./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/test-easy6.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/test-easy6.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:47:10,851 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:47:10,915 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:47:10,922 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:47:10,922 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:47:10,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:47:10,947 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:47:10,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:47:10,948 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:47:10,951 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:47:10,951 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:47:10,952 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:47:10,952 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:47:10,953 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:47:10,954 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:47:10,954 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:47:10,954 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:47:10,954 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:47:10,955 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:47:10,955 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:47:10,955 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:47:10,955 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:47:10,956 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:47:10,956 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:47:10,956 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:47:10,956 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:47:10,956 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:47:10,957 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:47:10,957 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:47:10,957 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:47:10,958 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:47:10,958 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:47:10,958 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:47:10,959 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:47:10,959 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:47:10,959 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:47:10,959 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:47:10,959 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:47:10,959 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:47:10,960 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:47:10,960 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:47:10,960 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:47:10,960 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:47:10,961 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:47:11,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:47:11,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:47:11,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:47:11,185 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:47:11,186 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:47:11,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2024-06-28 02:47:12,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:47:12,335 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:47:12,336 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2024-06-28 02:47:12,342 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5359f36c/418075c726e84b4d99debff3cdaf117f/FLAG5c2dd8abc [2024-06-28 02:47:12,354 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5359f36c/418075c726e84b4d99debff3cdaf117f [2024-06-28 02:47:12,356 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:47:12,357 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:47:12,357 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/test-easy6.wvr.yml/witness.yml [2024-06-28 02:47:12,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:47:12,464 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:47:12,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:47:12,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:47:12,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:47:12,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:47:12" (1/2) ... [2024-06-28 02:47:12,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b029220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:12, skipping insertion in model container [2024-06-28 02:47:12,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:47:12" (1/2) ... [2024-06-28 02:47:12,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@338f7e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:47:12, skipping insertion in model container [2024-06-28 02:47:12,472 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:47:12" (2/2) ... [2024-06-28 02:47:12,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b029220 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12, skipping insertion in model container [2024-06-28 02:47:12,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:47:12" (2/2) ... [2024-06-28 02:47:12,473 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:47:12,492 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:47:12,493 INFO L97 edCorrectnessWitness]: Location invariant before [L111-L111] (((((((! multithreaded || 0 <= i2) && (! multithreaded || 0 <= n2)) && (! multithreaded || 0 <= tmp2)) && (! multithreaded || 0 <= i)) && (! multithreaded || 0 <= n1)) && (! multithreaded || 0 <= i1)) && (! multithreaded || ((((((0 <= n1 && 0 <= n2) && 0 <= tmp1) && 0 <= tmp2) && 0 <= i) && 0 <= i1) && 0 <= i2))) && (! multithreaded || 0 <= tmp1) [2024-06-28 02:47:12,494 INFO L97 edCorrectnessWitness]: Location invariant before [L112-L112] (((((((! multithreaded || 0 <= i2) && (! multithreaded || 0 <= n2)) && (! multithreaded || 0 <= tmp2)) && (! multithreaded || 0 <= i)) && (! multithreaded || 0 <= n1)) && (! multithreaded || 0 <= i1)) && (! multithreaded || ((((((0 <= n1 && 0 <= n2) && 0 <= tmp1) && 0 <= tmp2) && 0 <= i) && 0 <= i1) && 0 <= i2))) && (! multithreaded || 0 <= tmp1) [2024-06-28 02:47:12,494 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:47:12,494 INFO L106 edCorrectnessWitness]: ghost_update [L110-L110] multithreaded = 1; [2024-06-28 02:47:12,509 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:47:12,676 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:47:12,685 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:47:12,796 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:47:12,811 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:47:12,813 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12 WrapperNode [2024-06-28 02:47:12,813 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:47:12,814 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:47:12,814 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:47:12,814 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:47:12,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12" (1/1) ... [2024-06-28 02:47:12,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12" (1/1) ... [2024-06-28 02:47:12,857 INFO L138 Inliner]: procedures = 20, calls = 50, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 119 [2024-06-28 02:47:12,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:47:12,858 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:47:12,858 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:47:12,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:47:12,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12" (1/1) ... [2024-06-28 02:47:12,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12" (1/1) ... [2024-06-28 02:47:12,874 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12" (1/1) ... [2024-06-28 02:47:12,890 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]. [2024-06-28 02:47:12,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12" (1/1) ... [2024-06-28 02:47:12,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12" (1/1) ... [2024-06-28 02:47:12,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12" (1/1) ... [2024-06-28 02:47:12,897 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12" (1/1) ... [2024-06-28 02:47:12,902 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12" (1/1) ... [2024-06-28 02:47:12,902 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12" (1/1) ... [2024-06-28 02:47:12,904 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:47:12,904 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:47:12,904 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:47:12,904 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:47:12,905 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12" (1/1) ... [2024-06-28 02:47:12,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:47:12,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:47:12,929 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) [2024-06-28 02:47:12,947 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 [2024-06-28 02:47:12,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:47:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-28 02:47:12,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-28 02:47:12,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-28 02:47:12,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-28 02:47:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:47:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:47:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:47:12,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:47:12,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:47:12,967 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:47:13,058 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:47:13,060 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:47:13,221 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:47:13,221 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:47:13,299 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:47:13,299 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:47:13,300 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:47:13 BoogieIcfgContainer [2024-06-28 02:47:13,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:47:13,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:47:13,302 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:47:13,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:47:13,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:47:12" (1/4) ... [2024-06-28 02:47:13,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e11193f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:47:13, skipping insertion in model container [2024-06-28 02:47:13,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:47:12" (2/4) ... [2024-06-28 02:47:13,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e11193f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:47:13, skipping insertion in model container [2024-06-28 02:47:13,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:47:12" (3/4) ... [2024-06-28 02:47:13,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e11193f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:47:13, skipping insertion in model container [2024-06-28 02:47:13,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:47:13" (4/4) ... [2024-06-28 02:47:13,306 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2024-06-28 02:47:13,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:47:13,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 02:47:13,319 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:47:13,350 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-28 02:47:13,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 37 transitions, 88 flow [2024-06-28 02:47:13,392 INFO L124 PetriNetUnfolderBase]: 0/35 cut-off events. [2024-06-28 02:47:13,392 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-28 02:47:13,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 0/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-28 02:47:13,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 37 transitions, 88 flow [2024-06-28 02:47:13,396 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 31 transitions, 68 flow [2024-06-28 02:47:13,403 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:47:13,407 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;@cef4a48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:47:13,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 02:47:13,412 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:47:13,412 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 02:47:13,412 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:47:13,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:13,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:47:13,413 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)] === [2024-06-28 02:47:13,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:13,417 INFO L85 PathProgramCache]: Analyzing trace with hash 249430839, now seen corresponding path program 1 times [2024-06-28 02:47:13,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:13,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910271308] [2024-06-28 02:47:13,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:13,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:13,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:13,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:13,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910271308] [2024-06-28 02:47:13,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910271308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:13,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:13,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:47:13,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690528521] [2024-06-28 02:47:13,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:13,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:47:13,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:13,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:47:13,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:47:13,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-28 02:47:13,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:13,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:13,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-28 02:47:13,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:13,926 INFO L124 PetriNetUnfolderBase]: 157/370 cut-off events. [2024-06-28 02:47:13,926 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-28 02:47:13,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677 conditions, 370 events. 157/370 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1745 event pairs, 65 based on Foata normal form. 3/355 useless extension candidates. Maximal degree in co-relation 666. Up to 276 conditions per place. [2024-06-28 02:47:13,932 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 23 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2024-06-28 02:47:13,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 139 flow [2024-06-28 02:47:13,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:47:13,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:47:13,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-28 02:47:13,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6846846846846847 [2024-06-28 02:47:13,942 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 68 flow. Second operand 3 states and 76 transitions. [2024-06-28 02:47:13,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 139 flow [2024-06-28 02:47:13,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 39 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:47:13,945 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 87 flow [2024-06-28 02:47:13,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2024-06-28 02:47:13,949 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2024-06-28 02:47:13,949 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 87 flow [2024-06-28 02:47:13,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:13,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:13,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:13,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:47:13,950 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)] === [2024-06-28 02:47:13,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:13,951 INFO L85 PathProgramCache]: Analyzing trace with hash 514390033, now seen corresponding path program 1 times [2024-06-28 02:47:13,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:13,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682649332] [2024-06-28 02:47:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:13,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:14,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:14,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682649332] [2024-06-28 02:47:14,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682649332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:14,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:14,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:47:14,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569060970] [2024-06-28 02:47:14,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:14,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:47:14,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:14,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:47:14,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:47:14,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-28 02:47:14,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:14,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:14,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-28 02:47:14,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:14,189 INFO L124 PetriNetUnfolderBase]: 150/356 cut-off events. [2024-06-28 02:47:14,190 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-06-28 02:47:14,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 356 events. 150/356 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1674 event pairs, 64 based on Foata normal form. 4/343 useless extension candidates. Maximal degree in co-relation 720. Up to 246 conditions per place. [2024-06-28 02:47:14,195 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 24 selfloop transitions, 4 changer transitions 0/41 dead transitions. [2024-06-28 02:47:14,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 41 transitions, 163 flow [2024-06-28 02:47:14,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:47:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:47:14,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-28 02:47:14,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6936936936936937 [2024-06-28 02:47:14,198 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 87 flow. Second operand 3 states and 77 transitions. [2024-06-28 02:47:14,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 41 transitions, 163 flow [2024-06-28 02:47:14,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 41 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:47:14,202 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 110 flow [2024-06-28 02:47:14,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-06-28 02:47:14,202 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2024-06-28 02:47:14,203 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 110 flow [2024-06-28 02:47:14,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:14,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:14,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:14,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:47:14,204 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)] === [2024-06-28 02:47:14,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:14,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1233316041, now seen corresponding path program 1 times [2024-06-28 02:47:14,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:14,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993463400] [2024-06-28 02:47:14,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:14,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:14,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:14,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993463400] [2024-06-28 02:47:14,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993463400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:14,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:14,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:47:14,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2910478] [2024-06-28 02:47:14,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:14,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:47:14,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:14,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:47:14,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:47:14,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-28 02:47:14,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:14,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:14,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-28 02:47:14,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:14,510 INFO L124 PetriNetUnfolderBase]: 227/487 cut-off events. [2024-06-28 02:47:14,510 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-06-28 02:47:14,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 487 events. 227/487 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2259 event pairs, 87 based on Foata normal form. 15/491 useless extension candidates. Maximal degree in co-relation 1089. Up to 326 conditions per place. [2024-06-28 02:47:14,513 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 37 selfloop transitions, 5 changer transitions 0/53 dead transitions. [2024-06-28 02:47:14,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 53 transitions, 243 flow [2024-06-28 02:47:14,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:47:14,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:47:14,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-28 02:47:14,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-06-28 02:47:14,517 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 110 flow. Second operand 4 states and 96 transitions. [2024-06-28 02:47:14,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 53 transitions, 243 flow [2024-06-28 02:47:14,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:47:14,521 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 148 flow [2024-06-28 02:47:14,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-06-28 02:47:14,522 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2024-06-28 02:47:14,522 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 148 flow [2024-06-28 02:47:14,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:14,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:14,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:14,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:47:14,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:14,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:14,523 INFO L85 PathProgramCache]: Analyzing trace with hash 2025472437, now seen corresponding path program 1 times [2024-06-28 02:47:14,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:14,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950510238] [2024-06-28 02:47:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:14,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:14,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:14,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950510238] [2024-06-28 02:47:14,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950510238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:14,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:14,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:47:14,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441525121] [2024-06-28 02:47:14,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:14,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:47:14,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:14,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:47:14,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:47:14,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2024-06-28 02:47:14,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:14,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:14,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2024-06-28 02:47:14,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:14,849 INFO L124 PetriNetUnfolderBase]: 291/598 cut-off events. [2024-06-28 02:47:14,853 INFO L125 PetriNetUnfolderBase]: For 488/491 co-relation queries the response was YES. [2024-06-28 02:47:14,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1529 conditions, 598 events. 291/598 cut-off events. For 488/491 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2873 event pairs, 90 based on Foata normal form. 12/593 useless extension candidates. Maximal degree in co-relation 1512. Up to 327 conditions per place. [2024-06-28 02:47:14,856 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 46 selfloop transitions, 9 changer transitions 0/65 dead transitions. [2024-06-28 02:47:14,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 65 transitions, 338 flow [2024-06-28 02:47:14,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:47:14,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:47:14,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-28 02:47:14,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6324324324324324 [2024-06-28 02:47:14,859 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 148 flow. Second operand 5 states and 117 transitions. [2024-06-28 02:47:14,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 65 transitions, 338 flow [2024-06-28 02:47:14,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 330 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 02:47:14,863 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 199 flow [2024-06-28 02:47:14,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-28 02:47:14,864 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 12 predicate places. [2024-06-28 02:47:14,865 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 199 flow [2024-06-28 02:47:14,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:14,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:14,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:14,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:47:14,865 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)] === [2024-06-28 02:47:14,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:14,866 INFO L85 PathProgramCache]: Analyzing trace with hash 933798145, now seen corresponding path program 1 times [2024-06-28 02:47:14,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:14,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007343693] [2024-06-28 02:47:14,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:14,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:15,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:15,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007343693] [2024-06-28 02:47:15,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007343693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:15,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:15,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:47:15,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315372378] [2024-06-28 02:47:15,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:15,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:47:15,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:15,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:47:15,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:47:15,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 02:47:15,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 199 flow. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:15,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:15,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 02:47:15,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:15,223 INFO L124 PetriNetUnfolderBase]: 282/596 cut-off events. [2024-06-28 02:47:15,224 INFO L125 PetriNetUnfolderBase]: For 824/830 co-relation queries the response was YES. [2024-06-28 02:47:15,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1611 conditions, 596 events. 282/596 cut-off events. For 824/830 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2878 event pairs, 80 based on Foata normal form. 16/602 useless extension candidates. Maximal degree in co-relation 1590. Up to 380 conditions per place. [2024-06-28 02:47:15,227 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 44 selfloop transitions, 10 changer transitions 0/63 dead transitions. [2024-06-28 02:47:15,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 370 flow [2024-06-28 02:47:15,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:47:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:47:15,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-06-28 02:47:15,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459459459459459 [2024-06-28 02:47:15,228 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 199 flow. Second operand 5 states and 101 transitions. [2024-06-28 02:47:15,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 370 flow [2024-06-28 02:47:15,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 360 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 02:47:15,231 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 252 flow [2024-06-28 02:47:15,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2024-06-28 02:47:15,231 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 16 predicate places. [2024-06-28 02:47:15,231 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 252 flow [2024-06-28 02:47:15,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:15,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:15,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:15,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:47:15,232 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:15,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:15,233 INFO L85 PathProgramCache]: Analyzing trace with hash 858858740, now seen corresponding path program 1 times [2024-06-28 02:47:15,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:15,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385330365] [2024-06-28 02:47:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:15,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:15,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:15,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:15,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385330365] [2024-06-28 02:47:15,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385330365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:15,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:15,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:47:15,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567250557] [2024-06-28 02:47:15,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:15,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:47:15,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:15,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:47:15,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:47:15,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 02:47:15,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:15,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:15,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 02:47:15,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:15,532 INFO L124 PetriNetUnfolderBase]: 323/648 cut-off events. [2024-06-28 02:47:15,532 INFO L125 PetriNetUnfolderBase]: For 1325/1334 co-relation queries the response was YES. [2024-06-28 02:47:15,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1910 conditions, 648 events. 323/648 cut-off events. For 1325/1334 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3070 event pairs, 115 based on Foata normal form. 12/645 useless extension candidates. Maximal degree in co-relation 1886. Up to 475 conditions per place. [2024-06-28 02:47:15,535 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 48 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2024-06-28 02:47:15,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 418 flow [2024-06-28 02:47:15,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:47:15,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:47:15,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-06-28 02:47:15,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2024-06-28 02:47:15,536 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 252 flow. Second operand 5 states and 105 transitions. [2024-06-28 02:47:15,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 418 flow [2024-06-28 02:47:15,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 396 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:47:15,540 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 282 flow [2024-06-28 02:47:15,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2024-06-28 02:47:15,542 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 19 predicate places. [2024-06-28 02:47:15,542 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 282 flow [2024-06-28 02:47:15,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:15,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:15,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:15,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:47:15,543 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)] === [2024-06-28 02:47:15,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:15,543 INFO L85 PathProgramCache]: Analyzing trace with hash -216928050, now seen corresponding path program 1 times [2024-06-28 02:47:15,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:15,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977403402] [2024-06-28 02:47:15,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:15,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:15,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:15,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977403402] [2024-06-28 02:47:15,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977403402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:15,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:15,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:47:15,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040148633] [2024-06-28 02:47:15,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:15,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:47:15,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:15,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:47:15,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:47:15,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 02:47:15,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:15,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:15,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 02:47:15,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:15,766 INFO L124 PetriNetUnfolderBase]: 332/666 cut-off events. [2024-06-28 02:47:15,766 INFO L125 PetriNetUnfolderBase]: For 1501/1501 co-relation queries the response was YES. [2024-06-28 02:47:15,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2048 conditions, 666 events. 