponding path program 4 times [2024-06-14 14:21:47,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:47,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592077673] [2024-06-14 14:21:47,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:47,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:47,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:47,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592077673] [2024-06-14 14:21:47,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592077673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:47,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:47,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:47,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702787089] [2024-06-14 14:21:47,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:47,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:47,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:47,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:47,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:48,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:48,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 69 transitions, 657 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:48,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:48,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:48,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:48,174 INFO L124 PetriNetUnfolderBase]: 262/491 cut-off events. [2024-06-14 14:21:48,175 INFO L125 PetriNetUnfolderBase]: For 4948/4952 co-relation queries the response was YES. [2024-06-14 14:21:48,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2755 conditions, 491 events. 262/491 cut-off events. For 4948/4952 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2134 event pairs, 32 based on Foata normal form. 7/498 useless extension candidates. Maximal degree in co-relation 2698. Up to 328 conditions per place. [2024-06-14 14:21:48,179 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 71 selfloop transitions, 20 changer transitions 1/94 dead transitions. [2024-06-14 14:21:48,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 94 transitions, 1009 flow [2024-06-14 14:21:48,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:48,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-14 14:21:48,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36551724137931035 [2024-06-14 14:21:48,180 INFO L175 Difference]: Start difference. First operand has 93 places, 69 transitions, 657 flow. Second operand 10 states and 106 transitions. [2024-06-14 14:21:48,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 94 transitions, 1009 flow [2024-06-14 14:21:48,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 955 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:48,191 INFO L231 Difference]: Finished difference. Result has 96 places, 71 transitions, 687 flow [2024-06-14 14:21:48,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=687, PETRI_PLACES=96, PETRI_TRANSITIONS=71} [2024-06-14 14:21:48,191 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-14 14:21:48,191 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 71 transitions, 687 flow [2024-06-14 14:21:48,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:48,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:48,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:48,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 14:21:48,192 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:48,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:48,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1790001328, now seen corresponding path program 5 times [2024-06-14 14:21:48,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:48,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721503020] [2024-06-14 14:21:48,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:48,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:48,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:48,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721503020] [2024-06-14 14:21:48,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721503020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:48,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:48,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:48,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904637249] [2024-06-14 14:21:48,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:48,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:48,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:48,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:48,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:48,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:48,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 71 transitions, 687 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:48,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:48,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:48,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:48,657 INFO L124 PetriNetUnfolderBase]: 271/508 cut-off events. [2024-06-14 14:21:48,657 INFO L125 PetriNetUnfolderBase]: For 5670/5674 co-relation queries the response was YES. [2024-06-14 14:21:48,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2894 conditions, 508 events. 271/508 cut-off events. For 5670/5674 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2255 event pairs, 36 based on Foata normal form. 7/515 useless extension candidates. Maximal degree in co-relation 2835. Up to 355 conditions per place. [2024-06-14 14:21:48,662 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 68 selfloop transitions, 21 changer transitions 1/92 dead transitions. [2024-06-14 14:21:48,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 92 transitions, 988 flow [2024-06-14 14:21:48,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:48,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:48,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 14:21:48,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2024-06-14 14:21:48,663 INFO L175 Difference]: Start difference. First operand has 96 places, 71 transitions, 687 flow. Second operand 10 states and 104 transitions. [2024-06-14 14:21:48,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 92 transitions, 988 flow [2024-06-14 14:21:48,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 92 transitions, 944 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-14 14:21:48,673 INFO L231 Difference]: Finished difference. Result has 99 places, 72 transitions, 716 flow [2024-06-14 14:21:48,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=716, PETRI_PLACES=99, PETRI_TRANSITIONS=72} [2024-06-14 14:21:48,674 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-14 14:21:48,674 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 72 transitions, 716 flow [2024-06-14 14:21:48,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:48,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:48,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:48,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 14:21:48,675 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:48,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:48,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1642155353, now seen corresponding path program 3 times [2024-06-14 14:21:48,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:48,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503254414] [2024-06-14 14:21:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:48,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:48,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:48,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:48,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503254414] [2024-06-14 14:21:48,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503254414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:48,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:48,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:48,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496514068] [2024-06-14 14:21:48,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:48,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:48,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:48,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:48,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:48,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:48,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 72 transitions, 716 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:48,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:48,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:48,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:49,125 INFO L124 PetriNetUnfolderBase]: 289/542 cut-off events. [2024-06-14 14:21:49,125 INFO L125 PetriNetUnfolderBase]: For 6153/6157 co-relation queries the response was YES. [2024-06-14 14:21:49,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3070 conditions, 542 events. 289/542 cut-off events. For 6153/6157 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2459 event pairs, 38 based on Foata normal form. 13/555 useless extension candidates. Maximal degree in co-relation 3010. Up to 378 conditions per place. [2024-06-14 14:21:49,130 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 75 selfloop transitions, 19 changer transitions 1/97 dead transitions. [2024-06-14 14:21:49,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 97 transitions, 1029 flow [2024-06-14 14:21:49,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:49,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-14 14:21:49,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3689655172413793 [2024-06-14 14:21:49,132 INFO L175 Difference]: Start difference. First operand has 99 places, 72 transitions, 716 flow. Second operand 10 states and 107 transitions. [2024-06-14 14:21:49,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 97 transitions, 1029 flow [2024-06-14 14:21:49,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 97 transitions, 979 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:49,143 INFO L231 Difference]: Finished difference. Result has 102 places, 74 transitions, 743 flow [2024-06-14 14:21:49,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=743, PETRI_PLACES=102, PETRI_TRANSITIONS=74} [2024-06-14 14:21:49,144 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-14 14:21:49,144 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 74 transitions, 743 flow [2024-06-14 14:21:49,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:49,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:49,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:49,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 14:21:49,145 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:49,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:49,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1642391728, now seen corresponding path program 6 times [2024-06-14 14:21:49,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:49,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822700097] [2024-06-14 14:21:49,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:49,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:49,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:49,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:49,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822700097] [2024-06-14 14:21:49,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822700097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:49,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:49,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:49,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767100150] [2024-06-14 14:21:49,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:49,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:49,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:49,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:49,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:49,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:49,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 74 transitions, 743 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:49,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:49,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:49,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:49,636 INFO L124 PetriNetUnfolderBase]: 298/559 cut-off events. [2024-06-14 14:21:49,636 INFO L125 PetriNetUnfolderBase]: For 7239/7243 co-relation queries the response was YES. [2024-06-14 14:21:49,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3290 conditions, 559 events. 298/559 cut-off events. For 7239/7243 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2580 event pairs, 38 based on Foata normal form. 7/566 useless extension candidates. Maximal degree in co-relation 3228. Up to 394 conditions per place. [2024-06-14 14:21:49,641 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 71 selfloop transitions, 21 changer transitions 1/95 dead transitions. [2024-06-14 14:21:49,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 95 transitions, 1058 flow [2024-06-14 14:21:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 14:21:49,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2024-06-14 14:21:49,643 INFO L175 Difference]: Start difference. First operand has 102 places, 74 transitions, 743 flow. Second operand 10 states and 104 transitions. [2024-06-14 14:21:49,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 95 transitions, 1058 flow [2024-06-14 14:21:49,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 95 transitions, 1015 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 14:21:49,658 INFO L231 Difference]: Finished difference. Result has 106 places, 75 transitions, 775 flow [2024-06-14 14:21:49,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=775, PETRI_PLACES=106, PETRI_TRANSITIONS=75} [2024-06-14 14:21:49,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-14 14:21:49,659 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 75 transitions, 775 flow [2024-06-14 14:21:49,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:49,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:49,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:49,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 14:21:49,660 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:49,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:49,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1642391573, now seen corresponding path program 4 times [2024-06-14 14:21:49,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:49,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943215488] [2024-06-14 14:21:49,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:49,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:49,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:49,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943215488] [2024-06-14 14:21:49,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943215488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:49,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:49,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:49,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056597009] [2024-06-14 14:21:49,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:49,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:49,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:49,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:49,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:49,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:49,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 75 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:49,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:49,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:49,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:50,107 INFO L124 PetriNetUnfolderBase]: 307/574 cut-off events. [2024-06-14 14:21:50,107 INFO L125 PetriNetUnfolderBase]: For 7631/7631 co-relation queries the response was YES. [2024-06-14 14:21:50,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3389 conditions, 574 events. 