332/666 cut-off events. For 1501/1501 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3162 event pairs, 156 based on Foata normal form. 2/665 useless extension candidates. Maximal degree in co-relation 2022. Up to 554 conditions per place. [2024-06-28 02:47:15,770 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 46 selfloop transitions, 8 changer transitions 0/66 dead transitions. [2024-06-28 02:47:15,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 448 flow [2024-06-28 02:47:15,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:47:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:47:15,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-06-28 02:47:15,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5351351351351351 [2024-06-28 02:47:15,772 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 282 flow. Second operand 5 states and 99 transitions. [2024-06-28 02:47:15,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 448 flow [2024-06-28 02:47:15,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 427 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 02:47:15,775 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 304 flow [2024-06-28 02:47:15,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-06-28 02:47:15,776 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 24 predicate places. [2024-06-28 02:47:15,776 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 304 flow [2024-06-28 02:47:15,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:15,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:15,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:15,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:47:15,777 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)] === [2024-06-28 02:47:15,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:15,777 INFO L85 PathProgramCache]: Analyzing trace with hash 307924739, now seen corresponding path program 1 times [2024-06-28 02:47:15,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:15,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993507372] [2024-06-28 02:47:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:15,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:15,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:15,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993507372] [2024-06-28 02:47:15,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993507372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:15,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:15,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:47:15,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084864392] [2024-06-28 02:47:15,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:15,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:47:15,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:15,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:47:15,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:47:15,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 02:47:15,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:15,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:15,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 02:47:15,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:16,057 INFO L124 PetriNetUnfolderBase]: 382/736 cut-off events. [2024-06-28 02:47:16,057 INFO L125 PetriNetUnfolderBase]: For 2074/2074 co-relation queries the response was YES. [2024-06-28 02:47:16,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 736 events. 382/736 cut-off events. For 2074/2074 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3383 event pairs, 190 based on Foata normal form. 4/737 useless extension candidates. Maximal degree in co-relation 2374. Up to 638 conditions per place. [2024-06-28 02:47:16,062 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 49 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2024-06-28 02:47:16,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 67 transitions, 460 flow [2024-06-28 02:47:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:47:16,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:47:16,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-06-28 02:47:16,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-06-28 02:47:16,064 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 304 flow. Second operand 5 states and 95 transitions. [2024-06-28 02:47:16,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 67 transitions, 460 flow [2024-06-28 02:47:16,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 67 transitions, 450 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 02:47:16,068 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 336 flow [2024-06-28 02:47:16,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2024-06-28 02:47:16,070 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 29 predicate places. [2024-06-28 02:47:16,070 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 336 flow [2024-06-28 02:47:16,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:16,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:16,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:16,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:47:16,071 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)] === [2024-06-28 02:47:16,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:16,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1906433551, now seen corresponding path program 1 times [2024-06-28 02:47:16,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:16,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007418985] [2024-06-28 02:47:16,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:16,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:16,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:16,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007418985] [2024-06-28 02:47:16,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007418985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:16,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:16,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:47:16,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60367484] [2024-06-28 02:47:16,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:16,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:47:16,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:16,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:47:16,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:47:16,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 37 [2024-06-28 02:47:16,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:16,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:16,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 37 [2024-06-28 02:47:16,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:16,150 INFO L124 PetriNetUnfolderBase]: 155/410 cut-off events. [2024-06-28 02:47:16,150 INFO L125 PetriNetUnfolderBase]: For 792/815 co-relation queries the response was YES. [2024-06-28 02:47:16,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1179 conditions, 410 events. 155/410 cut-off events. For 792/815 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2174 event pairs, 103 based on Foata normal form. 11/407 useless extension candidates. Maximal degree in co-relation 1147. Up to 201 conditions per place. [2024-06-28 02:47:16,153 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 15 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-06-28 02:47:16,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 376 flow [2024-06-28 02:47:16,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:47:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:47:16,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-28 02:47:16,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-06-28 02:47:16,154 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 336 flow. Second operand 3 states and 78 transitions. [2024-06-28 02:47:16,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 376 flow [2024-06-28 02:47:16,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 60 transitions, 368 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 02:47:16,157 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 336 flow [2024-06-28 02:47:16,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-06-28 02:47:16,158 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2024-06-28 02:47:16,158 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 336 flow [2024-06-28 02:47:16,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:16,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:16,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:16,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:47:16,159 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)] === [2024-06-28 02:47:16,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:16,160 INFO L85 PathProgramCache]: Analyzing trace with hash -693832306, now seen corresponding path program 1 times [2024-06-28 02:47:16,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:16,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661947082] [2024-06-28 02:47:16,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:16,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:16,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:16,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:16,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661947082] [2024-06-28 02:47:16,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661947082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:16,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:16,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:47:16,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496558536] [2024-06-28 02:47:16,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:16,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:47:16,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:16,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:47:16,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:47:16,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 37 [2024-06-28 02:47:16,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:16,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:16,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 37 [2024-06-28 02:47:16,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:16,235 INFO L124 PetriNetUnfolderBase]: 158/439 cut-off events. [2024-06-28 02:47:16,235 INFO L125 PetriNetUnfolderBase]: For 898/915 co-relation queries the response was YES. [2024-06-28 02:47:16,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1307 conditions, 439 events. 158/439 cut-off events. For 898/915 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2299 event pairs, 100 based on Foata normal form. 6/428 useless extension candidates. Maximal degree in co-relation 1274. Up to 196 conditions per place. [2024-06-28 02:47:16,238 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 18 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-06-28 02:47:16,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 390 flow [2024-06-28 02:47:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:47:16,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:47:16,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-06-28 02:47:16,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7297297297297297 [2024-06-28 02:47:16,239 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 336 flow. Second operand 3 states and 81 transitions. [2024-06-28 02:47:16,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 390 flow [2024-06-28 02:47:16,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 386 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:47:16,243 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 340 flow [2024-06-28 02:47:16,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2024-06-28 02:47:16,245 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2024-06-28 02:47:16,246 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 340 flow [2024-06-28 02:47:16,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:16,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:16,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:16,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:47:16,247 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)] === [2024-06-28 02:47:16,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:16,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1720795868, now seen corresponding path program 2 times [2024-06-28 02:47:16,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:16,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681742312] [2024-06-28 02:47:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:16,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:16,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:16,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681742312] [2024-06-28 02:47:16,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681742312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:16,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:16,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:47:16,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294337034] [2024-06-28 02:47:16,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:16,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:47:16,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:16,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:47:16,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:47:16,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 02:47:16,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:16,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:16,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 02:47:16,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:16,502 INFO L124 PetriNetUnfolderBase]: 350/716 cut-off events. [2024-06-28 02:47:16,503 INFO L125 PetriNetUnfolderBase]: For 2474/2483 co-relation queries the response was YES. [2024-06-28 02:47:16,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 716 events. 350/716 cut-off events. For 2474/2483 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3330 event pairs, 141 based on Foata normal form. 8/713 useless extension candidates. Maximal degree in co-relation 2473. Up to 569 conditions per place. [2024-06-28 02:47:16,506 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 51 selfloop transitions, 16 changer transitions 0/79 dead transitions. [2024-06-28 02:47:16,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 79 transitions, 586 flow [2024-06-28 02:47:16,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:47:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:47:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 02:47:16,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545045045045045 [2024-06-28 02:47:16,508 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 340 flow. Second operand 6 states and 121 transitions. [2024-06-28 02:47:16,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 79 transitions, 586 flow [2024-06-28 02:47:16,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 79 transitions, 582 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:47:16,511 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 440 flow [2024-06-28 02:47:16,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=440, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-06-28 02:47:16,512 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 38 predicate places. [2024-06-28 02:47:16,512 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 440 flow [2024-06-28 02:47:16,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:16,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:16,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:16,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:47:16,513 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)] === [2024-06-28 02:47:16,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:16,513 INFO L85 PathProgramCache]: Analyzing trace with hash 955148898, now seen corresponding path program 3 times [2024-06-28 02:47:16,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:16,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656562929] [2024-06-28 02:47:16,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:16,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:16,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:16,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:16,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656562929] [2024-06-28 02:47:16,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656562929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:16,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:16,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:47:16,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668144860] [2024-06-28 02:47:16,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:16,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:47:16,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:16,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:47:16,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:47:16,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 02:47:16,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 440 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:16,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:16,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 02:47:16,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:16,738 INFO L124 PetriNetUnfolderBase]: 344/708 cut-off events. [2024-06-28 02:47:16,738 INFO L125 PetriNetUnfolderBase]: For 3039/3048 co-relation queries the response was YES. [2024-06-28 02:47:16,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 708 events. 344/708 cut-off events. For 3039/3048 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3304 event pairs, 148 based on Foata normal form. 8/705 useless extension candidates. Maximal degree in co-relation 2636. Up to 533 conditions per place. [2024-06-28 02:47:16,743 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 47 selfloop transitions, 20 changer transitions 0/79 dead transitions. [2024-06-28 02:47:16,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 79 transitions, 638 flow [2024-06-28 02:47:16,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:47:16,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:47:16,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 117 transitions. [2024-06-28 02:47:16,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2024-06-28 02:47:16,744 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 440 flow. Second operand 6 states and 117 transitions. [2024-06-28 02:47:16,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 79 transitions, 638 flow [2024-06-28 02:47:16,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 622 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-06-28 02:47:16,749 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 487 flow [2024-06-28 02:47:16,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=487, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-06-28 02:47:16,749 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 44 predicate places. [2024-06-28 02:47:16,749 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 487 flow [2024-06-28 02:47:16,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:16,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:16,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:16,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:47:16,750 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)] === [2024-06-28 02:47:16,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:16,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1152781830, now seen corresponding path program 1 times [2024-06-28 02:47:16,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:16,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196835616] [2024-06-28 02:47:16,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:16,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:16,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:16,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196835616] [2024-06-28 02:47:16,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196835616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:16,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:16,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:47:16,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998748210] [2024-06-28 02:47:16,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:16,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:47:16,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:16,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:47:16,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:47:16,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 02:47:16,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 487 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:16,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:16,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 02:47:16,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:17,073 INFO L124 PetriNetUnfolderBase]: 469/899 cut-off events. [2024-06-28 02:47:17,073 INFO L125 PetriNetUnfolderBase]: For 4515/4524 co-relation queries the response was YES. [2024-06-28 02:47:17,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3497 conditions, 899 events. 469/899 cut-off events. For 4515/4524 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4278 event pairs, 127 based on Foata normal form. 12/901 useless extension candidates. Maximal degree in co-relation 3456. Up to 579 conditions per place. [2024-06-28 02:47:17,079 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 76 selfloop transitions, 27 changer transitions 0/112 dead transitions. [2024-06-28 02:47:17,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 112 transitions, 918 flow [2024-06-28 02:47:17,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:47:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:47:17,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 02:47:17,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-06-28 02:47:17,080 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 487 flow. Second operand 9 states and 177 transitions. [2024-06-28 02:47:17,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 112 transitions, 918 flow [2024-06-28 02:47:17,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 112 transitions, 888 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-28 02:47:17,089 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 634 flow [2024-06-28 02:47:17,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=634, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-06-28 02:47:17,091 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 54 predicate places. [2024-06-28 02:47:17,091 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 634 flow [2024-06-28 02:47:17,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:17,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:17,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:17,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:47:17,091 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)] === [2024-06-28 02:47:17,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:17,092 INFO L85 PathProgramCache]: Analyzing trace with hash -969510364, now seen corresponding path program 2 times [2024-06-28 02:47:17,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:17,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927424797] [2024-06-28 02:47:17,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:17,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:17,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:17,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927424797] [2024-06-28 02:47:17,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927424797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:17,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:17,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:47:17,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934311247] [2024-06-28 02:47:17,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:17,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:47:17,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:17,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:47:17,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:47:17,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 02:47:17,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 634 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:17,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:17,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 02:47:17,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:17,422 INFO L124 PetriNetUnfolderBase]: 504/968 cut-off events. [2024-06-28 02:47:17,422 INFO L125 PetriNetUnfolderBase]: For 6247/6256 co-relation queries the response was YES. [2024-06-28 02:47:17,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 968 events. 504/968 cut-off events. For 6247/6256 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4761 event pairs, 137 based on Foata normal form. 12/970 useless extension candidates. Maximal degree in co-relation 4027. Up to 569 conditions per place. [2024-06-28 02:47:17,429 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 80 selfloop transitions, 34 changer transitions 0/123 dead transitions. [2024-06-28 02:47:17,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 123 transitions, 1090 flow [2024-06-28 02:47:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:47:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:47:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-28 02:47:17,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184275184275184 [2024-06-28 02:47:17,431 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 634 flow. Second operand 11 states and 211 transitions. [2024-06-28 02:47:17,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 123 transitions, 1090 flow [2024-06-28 02:47:17,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 123 transitions, 1041 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 02:47:17,440 INFO L231 Difference]: Finished difference. Result has 102 places, 85 transitions, 716 flow [2024-06-28 02:47:17,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=716, PETRI_PLACES=102, PETRI_TRANSITIONS=85} [2024-06-28 02:47:17,441 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 64 predicate places. [2024-06-28 02:47:17,442 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 85 transitions, 716 flow [2024-06-28 02:47:17,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:17,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:17,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:17,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:47:17,442 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)] === [2024-06-28 02:47:17,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:17,443 INFO L85 PathProgramCache]: Analyzing trace with hash -455154334, now seen corresponding path program 3 times [2024-06-28 02:47:17,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:17,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689610680] [2024-06-28 02:47:17,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:17,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:17,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:17,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:17,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689610680] [2024-06-28 02:47:17,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689610680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:17,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:17,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:47:17,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593234023] [2024-06-28 02:47:17,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:17,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:47:17,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:17,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:47:17,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:47:17,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 02:47:17,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 85 transitions, 716 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:17,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:17,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 02:47:17,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:17,780 INFO L124 PetriNetUnfolderBase]: 545/1039 cut-off events. [2024-06-28 02:47:17,780 INFO L125 PetriNetUnfolderBase]: For 7845/7854 co-relation queries the response was YES. [2024-06-28 02:47:17,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4496 conditions, 1039 events. 545/1039 cut-off events. For 7845/7854 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5177 event pairs, 139 based on Foata normal form. 12/1041 useless extension candidates. Maximal degree in co-relation 4447. Up to 506 conditions per place. [2024-06-28 02:47:17,787 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 70 selfloop transitions, 42 changer transitions 0/121 dead transitions. [2024-06-28 02:47:17,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 121 transitions, 1144 flow [2024-06-28 02:47:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:47:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:47:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 02:47:17,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-06-28 02:47:17,789 INFO L175 Difference]: Start difference. First operand has 102 places, 85 transitions, 716 flow. Second operand 10 states and 187 transitions. [2024-06-28 02:47:17,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 121 transitions, 1144 flow [2024-06-28 02:47:17,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 121 transitions, 1091 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 02:47:17,798 INFO L231 Difference]: Finished difference. Result has 106 places, 90 transitions, 812 flow [2024-06-28 02:47:17,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=812, PETRI_PLACES=106, PETRI_TRANSITIONS=90} [2024-06-28 02:47:17,799 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 68 predicate places. [2024-06-28 02:47:17,800 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 90 transitions, 812 flow [2024-06-28 02:47:17,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:17,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:17,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:17,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:47:17,800 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)] === [2024-06-28 02:47:17,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1102268154, now seen corresponding path program 1 times [2024-06-28 02:47:17,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:17,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402206817] [2024-06-28 02:47:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:17,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:17,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:17,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402206817] [2024-06-28 02:47:17,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402206817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:17,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:17,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:47:17,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664895048] [2024-06-28 02:47:17,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:17,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:47:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:47:17,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:47:18,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 02:47:18,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 90 transitions, 812 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:18,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:18,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 02:47:18,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:18,198 INFO L124 PetriNetUnfolderBase]: 556/1086 cut-off events. [2024-06-28 02:47:18,198 INFO L125 PetriNetUnfolderBase]: For 9811/9820 co-relation queries the response was YES. [2024-06-28 02:47:18,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4866 conditions, 1086 events. 556/1086 cut-off events. For 9811/9820 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5700 event pairs, 169 based on Foata normal form. 14/1092 useless extension candidates. Maximal degree in co-relation 4815. Up to 802 conditions per place. [2024-06-28 02:47:18,205 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 90 selfloop transitions, 20 changer transitions 0/125 dead transitions. [2024-06-28 02:47:18,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 125 transitions, 1202 flow [2024-06-28 02:47:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:47:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:47:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 02:47:18,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5101351351351351 [2024-06-28 02:47:18,207 INFO L175 Difference]: Start difference. First operand has 106 places, 90 transitions, 812 flow. Second operand 8 states and 151 transitions. [2024-06-28 02:47:18,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 125 transitions, 1202 flow [2024-06-28 02:47:18,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 125 transitions, 1148 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 02:47:18,218 INFO L231 Difference]: Finished difference. Result has 113 places, 101 transitions, 914 flow [2024-06-28 02:47:18,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=914, PETRI_PLACES=113, PETRI_TRANSITIONS=101} [2024-06-28 02:47:18,218 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 75 predicate places. [2024-06-28 02:47:18,218 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 101 transitions, 914 flow [2024-06-28 02:47:18,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:18,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:18,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:18,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:47:18,219 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)] === [2024-06-28 02:47:18,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:18,220 INFO L85 PathProgramCache]: Analyzing trace with hash 983507472, now seen corresponding path program 2 times [2024-06-28 02:47:18,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:18,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969509732] [2024-06-28 02:47:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:18,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:18,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:18,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:18,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969509732] [2024-06-28 02:47:18,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969509732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:18,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:18,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:47:18,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161905027] [2024-06-28 02:47:18,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:18,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:47:18,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:18,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:47:18,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:47:18,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 02:47:18,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 101 transitions, 914 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:18,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:18,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 02:47:18,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:18,600 INFO L124 PetriNetUnfolderBase]: 596/1150 cut-off events. [2024-06-28 02:47:18,600 INFO L125 PetriNetUnfolderBase]: For 11230/11239 co-relation queries the response was YES. [2024-06-28 02:47:18,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5301 conditions, 1150 events. 596/1150 cut-off events. For 11230/11239 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6073 event pairs, 194 based on Foata normal form. 14/1156 useless extension candidates. Maximal degree in co-relation 5245. Up to 810 conditions per place. [2024-06-28 02:47:18,609 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 97 selfloop transitions, 26 changer transitions 0/138 dead transitions. [2024-06-28 02:47:18,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 138 transitions, 1347 flow [2024-06-28 02:47:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:47:18,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:47:18,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 02:47:18,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075075075075075 [2024-06-28 02:47:18,610 INFO L175 Difference]: Start difference. First operand has 113 places, 101 transitions, 914 flow. Second operand 9 states and 169 transitions. [2024-06-28 02:47:18,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 138 transitions, 1347 flow [2024-06-28 02:47:18,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 138 transitions, 1291 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-06-28 02:47:18,625 INFO L231 Difference]: Finished difference. Result has 126 places, 111 transitions, 1050 flow [2024-06-28 02:47:18,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1050, PETRI_PLACES=126, PETRI_TRANSITIONS=111} [2024-06-28 02:47:18,626 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 88 predicate places. [2024-06-28 02:47:18,626 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 111 transitions, 1050 flow [2024-06-28 02:47:18,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:18,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:18,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:18,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:47:18,627 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)] === [2024-06-28 02:47:18,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:18,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1301714094, now seen corresponding path program 3 times [2024-06-28 02:47:18,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:18,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942177156] [2024-06-28 02:47:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:18,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:18,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:18,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942177156] [2024-06-28 02:47:18,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942177156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:18,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:18,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:47:18,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304855988] [2024-06-28 02:47:18,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:18,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:47:18,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:18,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:47:18,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:47:18,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 02:47:18,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 111 transitions, 1050 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:18,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:18,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 02:47:18,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:18,985 INFO L124 PetriNetUnfolderBase]: 584/1130 cut-off events. [2024-06-28 02:47:18,985 INFO L125 PetriNetUnfolderBase]: For 11832/11838 co-relation queries the response was YES. [2024-06-28 02:47:18,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 1130 events. 584/1130 cut-off events. For 11832/11838 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5966 event pairs, 187 based on Foata normal form. 12/1134 useless extension candidates. Maximal degree in co-relation 5246. Up to 831 conditions per place. [2024-06-28 02:47:18,993 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 102 selfloop transitions, 22 changer transitions 0/139 dead transitions. [2024-06-28 02:47:18,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 139 transitions, 1392 flow [2024-06-28 02:47:18,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:47:18,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:47:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 02:47:18,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2024-06-28 02:47:18,994 INFO L175 Difference]: Start difference. First operand has 126 places, 111 transitions, 1050 flow. Second operand 8 states and 156 transitions. [2024-06-28 02:47:18,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 139 transitions, 1392 flow [2024-06-28 02:47:19,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 139 transitions, 1343 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 02:47:19,012 INFO L231 Difference]: Finished difference. Result has 132 places, 113 transitions, 1074 flow [2024-06-28 02:47:19,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1074, PETRI_PLACES=132, PETRI_TRANSITIONS=113} [2024-06-28 02:47:19,013 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 94 predicate places. [2024-06-28 02:47:19,013 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 113 transitions, 1074 flow [2024-06-28 02:47:19,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:19,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:19,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:19,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:47:19,013 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)] === [2024-06-28 02:47:19,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:19,014 INFO L85 PathProgramCache]: Analyzing trace with hash 875427319, now seen corresponding path program 1 times [2024-06-28 02:47:19,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:19,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583963974] [2024-06-28 02:47:19,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:19,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:19,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:19,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:19,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583963974] [2024-06-28 02:47:19,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583963974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:19,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:19,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:47:19,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569004743] [2024-06-28 02:47:19,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:19,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:47:19,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:19,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:47:19,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:47:19,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-28 02:47:19,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 113 transitions, 1074 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:19,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:19,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-28 02:47:19,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:19,235 INFO L124 PetriNetUnfolderBase]: 449/1039 cut-off events. [2024-06-28 02:47:19,235 INFO L125 PetriNetUnfolderBase]: For 8370/8430 co-relation queries the response was YES. [2024-06-28 02:47:19,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4448 conditions, 1039 events. 449/1039 cut-off events. For 8370/8430 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6456 event pairs, 104 based on Foata normal form. 16/1026 useless extension candidates. Maximal degree in co-relation 4382. Up to 217 conditions per place. [2024-06-28 02:47:19,243 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 59 selfloop transitions, 41 changer transitions 0/146 dead transitions. [2024-06-28 02:47:19,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 146 transitions, 1368 flow [2024-06-28 02:47:19,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:47:19,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:47:19,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-28 02:47:19,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6336336336336337 [2024-06-28 02:47:19,244 INFO L175 Difference]: Start difference. First operand has 132 places, 113 transitions, 1074 flow. Second operand 9 states and 211 transitions. [2024-06-28 02:47:19,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 146 transitions, 1368 flow [2024-06-28 02:47:19,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 146 transitions, 1301 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 02:47:19,260 INFO L231 Difference]: Finished difference. Result has 138 places, 112 transitions, 1138 flow [2024-06-28 02:47:19,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1138, PETRI_PLACES=138, PETRI_TRANSITIONS=112} [2024-06-28 02:47:19,261 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 100 predicate places. [2024-06-28 02:47:19,261 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 112 transitions, 1138 flow [2024-06-28 02:47:19,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:19,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:19,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:19,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:47:19,262 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)] === [2024-06-28 02:47:19,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:19,262 INFO L85 PathProgramCache]: Analyzing trace with hash 567922068, now seen corresponding path program 1 times [2024-06-28 02:47:19,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:19,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272659137] [2024-06-28 02:47:19,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:19,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:19,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:19,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272659137] [2024-06-28 02:47:19,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272659137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:19,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:19,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:47:19,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296492235] [2024-06-28 02:47:19,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:19,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:47:19,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:19,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:47:19,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:47:19,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 02:47:19,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 112 transitions, 1138 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:19,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:19,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 02:47:19,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:19,725 INFO L124 PetriNetUnfolderBase]: 762/1495 cut-off events. [2024-06-28 02:47:19,726 INFO L125 PetriNetUnfolderBase]: For 18287/18331 co-relation queries the response was YES. [2024-06-28 02:47:19,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7305 conditions, 1495 events. 762/1495 cut-off events. For 18287/18331 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8489 event pairs, 260 based on Foata normal form. 12/1493 useless extension candidates. Maximal degree in co-relation 7237. Up to 1068 conditions per place. [2024-06-28 02:47:19,737 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 122 selfloop transitions, 28 changer transitions 0/164 dead transitions. [2024-06-28 02:47:19,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 164 transitions, 1838 flow [2024-06-28 02:47:19,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:47:19,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:47:19,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 187 transitions. [2024-06-28 02:47:19,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42117117117117114 [2024-06-28 02:47:19,739 INFO L175 Difference]: Start difference. First operand has 138 places, 112 transitions, 1138 flow. Second operand 12 states and 187 transitions. [2024-06-28 02:47:19,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 164 transitions, 1838 flow [2024-06-28 02:47:19,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 164 transitions, 1826 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 02:47:19,765 INFO L231 Difference]: Finished difference. Result has 155 places, 128 transitions, 1438 flow [2024-06-28 02:47:19,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1438, PETRI_PLACES=155, PETRI_TRANSITIONS=128} [2024-06-28 02:47:19,766 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 117 predicate places. [2024-06-28 02:47:19,766 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 128 transitions, 1438 flow [2024-06-28 02:47:19,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:19,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:19,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:19,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:47:19,767 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)] === [2024-06-28 02:47:19,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash -480435368, now seen corresponding path program 2 times [2024-06-28 02:47:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:19,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79210733] [2024-06-28 02:47:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:19,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:19,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:19,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79210733] [2024-06-28 02:47:19,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79210733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:19,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:19,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:47:19,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805545136] [2024-06-28 02:47:19,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:19,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:47:19,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:19,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:47:19,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:47:19,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 02:47:19,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 128 transitions, 1438 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:19,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:19,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 02:47:19,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:20,224 INFO L124 PetriNetUnfolderBase]: 836/1617 cut-off events. [2024-06-28 02:47:20,224 INFO L125 PetriNetUnfolderBase]: For 21697/21744 co-relation queries the response was YES. [2024-06-28 02:47:20,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8349 conditions, 1617 events. 836/1617 cut-off events. For 21697/21744 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9226 event pairs, 284 based on Foata normal form. 6/1607 useless extension candidates. Maximal degree in co-relation 8273. Up to 1000 conditions per place. [2024-06-28 02:47:20,236 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 114 selfloop transitions, 37 changer transitions 0/166 dead transitions. [2024-06-28 02:47:20,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 166 transitions, 2012 flow [2024-06-28 02:47:20,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:47:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:47:20,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 02:47:20,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5371621621621622 [2024-06-28 02:47:20,238 INFO L175 Difference]: Start difference. First operand has 155 places, 128 transitions, 1438 flow. Second operand 8 states and 159 transitions. [2024-06-28 02:47:20,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 166 transitions, 2012 flow [2024-06-28 02:47:20,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 166 transitions, 1970 flow, removed 15 selfloop flow, removed 2 redundant places. [2024-06-28 02:47:20,268 INFO L231 Difference]: Finished difference. Result has 163 places, 135 transitions, 1595 flow [2024-06-28 02:47:20,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1595, PETRI_PLACES=163, PETRI_TRANSITIONS=135} [2024-06-28 02:47:20,269 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 125 predicate places. [2024-06-28 02:47:20,269 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 135 transitions, 1595 flow [2024-06-28 02:47:20,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:20,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:20,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:20,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:47:20,270 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)] === [2024-06-28 02:47:20,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:20,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1925364983, now seen corresponding path program 2 times [2024-06-28 02:47:20,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:20,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589741932] [2024-06-28 02:47:20,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:20,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:20,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:20,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:20,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589741932] [2024-06-28 02:47:20,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589741932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:20,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:20,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:47:20,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383065643] [2024-06-28 02:47:20,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:20,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:47:20,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:20,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:47:20,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:47:20,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-28 02:47:20,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 135 transitions, 1595 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:20,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:20,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-28 02:47:20,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:20,563 INFO L124 PetriNetUnfolderBase]: 549/1285 cut-off events. [2024-06-28 02:47:20,563 INFO L125 PetriNetUnfolderBase]: For 13426/13538 co-relation queries the response was YES. [2024-06-28 02:47:20,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6300 conditions, 1285 events. 549/1285 cut-off events. For 13426/13538 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8410 event pairs, 158 based on Foata normal form. 14/1250 useless extension candidates. Maximal degree in co-relation 6221. Up to 517 conditions per place. [2024-06-28 02:47:20,578 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 72 selfloop transitions, 28 changer transitions 0/156 dead transitions. [2024-06-28 02:47:20,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 156 transitions, 1870 flow [2024-06-28 02:47:20,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:47:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:47:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-06-28 02:47:20,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 02:47:20,579 INFO L175 Difference]: Start difference. First operand has 163 places, 135 transitions, 1595 flow. Second operand 6 states and 148 transitions. [2024-06-28 02:47:20,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 156 transitions, 1870 flow [2024-06-28 02:47:20,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 156 transitions, 1822 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 02:47:20,610 INFO L231 Difference]: Finished difference. Result has 169 places, 136 transitions, 1675 flow [2024-06-28 02:47:20,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1501, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1675, PETRI_PLACES=169, PETRI_TRANSITIONS=136} [2024-06-28 02:47:20,611 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 131 predicate places. [2024-06-28 02:47:20,611 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 136 transitions, 1675 flow [2024-06-28 02:47:20,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:20,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:20,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:20,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:47:20,612 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)] === [2024-06-28 02:47:20,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:20,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1060492785, now seen corresponding path program 3 times [2024-06-28 02:47:20,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:20,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406173423] [2024-06-28 02:47:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:20,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:20,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:20,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406173423] [2024-06-28 02:47:20,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406173423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:20,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:20,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:47:20,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726580503] [2024-06-28 02:47:20,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:20,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:47:20,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:20,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:47:20,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:47:20,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-28 02:47:20,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 136 transitions, 1675 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:20,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:20,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-28 02:47:20,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:20,945 INFO L124 PetriNetUnfolderBase]: 497/1200 cut-off events. [2024-06-28 02:47:20,946 INFO L125 PetriNetUnfolderBase]: For 12473/12584 co-relation queries the response was YES. [2024-06-28 02:47:20,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5846 conditions, 1200 events. 497/1200 cut-off events. For 12473/12584 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7800 event pairs, 136 based on Foata normal form. 12/1167 useless extension candidates. Maximal degree in co-relation 5763. Up to 524 conditions per place. [2024-06-28 02:47:20,957 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 74 selfloop transitions, 28 changer transitions 0/151 dead transitions. [2024-06-28 02:47:20,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 151 transitions, 1825 flow [2024-06-28 02:47:20,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:47:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:47:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 02:47:20,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-28 02:47:20,959 INFO L175 Difference]: Start difference. First operand has 169 places, 136 transitions, 1675 flow. Second operand 8 states and 184 transitions. [2024-06-28 02:47:20,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 151 transitions, 1825 flow [2024-06-28 02:47:20,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 151 transitions, 1798 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 02:47:20,987 INFO L231 Difference]: Finished difference. Result has 174 places, 127 transitions, 1581 flow [2024-06-28 02:47:20,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1520, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1581, PETRI_PLACES=174, PETRI_TRANSITIONS=127} [2024-06-28 02:47:20,987 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 136 predicate places. [2024-06-28 02:47:20,987 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 127 transitions, 1581 flow [2024-06-28 02:47:20,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:20,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:20,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:20,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:47:20,988 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)] === [2024-06-28 02:47:20,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:20,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1491359386, now seen corresponding path program 3 times [2024-06-28 02:47:20,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:20,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614606651] [2024-06-28 02:47:20,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:20,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:21,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:21,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:21,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614606651] [2024-06-28 02:47:21,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614606651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:21,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:21,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:47:21,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327917112] [2024-06-28 02:47:21,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:21,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:47:21,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:21,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:47:21,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:47:21,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 02:47:21,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 127 transitions, 1581 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:21,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:21,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 02:47:21,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:21,348 INFO L124 PetriNetUnfolderBase]: 715/1478 cut-off events. [2024-06-28 02:47:21,348 INFO L125 PetriNetUnfolderBase]: For 22903/22966 co-relation queries the response was YES. [2024-06-28 02:47:21,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7897 conditions, 1478 events. 715/1478 cut-off events. For 22903/22966 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8722 event pairs, 262 based on Foata normal form. 6/1470 useless extension candidates. Maximal degree in co-relation 7812. Up to 1039 conditions per place. [2024-06-28 02:47:21,360 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 116 selfloop transitions, 21 changer transitions 0/151 dead transitions. [2024-06-28 02:47:21,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 151 transitions, 1993 flow [2024-06-28 02:47:21,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:47:21,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:47:21,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2024-06-28 02:47:21,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5585585585585585 [2024-06-28 02:47:21,361 INFO L175 Difference]: Start difference. First operand has 174 places, 127 transitions, 1581 flow. Second operand 6 states and 124 transitions. [2024-06-28 02:47:21,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 151 transitions, 1993 flow [2024-06-28 02:47:21,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 151 transitions, 1915 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 02:47:21,393 INFO L231 Difference]: Finished difference. Result has 174 places, 129 transitions, 1588 flow [2024-06-28 02:47:21,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1588, PETRI_PLACES=174, PETRI_TRANSITIONS=129} [2024-06-28 02:47:21,394 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 136 predicate places. [2024-06-28 02:47:21,394 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 129 transitions, 1588 flow [2024-06-28 02:47:21,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:21,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:21,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:21,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:47:21,395 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)] === [2024-06-28 02:47:21,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:21,395 INFO L85 PathProgramCache]: Analyzing trace with hash -342668355, now seen corresponding path program 1 times [2024-06-28 02:47:21,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:21,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425578164] [2024-06-28 02:47:21,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:21,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:21,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:21,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425578164] [2024-06-28 02:47:21,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425578164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:21,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:21,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:47:21,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595455922] [2024-06-28 02:47:21,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:21,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:47:21,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:21,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:47:21,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:47:21,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 02:47:21,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 129 transitions, 1588 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:21,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:21,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 02:47:21,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:21,823 INFO L124 PetriNetUnfolderBase]: 703/1454 cut-off events. [2024-06-28 02:47:21,823 INFO L125 PetriNetUnfolderBase]: For 24484/24489 co-relation queries the response was YES. [2024-06-28 02:47:21,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7923 conditions, 1454 events. 