307/574 cut-off events. For 7631/7631 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2657 event pairs, 36 based on Foata normal form. 3/577 useless extension candidates. Maximal degree in co-relation 3325. Up to 409 conditions per place. [2024-06-14 14:21:50,113 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 72 selfloop transitions, 21 changer transitions 1/96 dead transitions. [2024-06-14 14:21:50,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 96 transitions, 1063 flow [2024-06-14 14:21:50,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:50,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:50,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 14:21:50,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2024-06-14 14:21:50,115 INFO L175 Difference]: Start difference. First operand has 106 places, 75 transitions, 775 flow. Second operand 10 states and 104 transitions. [2024-06-14 14:21:50,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 96 transitions, 1063 flow [2024-06-14 14:21:50,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 96 transitions, 1013 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:50,130 INFO L231 Difference]: Finished difference. Result has 108 places, 76 transitions, 795 flow [2024-06-14 14:21:50,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=795, PETRI_PLACES=108, PETRI_TRANSITIONS=76} [2024-06-14 14:21:50,130 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-14 14:21:50,130 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 76 transitions, 795 flow [2024-06-14 14:21:50,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:50,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:50,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:50,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 14:21:50,131 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:50,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:50,132 INFO L85 PathProgramCache]: Analyzing trace with hash -802309495, now seen corresponding path program 5 times [2024-06-14 14:21:50,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:50,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040445491] [2024-06-14 14:21:50,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:50,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:50,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:50,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040445491] [2024-06-14 14:21:50,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040445491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:50,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:50,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:50,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986208181] [2024-06-14 14:21:50,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:50,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:50,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:50,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:50,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:50,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:50,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 76 transitions, 795 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:50,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:50,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:50,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:50,573 INFO L124 PetriNetUnfolderBase]: 325/604 cut-off events. [2024-06-14 14:21:50,573 INFO L125 PetriNetUnfolderBase]: For 8521/8525 co-relation queries the response was YES. [2024-06-14 14:21:50,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3591 conditions, 604 events. 325/604 cut-off events. For 8521/8525 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2864 event pairs, 41 based on Foata normal form. 13/616 useless extension candidates. Maximal degree in co-relation 3526. Up to 429 conditions per place. [2024-06-14 14:21:50,581 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 75 selfloop transitions, 20 changer transitions 1/98 dead transitions. [2024-06-14 14:21:50,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 98 transitions, 1109 flow [2024-06-14 14:21:50,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:50,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-14 14:21:50,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2024-06-14 14:21:50,582 INFO L175 Difference]: Start difference. First operand has 108 places, 76 transitions, 795 flow. Second operand 10 states and 104 transitions. [2024-06-14 14:21:50,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 98 transitions, 1109 flow [2024-06-14 14:21:50,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 98 transitions, 1049 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:50,597 INFO L231 Difference]: Finished difference. Result has 111 places, 78 transitions, 819 flow [2024-06-14 14:21:50,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=819, PETRI_PLACES=111, PETRI_TRANSITIONS=78} [2024-06-14 14:21:50,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-14 14:21:50,598 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 78 transitions, 819 flow [2024-06-14 14:21:50,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:50,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:50,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:50,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 14:21:50,599 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:50,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:50,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1660825599, now seen corresponding path program 6 times [2024-06-14 14:21:50,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:50,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283676433] [2024-06-14 14:21:50,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:50,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:50,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:50,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283676433] [2024-06-14 14:21:50,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283676433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:50,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:50,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:50,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473550324] [2024-06-14 14:21:50,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:50,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:50,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:50,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:50,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:50,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:50,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 78 transitions, 819 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:50,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:50,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:50,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:51,034 INFO L124 PetriNetUnfolderBase]: 334/621 cut-off events. [2024-06-14 14:21:51,034 INFO L125 PetriNetUnfolderBase]: For 9475/9479 co-relation queries the response was YES. [2024-06-14 14:21:51,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3754 conditions, 621 events. 334/621 cut-off events. For 9475/9479 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2960 event pairs, 41 based on Foata normal form. 7/627 useless extension candidates. Maximal degree in co-relation 3687. Up to 445 conditions per place. [2024-06-14 14:21:51,040 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 71 selfloop transitions, 22 changer transitions 1/96 dead transitions. [2024-06-14 14:21:51,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 96 transitions, 1105 flow [2024-06-14 14:21:51,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 14:21:51,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482758620689655 [2024-06-14 14:21:51,041 INFO L175 Difference]: Start difference. First operand has 111 places, 78 transitions, 819 flow. Second operand 10 states and 101 transitions. [2024-06-14 14:21:51,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 96 transitions, 1105 flow [2024-06-14 14:21:51,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 96 transitions, 1057 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 14:21:51,093 INFO L231 Difference]: Finished difference. Result has 115 places, 79 transitions, 847 flow [2024-06-14 14:21:51,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=847, PETRI_PLACES=115, PETRI_TRANSITIONS=79} [2024-06-14 14:21:51,093 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-06-14 14:21:51,093 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 79 transitions, 847 flow [2024-06-14 14:21:51,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:51,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:51,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:51,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 14:21:51,094 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:51,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:51,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1660825754, now seen corresponding path program 7 times [2024-06-14 14:21:51,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:51,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016137745] [2024-06-14 14:21:51,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:51,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:51,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:51,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016137745] [2024-06-14 14:21:51,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016137745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:51,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:51,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:51,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795339009] [2024-06-14 14:21:51,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:51,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:51,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:51,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:51,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:51,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:51,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 79 transitions, 847 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:51,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:51,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:51,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:51,597 INFO L124 PetriNetUnfolderBase]: 343/636 cut-off events. [2024-06-14 14:21:51,597 INFO L125 PetriNetUnfolderBase]: For 10506/10510 co-relation queries the response was YES. [2024-06-14 14:21:51,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3925 conditions, 636 events. 343/636 cut-off events. For 10506/10510 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3027 event pairs, 45 based on Foata normal form. 7/642 useless extension candidates. Maximal degree in co-relation 3856. Up to 460 conditions per place. [2024-06-14 14:21:51,608 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 72 selfloop transitions, 22 changer transitions 1/97 dead transitions. [2024-06-14 14:21:51,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 97 transitions, 1170 flow [2024-06-14 14:21:51,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:51,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:51,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 14:21:51,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482758620689655 [2024-06-14 14:21:51,610 INFO L175 Difference]: Start difference. First operand has 115 places, 79 transitions, 847 flow. Second operand 10 states and 101 transitions. [2024-06-14 14:21:51,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 97 transitions, 1170 flow [2024-06-14 14:21:51,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 97 transitions, 1106 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:51,628 INFO L231 Difference]: Finished difference. Result has 117 places, 80 transitions, 862 flow [2024-06-14 14:21:51,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=862, PETRI_PLACES=117, PETRI_TRANSITIONS=80} [2024-06-14 14:21:51,628 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-14 14:21:51,629 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 80 transitions, 862 flow [2024-06-14 14:21:51,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:51,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:51,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:51,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 14:21:51,629 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:51,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1808496734, now seen corresponding path program 8 times [2024-06-14 14:21:51,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:51,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32141387] [2024-06-14 14:21:51,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:51,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:51,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:51,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32141387] [2024-06-14 14:21:51,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32141387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:51,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:51,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:51,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401828347] [2024-06-14 14:21:51,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:51,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:51,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:51,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:51,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:51,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:51,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 80 transitions, 862 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:51,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:51,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:51,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:52,095 INFO L124 PetriNetUnfolderBase]: 352/653 cut-off events. [2024-06-14 14:21:52,095 INFO L125 PetriNetUnfolderBase]: For 11260/11260 co-relation queries the response was YES. [2024-06-14 14:21:52,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4055 conditions, 653 events. 352/653 cut-off events. For 11260/11260 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3156 event pairs, 41 based on Foata normal form. 3/655 useless extension candidates. Maximal degree in co-relation 3985. Up to 460 conditions per place. [2024-06-14 14:21:52,101 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 76 selfloop transitions, 22 changer transitions 1/101 dead transitions. [2024-06-14 14:21:52,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 101 transitions, 1245 flow [2024-06-14 14:21:52,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:52,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:52,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-14 14:21:52,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35517241379310344 [2024-06-14 14:21:52,103 INFO L175 Difference]: Start difference. First operand has 117 places, 80 transitions, 862 flow. Second operand 10 states and 103 transitions. [2024-06-14 14:21:52,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 101 transitions, 1245 flow [2024-06-14 14:21:52,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 101 transitions, 1191 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:52,127 INFO L231 Difference]: Finished difference. Result has 119 places, 81 transitions, 889 flow [2024-06-14 14:21:52,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=889, PETRI_PLACES=119, PETRI_TRANSITIONS=81} [2024-06-14 14:21:52,128 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-14 14:21:52,128 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 81 transitions, 889 flow [2024-06-14 14:21:52,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:52,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:52,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:52,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 14:21:52,129 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:52,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:52,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1808435199, now seen corresponding path program 7 times [2024-06-14 14:21:52,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:52,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585099249] [2024-06-14 14:21:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:52,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:52,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:52,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:52,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585099249] [2024-06-14 14:21:52,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585099249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:52,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:52,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:52,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142365190] [2024-06-14 14:21:52,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:52,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:52,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:52,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:52,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:52,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 81 transitions, 889 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:52,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:52,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:52,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:52,586 INFO L124 PetriNetUnfolderBase]: 361/668 cut-off events. [2024-06-14 14:21:52,586 INFO L125 PetriNetUnfolderBase]: For 11942/11946 co-relation queries the response was YES. [2024-06-14 14:21:52,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4173 conditions, 668 events. 361/668 cut-off events. For 11942/11946 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3221 event pairs, 43 based on Foata normal form. 7/674 useless extension candidates. Maximal degree in co-relation 4102. Up to 487 conditions per place. [2024-06-14 14:21:52,592 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 73 selfloop transitions, 23 changer transitions 1/99 dead transitions. [2024-06-14 14:21:52,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 99 transitions, 1183 flow [2024-06-14 14:21:52,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:52,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:52,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 14:21:52,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482758620689655 [2024-06-14 14:21:52,593 INFO L175 Difference]: Start difference. First operand has 119 places, 81 transitions, 889 flow. Second operand 10 states and 101 transitions. [2024-06-14 14:21:52,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 99 transitions, 1183 flow [2024-06-14 14:21:52,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 99 transitions, 1121 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 14:21:52,615 INFO L231 Difference]: Finished difference. Result has 120 places, 82 transitions, 907 flow [2024-06-14 14:21:52,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=907, PETRI_PLACES=120, PETRI_TRANSITIONS=82} [2024-06-14 14:21:52,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-14 14:21:52,616 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 82 transitions, 907 flow [2024-06-14 14:21:52,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:52,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:52,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:52,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 14:21:52,617 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:52,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:52,617 INFO L85 PathProgramCache]: Analyzing trace with hash -808946130, now seen corresponding path program 9 times [2024-06-14 14:21:52,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:52,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612621924] [2024-06-14 14:21:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:52,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:52,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:52,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:52,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612621924] [2024-06-14 14:21:52,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612621924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:52,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:52,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:52,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579348750] [2024-06-14 14:21:52,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:52,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:52,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:52,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:52,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:52,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:52,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 82 transitions, 907 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:52,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:52,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:52,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:53,048 INFO L124 PetriNetUnfolderBase]: 370/685 cut-off events. [2024-06-14 14:21:53,048 INFO L125 PetriNetUnfolderBase]: For 13341/13341 co-relation queries the response was YES. [2024-06-14 14:21:53,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4345 conditions, 685 events. 370/685 cut-off events. For 13341/13341 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3346 event pairs, 43 based on Foata normal form. 3/687 useless extension candidates. Maximal degree in co-relation 4275. Up to 502 conditions per place. [2024-06-14 14:21:53,053 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 74 selfloop transitions, 23 changer transitions 1/100 dead transitions. [2024-06-14 14:21:53,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 100 transitions, 1242 flow [2024-06-14 14:21:53,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:53,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:53,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 14:21:53,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482758620689655 [2024-06-14 14:21:53,055 INFO L175 Difference]: Start difference. First operand has 120 places, 82 transitions, 907 flow. Second operand 10 states and 101 transitions. [2024-06-14 14:21:53,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 100 transitions, 1242 flow [2024-06-14 14:21:53,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 100 transitions, 1174 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:53,075 INFO L231 Difference]: Finished difference. Result has 122 places, 83 transitions, 924 flow [2024-06-14 14:21:53,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=924, PETRI_PLACES=122, PETRI_TRANSITIONS=83} [2024-06-14 14:21:53,076 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-14 14:21:53,076 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 83 transitions, 924 flow [2024-06-14 14:21:53,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:53,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:53,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:53,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 14:21:53,076 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:53,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:53,077 INFO L85 PathProgramCache]: Analyzing trace with hash -580664455, now seen corresponding path program 8 times [2024-06-14 14:21:53,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:53,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614434671] [2024-06-14 14:21:53,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:53,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:53,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:53,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:53,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614434671] [2024-06-14 14:21:53,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614434671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:53,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:53,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:53,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049911430] [2024-06-14 14:21:53,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:53,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:53,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:53,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:53,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:53,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:53,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 83 transitions, 924 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:53,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:53,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:53,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:53,508 INFO L124 PetriNetUnfolderBase]: 388/721 cut-off events. [2024-06-14 14:21:53,509 INFO L125 PetriNetUnfolderBase]: For 14082/14086 co-relation queries the response was YES. [2024-06-14 14:21:53,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4501 conditions, 721 events. 388/721 cut-off events. For 14082/14086 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3596 event pairs, 49 based on Foata normal form. 9/729 useless extension candidates. Maximal degree in co-relation 4430. Up to 525 conditions per place. [2024-06-14 14:21:53,514 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 78 selfloop transitions, 24 changer transitions 1/105 dead transitions. [2024-06-14 14:21:53,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 105 transitions, 1261 flow [2024-06-14 14:21:53,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:53,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:53,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-14 14:21:53,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2024-06-14 14:21:53,519 INFO L175 Difference]: Start difference. First operand has 122 places, 83 transitions, 924 flow. Second operand 10 states and 105 transitions. [2024-06-14 14:21:53,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 105 transitions, 1261 flow [2024-06-14 14:21:53,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 105 transitions, 1199 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:53,546 INFO L231 Difference]: Finished difference. Result has 125 places, 85 transitions, 961 flow [2024-06-14 14:21:53,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=961, PETRI_PLACES=125, PETRI_TRANSITIONS=85} [2024-06-14 14:21:53,549 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-14 14:21:53,549 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 85 transitions, 961 flow [2024-06-14 14:21:53,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:53,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:53,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:53,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 14:21:53,550 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:53,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:53,550 INFO L85 PathProgramCache]: Analyzing trace with hash -580900675, now seen corresponding path program 9 times [2024-06-14 14:21:53,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:53,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332332361] [2024-06-14 14:21:53,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:53,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:53,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:53,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:53,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332332361] [2024-06-14 14:21:53,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332332361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:53,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:53,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:53,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830589690] [2024-06-14 14:21:53,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:53,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:53,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:53,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:53,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:53,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:53,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 85 transitions, 961 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:53,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:53,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:53,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:53,954 INFO L124 PetriNetUnfolderBase]: 397/736 cut-off events. [2024-06-14 14:21:53,954 INFO L125 PetriNetUnfolderBase]: For 15301/15305 co-relation queries the response was YES. [2024-06-14 14:21:53,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4705 conditions, 736 events. 397/736 cut-off events. For 15301/15305 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3700 event pairs, 47 based on Foata normal form. 3/738 useless extension candidates. Maximal degree in co-relation 4632. Up to 541 conditions per place. [2024-06-14 14:21:53,960 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 74 selfloop transitions, 26 changer transitions 1/103 dead transitions. [2024-06-14 14:21:53,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 103 transitions, 1269 flow [2024-06-14 14:21:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:53,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:53,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 14:21:53,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35172413793103446 [2024-06-14 14:21:53,961 INFO L175 Difference]: Start difference. First operand has 125 places, 85 transitions, 961 flow. Second operand 10 states and 102 transitions. [2024-06-14 14:21:53,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 103 transitions, 1269 flow [2024-06-14 14:21:53,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 103 transitions, 1207 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-14 14:21:53,986 INFO L231 Difference]: Finished difference. Result has 129 places, 86 transitions, 989 flow [2024-06-14 14:21:53,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=989, PETRI_PLACES=129, PETRI_TRANSITIONS=86} [2024-06-14 14:21:53,988 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-14 14:21:53,988 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 86 transitions, 989 flow [2024-06-14 14:21:53,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:53,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:53,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:53,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 14:21:53,989 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:53,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:53,989 INFO L85 PathProgramCache]: Analyzing trace with hash -580900830, now seen corresponding path program 10 times [2024-06-14 14:21:53,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:53,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935363636] [2024-06-14 14:21:53,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:53,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:53,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:54,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:54,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:54,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935363636] [2024-06-14 14:21:54,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935363636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:54,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:54,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:54,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250230891] [2024-06-14 14:21:54,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:54,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:54,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:54,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:54,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:54,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:54,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 86 transitions, 989 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:54,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:54,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:54,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:54,404 INFO L124 PetriNetUnfolderBase]: 391/727 cut-off events. [2024-06-14 14:21:54,406 INFO L125 PetriNetUnfolderBase]: For 14715/14719 co-relation queries the response was YES. [2024-06-14 14:21:54,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4526 conditions, 727 events. 