703/1454 cut-off events. For 24484/24489 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8560 event pairs, 279 based on Foata normal form. 4/1450 useless extension candidates. Maximal degree in co-relation 7837. Up to 1244 conditions per place. [2024-06-28 02:47:21,835 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 100 selfloop transitions, 22 changer transitions 0/142 dead transitions. [2024-06-28 02:47:21,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 142 transitions, 1876 flow [2024-06-28 02:47:21,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:47:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:47:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 02:47:21,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 02:47:21,838 INFO L175 Difference]: Start difference. First operand has 174 places, 129 transitions, 1588 flow. Second operand 8 states and 140 transitions. [2024-06-28 02:47:21,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 142 transitions, 1876 flow [2024-06-28 02:47:21,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 142 transitions, 1846 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 02:47:21,871 INFO L231 Difference]: Finished difference. Result has 179 places, 129 transitions, 1606 flow [2024-06-28 02:47:21,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1606, PETRI_PLACES=179, PETRI_TRANSITIONS=129} [2024-06-28 02:47:21,871 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 141 predicate places. [2024-06-28 02:47:21,871 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 129 transitions, 1606 flow [2024-06-28 02:47:21,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:21,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:21,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:21,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:47:21,872 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)] === [2024-06-28 02:47:21,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:21,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1086538025, now seen corresponding path program 2 times [2024-06-28 02:47:21,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:21,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600036654] [2024-06-28 02:47:21,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:21,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:22,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:22,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600036654] [2024-06-28 02:47:22,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600036654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:22,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:22,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:47:22,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789079462] [2024-06-28 02:47:22,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:22,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:47:22,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:22,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:47:22,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:47:22,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 02:47:22,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 129 transitions, 1606 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:22,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:22,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 02:47:22,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:22,345 INFO L124 PetriNetUnfolderBase]: 710/1467 cut-off events. [2024-06-28 02:47:22,345 INFO L125 PetriNetUnfolderBase]: For 26478/26483 co-relation queries the response was YES. [2024-06-28 02:47:22,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8011 conditions, 1467 events. 710/1467 cut-off events. For 26478/26483 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8633 event pairs, 257 based on Foata normal form. 4/1463 useless extension candidates. Maximal degree in co-relation 7924. Up to 1219 conditions per place. [2024-06-28 02:47:22,356 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 96 selfloop transitions, 30 changer transitions 0/146 dead transitions. [2024-06-28 02:47:22,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 146 transitions, 1964 flow [2024-06-28 02:47:22,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:47:22,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:47:22,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 02:47:22,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-28 02:47:22,358 INFO L175 Difference]: Start difference. First operand has 179 places, 129 transitions, 1606 flow. Second operand 8 states and 139 transitions. [2024-06-28 02:47:22,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 146 transitions, 1964 flow [2024-06-28 02:47:22,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 146 transitions, 1888 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:47:22,392 INFO L231 Difference]: Finished difference. Result has 178 places, 132 transitions, 1620 flow [2024-06-28 02:47:22,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1620, PETRI_PLACES=178, PETRI_TRANSITIONS=132} [2024-06-28 02:47:22,393 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 140 predicate places. [2024-06-28 02:47:22,393 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 132 transitions, 1620 flow [2024-06-28 02:47:22,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:22,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:22,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:22,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:47:22,394 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)] === [2024-06-28 02:47:22,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:22,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1806831745, now seen corresponding path program 3 times [2024-06-28 02:47:22,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:22,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340354448] [2024-06-28 02:47:22,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:22,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:22,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:22,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:22,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340354448] [2024-06-28 02:47:22,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340354448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:22,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:22,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:47:22,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655013247] [2024-06-28 02:47:22,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:22,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:47:22,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:22,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:47:22,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:47:22,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 02:47:22,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 132 transitions, 1620 flow. Second operand has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:22,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:22,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 02:47:22,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:22,816 INFO L124 PetriNetUnfolderBase]: 707/1466 cut-off events. [2024-06-28 02:47:22,816 INFO L125 PetriNetUnfolderBase]: For 27663/27668 co-relation queries the response was YES. [2024-06-28 02:47:22,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8033 conditions, 1466 events. 707/1466 cut-off events. For 27663/27668 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8698 event pairs, 246 based on Foata normal form. 4/1462 useless extension candidates. Maximal degree in co-relation 7948. Up to 1217 conditions per place. [2024-06-28 02:47:22,828 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 98 selfloop transitions, 29 changer transitions 0/147 dead transitions. [2024-06-28 02:47:22,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 147 transitions, 1916 flow [2024-06-28 02:47:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:47:22,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:47:22,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 02:47:22,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 02:47:22,829 INFO L175 Difference]: Start difference. First operand has 178 places, 132 transitions, 1620 flow. Second operand 9 states and 153 transitions. [2024-06-28 02:47:22,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 147 transitions, 1916 flow [2024-06-28 02:47:22,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 147 transitions, 1867 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 02:47:22,863 INFO L231 Difference]: Finished difference. Result has 184 places, 132 transitions, 1633 flow [2024-06-28 02:47:22,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1633, PETRI_PLACES=184, PETRI_TRANSITIONS=132} [2024-06-28 02:47:22,863 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 146 predicate places. [2024-06-28 02:47:22,863 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 132 transitions, 1633 flow [2024-06-28 02:47:22,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.666666666666666) internal successors, (114), 9 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:22,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:22,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:22,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:47:22,864 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)] === [2024-06-28 02:47:22,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:22,864 INFO L85 PathProgramCache]: Analyzing trace with hash -278179035, now seen corresponding path program 1 times [2024-06-28 02:47:22,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:22,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678777799] [2024-06-28 02:47:22,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:22,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:23,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:23,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:23,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678777799] [2024-06-28 02:47:23,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678777799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:23,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:23,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:47:23,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548207530] [2024-06-28 02:47:23,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:23,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:47:23,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:23,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:47:23,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:47:23,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:23,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 132 transitions, 1633 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:23,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:23,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:23,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:23,328 INFO L124 PetriNetUnfolderBase]: 754/1505 cut-off events. [2024-06-28 02:47:23,328 INFO L125 PetriNetUnfolderBase]: For 28724/28727 co-relation queries the response was YES. [2024-06-28 02:47:23,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8187 conditions, 1505 events. 754/1505 cut-off events. For 28724/28727 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8614 event pairs, 249 based on Foata normal form. 6/1503 useless extension candidates. Maximal degree in co-relation 8101. Up to 1128 conditions per place. [2024-06-28 02:47:23,340 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 123 selfloop transitions, 36 changer transitions 0/166 dead transitions. [2024-06-28 02:47:23,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 166 transitions, 2078 flow [2024-06-28 02:47:23,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:47:23,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:47:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 02:47:23,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-28 02:47:23,341 INFO L175 Difference]: Start difference. First operand has 184 places, 132 transitions, 1633 flow. Second operand 11 states and 191 transitions. [2024-06-28 02:47:23,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 166 transitions, 2078 flow [2024-06-28 02:47:23,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 166 transitions, 1979 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 02:47:23,377 INFO L231 Difference]: Finished difference. Result has 186 places, 133 transitions, 1617 flow [2024-06-28 02:47:23,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1617, PETRI_PLACES=186, PETRI_TRANSITIONS=133} [2024-06-28 02:47:23,380 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 148 predicate places. [2024-06-28 02:47:23,380 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 133 transitions, 1617 flow [2024-06-28 02:47:23,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:23,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:23,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:23,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:47:23,381 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)] === [2024-06-28 02:47:23,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:23,382 INFO L85 PathProgramCache]: Analyzing trace with hash 308488131, now seen corresponding path program 2 times [2024-06-28 02:47:23,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:23,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631912013] [2024-06-28 02:47:23,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:23,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:23,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:23,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631912013] [2024-06-28 02:47:23,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631912013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:23,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:23,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:47:23,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678475916] [2024-06-28 02:47:23,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:23,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:47:23,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:23,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:47:23,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:47:23,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:23,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 133 transitions, 1617 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:23,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:23,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:23,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:23,944 INFO L124 PetriNetUnfolderBase]: 775/1546 cut-off events. [2024-06-28 02:47:23,944 INFO L125 PetriNetUnfolderBase]: For 30732/30735 co-relation queries the response was YES. [2024-06-28 02:47:23,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8423 conditions, 1546 events. 775/1546 cut-off events. For 30732/30735 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8928 event pairs, 240 based on Foata normal form. 6/1544 useless extension candidates. Maximal degree in co-relation 8338. Up to 1067 conditions per place. [2024-06-28 02:47:23,955 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 133 selfloop transitions, 44 changer transitions 0/184 dead transitions. [2024-06-28 02:47:23,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 184 transitions, 2208 flow [2024-06-28 02:47:23,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-28 02:47:23,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-28 02:47:23,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 266 transitions. [2024-06-28 02:47:23,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-06-28 02:47:23,957 INFO L175 Difference]: Start difference. First operand has 186 places, 133 transitions, 1617 flow. Second operand 16 states and 266 transitions. [2024-06-28 02:47:23,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 184 transitions, 2208 flow [2024-06-28 02:47:23,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 184 transitions, 2118 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:47:23,994 INFO L231 Difference]: Finished difference. Result has 193 places, 136 transitions, 1648 flow [2024-06-28 02:47:23,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1648, PETRI_PLACES=193, PETRI_TRANSITIONS=136} [2024-06-28 02:47:23,996 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 155 predicate places. [2024-06-28 02:47:23,996 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 136 transitions, 1648 flow [2024-06-28 02:47:23,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:23,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:23,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:23,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:47:23,997 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)] === [2024-06-28 02:47:23,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:23,998 INFO L85 PathProgramCache]: Analyzing trace with hash 308965221, now seen corresponding path program 3 times [2024-06-28 02:47:23,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:23,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607699125] [2024-06-28 02:47:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:23,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:24,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:24,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:24,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607699125] [2024-06-28 02:47:24,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607699125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:24,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:24,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:47:24,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396709101] [2024-06-28 02:47:24,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:24,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:47:24,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:24,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:47:24,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:47:24,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:24,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 136 transitions, 1648 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:24,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:24,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:24,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:24,547 INFO L124 PetriNetUnfolderBase]: 787/1574 cut-off events. [2024-06-28 02:47:24,547 INFO L125 PetriNetUnfolderBase]: For 32803/32806 co-relation queries the response was YES. [2024-06-28 02:47:24,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8600 conditions, 1574 events. 787/1574 cut-off events. For 32803/32806 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9190 event pairs, 237 based on Foata normal form. 6/1572 useless extension candidates. Maximal degree in co-relation 8514. Up to 1071 conditions per place. [2024-06-28 02:47:24,559 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 125 selfloop transitions, 47 changer transitions 0/179 dead transitions. [2024-06-28 02:47:24,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 179 transitions, 2196 flow [2024-06-28 02:47:24,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 02:47:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 02:47:24,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 246 transitions. [2024-06-28 02:47:24,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 02:47:24,561 INFO L175 Difference]: Start difference. First operand has 193 places, 136 transitions, 1648 flow. Second operand 15 states and 246 transitions. [2024-06-28 02:47:24,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 179 transitions, 2196 flow [2024-06-28 02:47:24,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 179 transitions, 2078 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-28 02:47:24,631 INFO L231 Difference]: Finished difference. Result has 194 places, 137 transitions, 1642 flow [2024-06-28 02:47:24,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1642, PETRI_PLACES=194, PETRI_TRANSITIONS=137} [2024-06-28 02:47:24,632 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 156 predicate places. [2024-06-28 02:47:24,632 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 137 transitions, 1642 flow [2024-06-28 02:47:24,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:24,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:24,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:24,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:47:24,633 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)] === [2024-06-28 02:47:24,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:24,633 INFO L85 PathProgramCache]: Analyzing trace with hash 308949411, now seen corresponding path program 4 times [2024-06-28 02:47:24,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:24,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403463834] [2024-06-28 02:47:24,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:24,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:24,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:24,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403463834] [2024-06-28 02:47:24,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403463834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:24,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:24,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:47:24,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787360942] [2024-06-28 02:47:24,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:24,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:47:24,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:24,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:47:24,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:47:24,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:24,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 137 transitions, 1642 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:24,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:24,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:24,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:25,178 INFO L124 PetriNetUnfolderBase]: 778/1559 cut-off events. [2024-06-28 02:47:25,179 INFO L125 PetriNetUnfolderBase]: For 32865/32868 co-relation queries the response was YES. [2024-06-28 02:47:25,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8442 conditions, 1559 events. 778/1559 cut-off events. For 32865/32868 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9093 event pairs, 234 based on Foata normal form. 6/1557 useless extension candidates. Maximal degree in co-relation 8356. Up to 1069 conditions per place. [2024-06-28 02:47:25,189 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 131 selfloop transitions, 47 changer transitions 0/185 dead transitions. [2024-06-28 02:47:25,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 185 transitions, 2160 flow [2024-06-28 02:47:25,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-28 02:47:25,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-28 02:47:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 275 transitions. [2024-06-28 02:47:25,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43720190779014306 [2024-06-28 02:47:25,191 INFO L175 Difference]: Start difference. First operand has 194 places, 137 transitions, 1642 flow. Second operand 17 states and 275 transitions. [2024-06-28 02:47:25,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 185 transitions, 2160 flow [2024-06-28 02:47:25,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 185 transitions, 2089 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 02:47:25,228 INFO L231 Difference]: Finished difference. Result has 202 places, 137 transitions, 1669 flow [2024-06-28 02:47:25,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1571, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1669, PETRI_PLACES=202, PETRI_TRANSITIONS=137} [2024-06-28 02:47:25,229 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 164 predicate places. [2024-06-28 02:47:25,229 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 137 transitions, 1669 flow [2024-06-28 02:47:25,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:25,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:25,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:25,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:47:25,230 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)] === [2024-06-28 02:47:25,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:25,230 INFO L85 PathProgramCache]: Analyzing trace with hash 699064421, now seen corresponding path program 5 times [2024-06-28 02:47:25,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:25,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079128064] [2024-06-28 02:47:25,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:25,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:25,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:25,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079128064] [2024-06-28 02:47:25,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079128064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:25,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:25,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:47:25,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754829365] [2024-06-28 02:47:25,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:25,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:47:25,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:25,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:47:25,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:47:25,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:25,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 137 transitions, 1669 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:25,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:25,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:25,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:25,805 INFO L124 PetriNetUnfolderBase]: 820/1639 cut-off events. [2024-06-28 02:47:25,805 INFO L125 PetriNetUnfolderBase]: For 37555/37558 co-relation queries the response was YES. [2024-06-28 02:47:25,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8978 conditions, 1639 events. 820/1639 cut-off events. For 37555/37558 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9724 event pairs, 211 based on Foata normal form. 6/1637 useless extension candidates. Maximal degree in co-relation 8890. Up to 945 conditions per place. [2024-06-28 02:47:25,816 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 116 selfloop transitions, 62 changer transitions 0/185 dead transitions. [2024-06-28 02:47:25,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 185 transitions, 2310 flow [2024-06-28 02:47:25,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 02:47:25,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 02:47:25,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 245 transitions. [2024-06-28 02:47:25,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-28 02:47:25,818 INFO L175 Difference]: Start difference. First operand has 202 places, 137 transitions, 1669 flow. Second operand 15 states and 245 transitions. [2024-06-28 02:47:25,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 185 transitions, 2310 flow [2024-06-28 02:47:25,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 185 transitions, 2200 flow, removed 1 selfloop flow, removed 17 redundant places. [2024-06-28 02:47:25,864 INFO L231 Difference]: Finished difference. Result has 200 places, 141 transitions, 1728 flow [2024-06-28 02:47:25,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1559, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1728, PETRI_PLACES=200, PETRI_TRANSITIONS=141} [2024-06-28 02:47:25,864 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 162 predicate places. [2024-06-28 02:47:25,864 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 141 transitions, 1728 flow [2024-06-28 02:47:25,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:25,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:25,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:25,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:47:25,865 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)] === [2024-06-28 02:47:25,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:25,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1524194209, now seen corresponding path program 6 times [2024-06-28 02:47:25,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:25,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800040459] [2024-06-28 02:47:25,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:25,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:26,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:26,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800040459] [2024-06-28 02:47:26,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800040459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:26,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:26,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:47:26,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168278744] [2024-06-28 02:47:26,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:26,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:47:26,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:26,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:47:26,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:47:26,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:26,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 141 transitions, 1728 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:26,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:26,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:26,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:26,414 INFO L124 PetriNetUnfolderBase]: 811/1626 cut-off events. [2024-06-28 02:47:26,414 INFO L125 PetriNetUnfolderBase]: For 37838/37841 co-relation queries the response was YES. [2024-06-28 02:47:26,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8885 conditions, 1626 events. 811/1626 cut-off events. For 37838/37841 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9655 event pairs, 208 based on Foata normal form. 6/1624 useless extension candidates. Maximal degree in co-relation 8796. Up to 943 conditions per place. [2024-06-28 02:47:26,450 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 115 selfloop transitions, 62 changer transitions 0/184 dead transitions. [2024-06-28 02:47:26,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 184 transitions, 2274 flow [2024-06-28 02:47:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 02:47:26,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 02:47:26,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 244 transitions. [2024-06-28 02:47:26,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43963963963963965 [2024-06-28 02:47:26,451 INFO L175 Difference]: Start difference. First operand has 200 places, 141 transitions, 1728 flow. Second operand 15 states and 244 transitions. [2024-06-28 02:47:26,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 184 transitions, 2274 flow [2024-06-28 02:47:26,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 184 transitions, 2155 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 02:47:26,494 INFO L231 Difference]: Finished difference. Result has 206 places, 141 transitions, 1737 flow [2024-06-28 02:47:26,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1737, PETRI_PLACES=206, PETRI_TRANSITIONS=141} [2024-06-28 02:47:26,495 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 168 predicate places. [2024-06-28 02:47:26,495 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 141 transitions, 1737 flow [2024-06-28 02:47:26,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:26,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:26,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:26,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:47:26,495 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)] === [2024-06-28 02:47:26,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:26,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1591293181, now seen corresponding path program 7 times [2024-06-28 02:47:26,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:26,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492805667] [2024-06-28 02:47:26,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:26,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:26,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:26,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492805667] [2024-06-28 02:47:26,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492805667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:26,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:26,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:47:26,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030998390] [2024-06-28 02:47:26,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:26,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:47:26,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:26,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:47:26,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:47:26,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:26,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 141 transitions, 1737 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:26,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:26,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:26,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:27,084 INFO L124 PetriNetUnfolderBase]: 853/1706 cut-off events. [2024-06-28 02:47:27,084 INFO L125 PetriNetUnfolderBase]: For 42775/42778 co-relation queries the response was YES. [2024-06-28 02:47:27,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9420 conditions, 1706 events. 853/1706 cut-off events. For 42775/42778 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10270 event pairs, 213 based on Foata normal form. 6/1704 useless extension candidates. Maximal degree in co-relation 9330. Up to 955 conditions per place. [2024-06-28 02:47:27,096 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 133 selfloop transitions, 64 changer transitions 0/204 dead transitions. [2024-06-28 02:47:27,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 204 transitions, 2544 flow [2024-06-28 02:47:27,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-28 02:47:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-28 02:47:27,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 307 transitions. [2024-06-28 02:47:27,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366998577524893 [2024-06-28 02:47:27,097 INFO L175 Difference]: Start difference. First operand has 206 places, 141 transitions, 1737 flow. Second operand 19 states and 307 transitions. [2024-06-28 02:47:27,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 204 transitions, 2544 flow [2024-06-28 02:47:27,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 204 transitions, 2410 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-06-28 02:47:27,147 INFO L231 Difference]: Finished difference. Result has 211 places, 146 transitions, 1800 flow [2024-06-28 02:47:27,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1613, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1800, PETRI_PLACES=211, PETRI_TRANSITIONS=146} [2024-06-28 02:47:27,147 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 173 predicate places. [2024-06-28 02:47:27,148 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 146 transitions, 1800 flow [2024-06-28 02:47:27,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:27,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:27,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:27,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:47:27,148 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)] === [2024-06-28 02:47:27,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:27,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1591277371, now seen corresponding path program 8 times [2024-06-28 02:47:27,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:27,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771809849] [2024-06-28 02:47:27,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:27,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:27,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:27,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:27,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771809849] [2024-06-28 02:47:27,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771809849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:27,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:27,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:47:27,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718202366] [2024-06-28 02:47:27,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:27,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:47:27,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:27,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:47:27,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:47:27,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:27,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 146 transitions, 1800 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:27,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:27,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:27,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:27,730 INFO L124 PetriNetUnfolderBase]: 844/1691 cut-off events. [2024-06-28 02:47:27,730 INFO L125 PetriNetUnfolderBase]: For 42862/42865 co-relation queries the response was YES. [2024-06-28 02:47:27,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9277 conditions, 1691 events. 844/1691 cut-off events. For 42862/42865 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10145 event pairs, 209 based on Foata normal form. 6/1689 useless extension candidates. Maximal degree in co-relation 9186. Up to 953 conditions per place. [2024-06-28 02:47:27,741 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 125 selfloop transitions, 64 changer transitions 0/196 dead transitions. [2024-06-28 02:47:27,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 196 transitions, 2450 flow [2024-06-28 02:47:27,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-28 02:47:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-28 02:47:27,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 276 transitions. [2024-06-28 02:47:27,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43879173290937995 [2024-06-28 02:47:27,747 INFO L175 Difference]: Start difference. First operand has 211 places, 146 transitions, 1800 flow. Second operand 17 states and 276 transitions. [2024-06-28 02:47:27,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 196 transitions, 2450 flow [2024-06-28 02:47:27,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 196 transitions, 2281 flow, removed 14 selfloop flow, removed 14 redundant places. [2024-06-28 02:47:27,798 INFO L231 Difference]: Finished difference. Result has 214 places, 146 transitions, 1763 flow [2024-06-28 02:47:27,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1763, PETRI_PLACES=214, PETRI_TRANSITIONS=146} [2024-06-28 02:47:27,798 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 176 predicate places. [2024-06-28 02:47:27,799 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 146 transitions, 1763 flow [2024-06-28 02:47:27,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:27,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:27,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:27,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:47:27,800 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)] === [2024-06-28 02:47:27,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash 176733057, now seen corresponding path program 9 times [2024-06-28 02:47:27,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:27,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585175723] [2024-06-28 02:47:27,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:27,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:27,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:27,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585175723] [2024-06-28 02:47:27,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585175723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:27,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:27,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:47:27,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057587227] [2024-06-28 02:47:27,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:27,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:47:27,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:27,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:47:27,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:47:27,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:27,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 146 transitions, 1763 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:27,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:27,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:27,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:28,336 INFO L124 PetriNetUnfolderBase]: 835/1676 cut-off events. [2024-06-28 02:47:28,337 INFO L125 PetriNetUnfolderBase]: For 42407/42410 co-relation queries the response was YES. [2024-06-28 02:47:28,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9072 conditions, 1676 events. 835/1676 cut-off events. For 42407/42410 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10048 event pairs, 206 based on Foata normal form. 6/1674 useless extension candidates. Maximal degree in co-relation 8980. Up to 951 conditions per place. [2024-06-28 02:47:28,371 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 118 selfloop transitions, 63 changer transitions 0/188 dead transitions. [2024-06-28 02:47:28,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 188 transitions, 2321 flow [2024-06-28 02:47:28,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 02:47:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 02:47:28,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 234 transitions. [2024-06-28 02:47:28,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517374517374517 [2024-06-28 02:47:28,372 INFO L175 Difference]: Start difference. First operand has 214 places, 146 transitions, 1763 flow. Second operand 14 states and 234 transitions. [2024-06-28 02:47:28,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 188 transitions, 2321 flow [2024-06-28 02:47:28,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 188 transitions, 2189 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-06-28 02:47:28,420 INFO L231 Difference]: Finished difference. Result has 212 places, 146 transitions, 1761 flow [2024-06-28 02:47:28,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1761, PETRI_PLACES=212, PETRI_TRANSITIONS=146} [2024-06-28 02:47:28,421 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 174 predicate places. [2024-06-28 02:47:28,421 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 146 transitions, 1761 flow [2024-06-28 02:47:28,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:28,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:28,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:28,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:47:28,422 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)] === [2024-06-28 02:47:28,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:28,422 INFO L85 PathProgramCache]: Analyzing trace with hash 908125057, now seen corresponding path program 10 times [2024-06-28 02:47:28,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:28,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134676061] [2024-06-28 02:47:28,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:28,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:28,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:28,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:28,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134676061] [2024-06-28 02:47:28,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134676061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:28,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:28,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:47:28,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165895477] [2024-06-28 02:47:28,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:28,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:47:28,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:28,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:47:28,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:47:28,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:28,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 146 transitions, 1761 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:28,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:28,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:28,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:28,835 INFO L124 PetriNetUnfolderBase]: 826/1661 cut-off events. [2024-06-28 02:47:28,835 INFO L125 PetriNetUnfolderBase]: For 41891/41894 co-relation queries the response was YES. [2024-06-28 02:47:28,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8909 conditions, 1661 events. 826/1661 cut-off events. For 41891/41894 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9970 event pairs, 199 based on Foata normal form. 6/1659 useless extension candidates. Maximal degree in co-relation 8816. Up to 949 conditions per place. [2024-06-28 02:47:28,848 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 110 selfloop transitions, 59 changer transitions 0/176 dead transitions. [2024-06-28 02:47:28,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 176 transitions, 2199 flow [2024-06-28 02:47:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:47:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:47:28,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 02:47:28,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-28 02:47:28,850 INFO L175 Difference]: Start difference. First operand has 212 places, 146 transitions, 1761 flow. Second operand 10 states and 173 transitions. [2024-06-28 02:47:28,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 176 transitions, 2199 flow [2024-06-28 02:47:28,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 176 transitions, 2073 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-06-28 02:47:28,905 INFO L231 Difference]: Finished difference. Result has 209 places, 146 transitions, 1757 flow [2024-06-28 02:47:28,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1757, PETRI_PLACES=209, PETRI_TRANSITIONS=146} [2024-06-28 02:47:28,906 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 171 predicate places. [2024-06-28 02:47:28,906 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 146 transitions, 1757 flow [2024-06-28 02:47:28,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:28,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:28,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:28,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:47:28,907 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)] === [2024-06-28 02:47:28,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:28,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1924838159, now seen corresponding path program 1 times [2024-06-28 02:47:28,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:28,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806419077] [2024-06-28 02:47:28,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:28,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:29,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:29,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806419077] [2024-06-28 02:47:29,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806419077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:29,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:29,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:47:29,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874670397] [2024-06-28 02:47:29,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:29,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:47:29,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:29,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:47:29,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:47:29,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:29,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 146 transitions, 1757 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:29,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:29,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:29,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:29,422 INFO L124 PetriNetUnfolderBase]: 790/1601 cut-off events. [2024-06-28 02:47:29,422 INFO L125 PetriNetUnfolderBase]: For 40785/40788 co-relation queries the response was YES. [2024-06-28 02:47:29,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8004 conditions, 1601 events. 790/1601 cut-off events. For 40785/40788 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9559 event pairs, 248 based on Foata normal form. 24/1617 useless extension candidates. Maximal degree in co-relation 7910. Up to 1098 conditions per place. [2024-06-28 02:47:29,433 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 132 selfloop transitions, 35 changer transitions 0/174 dead transitions. [2024-06-28 02:47:29,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 174 transitions, 2203 flow [2024-06-28 02:47:29,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:47:29,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:47:29,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 02:47:29,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-28 02:47:29,434 INFO L175 Difference]: Start difference. First operand has 209 places, 146 transitions, 1757 flow. Second operand 9 states and 160 transitions. [2024-06-28 02:47:29,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 174 transitions, 2203 flow [2024-06-28 02:47:29,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 174 transitions, 2025 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 02:47:29,485 INFO L231 Difference]: Finished difference. Result has 209 places, 146 transitions, 1658 flow [2024-06-28 02:47:29,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1658, PETRI_PLACES=209, PETRI_TRANSITIONS=146} [2024-06-28 02:47:29,485 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 171 predicate places. [2024-06-28 02:47:29,485 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 146 transitions, 1658 flow [2024-06-28 02:47:29,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:29,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:29,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:29,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:47:29,486 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)] === [2024-06-28 02:47:29,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:29,486 INFO L85 PathProgramCache]: Analyzing trace with hash 909052314, now seen corresponding path program 1 times [2024-06-28 02:47:29,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:29,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650434098] [2024-06-28 02:47:29,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:29,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:29,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:29,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650434098] [2024-06-28 02:47:29,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650434098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:29,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:29,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:47:29,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035998797] [2024-06-28 02:47:29,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:29,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:47:29,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:29,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:47:29,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:47:29,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-28 02:47:29,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 146 transitions, 1658 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:29,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:29,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-28 02:47:29,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:29,737 INFO L124 PetriNetUnfolderBase]: 502/1217 cut-off events. [2024-06-28 02:47:29,737 INFO L125 PetriNetUnfolderBase]: For 14395/14398 co-relation queries the response was YES. [2024-06-28 02:47:29,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5360 conditions, 1217 events. 502/1217 cut-off events. For 14395/14398 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7989 event pairs, 141 based on Foata normal form. 16/1213 useless extension candidates. Maximal degree in co-relation 5266. Up to 276 conditions per place. [2024-06-28 02:47:29,746 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 54 selfloop transitions, 53 changer transitions 0/157 dead transitions. [2024-06-28 02:47:29,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 157 transitions, 1831 flow [2024-06-28 02:47:29,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:47:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:47:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-28 02:47:29,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6036036036036037 [2024-06-28 02:47:29,747 INFO L175 Difference]: Start difference. First operand has 209 places, 146 transitions, 1658 flow. Second operand 9 states and 201 transitions. [2024-06-28 02:47:29,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 157 transitions, 1831 flow [2024-06-28 02:47:29,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 157 transitions, 1726 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 02:47:29,787 INFO L231 Difference]: Finished difference. Result has 208 places, 132 transitions, 1544 flow [2024-06-28 02:47:29,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1424, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1544, PETRI_PLACES=208, PETRI_TRANSITIONS=132} [2024-06-28 02:47:29,787 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 170 predicate places. [2024-06-28 02:47:29,787 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 132 transitions, 1544 flow [2024-06-28 02:47:29,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:29,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:29,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:29,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:47:29,788 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)] === [2024-06-28 02:47:29,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:29,788 INFO L85 PathProgramCache]: Analyzing trace with hash 561908377, now seen corresponding path program 1 times [2024-06-28 02:47:29,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:29,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604152114] [2024-06-28 02:47:29,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:29,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:29,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:29,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:29,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604152114] [2024-06-28 02:47:29,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604152114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:29,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:29,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:29,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095471824] [2024-06-28 02:47:29,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:29,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:29,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:29,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:29,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:29,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:29,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 132 transitions, 1544 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:29,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:29,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:29,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:30,265 INFO L124 PetriNetUnfolderBase]: 710/1505 cut-off events. [2024-06-28 02:47:30,266 INFO L125 PetriNetUnfolderBase]: For 29119/29122 co-relation queries the response was YES. [2024-06-28 02:47:30,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7279 conditions, 1505 events. 710/1505 cut-off events. For 29119/29122 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9159 event pairs, 220 based on Foata normal form. 4/1501 useless extension candidates. Maximal degree in co-relation 7187. Up to 1062 conditions per place. [2024-06-28 02:47:30,276 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 133 selfloop transitions, 34 changer transitions 0/174 dead transitions. [2024-06-28 02:47:30,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 174 transitions, 2119 flow [2024-06-28 02:47:30,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:47:30,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:47:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 214 transitions. [2024-06-28 02:47:30,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44490644490644493 [2024-06-28 02:47:30,277 INFO L175 Difference]: Start difference. First operand has 208 places, 132 transitions, 1544 flow. Second operand 13 states and 214 transitions. [2024-06-28 02:47:30,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 174 transitions, 2119 flow [2024-06-28 02:47:30,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 174 transitions, 2040 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 02:47:30,319 INFO L231 Difference]: Finished difference. Result has 217 places, 136 transitions, 1594 flow [2024-06-28 02:47:30,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1594, PETRI_PLACES=217, PETRI_TRANSITIONS=136} [2024-06-28 02:47:30,319 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 179 predicate places. [2024-06-28 02:47:30,319 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 136 transitions, 1594 flow [2024-06-28 02:47:30,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:30,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:30,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:30,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:47:30,320 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)] === [2024-06-28 02:47:30,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:30,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1418568945, now seen corresponding path program 2 times [2024-06-28 02:47:30,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:30,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89412941] [2024-06-28 02:47:30,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:30,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:30,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:30,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:30,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89412941] [2024-06-28 02:47:30,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89412941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:30,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:30,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:30,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284531415] [2024-06-28 02:47:30,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:30,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:30,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:30,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:30,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:30,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:30,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 136 transitions, 1594 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:30,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:30,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:30,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:30,813 INFO L124 PetriNetUnfolderBase]: 778/1643 cut-off events. [2024-06-28 02:47:30,813 INFO L125 PetriNetUnfolderBase]: For 39545/39548 co-relation queries the response was YES. [2024-06-28 02:47:30,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8412 conditions, 1643 events. 778/1643 cut-off events. For 39545/39548 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10191 event pairs, 227 based on Foata normal form. 4/1639 useless extension candidates. Maximal degree in co-relation 8317. Up to 987 conditions per place. [2024-06-28 02:47:30,825 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 148 selfloop transitions, 40 changer transitions 0/195 dead transitions. [2024-06-28 02:47:30,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 195 transitions, 2500 flow [2024-06-28 02:47:30,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-28 02:47:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-28 02:47:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 267 transitions. [2024-06-28 02:47:30,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4510135135135135 [2024-06-28 02:47:30,826 INFO L175 Difference]: Start difference. First operand has 217 places, 136 transitions, 1594 flow. Second operand 16 states and 267 transitions. [2024-06-28 02:47:30,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 195 transitions, 2500 flow [2024-06-28 02:47:30,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 195 transitions, 2417 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 02:47:30,884 INFO L231 Difference]: Finished difference. Result has 231 places, 143 transitions, 1712 flow [2024-06-28 02:47:30,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1712, PETRI_PLACES=231, PETRI_TRANSITIONS=143} [2024-06-28 02:47:30,885 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 193 predicate places. [2024-06-28 02:47:30,885 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 143 transitions, 1712 flow [2024-06-28 02:47:30,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:30,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:30,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:30,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:47:30,886 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)] === [2024-06-28 02:47:30,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:30,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1763750101, now seen corresponding path program 3 times [2024-06-28 02:47:30,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:30,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868704286] [2024-06-28 02:47:30,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:30,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:31,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:31,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868704286] [2024-06-28 02:47:31,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868704286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:31,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:31,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:31,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212432656] [2024-06-28 02:47:31,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:31,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:31,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:31,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:31,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:31,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:31,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 143 transitions, 1712 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:31,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:31,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:31,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:31,419 INFO L124 PetriNetUnfolderBase]: 780/1653 cut-off events. [2024-06-28 02:47:31,419 INFO L125 PetriNetUnfolderBase]: For 41625/41628 co-relation queries the response was YES. [2024-06-28 02:47:31,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8581 conditions, 1653 events. 780/1653 cut-off events. For 41625/41628 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10291 event pairs, 233 based on Foata normal form. 4/1649 useless extension candidates. Maximal degree in co-relation 8482. Up to 987 conditions per place. [2024-06-28 02:47:31,430 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 141 selfloop transitions, 39 changer transitions 0/187 dead transitions. [2024-06-28 02:47:31,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 187 transitions, 2372 flow [2024-06-28 02:47:31,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:47:31,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:47:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 222 transitions. [2024-06-28 02:47:31,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2024-06-28 02:47:31,432 INFO L175 Difference]: Start difference. First operand has 231 places, 143 transitions, 1712 flow. Second operand 13 states and 222 transitions. [2024-06-28 02:47:31,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 187 transitions, 2372 flow [2024-06-28 02:47:31,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 187 transitions, 2267 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 02:47:31,498 INFO L231 Difference]: Finished difference. Result has 239 places, 146 transitions, 1732 flow [2024-06-28 02:47:31,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1732, PETRI_PLACES=239, PETRI_TRANSITIONS=146} [2024-06-28 02:47:31,499 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 201 predicate places. [2024-06-28 02:47:31,499 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 146 transitions, 1732 flow [2024-06-28 02:47:31,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:31,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:31,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:31,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:47:31,500 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)] === [2024-06-28 02:47:31,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:31,500 INFO L85 PathProgramCache]: Analyzing trace with hash -524168713, now seen corresponding path program 4 times [2024-06-28 02:47:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:31,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599024385] [2024-06-28 02:47:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:31,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:31,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599024385] [2024-06-28 02:47:31,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599024385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:31,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:31,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:31,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528903182] [2024-06-28 02:47:31,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:31,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:31,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:31,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:31,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:31,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:31,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 146 transitions, 1732 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:31,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:31,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:31,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:32,011 INFO L124 PetriNetUnfolderBase]: 774/1643 cut-off events. [2024-06-28 02:47:32,011 INFO L125 PetriNetUnfolderBase]: For 41315/41318 co-relation queries the response was YES. [2024-06-28 02:47:32,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8470 conditions, 1643 events. 774/1643 cut-off events. For 41315/41318 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10220 event pairs, 230 based on Foata normal form. 4/1639 useless extension candidates. Maximal degree in co-relation 8369. Up to 987 conditions per place. [2024-06-28 02:47:32,023 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 146 selfloop transitions, 40 changer transitions 0/193 dead transitions. [2024-06-28 02:47:32,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 193 transitions, 2404 flow [2024-06-28 02:47:32,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 02:47:32,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 02:47:32,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 251 transitions. [2024-06-28 02:47:32,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45225225225225224 [2024-06-28 02:47:32,025 INFO L175 Difference]: Start difference. First operand has 239 places, 146 transitions, 1732 flow. Second operand 15 states and 251 transitions. [2024-06-28 02:47:32,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 193 transitions, 2404 flow [2024-06-28 02:47:32,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 193 transitions, 2314 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 02:47:32,122 INFO L231 Difference]: Finished difference. Result has 246 places, 146 transitions, 1726 flow [2024-06-28 02:47:32,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1726, PETRI_PLACES=246, PETRI_TRANSITIONS=146} [2024-06-28 02:47:32,123 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 208 predicate places. [2024-06-28 02:47:32,123 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 146 transitions, 1726 flow [2024-06-28 02:47:32,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:32,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:32,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:32,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:47:32,124 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)] === [2024-06-28 02:47:32,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:32,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1462968243, now seen corresponding path program 5 times [2024-06-28 02:47:32,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:32,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953056657] [2024-06-28 02:47:32,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:32,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:32,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:32,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953056657] [2024-06-28 02:47:32,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953056657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:32,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:32,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:47:32,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750333709] [2024-06-28 02:47:32,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:32,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:47:32,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:32,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:47:32,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:47:32,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:32,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 146 transitions, 1726 flow. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:32,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:32,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:32,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:32,515 INFO L124 PetriNetUnfolderBase]: 776/1650 cut-off events. [2024-06-28 02:47:32,516 INFO L125 PetriNetUnfolderBase]: For 43694/43697 co-relation queries the response was YES. [2024-06-28 02:47:32,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8501 conditions, 1650 events. 776/1650 cut-off events. For 43694/43697 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10305 event pairs, 183 based on Foata normal form. 4/1644 useless extension candidates. Maximal degree in co-relation 8399. Up to 513 conditions per place. [2024-06-28 02:47:32,527 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 128 selfloop transitions, 50 changer transitions 0/185 dead transitions. [2024-06-28 02:47:32,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 185 transitions, 2430 flow [2024-06-28 02:47:32,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:47:32,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:47:32,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-28 02:47:32,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-28 02:47:32,528 INFO L175 Difference]: Start difference. First operand has 246 places, 146 transitions, 1726 flow. Second operand 12 states and 205 transitions. [2024-06-28 02:47:32,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 185 transitions, 2430 flow [2024-06-28 02:47:32,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 185 transitions, 2342 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 02:47:32,607 INFO L231 Difference]: Finished difference. Result has 247 places, 147 transitions, 1770 flow [2024-06-28 02:47:32,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1770, PETRI_PLACES=247, PETRI_TRANSITIONS=147} [2024-06-28 02:47:32,608 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 209 predicate places. [2024-06-28 02:47:32,608 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 147 transitions, 1770 flow [2024-06-28 02:47:32,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:32,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:32,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:32,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:47:32,608 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)] === [2024-06-28 02:47:32,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:32,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1029384493, now seen corresponding path program 6 times [2024-06-28 02:47:32,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:32,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128656453] [2024-06-28 02:47:32,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:32,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:32,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:32,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:32,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128656453] [2024-06-28 02:47:32,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128656453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:32,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:32,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:32,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577368237] [2024-06-28 02:47:32,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:32,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:32,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:32,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:32,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 147 transitions, 1770 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:32,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:32,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:32,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:33,160 INFO L124 PetriNetUnfolderBase]: 836/1781 cut-off events. [2024-06-28 02:47:33,160 INFO L125 PetriNetUnfolderBase]: For 49029/49032 co-relation queries the response was YES. [2024-06-28 02:47:33,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9299 conditions, 1781 events. 836/1781 cut-off events. For 49029/49032 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11406 event pairs, 224 based on Foata normal form. 4/1775 useless extension candidates. Maximal degree in co-relation 9198. Up to 725 conditions per place. [2024-06-28 02:47:33,172 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 141 selfloop transitions, 63 changer transitions 0/211 dead transitions. [2024-06-28 02:47:33,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 211 transitions, 2854 flow [2024-06-28 02:47:33,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-28 02:47:33,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-28 02:47:33,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 279 transitions. [2024-06-28 02:47:33,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435612082670906 [2024-06-28 02:47:33,174 INFO L175 Difference]: Start difference. First operand has 247 places, 147 transitions, 1770 flow. Second operand 17 states and 279 transitions. [2024-06-28 02:47:33,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 211 transitions, 2854 flow [2024-06-28 02:47:33,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 211 transitions, 2706 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 02:47:33,255 INFO L231 Difference]: Finished difference. Result has 258 places, 156 transitions, 1894 flow [2024-06-28 02:47:33,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1894, PETRI_PLACES=258, PETRI_TRANSITIONS=156} [2024-06-28 02:47:33,255 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 220 predicate places. [2024-06-28 02:47:33,256 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 156 transitions, 1894 flow [2024-06-28 02:47:33,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:33,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:33,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:33,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:47:33,256 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)] === [2024-06-28 02:47:33,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1750249677, now seen corresponding path program 7 times [2024-06-28 02:47:33,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:33,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512562541] [2024-06-28 02:47:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:33,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:33,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:33,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:33,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512562541] [2024-06-28 02:47:33,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512562541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:33,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:33,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:33,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406658192] [2024-06-28 02:47:33,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:33,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:33,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:33,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:33,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:33,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:33,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 156 transitions, 1894 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:33,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:33,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:33,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:33,825 INFO L124 PetriNetUnfolderBase]: 859/1830 cut-off events. [2024-06-28 02:47:33,825 INFO L125 PetriNetUnfolderBase]: For 55867/55870 co-relation queries the response was YES. [2024-06-28 02:47:33,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9818 conditions, 1830 events. 859/1830 cut-off events. For 55867/55870 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11788 event pairs, 237 based on Foata normal form. 4/1824 useless extension candidates. Maximal degree in co-relation 9718. Up to 821 conditions per place. [2024-06-28 02:47:33,839 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 133 selfloop transitions, 70 changer transitions 0/210 dead transitions. [2024-06-28 02:47:33,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 210 transitions, 2759 flow [2024-06-28 02:47:33,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 02:47:33,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 02:47:33,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 241 transitions. [2024-06-28 02:47:33,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46525096525096526 [2024-06-28 02:47:33,840 INFO L175 Difference]: Start difference. First operand has 258 places, 156 transitions, 1894 flow. Second operand 14 states and 241 transitions. [2024-06-28 02:47:33,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 210 transitions, 2759 flow [2024-06-28 02:47:33,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 210 transitions, 2586 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 02:47:33,926 INFO L231 Difference]: Finished difference. Result has 264 places, 161 transitions, 1936 flow [2024-06-28 02:47:33,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1741, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1936, PETRI_PLACES=264, PETRI_TRANSITIONS=161} [2024-06-28 02:47:33,927 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 226 predicate places. [2024-06-28 02:47:33,927 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 161 transitions, 1936 flow [2024-06-28 02:47:33,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:33,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:33,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:33,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:47:33,927 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)] === [2024-06-28 02:47:33,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:33,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1474316801, now seen corresponding path program 8 times [2024-06-28 02:47:33,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:33,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657564446] [2024-06-28 02:47:33,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:33,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:34,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:34,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657564446] [2024-06-28 02:47:34,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657564446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:34,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:34,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:34,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479267509] [2024-06-28 02:47:34,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:34,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:34,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:34,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:34,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:34,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:34,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 161 transitions, 1936 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:34,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:34,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:34,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:34,482 INFO L124 PetriNetUnfolderBase]: 868/1851 cut-off events. [2024-06-28 02:47:34,482 INFO L125 PetriNetUnfolderBase]: For 59397/59400 co-relation queries the response was YES. [2024-06-28 02:47:34,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9866 conditions, 1851 events. 868/1851 cut-off events. For 59397/59400 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11972 event pairs, 238 based on Foata normal form. 4/1845 useless extension candidates. Maximal degree in co-relation 9770. Up to 725 conditions per place. [2024-06-28 02:47:34,497 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 154 selfloop transitions, 62 changer transitions 0/223 dead transitions. [2024-06-28 02:47:34,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 223 transitions, 2991 flow [2024-06-28 02:47:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-28 02:47:34,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-28 02:47:34,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 289 transitions. [2024-06-28 02:47:34,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 02:47:34,498 INFO L175 Difference]: Start difference. First operand has 264 places, 161 transitions, 1936 flow. Second operand 17 states and 289 transitions. [2024-06-28 02:47:34,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 223 transitions, 2991 flow [2024-06-28 02:47:34,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 223 transitions, 2902 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:47:34,603 INFO L231 Difference]: Finished difference. Result has 277 places, 164 transitions, 2018 flow [2024-06-28 02:47:34,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2018, PETRI_PLACES=277, PETRI_TRANSITIONS=164} [2024-06-28 02:47:34,604 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 239 predicate places. [2024-06-28 02:47:34,604 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 164 transitions, 2018 flow [2024-06-28 02:47:34,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:34,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:34,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:34,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:47:34,605 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)] === [2024-06-28 02:47:34,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:34,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1922144921, now seen corresponding path program 9 times [2024-06-28 02:47:34,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:34,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663987676] [2024-06-28 02:47:34,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:34,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:34,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:34,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:34,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663987676] [2024-06-28 02:47:34,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663987676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:34,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:34,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:34,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940519907] [2024-06-28 02:47:34,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:34,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:34,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:34,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:34,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:34,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:34,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 164 transitions, 2018 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:34,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:34,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:34,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:35,150 INFO L124 PetriNetUnfolderBase]: 870/1863 cut-off events. [2024-06-28 02:47:35,151 INFO L125 PetriNetUnfolderBase]: For 62574/62577 co-relation queries the response was YES. [2024-06-28 02:47:35,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9991 conditions, 1863 events. 870/1863 cut-off events. For 62574/62577 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12075 event pairs, 235 based on Foata normal form. 4/1857 useless extension candidates. Maximal degree in co-relation 9893. Up to 860 conditions per place. [2024-06-28 02:47:35,165 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 137 selfloop transitions, 72 changer transitions 0/216 dead transitions. [2024-06-28 02:47:35,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 216 transitions, 2850 flow [2024-06-28 02:47:35,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-28 02:47:35,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-28 02:47:35,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 265 transitions. [2024-06-28 02:47:35,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44763513513513514 [2024-06-28 02:47:35,166 INFO L175 Difference]: Start difference. First operand has 277 places, 164 transitions, 2018 flow. Second operand 16 states and 265 transitions. [2024-06-28 02:47:35,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 216 transitions, 2850 flow [2024-06-28 02:47:35,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 216 transitions, 2731 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 02:47:35,309 INFO L231 Difference]: Finished difference. Result has 284 places, 164 transitions, 2047 flow [2024-06-28 02:47:35,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1899, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2047, PETRI_PLACES=284, PETRI_TRANSITIONS=164} [2024-06-28 02:47:35,310 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 246 predicate places. [2024-06-28 02:47:35,310 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 164 transitions, 2047 flow [2024-06-28 02:47:35,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:35,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:35,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:35,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:47:35,311 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)] === [2024-06-28 02:47:35,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:35,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1146880131, now seen corresponding path program 10 times [2024-06-28 02:47:35,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:35,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175808337] [2024-06-28 02:47:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:35,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:35,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:35,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175808337] [2024-06-28 02:47:35,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175808337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:35,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:35,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:35,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826398951] [2024-06-28 02:47:35,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:35,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:35,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:35,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:35,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:35,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:35,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 164 transitions, 2047 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:35,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:35,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:35,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:35,860 INFO L124 PetriNetUnfolderBase]: 864/1851 cut-off events. [2024-06-28 02:47:35,860 INFO L125 PetriNetUnfolderBase]: For 61966/61969 co-relation queries the response was YES. [2024-06-28 02:47:35,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9905 conditions, 1851 events. 864/1851 cut-off events. For 61966/61969 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11949 event pairs, 245 based on Foata normal form. 4/1845 useless extension candidates. Maximal degree in co-relation 9806. Up to 725 conditions per place. [2024-06-28 02:47:35,874 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 147 selfloop transitions, 61 changer transitions 0/215 dead transitions. [2024-06-28 02:47:35,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 215 transitions, 2883 flow [2024-06-28 02:47:35,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 02:47:35,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 02:47:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 258 transitions. [2024-06-28 02:47:35,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-28 02:47:35,875 INFO L175 Difference]: Start difference. First operand has 284 places, 164 transitions, 2047 flow. Second operand 15 states and 258 transitions. [2024-06-28 02:47:35,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 215 transitions, 2883 flow [2024-06-28 02:47:35,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 215 transitions, 2688 flow, removed 15 selfloop flow, removed 13 redundant places. [2024-06-28 02:47:35,986 INFO L231 Difference]: Finished difference. Result has 286 places, 164 transitions, 1978 flow [2024-06-28 02:47:35,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1978, PETRI_PLACES=286, PETRI_TRANSITIONS=164} [2024-06-28 02:47:35,986 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 248 predicate places. [2024-06-28 02:47:35,986 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 164 transitions, 1978 flow [2024-06-28 02:47:35,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:35,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:35,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:35,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:47:35,987 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)] === [2024-06-28 02:47:35,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1967941565, now seen corresponding path program 11 times [2024-06-28 02:47:35,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:35,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045439633] [2024-06-28 02:47:35,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:35,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:35,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:36,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:36,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045439633] [2024-06-28 02:47:36,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045439633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:36,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:36,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:47:36,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017115523] [2024-06-28 02:47:36,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:36,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:47:36,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:36,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:47:36,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:47:36,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:36,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 164 transitions, 1978 flow. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:36,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:36,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:36,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:36,466 INFO L124 PetriNetUnfolderBase]: 858/1841 cut-off events. [2024-06-28 02:47:36,466 INFO L125 PetriNetUnfolderBase]: For 61882/61885 co-relation queries the response was YES. [2024-06-28 02:47:36,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9631 conditions, 1841 events. 858/1841 cut-off events. For 61882/61885 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11869 event pairs, 342 based on Foata normal form. 4/1837 useless extension candidates. Maximal degree in co-relation 9532. Up to 1322 conditions per place. [2024-06-28 02:47:36,479 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 150 selfloop transitions, 37 changer transitions 0/194 dead transitions. [2024-06-28 02:47:36,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 194 transitions, 2540 flow [2024-06-28 02:47:36,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:47:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:47:36,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 02:47:36,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 02:47:36,480 INFO L175 Difference]: Start difference. First operand has 286 places, 164 transitions, 1978 flow. Second operand 10 states and 175 transitions. [2024-06-28 02:47:36,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 194 transitions, 2540 flow [2024-06-28 02:47:36,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 194 transitions, 2388 flow, removed 8 selfloop flow, removed 15 redundant places. [2024-06-28 02:47:36,596 INFO L231 Difference]: Finished difference. Result has 281 places, 164 transitions, 1906 flow [2024-06-28 02:47:36,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1906, PETRI_PLACES=281, PETRI_TRANSITIONS=164} [2024-06-28 02:47:36,597 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 243 predicate places. [2024-06-28 02:47:36,597 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 164 transitions, 1906 flow [2024-06-28 02:47:36,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:36,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:36,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:36,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:47:36,597 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)] === [2024-06-28 02:47:36,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:36,597 INFO L85 PathProgramCache]: Analyzing trace with hash -227383645, now seen corresponding path program 1 times [2024-06-28 02:47:36,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:36,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398078837] [2024-06-28 02:47:36,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:36,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:36,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:36,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:36,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398078837] [2024-06-28 02:47:36,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398078837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:36,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:36,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:36,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698450820] [2024-06-28 02:47:36,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:36,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:36,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:36,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:36,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:36,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:36,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 164 transitions, 1906 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:36,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:36,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:36,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:37,108 INFO L124 PetriNetUnfolderBase]: 874/1877 cut-off events. [2024-06-28 02:47:37,109 INFO L125 PetriNetUnfolderBase]: For 68046/68049 co-relation queries the response was YES. [2024-06-28 02:47:37,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9840 conditions, 1877 events. 874/1877 cut-off events. For 68046/68049 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12159 event pairs, 362 based on Foata normal form. 4/1873 useless extension candidates. Maximal degree in co-relation 9743. Up to 1434 conditions per place. [2024-06-28 02:47:37,122 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 162 selfloop transitions, 33 changer transitions 0/202 dead transitions. [2024-06-28 02:47:37,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 202 transitions, 2529 flow [2024-06-28 02:47:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:47:37,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:47:37,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 215 transitions. [2024-06-28 02:47:37,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446985446985447 [2024-06-28 02:47:37,123 INFO L175 Difference]: Start difference. First operand has 281 places, 164 transitions, 1906 flow. Second operand 13 states and 215 transitions. [2024-06-28 02:47:37,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 202 transitions, 2529 flow [2024-06-28 02:47:37,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 202 transitions, 2405 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:47:37,264 INFO L231 Difference]: Finished difference. Result has 283 places, 165 transitions, 1863 flow [2024-06-28 02:47:37,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1863, PETRI_PLACES=283, PETRI_TRANSITIONS=165} [2024-06-28 02:47:37,264 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 245 predicate places. [2024-06-28 02:47:37,264 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 165 transitions, 1863 flow [2024-06-28 02:47:37,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:37,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:37,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:37,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:47:37,265 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:37,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:37,265 INFO L85 PathProgramCache]: Analyzing trace with hash -2126663337, now seen corresponding path program 2 times [2024-06-28 02:47:37,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:37,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658897790] [2024-06-28 02:47:37,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:37,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:37,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:37,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658897790] [2024-06-28 02:47:37,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658897790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:37,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:37,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:37,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693590222] [2024-06-28 02:47:37,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:37,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:37,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:37,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:37,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:37,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:37,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 165 transitions, 1863 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:37,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:37,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:37,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:37,865 INFO L124 PetriNetUnfolderBase]: 912/1959 cut-off events. [2024-06-28 02:47:37,865 INFO L125 PetriNetUnfolderBase]: For 82260/82263 co-relation queries the response was YES. [2024-06-28 02:47:37,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10564 conditions, 1959 events. 912/1959 cut-off events. For 82260/82263 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12808 event pairs, 356 based on Foata normal form. 4/1955 useless extension candidates. Maximal degree in co-relation 10468. Up to 1327 conditions per place. [2024-06-28 02:47:37,879 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 178 selfloop transitions, 40 changer transitions 0/225 dead transitions. [2024-06-28 02:47:37,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 225 transitions, 2891 flow [2024-06-28 02:47:37,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-28 02:47:37,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-28 02:47:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 307 transitions. [2024-06-28 02:47:37,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366998577524893 [2024-06-28 02:47:37,890 INFO L175 Difference]: Start difference. First operand has 283 places, 165 transitions, 1863 flow. Second operand 19 states and 307 transitions. [2024-06-28 02:47:37,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 225 transitions, 2891 flow [2024-06-28 02:47:38,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 225 transitions, 2822 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:47:38,024 INFO L231 Difference]: Finished difference. Result has 294 places, 169 transitions, 1939 flow [2024-06-28 02:47:38,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1939, PETRI_PLACES=294, PETRI_TRANSITIONS=169} [2024-06-28 02:47:38,025 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 256 predicate places. [2024-06-28 02:47:38,025 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 169 transitions, 1939 flow [2024-06-28 02:47:38,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:38,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:38,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:38,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:47:38,025 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:38,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:38,025 INFO L85 PathProgramCache]: Analyzing trace with hash 846002391, now seen corresponding path program 3 times [2024-06-28 02:47:38,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:38,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077373842] [2024-06-28 02:47:38,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:38,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:38,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:38,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:38,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077373842] [2024-06-28 02:47:38,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077373842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:38,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:38,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:38,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127330236] [2024-06-28 02:47:38,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:38,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:38,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:38,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:38,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:38,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:38,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 169 transitions, 1939 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:38,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:38,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:38,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:38,632 INFO L124 PetriNetUnfolderBase]: 928/1995 cut-off events. [2024-06-28 02:47:38,633 INFO L125 PetriNetUnfolderBase]: For 90243/90246 co-relation queries the response was YES. [2024-06-28 02:47:38,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11023 conditions, 1995 events. 