391/727 cut-off events. For 14715/14719 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3677 event pairs, 45 based on Foata normal form. 3/729 useless extension candidates. Maximal degree in co-relation 4451. Up to 532 conditions per place. [2024-06-14 14:21:54,411 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 74 selfloop transitions, 26 changer transitions 1/103 dead transitions. [2024-06-14 14:21:54,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 103 transitions, 1305 flow [2024-06-14 14:21:54,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:54,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:54,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-14 14:21:54,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35172413793103446 [2024-06-14 14:21:54,412 INFO L175 Difference]: Start difference. First operand has 129 places, 86 transitions, 989 flow. Second operand 10 states and 102 transitions. [2024-06-14 14:21:54,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 103 transitions, 1305 flow [2024-06-14 14:21:54,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 103 transitions, 1227 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 14:21:54,444 INFO L231 Difference]: Finished difference. Result has 131 places, 86 transitions, 967 flow [2024-06-14 14:21:54,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=911, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=967, PETRI_PLACES=131, PETRI_TRANSITIONS=86} [2024-06-14 14:21:54,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-14 14:21:54,445 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 86 transitions, 967 flow [2024-06-14 14:21:54,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:54,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:54,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:54,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 14:21:54,446 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:54,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash -572620885, now seen corresponding path program 10 times [2024-06-14 14:21:54,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:54,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668471902] [2024-06-14 14:21:54,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:54,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:54,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:54,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668471902] [2024-06-14 14:21:54,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668471902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:54,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:54,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 14:21:54,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270618842] [2024-06-14 14:21:54,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:54,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 14:21:54,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:54,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 14:21:54,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-14 14:21:54,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:54,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 86 transitions, 967 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:54,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:54,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:54,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:54,823 INFO L124 PetriNetUnfolderBase]: 391/731 cut-off events. [2024-06-14 14:21:54,823 INFO L125 PetriNetUnfolderBase]: For 14767/14771 co-relation queries the response was YES. [2024-06-14 14:21:54,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4518 conditions, 731 events. 391/731 cut-off events. For 14767/14771 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 3680 event pairs, 48 based on Foata normal form. 9/739 useless extension candidates. Maximal degree in co-relation 4442. Up to 546 conditions per place. [2024-06-14 14:21:54,828 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 79 selfloop transitions, 24 changer transitions 0/105 dead transitions. [2024-06-14 14:21:54,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 105 transitions, 1281 flow [2024-06-14 14:21:54,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 14:21:54,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 14:21:54,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-14 14:21:54,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482758620689655 [2024-06-14 14:21:54,830 INFO L175 Difference]: Start difference. First operand has 131 places, 86 transitions, 967 flow. Second operand 10 states and 101 transitions. [2024-06-14 14:21:54,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 105 transitions, 1281 flow [2024-06-14 14:21:54,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 105 transitions, 1185 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 14:21:54,858 INFO L231 Difference]: Finished difference. Result has 133 places, 87 transitions, 963 flow [2024-06-14 14:21:54,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=963, PETRI_PLACES=133, PETRI_TRANSITIONS=87} [2024-06-14 14:21:54,858 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-14 14:21:54,859 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 87 transitions, 963 flow [2024-06-14 14:21:54,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:54,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:54,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:54,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 14:21:54,859 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:54,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:54,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1236290187, now seen corresponding path program 1 times [2024-06-14 14:21:54,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:54,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013577243] [2024-06-14 14:21:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:54,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:55,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:55,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013577243] [2024-06-14 14:21:55,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013577243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:55,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:55,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:55,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810354931] [2024-06-14 14:21:55,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:55,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:55,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:55,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:55,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:55,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:55,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 87 transitions, 963 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:55,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:55,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:55,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:55,414 INFO L124 PetriNetUnfolderBase]: 418/784 cut-off events. [2024-06-14 14:21:55,414 INFO L125 PetriNetUnfolderBase]: For 18227/18231 co-relation queries the response was YES. [2024-06-14 14:21:55,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 784 events. 418/784 cut-off events. For 18227/18231 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4008 event pairs, 11 based on Foata normal form. 13/797 useless extension candidates. Maximal degree in co-relation 4761. Up to 442 conditions per place. [2024-06-14 14:21:55,424 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 71 selfloop transitions, 27 changer transitions 22/122 dead transitions. [2024-06-14 14:21:55,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 122 transitions, 1527 flow [2024-06-14 14:21:55,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:55,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 14:21:55,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38557993730407525 [2024-06-14 14:21:55,427 INFO L175 Difference]: Start difference. First operand has 133 places, 87 transitions, 963 flow. Second operand 11 states and 123 transitions. [2024-06-14 14:21:55,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 122 transitions, 1527 flow [2024-06-14 14:21:55,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 122 transitions, 1410 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-14 14:21:55,461 INFO L231 Difference]: Finished difference. Result has 132 places, 83 transitions, 860 flow [2024-06-14 14:21:55,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=860, PETRI_PLACES=132, PETRI_TRANSITIONS=83} [2024-06-14 14:21:55,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-14 14:21:55,462 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 83 transitions, 860 flow [2024-06-14 14:21:55,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:55,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:55,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:55,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 14:21:55,463 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:55,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:55,463 INFO L85 PathProgramCache]: Analyzing trace with hash -501376663, now seen corresponding path program 2 times [2024-06-14 14:21:55,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:55,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580491887] [2024-06-14 14:21:55,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:55,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:55,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:55,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580491887] [2024-06-14 14:21:55,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580491887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:55,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:55,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:55,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427856666] [2024-06-14 14:21:55,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:55,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:55,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:55,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:55,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:55,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 83 transitions, 860 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:55,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:55,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:55,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:55,957 INFO L124 PetriNetUnfolderBase]: 377/705 cut-off events. [2024-06-14 14:21:55,957 INFO L125 PetriNetUnfolderBase]: For 16016/16020 co-relation queries the response was YES. [2024-06-14 14:21:55,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4222 conditions, 705 events. 377/705 cut-off events. For 16016/16020 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3532 event pairs, 37 based on Foata normal form. 13/718 useless extension candidates. Maximal degree in co-relation 4149. Up to 443 conditions per place. [2024-06-14 14:21:55,963 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 68 selfloop transitions, 24 changer transitions 18/112 dead transitions. [2024-06-14 14:21:55,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 112 transitions, 1334 flow [2024-06-14 14:21:55,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:55,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-14 14:21:55,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3667711598746082 [2024-06-14 14:21:55,964 INFO L175 Difference]: Start difference. First operand has 132 places, 83 transitions, 860 flow. Second operand 11 states and 117 transitions. [2024-06-14 14:21:55,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 112 transitions, 1334 flow [2024-06-14 14:21:55,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 112 transitions, 1264 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 14:21:55,996 INFO L231 Difference]: Finished difference. Result has 126 places, 80 transitions, 806 flow [2024-06-14 14:21:55,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=806, PETRI_PLACES=126, PETRI_TRANSITIONS=80} [2024-06-14 14:21:55,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-14 14:21:55,997 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 80 transitions, 806 flow [2024-06-14 14:21:55,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:55,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:55,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:55,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 14:21:55,997 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:55,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:55,998 INFO L85 PathProgramCache]: Analyzing trace with hash -499473883, now seen corresponding path program 3 times [2024-06-14 14:21:55,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:55,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337983800] [2024-06-14 14:21:55,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:55,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:56,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:56,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:56,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:56,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337983800] [2024-06-14 14:21:56,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337983800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:56,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:56,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:56,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597148121] [2024-06-14 14:21:56,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:56,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:56,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:56,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:56,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:56,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:56,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 80 transitions, 806 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:56,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:56,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:56,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:56,512 INFO L124 PetriNetUnfolderBase]: 357/669 cut-off events. [2024-06-14 14:21:56,513 INFO L125 PetriNetUnfolderBase]: For 15364/15368 co-relation queries the response was YES. [2024-06-14 14:21:56,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3916 conditions, 669 events. 357/669 cut-off events. For 15364/15368 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3316 event pairs, 37 based on Foata normal form. 13/682 useless extension candidates. Maximal degree in co-relation 3846. Up to 423 conditions per place. [2024-06-14 14:21:56,517 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 66 selfloop transitions, 25 changer transitions 13/106 dead transitions. [2024-06-14 14:21:56,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 106 transitions, 1206 flow [2024-06-14 14:21:56,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:56,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:56,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-14 14:21:56,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3573667711598746 [2024-06-14 14:21:56,518 INFO L175 Difference]: Start difference. First operand has 126 places, 80 transitions, 806 flow. Second operand 11 states and 114 transitions. [2024-06-14 14:21:56,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 106 transitions, 1206 flow [2024-06-14 14:21:56,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 106 transitions, 1154 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 14:21:56,536 INFO L231 Difference]: Finished difference. Result has 123 places, 78 transitions, 782 flow [2024-06-14 14:21:56,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=782, PETRI_PLACES=123, PETRI_TRANSITIONS=78} [2024-06-14 14:21:56,537 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-14 14:21:56,537 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 78 transitions, 782 flow [2024-06-14 14:21:56,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:56,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:56,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:56,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 14:21:56,538 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:56,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:56,538 INFO L85 PathProgramCache]: Analyzing trace with hash -499469233, now seen corresponding path program 4 times [2024-06-14 14:21:56,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:56,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683395478] [2024-06-14 14:21:56,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:56,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:56,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:56,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683395478] [2024-06-14 14:21:56,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683395478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:56,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:56,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:56,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731514049] [2024-06-14 14:21:56,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:56,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:56,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:56,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:56,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:56,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:56,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 78 transitions, 782 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:56,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:56,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:56,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:57,054 INFO L124 PetriNetUnfolderBase]: 346/652 cut-off events. [2024-06-14 14:21:57,055 INFO L125 PetriNetUnfolderBase]: For 14321/14325 co-relation queries the response was YES. [2024-06-14 14:21:57,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3760 conditions, 652 events. 346/652 cut-off events. For 14321/14325 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3216 event pairs, 37 based on Foata normal form. 13/665 useless extension candidates. Maximal degree in co-relation 3691. Up to 406 conditions per place. [2024-06-14 14:21:57,060 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 60 selfloop transitions, 21 changer transitions 21/104 dead transitions. [2024-06-14 14:21:57,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 104 transitions, 1134 flow [2024-06-14 14:21:57,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:57,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:57,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-14 14:21:57,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3542319749216301 [2024-06-14 14:21:57,061 INFO L175 Difference]: Start difference. First operand has 123 places, 78 transitions, 782 flow. Second operand 11 states and 113 transitions. [2024-06-14 14:21:57,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 104 transitions, 1134 flow [2024-06-14 14:21:57,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 104 transitions, 1080 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:21:57,085 INFO L231 Difference]: Finished difference. Result has 121 places, 73 transitions, 738 flow [2024-06-14 14:21:57,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=738, PETRI_PLACES=121, PETRI_TRANSITIONS=73} [2024-06-14 14:21:57,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-14 14:21:57,086 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 73 transitions, 738 flow [2024-06-14 14:21:57,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:57,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:57,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:57,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 14:21:57,087 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:57,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:57,087 INFO L85 PathProgramCache]: Analyzing trace with hash 342631717, now seen corresponding path program 5 times [2024-06-14 14:21:57,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:57,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939895441] [2024-06-14 14:21:57,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:57,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:57,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:57,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939895441] [2024-06-14 14:21:57,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939895441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:57,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:57,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:57,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948827321] [2024-06-14 14:21:57,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:57,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:57,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:57,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:57,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:57,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:57,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 73 transitions, 738 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:57,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:57,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:57,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:57,571 INFO L124 PetriNetUnfolderBase]: 329/616 cut-off events. [2024-06-14 14:21:57,571 INFO L125 PetriNetUnfolderBase]: For 12979/12979 co-relation queries the response was YES. [2024-06-14 14:21:57,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 616 events. 329/616 cut-off events. For 12979/12979 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 2980 event pairs, 33 based on Foata normal form. 9/625 useless extension candidates. Maximal degree in co-relation 3543. Up to 377 conditions per place. [2024-06-14 14:21:57,575 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 60 selfloop transitions, 19 changer transitions 18/99 dead transitions. [2024-06-14 14:21:57,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 99 transitions, 1178 flow [2024-06-14 14:21:57,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:57,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:57,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-14 14:21:57,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3542319749216301 [2024-06-14 14:21:57,576 INFO L175 Difference]: Start difference. First operand has 121 places, 73 transitions, 738 flow. Second operand 11 states and 113 transitions. [2024-06-14 14:21:57,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 99 transitions, 1178 flow [2024-06-14 14:21:57,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 99 transitions, 1091 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-14 14:21:57,596 INFO L231 Difference]: Finished difference. Result has 114 places, 70 transitions, 671 flow [2024-06-14 14:21:57,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=671, PETRI_PLACES=114, PETRI_TRANSITIONS=70} [2024-06-14 14:21:57,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-14 14:21:57,597 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 70 transitions, 671 flow [2024-06-14 14:21:57,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:57,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:57,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:57,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 14:21:57,598 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:57,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:57,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1218275177, now seen corresponding path program 6 times [2024-06-14 14:21:57,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:57,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350325097] [2024-06-14 14:21:57,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:57,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:57,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:57,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:57,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350325097] [2024-06-14 14:21:57,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350325097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:57,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:57,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:57,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478907553] [2024-06-14 14:21:57,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:57,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:57,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:57,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:57,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:57,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:57,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 70 transitions, 671 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:57,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:57,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:57,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:58,083 INFO L124 PetriNetUnfolderBase]: 309/580 cut-off events. [2024-06-14 14:21:58,083 INFO L125 PetriNetUnfolderBase]: For 11049/11053 co-relation queries the response was YES. [2024-06-14 14:21:58,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3226 conditions, 580 events. 309/580 cut-off events. For 11049/11053 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2758 event pairs, 33 based on Foata normal form. 13/593 useless extension candidates. Maximal degree in co-relation 3161. Up to 357 conditions per place. [2024-06-14 14:21:58,087 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 58 selfloop transitions, 20 changer transitions 13/93 dead transitions. [2024-06-14 14:21:58,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 93 transitions, 1029 flow [2024-06-14 14:21:58,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:58,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:58,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-14 14:21:58,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-14 14:21:58,088 INFO L175 Difference]: Start difference. First operand has 114 places, 70 transitions, 671 flow. Second operand 11 states and 110 transitions. [2024-06-14 14:21:58,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 93 transitions, 1029 flow [2024-06-14 14:21:58,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 93 transitions, 987 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-14 14:21:58,104 INFO L231 Difference]: Finished difference. Result has 111 places, 68 transitions, 649 flow [2024-06-14 14:21:58,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=649, PETRI_PLACES=111, PETRI_TRANSITIONS=68} [2024-06-14 14:21:58,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-14 14:21:58,104 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 68 transitions, 649 flow [2024-06-14 14:21:58,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:58,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:58,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:58,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 14:21:58,105 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:58,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:58,106 INFO L85 PathProgramCache]: Analyzing trace with hash 427061391, now seen corresponding path program 7 times [2024-06-14 14:21:58,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:58,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605572086] [2024-06-14 14:21:58,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:58,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:58,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:58,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605572086] [2024-06-14 14:21:58,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605572086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:58,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:58,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:58,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129688128] [2024-06-14 14:21:58,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:58,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:58,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:58,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:58,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:58,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:58,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 68 transitions, 649 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:58,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:58,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:58,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:58,556 INFO L124 PetriNetUnfolderBase]: 298/563 cut-off events. [2024-06-14 14:21:58,556 INFO L125 PetriNetUnfolderBase]: For 10716/10720 co-relation queries the response was YES. [2024-06-14 14:21:58,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3080 conditions, 563 events. 298/563 cut-off events. For 10716/10720 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2677 event pairs, 15 based on Foata normal form. 13/576 useless extension candidates. Maximal degree in co-relation 3016. Up to 340 conditions per place. [2024-06-14 14:21:58,560 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 55 selfloop transitions, 17 changer transitions 17/91 dead transitions. [2024-06-14 14:21:58,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 91 transitions, 963 flow [2024-06-14 14:21:58,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:58,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-14 14:21:58,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34169278996865204 [2024-06-14 14:21:58,561 INFO L175 Difference]: Start difference. First operand has 111 places, 68 transitions, 649 flow. Second operand 11 states and 109 transitions. [2024-06-14 14:21:58,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 91 transitions, 963 flow [2024-06-14 14:21:58,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 91 transitions, 919 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:21:58,575 INFO L231 Difference]: Finished difference. Result has 109 places, 64 transitions, 611 flow [2024-06-14 14:21:58,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=611, PETRI_PLACES=109, PETRI_TRANSITIONS=64} [2024-06-14 14:21:58,575 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-14 14:21:58,575 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 64 transitions, 611 flow [2024-06-14 14:21:58,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:58,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:58,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:58,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 14:21:58,576 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:58,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:58,577 INFO L85 PathProgramCache]: Analyzing trace with hash 632792271, now seen corresponding path program 8 times [2024-06-14 14:21:58,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:58,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418777927] [2024-06-14 14:21:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:58,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:58,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:58,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:58,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418777927] [2024-06-14 14:21:58,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418777927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:58,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:58,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:58,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284251189] [2024-06-14 14:21:58,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:58,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:58,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:58,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:58,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:58,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:58,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 64 transitions, 611 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:58,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:58,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:58,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:59,023 INFO L124 PetriNetUnfolderBase]: 285/538 cut-off events. [2024-06-14 14:21:59,024 INFO L125 PetriNetUnfolderBase]: For 9690/9690 co-relation queries the response was YES. [2024-06-14 14:21:59,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2972 conditions, 538 events. 285/538 cut-off events. For 9690/9690 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2508 event pairs, 33 based on Foata normal form. 9/547 useless extension candidates. Maximal degree in co-relation 2909. Up to 319 conditions per place. [2024-06-14 14:21:59,027 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 54 selfloop transitions, 16 changer transitions 18/90 dead transitions. [2024-06-14 14:21:59,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 90 transitions, 941 flow [2024-06-14 14:21:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:59,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 112 transitions. [2024-06-14 14:21:59,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3510971786833856 [2024-06-14 14:21:59,028 INFO L175 Difference]: Start difference. First operand has 109 places, 64 transitions, 611 flow. Second operand 11 states and 112 transitions. [2024-06-14 14:21:59,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 90 transitions, 941 flow [2024-06-14 14:21:59,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 90 transitions, 883 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 14:21:59,044 INFO L231 Difference]: Finished difference. Result has 104 places, 61 transitions, 561 flow [2024-06-14 14:21:59,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=561, PETRI_PLACES=104, PETRI_TRANSITIONS=61} [2024-06-14 14:21:59,045 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-14 14:21:59,045 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 61 transitions, 561 flow [2024-06-14 14:21:59,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:59,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:59,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:59,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 14:21:59,046 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:59,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:59,046 INFO L85 PathProgramCache]: Analyzing trace with hash 625464801, now seen corresponding path program 9 times [2024-06-14 14:21:59,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:59,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792304141] [2024-06-14 14:21:59,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:59,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:59,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:59,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:59,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792304141] [2024-06-14 14:21:59,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792304141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:59,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:59,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:59,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482908114] [2024-06-14 14:21:59,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:59,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:59,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:59,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:59,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:59,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:59,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 61 transitions, 561 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:59,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:59,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:59,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:59,513 INFO L124 PetriNetUnfolderBase]: 265/502 cut-off events. [2024-06-14 14:21:59,513 INFO L125 PetriNetUnfolderBase]: For 8119/8119 co-relation queries the response was YES. [2024-06-14 14:21:59,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2716 conditions, 502 events. 265/502 cut-off events. For 8119/8119 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2303 event pairs, 33 based on Foata normal form. 9/511 useless extension candidates. Maximal degree in co-relation 2655. Up to 299 conditions per place. [2024-06-14 14:21:59,516 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 52 selfloop transitions, 17 changer transitions 13/84 dead transitions. [2024-06-14 14:21:59,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 84 transitions, 893 flow [2024-06-14 14:21:59,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:59,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-14 14:21:59,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34169278996865204 [2024-06-14 14:21:59,517 INFO L175 Difference]: Start difference. First operand has 104 places, 61 transitions, 561 flow. Second operand 11 states and 109 transitions. [2024-06-14 14:21:59,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 84 transitions, 893 flow [2024-06-14 14:21:59,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 84 transitions, 845 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 14:21:59,527 INFO L231 Difference]: Finished difference. Result has 100 places, 59 transitions, 537 flow [2024-06-14 14:21:59,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=537, PETRI_PLACES=100, PETRI_TRANSITIONS=59} [2024-06-14 14:21:59,528 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-14 14:21:59,528 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 59 transitions, 537 flow [2024-06-14 14:21:59,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:59,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:59,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:59,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 14:21:59,529 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:59,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:59,529 INFO L85 PathProgramCache]: Analyzing trace with hash 625469451, now seen corresponding path program 10 times [2024-06-14 14:21:59,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:59,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415645802] [2024-06-14 14:21:59,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:59,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:21:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:21:59,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:21:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415645802] [2024-06-14 14:21:59,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415645802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:21:59,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:21:59,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:21:59,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40585194] [2024-06-14 14:21:59,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:21:59,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:21:59,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:21:59,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:21:59,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:21:59,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:21:59,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 59 transitions, 537 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:59,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:21:59,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:21:59,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:21:59,975 INFO L124 PetriNetUnfolderBase]: 254/485 cut-off events. [2024-06-14 14:21:59,975 INFO L125 PetriNetUnfolderBase]: For 7368/7372 co-relation queries the response was YES. [2024-06-14 14:21:59,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2529 conditions, 485 events. 254/485 cut-off events. For 7368/7372 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2188 event pairs, 15 based on Foata normal form. 13/498 useless extension candidates. Maximal degree in co-relation 2470. Up to 282 conditions per place. [2024-06-14 14:21:59,978 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 45 selfloop transitions, 12 changer transitions 23/82 dead transitions. [2024-06-14 14:21:59,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 82 transitions, 825 flow [2024-06-14 14:21:59,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:21:59,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:21:59,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-14 14:21:59,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385579937304075 [2024-06-14 14:21:59,981 INFO L175 Difference]: Start difference. First operand has 100 places, 59 transitions, 537 flow. Second operand 11 states and 108 transitions. [2024-06-14 14:21:59,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 82 transitions, 825 flow [2024-06-14 14:21:59,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 82 transitions, 787 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:21:59,990 INFO L231 Difference]: Finished difference. Result has 98 places, 53 transitions, 474 flow [2024-06-14 14:21:59,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=474, PETRI_PLACES=98, PETRI_TRANSITIONS=53} [2024-06-14 14:21:59,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-14 14:21:59,991 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 53 transitions, 474 flow [2024-06-14 14:21:59,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:21:59,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:21:59,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:21:59,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 14:21:59,991 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:21:59,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:21:59,992 INFO L85 PathProgramCache]: Analyzing trace with hash 61337465, now seen corresponding path program 11 times [2024-06-14 14:21:59,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:21:59,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846201570] [2024-06-14 14:21:59,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:21:59,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:21:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:22:00,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:22:00,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:22:00,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846201570] [2024-06-14 14:22:00,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846201570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:22:00,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:22:00,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:22:00,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712512397] [2024-06-14 14:22:00,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:22:00,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:22:00,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:22:00,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:22:00,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:22:00,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:22:00,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 53 transitions, 474 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:00,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:22:00,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:22:00,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:22:00,450 INFO L124 PetriNetUnfolderBase]: 236/441 cut-off events. [2024-06-14 14:22:00,450 INFO L125 PetriNetUnfolderBase]: For 6492/6496 co-relation queries the response was YES. [2024-06-14 14:22:00,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2359 conditions, 441 events. 236/441 cut-off events. For 6492/6496 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1945 event pairs, 32 based on Foata normal form. 13/454 useless extension candidates. Maximal degree in co-relation 2301. Up to 261 conditions per place. [2024-06-14 14:22:00,453 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 44 selfloop transitions, 12 changer transitions 18/76 dead transitions. [2024-06-14 14:22:00,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 76 transitions, 760 flow [2024-06-14 14:22:00,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:22:00,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:22:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-14 14:22:00,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.335423197492163 [2024-06-14 14:22:00,454 INFO L175 Difference]: Start difference. First operand has 98 places, 53 transitions, 474 flow. Second operand 11 states and 107 transitions. [2024-06-14 14:22:00,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 76 transitions, 760 flow [2024-06-14 14:22:00,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 76 transitions, 694 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-14 14:22:00,462 INFO L231 Difference]: Finished difference. Result has 87 places, 50 transitions, 410 flow [2024-06-14 14:22:00,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=410, PETRI_PLACES=87, PETRI_TRANSITIONS=50} [2024-06-14 14:22:00,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-14 14:22:00,463 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 50 transitions, 410 flow [2024-06-14 14:22:00,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:00,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:22:00,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:22:00,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 14:22:00,464 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:22:00,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:22:00,464 INFO L85 PathProgramCache]: Analyzing trace with hash 54009995, now seen corresponding path program 12 times [2024-06-14 14:22:00,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:22:00,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931779619] [2024-06-14 14:22:00,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:22:00,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:22:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:22:00,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:22:00,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:22:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931779619] [2024-06-14 14:22:00,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931779619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:22:00,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:22:00,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:22:00,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817209410] [2024-06-14 14:22:00,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:22:00,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:22:00,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:22:00,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:22:00,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:22:00,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:22:00,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 50 transitions, 410 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:00,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:22:00,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:22:00,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:22:00,889 INFO L124 PetriNetUnfolderBase]: 216/407 cut-off events. [2024-06-14 14:22:00,889 INFO L125 PetriNetUnfolderBase]: For 5037/5041 co-relation queries the response was YES. [2024-06-14 14:22:00,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2074 conditions, 407 events. 216/407 cut-off events. For 5037/5041 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1749 event pairs, 32 based on Foata normal form. 13/420 useless extension candidates. Maximal degree in co-relation 2022. Up to 241 conditions per place. [2024-06-14 14:22:00,891 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 42 selfloop transitions, 13 changer transitions 13/70 dead transitions. [2024-06-14 14:22:00,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 70 transitions, 686 flow [2024-06-14 14:22:00,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:22:00,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:22:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-14 14:22:00,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32601880877742945 [2024-06-14 14:22:00,892 INFO L175 Difference]: Start difference. First operand has 87 places, 50 transitions, 410 flow. Second operand 11 states and 104 transitions. [2024-06-14 14:22:00,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 70 transitions, 686 flow [2024-06-14 14:22:00,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 70 transitions, 646 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 14:22:00,899 INFO L231 Difference]: Finished difference. Result has 83 places, 48 transitions, 388 flow [2024-06-14 14:22:00,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=388, PETRI_PLACES=83, PETRI_TRANSITIONS=48} [2024-06-14 14:22:00,899 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 52 predicate places. [2024-06-14 14:22:00,899 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 48 transitions, 388 flow [2024-06-14 14:22:00,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:00,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:22:00,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:22:00,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 14:22:00,900 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:22:00,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:22:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash 54014645, now seen corresponding path program 13 times [2024-06-14 14:22:00,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:22:00,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679342377] [2024-06-14 14:22:00,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:22:00,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:22:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:22:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:22:01,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:22:01,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679342377] [2024-06-14 14:22:01,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679342377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:22:01,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:22:01,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:22:01,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998425064] [2024-06-14 14:22:01,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:22:01,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:22:01,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:22:01,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:22:01,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:22:01,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:22:01,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 48 transitions, 388 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:01,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:22:01,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:22:01,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:22:01,362 INFO L124 PetriNetUnfolderBase]: 205/388 cut-off events. [2024-06-14 14:22:01,362 INFO L125 PetriNetUnfolderBase]: For 4228/4228 co-relation queries the response was YES. [2024-06-14 14:22:01,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 388 events. 205/388 cut-off events. For 4228/4228 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1652 event pairs, 32 based on Foata normal form. 9/397 useless extension candidates. Maximal degree in co-relation 1855. Up to 224 conditions per place. [2024-06-14 14:22:01,364 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 39 selfloop transitions, 10 changer transitions 17/68 dead transitions. [2024-06-14 14:22:01,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 68 transitions, 630 flow [2024-06-14 14:22:01,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:22:01,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:22:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-14 14:22:01,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.322884012539185 [2024-06-14 14:22:01,365 INFO L175 Difference]: Start difference. First operand has 83 places, 48 transitions, 388 flow. Second operand 11 states and 103 transitions. [2024-06-14 14:22:01,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 68 transitions, 630 flow [2024-06-14 14:22:01,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 68 transitions, 600 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:22:01,370 INFO L231 Difference]: Finished difference. Result has 81 places, 44 transitions, 346 flow [2024-06-14 14:22:01,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=346, PETRI_PLACES=81, PETRI_TRANSITIONS=44} [2024-06-14 14:22:01,371 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-14 14:22:01,371 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 44 transitions, 346 flow [2024-06-14 14:22:01,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:01,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:22:01,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:22:01,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 14:22:01,371 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:22:01,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:22:01,372 INFO L85 PathProgramCache]: Analyzing trace with hash -228823089, now seen corresponding path program 14 times [2024-06-14 14:22:01,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:22:01,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813839544] [2024-06-14 14:22:01,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:22:01,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:22:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:22:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:22:01,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:22:01,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813839544] [2024-06-14 14:22:01,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813839544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:22:01,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:22:01,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:22:01,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608309302] [2024-06-14 14:22:01,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:22:01,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:22:01,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:22:01,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:22:01,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:22:01,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:22:01,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 44 transitions, 346 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:01,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:22:01,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:22:01,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:22:01,834 INFO L124 PetriNetUnfolderBase]: 192/361 cut-off events. [2024-06-14 14:22:01,834 INFO L125 PetriNetUnfolderBase]: For 3766/3768 co-relation queries the response was YES. [2024-06-14 14:22:01,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1791 conditions, 361 events. 192/361 cut-off events. For 3766/3768 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1482 event pairs, 28 based on Foata normal form. 11/372 useless extension candidates. Maximal degree in co-relation 1742. Up to 189 conditions per place. [2024-06-14 14:22:01,836 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 36 selfloop transitions, 11 changer transitions 18/67 dead transitions. [2024-06-14 14:22:01,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 67 transitions, 648 flow [2024-06-14 14:22:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:22:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:22:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 14:22:01,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3322884012539185 [2024-06-14 14:22:01,837 INFO L175 Difference]: Start difference. First operand has 81 places, 44 transitions, 346 flow. Second operand 11 states and 106 transitions. [2024-06-14 14:22:01,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 67 transitions, 648 flow [2024-06-14 14:22:01,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 590 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-14 14:22:01,842 INFO L231 Difference]: Finished difference. Result has 75 places, 41 transitions, 304 flow [2024-06-14 14:22:01,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=304, PETRI_PLACES=75, PETRI_TRANSITIONS=41} [2024-06-14 14:22:01,842 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-14 14:22:01,842 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 41 transitions, 304 flow [2024-06-14 14:22:01,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:01,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:22:01,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:22:01,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 14:22:01,843 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:22:01,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:22:01,843 INFO L85 PathProgramCache]: Analyzing trace with hash -226920309, now seen corresponding path program 15 times [2024-06-14 14:22:01,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:22:01,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693356263] [2024-06-14 14:22:01,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:22:01,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:22:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:22:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:22:02,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:22:02,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693356263] [2024-06-14 14:22:02,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693356263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:22:02,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:22:02,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:22:02,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569140721] [2024-06-14 14:22:02,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:22:02,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:22:02,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:22:02,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:22:02,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:22:02,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:22:02,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 41 transitions, 304 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:02,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:22:02,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:22:02,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:22:02,241 INFO L124 PetriNetUnfolderBase]: 172/329 cut-off events. [2024-06-14 14:22:02,241 INFO L125 PetriNetUnfolderBase]: For 2766/2766 co-relation queries the response was YES. [2024-06-14 14:22:02,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1505 conditions, 329 events. 172/329 cut-off events. For 2766/2766 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1303 event pairs, 28 based on Foata normal form. 9/338 useless extension candidates. Maximal degree in co-relation 1459. Up to 169 conditions per place. [2024-06-14 14:22:02,243 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 34 selfloop transitions, 12 changer transitions 13/61 dead transitions. [2024-06-14 14:22:02,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 61 transitions, 542 flow [2024-06-14 14:22:02,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:22:02,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:22:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-14 14:22:02,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.322884012539185 [2024-06-14 14:22:02,244 INFO L175 Difference]: Start difference. First operand has 75 places, 41 transitions, 304 flow. Second operand 11 states and 103 transitions. [2024-06-14 14:22:02,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 61 transitions, 542 flow [2024-06-14 14:22:02,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 61 transitions, 508 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 14:22:02,247 INFO L231 Difference]: Finished difference. Result has 71 places, 39 transitions, 284 flow [2024-06-14 14:22:02,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=284, PETRI_PLACES=71, PETRI_TRANSITIONS=39} [2024-06-14 14:22:02,248 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-14 14:22:02,248 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 39 transitions, 284 flow [2024-06-14 14:22:02,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:02,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:22:02,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:22:02,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 14:22:02,249 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:22:02,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:22:02,249 INFO L85 PathProgramCache]: Analyzing trace with hash -226915659, now seen corresponding path program 16 times [2024-06-14 14:22:02,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:22:02,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140438435] [2024-06-14 14:22:02,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:22:02,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:22:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:22:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:22:02,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:22:02,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140438435] [2024-06-14 14:22:02,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140438435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:22:02,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:22:02,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:22:02,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738665640] [2024-06-14 14:22:02,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:22:02,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:22:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:22:02,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:22:02,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:22:02,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:22:02,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 39 transitions, 284 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:02,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:22:02,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:22:02,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:22:02,759 INFO L124 PetriNetUnfolderBase]: 161/310 cut-off events. [2024-06-14 14:22:02,759 INFO L125 PetriNetUnfolderBase]: For 2279/2279 co-relation queries the response was YES. [2024-06-14 14:22:02,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 310 events. 161/310 cut-off events. For 2279/2279 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1192 event pairs, 10 based on Foata normal form. 9/319 useless extension candidates. Maximal degree in co-relation 1316. Up to 152 conditions per place. [2024-06-14 14:22:02,760 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 30 selfloop transitions, 8 changer transitions 19/59 dead transitions. [2024-06-14 14:22:02,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 59 transitions, 496 flow [2024-06-14 14:22:02,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:22:02,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:22:02,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-14 14:22:02,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31974921630094044 [2024-06-14 14:22:02,761 INFO L175 Difference]: Start difference. First operand has 71 places, 39 transitions, 284 flow. Second operand 11 states and 102 transitions. [2024-06-14 14:22:02,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 59 transitions, 496 flow [2024-06-14 14:22:02,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 59 transitions, 468 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-14 14:22:02,764 INFO L231 Difference]: Finished difference. Result has 69 places, 34 transitions, 241 flow [2024-06-14 14:22:02,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=241, PETRI_PLACES=69, PETRI_TRANSITIONS=34} [2024-06-14 14:22:02,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-06-14 14:22:02,765 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 34 transitions, 241 flow [2024-06-14 14:22:02,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:02,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:22:02,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:22:02,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 14:22:02,765 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:22:02,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:22:02,766 INFO L85 PathProgramCache]: Analyzing trace with hash -820728259, now seen corresponding path program 17 times [2024-06-14 14:22:02,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:22:02,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209007550] [2024-06-14 14:22:02,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:22:02,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:22:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:22:03,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:22:03,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:22:03,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209007550] [2024-06-14 14:22:03,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209007550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:22:03,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:22:03,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:22:03,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001316202] [2024-06-14 14:22:03,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:22:03,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:22:03,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:22:03,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:22:03,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:22:03,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:22:03,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 34 transitions, 241 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:03,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:22:03,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:22:03,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:22:03,121 INFO L124 PetriNetUnfolderBase]: 147/278 cut-off events. [2024-06-14 14:22:03,121 INFO L125 PetriNetUnfolderBase]: For 2080/2088 co-relation queries the response was YES. [2024-06-14 14:22:03,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1242 conditions, 278 events. 147/278 cut-off events. For 2080/2088 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1036 event pairs, 28 based on Foata normal form. 17/295 useless extension candidates. Maximal degree in co-relation 1199. Up to 131 conditions per place. [2024-06-14 14:22:03,123 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 28 selfloop transitions, 9 changer transitions 18/57 dead transitions. [2024-06-14 14:22:03,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 57 transitions, 465 flow [2024-06-14 14:22:03,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:22:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:22:03,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-14 14:22:03,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3322884012539185 [2024-06-14 14:22:03,124 INFO L175 Difference]: Start difference. First operand has 69 places, 34 transitions, 241 flow. Second operand 11 states and 106 transitions. [2024-06-14 14:22:03,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 57 transitions, 465 flow [2024-06-14 14:22:03,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 57 transitions, 414 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-14 14:22:03,126 INFO L231 Difference]: Finished difference. Result has 61 places, 31 transitions, 195 flow [2024-06-14 14:22:03,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=195, PETRI_PLACES=61, PETRI_TRANSITIONS=31} [2024-06-14 14:22:03,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-14 14:22:03,126 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 31 transitions, 195 flow [2024-06-14 14:22:03,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:03,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:22:03,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:22:03,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 14:22:03,127 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:22:03,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:22:03,127 INFO L85 PathProgramCache]: Analyzing trace with hash -828051079, now seen corresponding path program 18 times [2024-06-14 14:22:03,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:22:03,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525905421] [2024-06-14 14:22:03,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:22:03,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:22:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:22:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:22:03,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:22:03,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525905421] [2024-06-14 14:22:03,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525905421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:22:03,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:22:03,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:22:03,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025745202] [2024-06-14 14:22:03,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:22:03,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:22:03,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:22:03,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:22:03,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:22:03,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:22:03,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 31 transitions, 195 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:03,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:22:03,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:22:03,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:22:03,537 INFO L124 PetriNetUnfolderBase]: 127/246 cut-off events. [2024-06-14 14:22:03,539 INFO L125 PetriNetUnfolderBase]: For 1313/1313 co-relation queries the response was YES. [2024-06-14 14:22:03,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 246 events. 127/246 cut-off events. For 1313/1313 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 881 event pairs, 28 based on Foata normal form. 9/255 useless extension candidates. Maximal degree in co-relation 953. Up to 111 conditions per place. [2024-06-14 14:22:03,542 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 26 selfloop transitions, 10 changer transitions 13/51 dead transitions. [2024-06-14 14:22:03,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 51 transitions, 379 flow [2024-06-14 14:22:03,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:22:03,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:22:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-14 14:22:03,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.322884012539185 [2024-06-14 14:22:03,543 INFO L175 Difference]: Start difference. First operand has 61 places, 31 transitions, 195 flow. Second operand 11 states and 103 transitions. [2024-06-14 14:22:03,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 51 transitions, 379 flow [2024-06-14 14:22:03,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 51 transitions, 346 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 14:22:03,546 INFO L231 Difference]: Finished difference. Result has 56 places, 29 transitions, 175 flow [2024-06-14 14:22:03,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=175, PETRI_PLACES=56, PETRI_TRANSITIONS=29} [2024-06-14 14:22:03,547 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-14 14:22:03,547 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 29 transitions, 175 flow [2024-06-14 14:22:03,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:03,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:22:03,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:22:03,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 14:22:03,547 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:22:03,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:22:03,548 INFO L85 PathProgramCache]: Analyzing trace with hash -828055729, now seen corresponding path program 19 times [2024-06-14 14:22:03,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:22:03,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000225160] [2024-06-14 14:22:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:22:03,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:22:03,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:22:03,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:22:03,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:22:03,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000225160] [2024-06-14 14:22:03,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000225160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:22:03,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:22:03,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:22:03,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329006790] [2024-06-14 14:22:03,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:22:03,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:22:03,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:22:03,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:22:03,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:22:03,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:22:03,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 29 transitions, 175 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:03,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:22:03,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:22:03,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:22:03,956 INFO L124 PetriNetUnfolderBase]: 116/229 cut-off events. [2024-06-14 14:22:03,956 INFO L125 PetriNetUnfolderBase]: For 984/984 co-relation queries the response was YES. [2024-06-14 14:22:03,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 229 events. 116/229 cut-off events. For 984/984 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 802 event pairs, 10 based on Foata normal form. 9/238 useless extension candidates. Maximal degree in co-relation 852. Up to 94 conditions per place. [2024-06-14 14:22:03,957 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 23 selfloop transitions, 7 changer transitions 17/49 dead transitions. [2024-06-14 14:22:03,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 49 transitions, 361 flow [2024-06-14 14:22:03,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:22:03,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:22:03,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-06-14 14:22:03,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31974921630094044 [2024-06-14 14:22:03,958 INFO L175 Difference]: Start difference. First operand has 56 places, 29 transitions, 175 flow. Second operand 11 states and 102 transitions. [2024-06-14 14:22:03,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 49 transitions, 361 flow [2024-06-14 14:22:03,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 331 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 14:22:03,960 INFO L231 Difference]: Finished difference. Result has 54 places, 25 transitions, 140 flow [2024-06-14 14:22:03,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=140, PETRI_PLACES=54, PETRI_TRANSITIONS=25} [2024-06-14 14:22:03,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 23 predicate places. [2024-06-14 14:22:03,960 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 25 transitions, 140 flow [2024-06-14 14:22:03,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:03,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:22:03,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:22:03,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 14:22:03,961 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 14:22:03,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:22:03,961 INFO L85 PathProgramCache]: Analyzing trace with hash -571377589, now seen corresponding path program 20 times [2024-06-14 14:22:03,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:22:03,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512163519] [2024-06-14 14:22:03,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:22:03,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:22:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:22:04,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:22:04,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:22:04,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512163519] [2024-06-14 14:22:04,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512163519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:22:04,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:22:04,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 14:22:04,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911635462] [2024-06-14 14:22:04,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:22:04,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 14:22:04,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:22:04,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 14:22:04,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-14 14:22:04,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-14 14:22:04,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 25 transitions, 140 flow. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:04,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:22:04,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-14 14:22:04,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:22:04,283 INFO L124 PetriNetUnfolderBase]: 58/124 cut-off events. [2024-06-14 14:22:04,284 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2024-06-14 14:22:04,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 124 events. 58/124 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 313 event pairs, 0 based on Foata normal form. 9/133 useless extension candidates. Maximal degree in co-relation 410. Up to 51 conditions per place. [2024-06-14 14:22:04,284 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 0 selfloop transitions, 0 changer transitions 39/39 dead transitions. [2024-06-14 14:22:04,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 39 transitions, 250 flow [2024-06-14 14:22:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 14:22:04,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 14:22:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 93 transitions. [2024-06-14 14:22:04,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29153605015673983 [2024-06-14 14:22:04,285 INFO L175 Difference]: Start difference. First operand has 54 places, 25 transitions, 140 flow. Second operand 11 states and 93 transitions. [2024-06-14 14:22:04,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 39 transitions, 250 flow [2024-06-14 14:22:04,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 222 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 14:22:04,286 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-06-14 14:22:04,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-06-14 14:22:04,286 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-14 14:22:04,286 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-06-14 14:22:04,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:22:04,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 14:22:04,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 14:22:04,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 14:22:04,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 14:22:04,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 14:22:04,290 INFO L445 BasicCegarLoop]: Path program histogram: [20, 10, 10, 6, 1, 1, 1, 1, 1] [2024-06-14 14:22:04,293 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 14:22:04,293 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 14:22:04,296 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 14:22:04,296 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 14:22:04,302 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 02:22:04 BasicIcfg [2024-06-14 14:22:04,302 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 14:22:04,302 INFO L158 Benchmark]: Toolchain (without parser) took 25030.43ms. Allocated memory was 205.5MB in the beginning and 505.4MB in the end (delta: 299.9MB). Free memory was 176.6MB in the beginning and 292.1MB in the end (delta: -115.5MB). Peak memory consumption was 184.8MB. Max. memory is 16.1GB. [2024-06-14 14:22:04,303 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 132.1MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:22:04,303 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 132.1MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 14:22:04,303 INFO L158 Benchmark]: CACSL2BoogieTranslator took 438.55ms. Allocated memory is still 205.5MB. Free memory was 176.0MB in the beginning and 149.7MB in the end (delta: 26.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-06-14 14:22:04,303 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.38ms. Allocated memory is still 205.5MB. Free memory was 149.7MB in the beginning and 147.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 14:22:04,307 INFO L158 Benchmark]: Boogie Preprocessor took 61.05ms. Allocated memory is still 205.5MB. Free memory was 147.7MB in the beginning and 145.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 14:22:04,308 INFO L158 Benchmark]: RCFGBuilder took 498.64ms. Allocated memory is still 205.5MB. Free memory was 145.6MB in the beginning and 118.3MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-06-14 14:22:04,308 INFO L158 Benchmark]: TraceAbstraction took 23966.03ms. Allocated memory was 205.5MB in the beginning and 505.4MB in the end (delta: 299.9MB). Free memory was 117.2MB in the beginning and 292.1MB in the end (delta: -174.9MB). Peak memory consumption was 126.1MB. Max. memory is 16.1GB. [2024-06-14 14:22:04,309 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.17ms. Allocated memory is still 132.1MB. Free memory is still 85.8MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 132.1MB. Free memory is still 103.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 438.55ms. Allocated memory is still 205.5MB. Free memory was 176.0MB in the beginning and 149.7MB in the end (delta: 26.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.38ms. Allocated memory is still 205.5MB. Free memory was 149.7MB in the beginning and 147.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.05ms. Allocated memory is still 205.5MB. Free memory was 147.7MB in the beginning and 145.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 498.64ms. Allocated memory is still 205.5MB. Free memory was 145.6MB in the beginning and 118.3MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 23966.03ms. Allocated memory was 205.5MB in the beginning and 505.4MB in the end (delta: 299.9MB). Free memory was 117.2MB in the beginning and 292.1MB in the end (delta: -174.9MB). Peak memory consumption was 126.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 721]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 722]: 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, 39 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: 23.9s, OverallIterations: 51, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 10.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3402 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2968 mSDsluCounter, 574 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 473 mSDsCounter, 463 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15731 IncrementalHoareTripleChecker+Invalid, 16194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 463 mSolverCounterUnsat, 101 mSDtfsCounter, 15731 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 407 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 407 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=989occurred in iteration=29, InterpolantAutomatonStates: 509, 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, 0.2s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 902 NumberOfCodeBlocks, 902 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 851 ConstructedInterpolants, 0 QuantifiedInterpolants, 17729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 51 InterpolantComputations, 51 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-14 14:22:04,330 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