928/1995 cut-off events. For 90243/90246 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13124 event pairs, 365 based on Foata normal form. 4/1991 useless extension candidates. Maximal degree in co-relation 10924. Up to 1327 conditions per place. [2024-06-28 02:47:38,646 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 170 selfloop transitions, 42 changer transitions 0/219 dead transitions. [2024-06-28 02:47:38,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 219 transitions, 2833 flow [2024-06-28 02:47:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-28 02:47:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-28 02:47:38,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 274 transitions. [2024-06-28 02:47:38,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356120826709062 [2024-06-28 02:47:38,647 INFO L175 Difference]: Start difference. First operand has 294 places, 169 transitions, 1939 flow. Second operand 17 states and 274 transitions. [2024-06-28 02:47:38,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 219 transitions, 2833 flow [2024-06-28 02:47:38,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 219 transitions, 2726 flow, removed 24 selfloop flow, removed 12 redundant places. [2024-06-28 02:47:38,795 INFO L231 Difference]: Finished difference. Result has 300 places, 172 transitions, 1980 flow [2024-06-28 02:47:38,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1846, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1980, PETRI_PLACES=300, PETRI_TRANSITIONS=172} [2024-06-28 02:47:38,796 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 262 predicate places. [2024-06-28 02:47:38,796 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 172 transitions, 1980 flow [2024-06-28 02:47:38,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:38,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:38,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:38,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:47:38,797 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:38,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:38,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1323263037, now seen corresponding path program 4 times [2024-06-28 02:47:38,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:38,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267534497] [2024-06-28 02:47:38,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:38,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:38,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:38,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:38,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267534497] [2024-06-28 02:47:38,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267534497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:38,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:38,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:38,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796150649] [2024-06-28 02:47:38,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:38,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:38,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:38,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:38,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:38,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:38,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 172 transitions, 1980 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:38,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:38,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:38,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:39,454 INFO L124 PetriNetUnfolderBase]: 922/1985 cut-off events. [2024-06-28 02:47:39,454 INFO L125 PetriNetUnfolderBase]: For 89727/89730 co-relation queries the response was YES. [2024-06-28 02:47:39,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10887 conditions, 1985 events. 922/1985 cut-off events. For 89727/89730 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13012 event pairs, 362 based on Foata normal form. 4/1981 useless extension candidates. Maximal degree in co-relation 10785. Up to 1327 conditions per place. [2024-06-28 02:47:39,469 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 175 selfloop transitions, 42 changer transitions 0/224 dead transitions. [2024-06-28 02:47:39,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 224 transitions, 2768 flow [2024-06-28 02:47:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-28 02:47:39,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-28 02:47:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 302 transitions. [2024-06-28 02:47:39,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4295874822190612 [2024-06-28 02:47:39,470 INFO L175 Difference]: Start difference. First operand has 300 places, 172 transitions, 1980 flow. Second operand 19 states and 302 transitions. [2024-06-28 02:47:39,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 224 transitions, 2768 flow [2024-06-28 02:47:39,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 224 transitions, 2669 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-28 02:47:39,645 INFO L231 Difference]: Finished difference. Result has 306 places, 172 transitions, 1969 flow [2024-06-28 02:47:39,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1969, PETRI_PLACES=306, PETRI_TRANSITIONS=172} [2024-06-28 02:47:39,645 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 268 predicate places. [2024-06-28 02:47:39,645 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 172 transitions, 1969 flow [2024-06-28 02:47:39,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:39,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:39,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:39,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:47:39,646 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:39,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:39,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1281357829, now seen corresponding path program 5 times [2024-06-28 02:47:39,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:39,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919941047] [2024-06-28 02:47:39,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:39,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:39,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:39,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919941047] [2024-06-28 02:47:39,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919941047] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:39,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:39,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:39,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122276435] [2024-06-28 02:47:39,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:39,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:39,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:39,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:39,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:39,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:39,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 172 transitions, 1969 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:39,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:39,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:39,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:40,191 INFO L124 PetriNetUnfolderBase]: 945/2034 cut-off events. [2024-06-28 02:47:40,191 INFO L125 PetriNetUnfolderBase]: For 100291/100294 co-relation queries the response was YES. [2024-06-28 02:47:40,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11416 conditions, 2034 events. 945/2034 cut-off events. For 100291/100294 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13434 event pairs, 325 based on Foata normal form. 4/2030 useless extension candidates. Maximal degree in co-relation 11313. Up to 1224 conditions per place. [2024-06-28 02:47:40,212 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 156 selfloop transitions, 56 changer transitions 0/219 dead transitions. [2024-06-28 02:47:40,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 219 transitions, 2862 flow [2024-06-28 02:47:40,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-28 02:47:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-28 02:47:40,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 258 transitions. [2024-06-28 02:47:40,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358108108108108 [2024-06-28 02:47:40,217 INFO L175 Difference]: Start difference. First operand has 306 places, 172 transitions, 1969 flow. Second operand 16 states and 258 transitions. [2024-06-28 02:47:40,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 219 transitions, 2862 flow [2024-06-28 02:47:40,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 219 transitions, 2783 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-28 02:47:40,388 INFO L231 Difference]: Finished difference. Result has 308 places, 175 transitions, 2059 flow [2024-06-28 02:47:40,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2059, PETRI_PLACES=308, PETRI_TRANSITIONS=175} [2024-06-28 02:47:40,389 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 270 predicate places. [2024-06-28 02:47:40,389 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 175 transitions, 2059 flow [2024-06-28 02:47:40,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:40,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:40,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:40,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:47:40,389 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:40,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:40,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1379465217, now seen corresponding path program 6 times [2024-06-28 02:47:40,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:40,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15016328] [2024-06-28 02:47:40,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:40,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:40,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:40,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15016328] [2024-06-28 02:47:40,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15016328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:40,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:40,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:47:40,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011867118] [2024-06-28 02:47:40,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:40,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:47:40,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:40,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:47:40,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:47:40,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:40,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 175 transitions, 2059 flow. Second operand has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:40,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:40,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:40,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:40,851 INFO L124 PetriNetUnfolderBase]: 939/2022 cut-off events. [2024-06-28 02:47:40,851 INFO L125 PetriNetUnfolderBase]: For 99691/99694 co-relation queries the response was YES. [2024-06-28 02:47:40,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11337 conditions, 2022 events. 939/2022 cut-off events. For 99691/99694 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13346 event pairs, 277 based on Foata normal form. 4/2018 useless extension candidates. Maximal degree in co-relation 11233. Up to 885 conditions per place. [2024-06-28 02:47:40,867 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 155 selfloop transitions, 54 changer transitions 0/216 dead transitions. [2024-06-28 02:47:40,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 216 transitions, 2917 flow [2024-06-28 02:47:40,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:47:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:47:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-28 02:47:40,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 02:47:40,873 INFO L175 Difference]: Start difference. First operand has 308 places, 175 transitions, 2059 flow. Second operand 12 states and 208 transitions. [2024-06-28 02:47:40,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 216 transitions, 2917 flow [2024-06-28 02:47:41,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 216 transitions, 2755 flow, removed 29 selfloop flow, removed 15 redundant places. [2024-06-28 02:47:41,123 INFO L231 Difference]: Finished difference. Result has 306 places, 176 transitions, 2047 flow [2024-06-28 02:47:41,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2047, PETRI_PLACES=306, PETRI_TRANSITIONS=176} [2024-06-28 02:47:41,124 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 268 predicate places. [2024-06-28 02:47:41,124 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 176 transitions, 2047 flow [2024-06-28 02:47:41,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.9) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:41,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:41,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:41,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:47:41,125 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:41,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:41,125 INFO L85 PathProgramCache]: Analyzing trace with hash -441061377, now seen corresponding path program 7 times [2024-06-28 02:47:41,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:41,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339041078] [2024-06-28 02:47:41,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:41,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:41,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:41,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339041078] [2024-06-28 02:47:41,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339041078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:41,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:41,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:41,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282816698] [2024-06-28 02:47:41,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:41,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:41,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:41,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:41,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:41,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:41,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 176 transitions, 2047 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:41,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:41,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:41,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:41,731 INFO L124 PetriNetUnfolderBase]: 947/2040 cut-off events. [2024-06-28 02:47:41,731 INFO L125 PetriNetUnfolderBase]: For 103822/103825 co-relation queries the response was YES. [2024-06-28 02:47:41,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11424 conditions, 2040 events. 947/2040 cut-off events. For 103822/103825 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13489 event pairs, 324 based on Foata normal form. 4/2036 useless extension candidates. Maximal degree in co-relation 11321. Up to 1172 conditions per place. [2024-06-28 02:47:41,749 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 164 selfloop transitions, 56 changer transitions 0/227 dead transitions. [2024-06-28 02:47:41,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 227 transitions, 3058 flow [2024-06-28 02:47:41,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-06-28 02:47:41,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-06-28 02:47:41,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 275 transitions. [2024-06-28 02:47:41,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43720190779014306 [2024-06-28 02:47:41,750 INFO L175 Difference]: Start difference. First operand has 306 places, 176 transitions, 2047 flow. Second operand 17 states and 275 transitions. [2024-06-28 02:47:41,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 227 transitions, 3058 flow [2024-06-28 02:47:41,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 227 transitions, 2954 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 02:47:41,951 INFO L231 Difference]: Finished difference. Result has 315 places, 178 transitions, 2099 flow [2024-06-28 02:47:41,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1949, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2099, PETRI_PLACES=315, PETRI_TRANSITIONS=178} [2024-06-28 02:47:41,952 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 277 predicate places. [2024-06-28 02:47:41,952 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 178 transitions, 2099 flow [2024-06-28 02:47:41,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:41,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:41,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:41,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:47:41,953 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:41,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:41,953 INFO L85 PathProgramCache]: Analyzing trace with hash 745038081, now seen corresponding path program 8 times [2024-06-28 02:47:41,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:41,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005408520] [2024-06-28 02:47:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:41,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:42,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:42,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:42,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005408520] [2024-06-28 02:47:42,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005408520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:42,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:42,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:42,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069833317] [2024-06-28 02:47:42,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:42,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:42,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:42,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:42,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:42,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:42,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 178 transitions, 2099 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:42,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:42,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:42,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:42,589 INFO L124 PetriNetUnfolderBase]: 963/2076 cut-off events. [2024-06-28 02:47:42,589 INFO L125 PetriNetUnfolderBase]: For 112737/112740 co-relation queries the response was YES. [2024-06-28 02:47:42,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11887 conditions, 2076 events. 963/2076 cut-off events. For 112737/112740 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13799 event pairs, 325 based on Foata normal form. 4/2072 useless extension candidates. Maximal degree in co-relation 11782. Up to 1172 conditions per place. [2024-06-28 02:47:42,603 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 177 selfloop transitions, 56 changer transitions 0/240 dead transitions. [2024-06-28 02:47:42,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 240 transitions, 3179 flow [2024-06-28 02:47:42,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-06-28 02:47:42,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-06-28 02:47:42,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 334 transitions. [2024-06-28 02:47:42,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42985842985842987 [2024-06-28 02:47:42,604 INFO L175 Difference]: Start difference. First operand has 315 places, 178 transitions, 2099 flow. Second operand 21 states and 334 transitions. [2024-06-28 02:47:42,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 240 transitions, 3179 flow [2024-06-28 02:47:42,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 240 transitions, 3019 flow, removed 14 selfloop flow, removed 14 redundant places. [2024-06-28 02:47:42,817 INFO L231 Difference]: Finished difference. Result has 323 places, 180 transitions, 2091 flow [2024-06-28 02:47:42,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2091, PETRI_PLACES=323, PETRI_TRANSITIONS=180} [2024-06-28 02:47:42,817 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 285 predicate places. [2024-06-28 02:47:42,817 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 180 transitions, 2091 flow [2024-06-28 02:47:42,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:42,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:42,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:42,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:47:42,818 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:42,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:42,818 INFO L85 PathProgramCache]: Analyzing trace with hash -510608061, now seen corresponding path program 9 times [2024-06-28 02:47:42,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:42,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885299089] [2024-06-28 02:47:42,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:42,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:42,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:42,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:42,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885299089] [2024-06-28 02:47:42,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885299089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:42,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:42,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:42,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96155144] [2024-06-28 02:47:42,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:42,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:42,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:42,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:43,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:43,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 180 transitions, 2091 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:43,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:43,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:43,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:43,379 INFO L124 PetriNetUnfolderBase]: 972/2099 cut-off events. [2024-06-28 02:47:43,380 INFO L125 PetriNetUnfolderBase]: For 119311/119314 co-relation queries the response was YES. [2024-06-28 02:47:43,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12037 conditions, 2099 events. 972/2099 cut-off events. For 119311/119314 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 14007 event pairs, 330 based on Foata normal form. 4/2095 useless extension candidates. Maximal degree in co-relation 11932. Up to 1287 conditions per place. [2024-06-28 02:47:43,396 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 158 selfloop transitions, 59 changer transitions 0/224 dead transitions. [2024-06-28 02:47:43,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 224 transitions, 2879 flow [2024-06-28 02:47:43,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-28 02:47:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-28 02:47:43,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 257 transitions. [2024-06-28 02:47:43,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341216216216216 [2024-06-28 02:47:43,397 INFO L175 Difference]: Start difference. First operand has 323 places, 180 transitions, 2091 flow. Second operand 16 states and 257 transitions. [2024-06-28 02:47:43,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 224 transitions, 2879 flow [2024-06-28 02:47:43,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 224 transitions, 2731 flow, removed 7 selfloop flow, removed 19 redundant places. [2024-06-28 02:47:43,605 INFO L231 Difference]: Finished difference. Result has 320 places, 181 transitions, 2081 flow [2024-06-28 02:47:43,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1943, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2081, PETRI_PLACES=320, PETRI_TRANSITIONS=181} [2024-06-28 02:47:43,606 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 282 predicate places. [2024-06-28 02:47:43,606 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 181 transitions, 2081 flow [2024-06-28 02:47:43,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:43,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:43,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:43,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:47:43,606 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:43,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:43,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1377268063, now seen corresponding path program 10 times [2024-06-28 02:47:43,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:43,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321721557] [2024-06-28 02:47:43,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:43,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:43,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:43,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:43,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321721557] [2024-06-28 02:47:43,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321721557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:43,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:43,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:43,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693338147] [2024-06-28 02:47:43,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:43,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:43,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:43,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:43,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:43,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:43,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 181 transitions, 2081 flow. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:43,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:43,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:43,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:44,170 INFO L124 PetriNetUnfolderBase]: 974/2109 cut-off events. [2024-06-28 02:47:44,170 INFO L125 PetriNetUnfolderBase]: For 123408/123411 co-relation queries the response was YES. [2024-06-28 02:47:44,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12069 conditions, 2109 events. 974/2109 cut-off events. For 123408/123411 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 14109 event pairs, 334 based on Foata normal form. 4/2105 useless extension candidates. Maximal degree in co-relation 11966. Up to 1172 conditions per place. [2024-06-28 02:47:44,189 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 170 selfloop transitions, 56 changer transitions 0/233 dead transitions. [2024-06-28 02:47:44,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 233 transitions, 2901 flow [2024-06-28 02:47:44,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-06-28 02:47:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-06-28 02:47:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 303 transitions. [2024-06-28 02:47:44,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310099573257468 [2024-06-28 02:47:44,190 INFO L175 Difference]: Start difference. First operand has 320 places, 181 transitions, 2081 flow. Second operand 19 states and 303 transitions. [2024-06-28 02:47:44,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 233 transitions, 2901 flow [2024-06-28 02:47:44,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 233 transitions, 2767 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-06-28 02:47:44,406 INFO L231 Difference]: Finished difference. Result has 325 places, 181 transitions, 2063 flow [2024-06-28 02:47:44,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1947, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2063, PETRI_PLACES=325, PETRI_TRANSITIONS=181} [2024-06-28 02:47:44,406 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 287 predicate places. [2024-06-28 02:47:44,406 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 181 transitions, 2063 flow [2024-06-28 02:47:44,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 11 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:44,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:44,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:44,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:47:44,407 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:44,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:44,407 INFO L85 PathProgramCache]: Analyzing trace with hash -923768806, now seen corresponding path program 1 times [2024-06-28 02:47:44,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:44,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455851937] [2024-06-28 02:47:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:44,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:44,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:44,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:44,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455851937] [2024-06-28 02:47:44,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455851937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:44,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:44,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:47:44,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616461541] [2024-06-28 02:47:44,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:44,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:47:44,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:44,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:47:44,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:47:44,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:44,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 181 transitions, 2063 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:44,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:44,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:44,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:44,962 INFO L124 PetriNetUnfolderBase]: 950/2055 cut-off events. [2024-06-28 02:47:44,963 INFO L125 PetriNetUnfolderBase]: For 117236/117239 co-relation queries the response was YES. [2024-06-28 02:47:44,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10948 conditions, 2055 events. 950/2055 cut-off events. For 117236/117239 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 13678 event pairs, 338 based on Foata normal form. 16/2063 useless extension candidates. Maximal degree in co-relation 10844. Up to 1375 conditions per place. [2024-06-28 02:47:44,978 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 139 selfloop transitions, 23 changer transitions 48/217 dead transitions. [2024-06-28 02:47:44,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 217 transitions, 2603 flow [2024-06-28 02:47:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:47:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:47:45,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 214 transitions. [2024-06-28 02:47:45,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44490644490644493 [2024-06-28 02:47:45,013 INFO L175 Difference]: Start difference. First operand has 325 places, 181 transitions, 2063 flow. Second operand 13 states and 214 transitions. [2024-06-28 02:47:45,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 217 transitions, 2603 flow [2024-06-28 02:47:45,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 217 transitions, 2464 flow, removed 5 selfloop flow, removed 17 redundant places. [2024-06-28 02:47:45,239 INFO L231 Difference]: Finished difference. Result has 321 places, 150 transitions, 1602 flow [2024-06-28 02:47:45,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1924, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1602, PETRI_PLACES=321, PETRI_TRANSITIONS=150} [2024-06-28 02:47:45,239 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 283 predicate places. [2024-06-28 02:47:45,239 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 150 transitions, 1602 flow [2024-06-28 02:47:45,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:45,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:45,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:45,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:47:45,240 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:45,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:45,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1706335924, now seen corresponding path program 2 times [2024-06-28 02:47:45,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:45,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053634742] [2024-06-28 02:47:45,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:45,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:45,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:45,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053634742] [2024-06-28 02:47:45,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053634742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:45,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:45,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:45,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504385689] [2024-06-28 02:47:45,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:45,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:45,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:45,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:45,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:45,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:45,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 150 transitions, 1602 flow. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:45,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:45,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:45,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:45,705 INFO L124 PetriNetUnfolderBase]: 767/1669 cut-off events. [2024-06-28 02:47:45,705 INFO L125 PetriNetUnfolderBase]: For 93595/93598 co-relation queries the response was YES. [2024-06-28 02:47:45,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9122 conditions, 1669 events. 767/1669 cut-off events. For 93595/93598 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 10440 event pairs, 247 based on Foata normal form. 4/1666 useless extension candidates. Maximal degree in co-relation 9018. Up to 761 conditions per place. [2024-06-28 02:47:45,717 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 124 selfloop transitions, 36 changer transitions 20/187 dead transitions. [2024-06-28 02:47:45,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 187 transitions, 2184 flow [2024-06-28 02:47:45,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:47:45,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:47:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 215 transitions. [2024-06-28 02:47:45,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446985446985447 [2024-06-28 02:47:45,718 INFO L175 Difference]: Start difference. First operand has 321 places, 150 transitions, 1602 flow. Second operand 13 states and 215 transitions. [2024-06-28 02:47:45,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 187 transitions, 2184 flow [2024-06-28 02:47:45,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 187 transitions, 1995 flow, removed 19 selfloop flow, removed 29 redundant places. [2024-06-28 02:47:45,885 INFO L231 Difference]: Finished difference. Result has 272 places, 144 transitions, 1459 flow [2024-06-28 02:47:45,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1427, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1459, PETRI_PLACES=272, PETRI_TRANSITIONS=144} [2024-06-28 02:47:45,885 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 234 predicate places. [2024-06-28 02:47:45,886 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 144 transitions, 1459 flow [2024-06-28 02:47:45,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:45,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:45,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:45,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:47:45,886 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:45,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:45,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1396064396, now seen corresponding path program 3 times [2024-06-28 02:47:45,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:45,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698636720] [2024-06-28 02:47:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:45,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:46,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:46,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698636720] [2024-06-28 02:47:46,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698636720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:46,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:46,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:47:46,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363806472] [2024-06-28 02:47:46,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:46,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:47:46,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:46,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:47:46,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:47:46,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:46,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 144 transitions, 1459 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:46,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:46,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:46,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:46,471 INFO L124 PetriNetUnfolderBase]: 715/1556 cut-off events. [2024-06-28 02:47:46,471 INFO L125 PetriNetUnfolderBase]: For 69275/69278 co-relation queries the response was YES. [2024-06-28 02:47:46,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7735 conditions, 1556 events. 715/1556 cut-off events. For 69275/69278 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9570 event pairs, 254 based on Foata normal form. 12/1562 useless extension candidates. Maximal degree in co-relation 7642. Up to 802 conditions per place. [2024-06-28 02:47:46,483 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 122 selfloop transitions, 29 changer transitions 31/189 dead transitions. [2024-06-28 02:47:46,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 189 transitions, 2065 flow [2024-06-28 02:47:46,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 02:47:46,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 02:47:46,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 246 transitions. [2024-06-28 02:47:46,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 02:47:46,485 INFO L175 Difference]: Start difference. First operand has 272 places, 144 transitions, 1459 flow. Second operand 15 states and 246 transitions. [2024-06-28 02:47:46,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 189 transitions, 2065 flow [2024-06-28 02:47:46,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 189 transitions, 1940 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-28 02:47:46,592 INFO L231 Difference]: Finished difference. Result has 265 places, 126 transitions, 1248 flow [2024-06-28 02:47:46,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1248, PETRI_PLACES=265, PETRI_TRANSITIONS=126} [2024-06-28 02:47:46,592 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 227 predicate places. [2024-06-28 02:47:46,592 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 126 transitions, 1248 flow [2024-06-28 02:47:46,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:46,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:46,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:46,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:47:46,593 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:46,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:46,593 INFO L85 PathProgramCache]: Analyzing trace with hash -271278890, now seen corresponding path program 4 times [2024-06-28 02:47:46,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:46,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186735702] [2024-06-28 02:47:46,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:46,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:46,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:46,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186735702] [2024-06-28 02:47:46,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186735702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:46,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:46,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:47:46,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638196437] [2024-06-28 02:47:46,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:46,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:47:46,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:46,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:47:46,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:47:46,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:46,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 126 transitions, 1248 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:46,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:46,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:46,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:47,107 INFO L124 PetriNetUnfolderBase]: 611/1334 cut-off events. [2024-06-28 02:47:47,108 INFO L125 PetriNetUnfolderBase]: For 51203/51206 co-relation queries the response was YES. [2024-06-28 02:47:47,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6441 conditions, 1334 events. 611/1334 cut-off events. For 51203/51206 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7831 event pairs, 236 based on Foata normal form. 8/1336 useless extension candidates. Maximal degree in co-relation 6352. Up to 802 conditions per place. [2024-06-28 02:47:47,116 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 96 selfloop transitions, 24 changer transitions 39/166 dead transitions. [2024-06-28 02:47:47,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 166 transitions, 1700 flow [2024-06-28 02:47:47,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:47:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:47:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 214 transitions. [2024-06-28 02:47:47,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44490644490644493 [2024-06-28 02:47:47,116 INFO L175 Difference]: Start difference. First operand has 265 places, 126 transitions, 1248 flow. Second operand 13 states and 214 transitions. [2024-06-28 02:47:47,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 166 transitions, 1700 flow [2024-06-28 02:47:47,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 166 transitions, 1583 flow, removed 7 selfloop flow, removed 24 redundant places. [2024-06-28 02:47:47,199 INFO L231 Difference]: Finished difference. Result has 235 places, 111 transitions, 1045 flow [2024-06-28 02:47:47,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1045, PETRI_PLACES=235, PETRI_TRANSITIONS=111} [2024-06-28 02:47:47,199 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 197 predicate places. [2024-06-28 02:47:47,199 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 111 transitions, 1045 flow [2024-06-28 02:47:47,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:47,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:47,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:47,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:47:47,200 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:47,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:47,200 INFO L85 PathProgramCache]: Analyzing trace with hash -736810728, now seen corresponding path program 5 times [2024-06-28 02:47:47,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:47,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810083674] [2024-06-28 02:47:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:47,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:47,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:47,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:47,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:47,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810083674] [2024-06-28 02:47:47,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810083674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:47,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:47,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:47,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35645262] [2024-06-28 02:47:47,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:47,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:47,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:47,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:47,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:47,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:47,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 111 transitions, 1045 flow. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:47,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:47,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:47,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:47,628 INFO L124 PetriNetUnfolderBase]: 523/1138 cut-off events. [2024-06-28 02:47:47,628 INFO L125 PetriNetUnfolderBase]: For 35465/35468 co-relation queries the response was YES. [2024-06-28 02:47:47,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5352 conditions, 1138 events. 523/1138 cut-off events. For 35465/35468 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6445 event pairs, 127 based on Foata normal form. 4/1136 useless extension candidates. Maximal degree in co-relation 5270. Up to 476 conditions per place. [2024-06-28 02:47:47,635 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 68 selfloop transitions, 19 changer transitions 39/133 dead transitions. [2024-06-28 02:47:47,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 133 transitions, 1367 flow [2024-06-28 02:47:47,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:47:47,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:47:47,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 02:47:47,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 02:47:47,635 INFO L175 Difference]: Start difference. First operand has 235 places, 111 transitions, 1045 flow. Second operand 10 states and 161 transitions. [2024-06-28 02:47:47,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 133 transitions, 1367 flow [2024-06-28 02:47:47,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 133 transitions, 1285 flow, removed 9 selfloop flow, removed 16 redundant places. [2024-06-28 02:47:47,693 INFO L231 Difference]: Finished difference. Result has 205 places, 85 transitions, 725 flow [2024-06-28 02:47:47,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=725, PETRI_PLACES=205, PETRI_TRANSITIONS=85} [2024-06-28 02:47:47,694 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 167 predicate places. [2024-06-28 02:47:47,694 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 85 transitions, 725 flow [2024-06-28 02:47:47,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:47,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:47,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:47,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:47:47,694 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:47,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:47,695 INFO L85 PathProgramCache]: Analyzing trace with hash 347093892, now seen corresponding path program 6 times [2024-06-28 02:47:47,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:47,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773732448] [2024-06-28 02:47:47,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:47,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:47,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:47,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773732448] [2024-06-28 02:47:47,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773732448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:47,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:47,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:47:47,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998382510] [2024-06-28 02:47:47,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:47,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:47:47,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:47,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:47:47,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:47:47,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:47,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 85 transitions, 725 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:47,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:47,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:47,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:48,094 INFO L124 PetriNetUnfolderBase]: 364/799 cut-off events. [2024-06-28 02:47:48,094 INFO L125 PetriNetUnfolderBase]: For 25749/25749 co-relation queries the response was YES. [2024-06-28 02:47:48,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3363 conditions, 799 events. 364/799 cut-off events. For 25749/25749 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4271 event pairs, 105 based on Foata normal form. 16/812 useless extension candidates. Maximal degree in co-relation 3303. Up to 420 conditions per place. [2024-06-28 02:47:48,098 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 50 selfloop transitions, 7 changer transitions 48/112 dead transitions. [2024-06-28 02:47:48,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 112 transitions, 1011 flow [2024-06-28 02:47:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 02:47:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 02:47:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 217 transitions. [2024-06-28 02:47:48,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390990990990991 [2024-06-28 02:47:48,098 INFO L175 Difference]: Start difference. First operand has 205 places, 85 transitions, 725 flow. Second operand 15 states and 217 transitions. [2024-06-28 02:47:48,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 112 transitions, 1011 flow [2024-06-28 02:47:48,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 112 transitions, 851 flow, removed 16 selfloop flow, removed 34 redundant places. [2024-06-28 02:47:48,127 INFO L231 Difference]: Finished difference. Result has 162 places, 59 transitions, 398 flow [2024-06-28 02:47:48,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=398, PETRI_PLACES=162, PETRI_TRANSITIONS=59} [2024-06-28 02:47:48,127 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 124 predicate places. [2024-06-28 02:47:48,127 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 59 transitions, 398 flow [2024-06-28 02:47:48,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:48,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:48,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:48,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:47:48,128 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:48,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:48,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1270706492, now seen corresponding path program 7 times [2024-06-28 02:47:48,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:48,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52438700] [2024-06-28 02:47:48,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:48,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:48,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:48,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:48,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:48,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52438700] [2024-06-28 02:47:48,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52438700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:48,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:48,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:47:48,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717659831] [2024-06-28 02:47:48,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:48,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:47:48,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:48,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:47:48,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:47:48,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:48,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 59 transitions, 398 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:48,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:48,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:48,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:48,516 INFO L124 PetriNetUnfolderBase]: 209/468 cut-off events. [2024-06-28 02:47:48,516 INFO L125 PetriNetUnfolderBase]: For 11108/11108 co-relation queries the response was YES. [2024-06-28 02:47:48,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1921 conditions, 468 events. 209/468 cut-off events. For 11108/11108 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2111 event pairs, 27 based on Foata normal form. 4/471 useless extension candidates. Maximal degree in co-relation 1877. Up to 129 conditions per place. [2024-06-28 02:47:48,517 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 34 selfloop transitions, 18 changer transitions 27/86 dead transitions. [2024-06-28 02:47:48,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 86 transitions, 620 flow [2024-06-28 02:47:48,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-06-28 02:47:48,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-06-28 02:47:48,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 224 transitions. [2024-06-28 02:47:48,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783783783783784 [2024-06-28 02:47:48,518 INFO L175 Difference]: Start difference. First operand has 162 places, 59 transitions, 398 flow. Second operand 16 states and 224 transitions. [2024-06-28 02:47:48,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 86 transitions, 620 flow [2024-06-28 02:47:48,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 86 transitions, 536 flow, removed 20 selfloop flow, removed 27 redundant places. [2024-06-28 02:47:48,526 INFO L231 Difference]: Finished difference. Result has 114 places, 48 transitions, 283 flow [2024-06-28 02:47:48,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=283, PETRI_PLACES=114, PETRI_TRANSITIONS=48} [2024-06-28 02:47:48,526 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 76 predicate places. [2024-06-28 02:47:48,526 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 48 transitions, 283 flow [2024-06-28 02:47:48,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:48,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:48,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:48,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:47:48,527 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:48,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:48,527 INFO L85 PathProgramCache]: Analyzing trace with hash -704647584, now seen corresponding path program 8 times [2024-06-28 02:47:48,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:48,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819372344] [2024-06-28 02:47:48,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:48,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:48,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:48,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819372344] [2024-06-28 02:47:48,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819372344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:48,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:48,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:47:48,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456373709] [2024-06-28 02:47:48,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:48,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:47:48,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:48,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:47:48,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:47:48,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:48,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 48 transitions, 283 flow. Second operand has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:48,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:48,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:48,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:48,880 INFO L124 PetriNetUnfolderBase]: 140/323 cut-off events. [2024-06-28 02:47:48,880 INFO L125 PetriNetUnfolderBase]: For 3330/3330 co-relation queries the response was YES. [2024-06-28 02:47:48,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 323 events. 140/323 cut-off events. For 3330/3330 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1243 event pairs, 13 based on Foata normal form. 12/334 useless extension candidates. Maximal degree in co-relation 981. Up to 77 conditions per place. [2024-06-28 02:47:48,881 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 23 selfloop transitions, 6 changer transitions 37/73 dead transitions. [2024-06-28 02:47:48,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 73 transitions, 467 flow [2024-06-28 02:47:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 02:47:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 02:47:48,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 210 transitions. [2024-06-28 02:47:48,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783783783783784 [2024-06-28 02:47:48,882 INFO L175 Difference]: Start difference. First operand has 114 places, 48 transitions, 283 flow. Second operand 15 states and 210 transitions. [2024-06-28 02:47:48,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 73 transitions, 467 flow [2024-06-28 02:47:48,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 73 transitions, 419 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-28 02:47:48,884 INFO L231 Difference]: Finished difference. Result has 99 places, 30 transitions, 140 flow [2024-06-28 02:47:48,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=140, PETRI_PLACES=99, PETRI_TRANSITIONS=30} [2024-06-28 02:47:48,884 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 61 predicate places. [2024-06-28 02:47:48,884 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 30 transitions, 140 flow [2024-06-28 02:47:48,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.75) internal successors, (141), 12 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:48,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:47:48,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:48,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:47:48,885 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:47:48,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:47:48,885 INFO L85 PathProgramCache]: Analyzing trace with hash -494186796, now seen corresponding path program 9 times [2024-06-28 02:47:48,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:47:48,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261465564] [2024-06-28 02:47:48,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:47:48,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:47:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:47:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:47:49,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:47:49,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261465564] [2024-06-28 02:47:49,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261465564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:47:49,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:47:49,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:47:49,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210465690] [2024-06-28 02:47:49,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:47:49,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:47:49,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:47:49,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:47:49,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:47:49,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 02:47:49,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 30 transitions, 140 flow. Second operand has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:49,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:47:49,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 02:47:49,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:47:49,164 INFO L124 PetriNetUnfolderBase]: 40/107 cut-off events. [2024-06-28 02:47:49,164 INFO L125 PetriNetUnfolderBase]: For 490/490 co-relation queries the response was YES. [2024-06-28 02:47:49,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 107 events. 40/107 cut-off events. For 490/490 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 181 event pairs, 5 based on Foata normal form. 4/110 useless extension candidates. Maximal degree in co-relation 269. Up to 25 conditions per place. [2024-06-28 02:47:49,164 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 0 selfloop transitions, 0 changer transitions 41/41 dead transitions. [2024-06-28 02:47:49,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 41 transitions, 200 flow [2024-06-28 02:47:49,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:47:49,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:47:49,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-28 02:47:49,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36486486486486486 [2024-06-28 02:47:49,165 INFO L175 Difference]: Start difference. First operand has 99 places, 30 transitions, 140 flow. Second operand 10 states and 135 transitions. [2024-06-28 02:47:49,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 41 transitions, 200 flow [2024-06-28 02:47:49,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 41 transitions, 160 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-28 02:47:49,166 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2024-06-28 02:47:49,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2024-06-28 02:47:49,167 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 21 predicate places. [2024-06-28 02:47:49,167 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2024-06-28 02:47:49,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.909090909090908) internal successors, (131), 11 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:47:49,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 02:47:49,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 02:47:49,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 02:47:49,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 02:47:49,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:47:49,170 INFO L445 BasicCegarLoop]: Path program histogram: [11, 10, 10, 9, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:47:49,173 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 02:47:49,173 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 02:47:49,175 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 02:47:49,176 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 02:47:49,176 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 02:47:49 BasicIcfg [2024-06-28 02:47:49,176 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 02:47:49,177 INFO L158 Benchmark]: Toolchain (without parser) took 36713.49ms. Allocated memory was 159.4MB in the beginning and 929.0MB in the end (delta: 769.7MB). Free memory was 82.4MB in the beginning and 597.1MB in the end (delta: -514.7MB). Peak memory consumption was 256.0MB. Max. memory is 16.1GB. [2024-06-28 02:47:49,177 INFO L158 Benchmark]: CDTParser took 0.71ms. Allocated memory is still 159.4MB. Free memory was 110.6MB in the beginning and 110.5MB in the end (delta: 159.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:47:49,177 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:47:49,177 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.58ms. Allocated memory was 159.4MB in the beginning and 249.6MB in the end (delta: 90.2MB). Free memory was 82.1MB in the beginning and 219.8MB in the end (delta: -137.7MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2024-06-28 02:47:49,178 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.47ms. Allocated memory is still 249.6MB. Free memory was 219.8MB in the beginning and 217.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:47:49,178 INFO L158 Benchmark]: Boogie Preprocessor took 45.67ms. Allocated memory is still 249.6MB. Free memory was 217.7MB in the beginning and 216.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:47:49,178 INFO L158 Benchmark]: RCFGBuilder took 395.89ms. Allocated memory is still 249.6MB. Free memory was 215.6MB in the beginning and 191.5MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-28 02:47:49,178 INFO L158 Benchmark]: TraceAbstraction took 35875.14ms. Allocated memory was 249.6MB in the beginning and 929.0MB in the end (delta: 679.5MB). Free memory was 190.5MB in the beginning and 597.1MB in the end (delta: -406.6MB). Peak memory consumption was 272.9MB. Max. memory is 16.1GB. [2024-06-28 02:47:49,179 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71ms. Allocated memory is still 159.4MB. Free memory was 110.6MB in the beginning and 110.5MB in the end (delta: 159.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 86.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.58ms. Allocated memory was 159.4MB in the beginning and 249.6MB in the end (delta: 90.2MB). Free memory was 82.1MB in the beginning and 219.8MB in the end (delta: -137.7MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.47ms. Allocated memory is still 249.6MB. Free memory was 219.8MB in the beginning and 217.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.67ms. Allocated memory is still 249.6MB. Free memory was 217.7MB in the beginning and 216.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 395.89ms. Allocated memory is still 249.6MB. Free memory was 215.6MB in the beginning and 191.5MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 35875.14ms. Allocated memory was 249.6MB in the beginning and 929.0MB in the end (delta: 679.5MB). Free memory was 190.5MB in the beginning and 597.1MB in the end (delta: -406.6MB). Peak memory consumption was 272.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 111]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 112]: 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, 64 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: 35.8s, OverallIterations: 69, TraceHistogramMax: 1, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 26.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5826 SdHoareTripleChecker+Valid, 8.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5180 mSDsluCounter, 1440 SdHoareTripleChecker+Invalid, 6.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 974 mSDsCounter, 926 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18799 IncrementalHoareTripleChecker+Invalid, 19725 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 926 mSolverCounterUnsat, 466 mSDtfsCounter, 18799 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 900 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 892 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2099occurred in iteration=57, InterpolantAutomatonStates: 796, 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, 8.9s InterpolantComputationTime, 1552 NumberOfCodeBlocks, 1552 NumberOfCodeBlocksAsserted, 69 NumberOfCheckSat, 1483 ConstructedInterpolants, 0 QuantifiedInterpolants, 17225 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 69 InterpolantComputations, 69 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! [2024-06-28 02:47:49,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE