./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe002_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe002_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:41:07,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:41:07,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:41:07,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:41:07,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:41:07,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:41:07,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:41:07,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:41:07,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:41:07,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:41:07,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:41:07,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:41:07,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:41:07,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:41:07,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:41:07,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:41:07,316 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:41:07,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:41:07,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:41:07,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:41:07,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:41:07,326 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:41:07,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:41:07,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:41:07,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:41:07,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:41:07,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:41:07,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:41:07,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:41:07,338 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:41:07,338 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:41:07,339 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:41:07,341 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:41:07,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:41:07,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:41:07,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:41:07,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:41:07,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:41:07,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:41:07,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:41:07,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:41:07,349 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:41:07,376 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:41:07,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:41:07,377 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:41:07,377 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:41:07,378 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:41:07,378 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:41:07,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:41:07,380 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:41:07,380 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:41:07,381 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:41:07,381 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:41:07,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:41:07,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:41:07,382 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:41:07,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:41:07,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:41:07,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:41:07,383 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:41:07,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:41:07,384 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:41:07,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:41:07,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:41:07,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:41:07,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:41:07,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:07,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:41:07,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:41:07,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:41:07,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:41:07,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:41:07,387 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:41:07,388 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:41:07,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:41:07,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3743abf17a0d3db70a931712c22f305431bb6e8feb7b662539ff9c5190491352 [2022-11-02 20:41:07,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:41:07,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:41:07,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:41:07,829 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:41:07,831 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:41:07,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-wmm/safe002_tso.i [2022-11-02 20:41:07,923 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/data/c4244681d/66c552647f7e4efb9eaae0a07c9a8ac5/FLAG7f1f754d8 [2022-11-02 20:41:08,511 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:41:08,512 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/sv-benchmarks/c/pthread-wmm/safe002_tso.i [2022-11-02 20:41:08,537 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/data/c4244681d/66c552647f7e4efb9eaae0a07c9a8ac5/FLAG7f1f754d8 [2022-11-02 20:41:08,846 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/data/c4244681d/66c552647f7e4efb9eaae0a07c9a8ac5 [2022-11-02 20:41:08,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:41:08,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:41:08,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:08,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:41:08,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:41:08,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:08" (1/1) ... [2022-11-02 20:41:08,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a83fe8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:08, skipping insertion in model container [2022-11-02 20:41:08,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:08" (1/1) ... [2022-11-02 20:41:08,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:41:08,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:41:09,187 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/sv-benchmarks/c/pthread-wmm/safe002_tso.i[945,958] [2022-11-02 20:41:09,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:09,511 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:41:09,528 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/sv-benchmarks/c/pthread-wmm/safe002_tso.i[945,958] [2022-11-02 20:41:09,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:09,650 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:41:09,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:09 WrapperNode [2022-11-02 20:41:09,651 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:09,653 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:09,653 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:41:09,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:41:09,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:09" (1/1) ... [2022-11-02 20:41:09,700 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:09" (1/1) ... [2022-11-02 20:41:09,746 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-11-02 20:41:09,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:09,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:41:09,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:41:09,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:41:09,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:09" (1/1) ... [2022-11-02 20:41:09,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:09" (1/1) ... [2022-11-02 20:41:09,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:09" (1/1) ... [2022-11-02 20:41:09,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:09" (1/1) ... [2022-11-02 20:41:09,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:09" (1/1) ... [2022-11-02 20:41:09,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:09" (1/1) ... [2022-11-02 20:41:09,803 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:09" (1/1) ... [2022-11-02 20:41:09,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:09" (1/1) ... [2022-11-02 20:41:09,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:41:09,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:41:09,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:41:09,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:41:09,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:09" (1/1) ... [2022-11-02 20:41:09,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:09,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:09,864 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:41:09,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:41:09,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:41:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:41:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:41:09,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:41:09,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:41:09,926 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-02 20:41:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-02 20:41:09,926 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-02 20:41:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-02 20:41:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-02 20:41:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-02 20:41:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:41:09,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:41:09,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:41:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:41:09,931 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:41:10,167 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:41:10,170 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:41:10,459 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:41:10,469 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:41:10,469 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:41:10,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:10 BoogieIcfgContainer [2022-11-02 20:41:10,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:41:10,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:41:10,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:41:10,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:41:10,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:41:08" (1/3) ... [2022-11-02 20:41:10,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c021ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:10, skipping insertion in model container [2022-11-02 20:41:10,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:09" (2/3) ... [2022-11-02 20:41:10,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c021ab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:10, skipping insertion in model container [2022-11-02 20:41:10,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:10" (3/3) ... [2022-11-02 20:41:10,486 INFO L112 eAbstractionObserver]: Analyzing ICFG safe002_tso.i [2022-11-02 20:41:10,498 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:41:10,512 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:41:10,513 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:41:10,513 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:41:10,580 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:41:10,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-11-02 20:41:10,688 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-02 20:41:10,689 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:41:10,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-11-02 20:41:10,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-11-02 20:41:10,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-11-02 20:41:10,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:41:10,721 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@1a742e0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:41:10,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:41:10,751 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-11-02 20:41:10,751 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:41:10,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:10,753 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, 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] [2022-11-02 20:41:10,754 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:41:10,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:10,761 INFO L85 PathProgramCache]: Analyzing trace with hash -669003802, now seen corresponding path program 1 times [2022-11-02 20:41:10,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:10,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512198057] [2022-11-02 20:41:10,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:10,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:11,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:11,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512198057] [2022-11-02 20:41:11,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512198057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:11,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:11,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:41:11,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247168341] [2022-11-02 20:41:11,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:11,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:41:11,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:11,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:41:11,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:12,000 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-11-02 20:41:12,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:12,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:12,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-11-02 20:41:12,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:12,662 INFO L130 PetriNetUnfolder]: 350/899 cut-off events. [2022-11-02 20:41:12,662 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-02 20:41:12,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 899 events. 350/899 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5337 event pairs, 58 based on Foata normal form. 31/894 useless extension candidates. Maximal degree in co-relation 1486. Up to 188 conditions per place. [2022-11-02 20:41:12,674 INFO L137 encePairwiseOnDemand]: 81/92 looper letters, 26 selfloop transitions, 6 changer transitions 47/135 dead transitions. [2022-11-02 20:41:12,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 135 transitions, 446 flow [2022-11-02 20:41:12,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:41:12,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:41:12,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 995 transitions. [2022-11-02 20:41:12,697 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8319397993311036 [2022-11-02 20:41:12,698 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 995 transitions. [2022-11-02 20:41:12,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 995 transitions. [2022-11-02 20:41:12,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:12,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 995 transitions. [2022-11-02 20:41:12,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.53846153846153) internal successors, (995), 13 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:12,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:12,761 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:12,763 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 13 states and 995 transitions. [2022-11-02 20:41:12,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 135 transitions, 446 flow [2022-11-02 20:41:12,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 135 transitions, 440 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:41:12,774 INFO L231 Difference]: Finished difference. Result has 105 places, 78 transitions, 240 flow [2022-11-02 20:41:12,777 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=240, PETRI_PLACES=105, PETRI_TRANSITIONS=78} [2022-11-02 20:41:12,781 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 21 predicate places. [2022-11-02 20:41:12,782 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 78 transitions, 240 flow [2022-11-02 20:41:12,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:12,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:12,783 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, 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, 1] [2022-11-02 20:41:12,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:41:12,784 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:41:12,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:12,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1081069657, now seen corresponding path program 1 times [2022-11-02 20:41:12,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:12,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744603962] [2022-11-02 20:41:12,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:12,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:13,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:13,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:13,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744603962] [2022-11-02 20:41:13,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744603962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:13,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:13,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:41:13,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420363608] [2022-11-02 20:41:13,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:13,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:41:13,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:13,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:41:13,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:13,217 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-11-02 20:41:13,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 78 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:13,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:13,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-11-02 20:41:13,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:13,743 INFO L130 PetriNetUnfolder]: 194/648 cut-off events. [2022-11-02 20:41:13,744 INFO L131 PetriNetUnfolder]: For 1321/1550 co-relation queries the response was YES. [2022-11-02 20:41:13,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1971 conditions, 648 events. 194/648 cut-off events. For 1321/1550 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3711 event pairs, 4 based on Foata normal form. 19/649 useless extension candidates. Maximal degree in co-relation 1922. Up to 147 conditions per place. [2022-11-02 20:41:13,755 INFO L137 encePairwiseOnDemand]: 79/92 looper letters, 24 selfloop transitions, 15 changer transitions 52/147 dead transitions. [2022-11-02 20:41:13,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 147 transitions, 926 flow [2022-11-02 20:41:13,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:41:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:41:13,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 989 transitions. [2022-11-02 20:41:13,760 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8269230769230769 [2022-11-02 20:41:13,760 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 989 transitions. [2022-11-02 20:41:13,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 989 transitions. [2022-11-02 20:41:13,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:13,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 989 transitions. [2022-11-02 20:41:13,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 76.07692307692308) internal successors, (989), 13 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:13,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:13,772 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:13,772 INFO L175 Difference]: Start difference. First operand has 105 places, 78 transitions, 240 flow. Second operand 13 states and 989 transitions. [2022-11-02 20:41:13,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 147 transitions, 926 flow [2022-11-02 20:41:13,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 147 transitions, 898 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-11-02 20:41:13,784 INFO L231 Difference]: Finished difference. Result has 116 places, 86 transitions, 391 flow [2022-11-02 20:41:13,785 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=391, PETRI_PLACES=116, PETRI_TRANSITIONS=86} [2022-11-02 20:41:13,785 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 32 predicate places. [2022-11-02 20:41:13,786 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 86 transitions, 391 flow [2022-11-02 20:41:13,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.0) internal successors, (504), 7 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:13,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:13,787 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, 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, 1, 1, 1, 1] [2022-11-02 20:41:13,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:41:13,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:41:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:13,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1530825922, now seen corresponding path program 1 times [2022-11-02 20:41:13,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:13,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652490061] [2022-11-02 20:41:13,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:13,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:14,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:14,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652490061] [2022-11-02 20:41:14,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652490061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:14,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:14,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:41:14,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911948490] [2022-11-02 20:41:14,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:14,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:41:14,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:14,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:41:14,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:14,135 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 92 [2022-11-02 20:41:14,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 86 transitions, 391 flow. Second operand has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:14,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:14,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 92 [2022-11-02 20:41:14,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:14,386 INFO L130 PetriNetUnfolder]: 106/475 cut-off events. [2022-11-02 20:41:14,386 INFO L131 PetriNetUnfolder]: For 1867/2487 co-relation queries the response was YES. [2022-11-02 20:41:14,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1692 conditions, 475 events. 106/475 cut-off events. For 1867/2487 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2779 event pairs, 53 based on Foata normal form. 10/458 useless extension candidates. Maximal degree in co-relation 1629. Up to 109 conditions per place. [2022-11-02 20:41:14,394 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 19 selfloop transitions, 6 changer transitions 25/110 dead transitions. [2022-11-02 20:41:14,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 110 transitions, 716 flow [2022-11-02 20:41:14,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:41:14,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:41:14,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 549 transitions. [2022-11-02 20:41:14,398 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8524844720496895 [2022-11-02 20:41:14,398 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 549 transitions. [2022-11-02 20:41:14,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 549 transitions. [2022-11-02 20:41:14,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:14,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 549 transitions. [2022-11-02 20:41:14,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.42857142857143) internal successors, (549), 7 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:14,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:14,403 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:14,404 INFO L175 Difference]: Start difference. First operand has 116 places, 86 transitions, 391 flow. Second operand 7 states and 549 transitions. [2022-11-02 20:41:14,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 110 transitions, 716 flow [2022-11-02 20:41:14,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 110 transitions, 676 flow, removed 20 selfloop flow, removed 3 redundant places. [2022-11-02 20:41:14,423 INFO L231 Difference]: Finished difference. Result has 114 places, 82 transitions, 345 flow [2022-11-02 20:41:14,424 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=345, PETRI_PLACES=114, PETRI_TRANSITIONS=82} [2022-11-02 20:41:14,427 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 30 predicate places. [2022-11-02 20:41:14,427 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 82 transitions, 345 flow [2022-11-02 20:41:14,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:14,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:14,428 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, 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, 1, 1, 1, 1] [2022-11-02 20:41:14,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:41:14,429 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:41:14,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:14,431 INFO L85 PathProgramCache]: Analyzing trace with hash -821934836, now seen corresponding path program 1 times [2022-11-02 20:41:14,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:14,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503068110] [2022-11-02 20:41:14,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:14,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:14,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:14,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503068110] [2022-11-02 20:41:14,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503068110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:14,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:14,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:41:14,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418226447] [2022-11-02 20:41:14,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:14,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:41:14,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:14,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:41:14,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:14,757 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-11-02 20:41:14,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 82 transitions, 345 flow. Second operand has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:14,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:14,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-11-02 20:41:14,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:15,063 INFO L130 PetriNetUnfolder]: 72/356 cut-off events. [2022-11-02 20:41:15,063 INFO L131 PetriNetUnfolder]: For 953/1225 co-relation queries the response was YES. [2022-11-02 20:41:15,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1137 conditions, 356 events. 72/356 cut-off events. For 953/1225 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1785 event pairs, 5 based on Foata normal form. 11/355 useless extension candidates. Maximal degree in co-relation 1112. Up to 76 conditions per place. [2022-11-02 20:41:15,068 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 23 selfloop transitions, 9 changer transitions 26/114 dead transitions. [2022-11-02 20:41:15,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 114 transitions, 729 flow [2022-11-02 20:41:15,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:41:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:41:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 749 transitions. [2022-11-02 20:41:15,072 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8141304347826087 [2022-11-02 20:41:15,072 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 749 transitions. [2022-11-02 20:41:15,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 749 transitions. [2022-11-02 20:41:15,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:15,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 749 transitions. [2022-11-02 20:41:15,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:15,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:15,084 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:15,085 INFO L175 Difference]: Start difference. First operand has 114 places, 82 transitions, 345 flow. Second operand 10 states and 749 transitions. [2022-11-02 20:41:15,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 114 transitions, 729 flow [2022-11-02 20:41:15,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 114 transitions, 634 flow, removed 30 selfloop flow, removed 11 redundant places. [2022-11-02 20:41:15,095 INFO L231 Difference]: Finished difference. Result has 116 places, 81 transitions, 313 flow [2022-11-02 20:41:15,095 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=313, PETRI_PLACES=116, PETRI_TRANSITIONS=81} [2022-11-02 20:41:15,098 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 32 predicate places. [2022-11-02 20:41:15,100 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 81 transitions, 313 flow [2022-11-02 20:41:15,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.14285714285714) internal successors, (505), 7 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:15,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:15,101 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, 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, 1, 1, 1, 1] [2022-11-02 20:41:15,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:41:15,102 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:41:15,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:15,105 INFO L85 PathProgramCache]: Analyzing trace with hash 883716798, now seen corresponding path program 2 times [2022-11-02 20:41:15,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:15,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188827881] [2022-11-02 20:41:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:15,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:15,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:15,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:15,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188827881] [2022-11-02 20:41:15,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188827881] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:15,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:15,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:41:15,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62864273] [2022-11-02 20:41:15,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:15,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:41:15,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:15,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:41:15,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:15,479 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 92 [2022-11-02 20:41:15,482 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 81 transitions, 313 flow. Second operand has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:15,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:15,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 92 [2022-11-02 20:41:15,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:15,668 INFO L130 PetriNetUnfolder]: 25/218 cut-off events. [2022-11-02 20:41:15,668 INFO L131 PetriNetUnfolder]: For 566/787 co-relation queries the response was YES. [2022-11-02 20:41:15,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 218 events. 25/218 cut-off events. For 566/787 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 944 event pairs, 12 based on Foata normal form. 9/218 useless extension candidates. Maximal degree in co-relation 607. Up to 35 conditions per place. [2022-11-02 20:41:15,671 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 16 selfloop transitions, 5 changer transitions 13/94 dead transitions. [2022-11-02 20:41:15,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 94 transitions, 499 flow [2022-11-02 20:41:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:41:15,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:41:15,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2022-11-02 20:41:15,674 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8385093167701864 [2022-11-02 20:41:15,674 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2022-11-02 20:41:15,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2022-11-02 20:41:15,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:15,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2022-11-02 20:41:15,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:15,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:15,679 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:15,680 INFO L175 Difference]: Start difference. First operand has 116 places, 81 transitions, 313 flow. Second operand 7 states and 540 transitions. [2022-11-02 20:41:15,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 94 transitions, 499 flow [2022-11-02 20:41:15,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 94 transitions, 470 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-11-02 20:41:15,688 INFO L231 Difference]: Finished difference. Result has 113 places, 79 transitions, 299 flow [2022-11-02 20:41:15,688 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=299, PETRI_PLACES=113, PETRI_TRANSITIONS=79} [2022-11-02 20:41:15,691 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 29 predicate places. [2022-11-02 20:41:15,692 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 79 transitions, 299 flow [2022-11-02 20:41:15,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.0) internal successors, (525), 7 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:15,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:15,693 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:15,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:41:15,693 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:41:15,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:15,695 INFO L85 PathProgramCache]: Analyzing trace with hash -828326445, now seen corresponding path program 1 times [2022-11-02 20:41:15,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:15,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850449635] [2022-11-02 20:41:15,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:15,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:15,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:15,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850449635] [2022-11-02 20:41:15,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850449635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:15,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:15,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:41:15,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940947446] [2022-11-02 20:41:15,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:15,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:41:15,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:15,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:41:15,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:41:15,999 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 92 [2022-11-02 20:41:16,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 79 transitions, 299 flow. Second operand has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:16,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:16,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 92 [2022-11-02 20:41:16,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:16,167 INFO L130 PetriNetUnfolder]: 16/141 cut-off events. [2022-11-02 20:41:16,167 INFO L131 PetriNetUnfolder]: For 268/391 co-relation queries the response was YES. [2022-11-02 20:41:16,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 141 events. 16/141 cut-off events. For 268/391 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 360 event pairs, 5 based on Foata normal form. 5/141 useless extension candidates. Maximal degree in co-relation 390. Up to 25 conditions per place. [2022-11-02 20:41:16,169 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 14 selfloop transitions, 5 changer transitions 16/90 dead transitions. [2022-11-02 20:41:16,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 90 transitions, 449 flow [2022-11-02 20:41:16,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:41:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:41:16,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 663 transitions. [2022-11-02 20:41:16,172 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8007246376811594 [2022-11-02 20:41:16,173 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 663 transitions. [2022-11-02 20:41:16,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 663 transitions. [2022-11-02 20:41:16,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:16,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 663 transitions. [2022-11-02 20:41:16,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.66666666666667) internal successors, (663), 9 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:16,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:16,181 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:16,181 INFO L175 Difference]: Start difference. First operand has 113 places, 79 transitions, 299 flow. Second operand 9 states and 663 transitions. [2022-11-02 20:41:16,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 90 transitions, 449 flow [2022-11-02 20:41:16,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 90 transitions, 416 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-11-02 20:41:16,186 INFO L231 Difference]: Finished difference. Result has 114 places, 73 transitions, 234 flow [2022-11-02 20:41:16,187 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=234, PETRI_PLACES=114, PETRI_TRANSITIONS=73} [2022-11-02 20:41:16,190 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 30 predicate places. [2022-11-02 20:41:16,190 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 73 transitions, 234 flow [2022-11-02 20:41:16,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.125) internal successors, (577), 8 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:16,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:16,191 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, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:16,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:41:16,192 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:41:16,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:16,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2069639245, now seen corresponding path program 2 times [2022-11-02 20:41:16,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:16,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965837335] [2022-11-02 20:41:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:16,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:16,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:16,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965837335] [2022-11-02 20:41:16,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965837335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:16,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:16,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:41:16,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108053099] [2022-11-02 20:41:16,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:16,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:41:16,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:16,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:41:16,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:41:16,494 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-11-02 20:41:16,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 73 transitions, 234 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:16,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:16,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-11-02 20:41:16,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:16,692 INFO L130 PetriNetUnfolder]: 113/366 cut-off events. [2022-11-02 20:41:16,692 INFO L131 PetriNetUnfolder]: For 230/231 co-relation queries the response was YES. [2022-11-02 20:41:16,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 366 events. 113/366 cut-off events. For 230/231 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1750 event pairs, 14 based on Foata normal form. 8/359 useless extension candidates. Maximal degree in co-relation 757. Up to 90 conditions per place. [2022-11-02 20:41:16,697 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 14 selfloop transitions, 6 changer transitions 19/99 dead transitions. [2022-11-02 20:41:16,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 99 transitions, 366 flow [2022-11-02 20:41:16,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:41:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:41:16,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 716 transitions. [2022-11-02 20:41:16,701 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2022-11-02 20:41:16,701 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 716 transitions. [2022-11-02 20:41:16,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 716 transitions. [2022-11-02 20:41:16,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:16,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 716 transitions. [2022-11-02 20:41:16,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.55555555555556) internal successors, (716), 9 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:16,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:16,708 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:16,708 INFO L175 Difference]: Start difference. First operand has 114 places, 73 transitions, 234 flow. Second operand 9 states and 716 transitions. [2022-11-02 20:41:16,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 99 transitions, 366 flow [2022-11-02 20:41:16,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 99 transitions, 322 flow, removed 8 selfloop flow, removed 12 redundant places. [2022-11-02 20:41:16,713 INFO L231 Difference]: Finished difference. Result has 109 places, 76 transitions, 246 flow [2022-11-02 20:41:16,713 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=246, PETRI_PLACES=109, PETRI_TRANSITIONS=76} [2022-11-02 20:41:16,715 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 25 predicate places. [2022-11-02 20:41:16,715 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 76 transitions, 246 flow [2022-11-02 20:41:16,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:16,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:16,716 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:16,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:41:16,717 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:41:16,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:16,717 INFO L85 PathProgramCache]: Analyzing trace with hash -466116916, now seen corresponding path program 1 times [2022-11-02 20:41:16,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:16,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877587986] [2022-11-02 20:41:16,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:16,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:17,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:17,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877587986] [2022-11-02 20:41:17,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877587986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:17,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:17,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:41:17,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497430017] [2022-11-02 20:41:17,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:17,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:41:17,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:17,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:41:17,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:17,018 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-11-02 20:41:17,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 76 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:17,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:17,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-11-02 20:41:17,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:17,214 INFO L130 PetriNetUnfolder]: 60/247 cut-off events. [2022-11-02 20:41:17,214 INFO L131 PetriNetUnfolder]: For 361/379 co-relation queries the response was YES. [2022-11-02 20:41:17,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 247 events. 60/247 cut-off events. For 361/379 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 889 event pairs, 4 based on Foata normal form. 9/251 useless extension candidates. Maximal degree in co-relation 699. Up to 79 conditions per place. [2022-11-02 20:41:17,217 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 14 selfloop transitions, 9 changer transitions 19/102 dead transitions. [2022-11-02 20:41:17,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 102 transitions, 511 flow [2022-11-02 20:41:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:41:17,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:41:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 794 transitions. [2022-11-02 20:41:17,220 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8630434782608696 [2022-11-02 20:41:17,220 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 794 transitions. [2022-11-02 20:41:17,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 794 transitions. [2022-11-02 20:41:17,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:17,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 794 transitions. [2022-11-02 20:41:17,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.4) internal successors, (794), 10 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:17,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:17,226 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:17,227 INFO L175 Difference]: Start difference. First operand has 109 places, 76 transitions, 246 flow. Second operand 10 states and 794 transitions. [2022-11-02 20:41:17,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 102 transitions, 511 flow [2022-11-02 20:41:17,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 485 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-11-02 20:41:17,232 INFO L231 Difference]: Finished difference. Result has 114 places, 79 transitions, 312 flow [2022-11-02 20:41:17,232 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=312, PETRI_PLACES=114, PETRI_TRANSITIONS=79} [2022-11-02 20:41:17,235 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 30 predicate places. [2022-11-02 20:41:17,235 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 79 transitions, 312 flow [2022-11-02 20:41:17,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:17,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:17,236 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:17,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:41:17,237 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:41:17,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:17,237 INFO L85 PathProgramCache]: Analyzing trace with hash -581001403, now seen corresponding path program 1 times [2022-11-02 20:41:17,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:17,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490857125] [2022-11-02 20:41:17,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:17,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:17,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:17,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490857125] [2022-11-02 20:41:17,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490857125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:17,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:17,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:41:17,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876658313] [2022-11-02 20:41:17,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:17,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:41:17,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:17,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:41:17,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:41:17,513 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-11-02 20:41:17,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 79 transitions, 312 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:17,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:17,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-11-02 20:41:17,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:17,741 INFO L130 PetriNetUnfolder]: 17/131 cut-off events. [2022-11-02 20:41:17,742 INFO L131 PetriNetUnfolder]: For 395/410 co-relation queries the response was YES. [2022-11-02 20:41:17,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 131 events. 17/131 cut-off events. For 395/410 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 254 event pairs, 0 based on Foata normal form. 10/141 useless extension candidates. Maximal degree in co-relation 391. Up to 31 conditions per place. [2022-11-02 20:41:17,744 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 8 selfloop transitions, 12 changer transitions 13/93 dead transitions. [2022-11-02 20:41:17,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 93 transitions, 508 flow [2022-11-02 20:41:17,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:41:17,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:41:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 860 transitions. [2022-11-02 20:41:17,747 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.849802371541502 [2022-11-02 20:41:17,748 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 860 transitions. [2022-11-02 20:41:17,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 860 transitions. [2022-11-02 20:41:17,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:17,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 860 transitions. [2022-11-02 20:41:17,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 78.18181818181819) internal successors, (860), 11 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:17,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:17,755 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 92.0) internal successors, (1104), 12 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:17,755 INFO L175 Difference]: Start difference. First operand has 114 places, 79 transitions, 312 flow. Second operand 11 states and 860 transitions. [2022-11-02 20:41:17,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 93 transitions, 508 flow [2022-11-02 20:41:17,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 93 transitions, 393 flow, removed 47 selfloop flow, removed 14 redundant places. [2022-11-02 20:41:17,761 INFO L231 Difference]: Finished difference. Result has 112 places, 79 transitions, 282 flow [2022-11-02 20:41:17,761 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=282, PETRI_PLACES=112, PETRI_TRANSITIONS=79} [2022-11-02 20:41:17,762 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 28 predicate places. [2022-11-02 20:41:17,763 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 79 transitions, 282 flow [2022-11-02 20:41:17,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:17,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:17,764 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:17,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:41:17,765 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:41:17,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:17,778 INFO L85 PathProgramCache]: Analyzing trace with hash -280139480, now seen corresponding path program 1 times [2022-11-02 20:41:17,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:17,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489181848] [2022-11-02 20:41:17,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:17,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:41:18,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:18,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489181848] [2022-11-02 20:41:18,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489181848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:18,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:18,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:41:18,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455384723] [2022-11-02 20:41:18,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:18,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:41:18,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:18,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:41:18,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:18,022 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-11-02 20:41:18,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 79 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:18,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:18,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-11-02 20:41:18,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:18,137 INFO L130 PetriNetUnfolder]: 6/94 cut-off events. [2022-11-02 20:41:18,137 INFO L131 PetriNetUnfolder]: For 83/89 co-relation queries the response was YES. [2022-11-02 20:41:18,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 94 events. 6/94 cut-off events. For 83/89 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 0 based on Foata normal form. 1/94 useless extension candidates. Maximal degree in co-relation 189. Up to 11 conditions per place. [2022-11-02 20:41:18,138 INFO L137 encePairwiseOnDemand]: 86/92 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2022-11-02 20:41:18,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 78 transitions, 308 flow [2022-11-02 20:41:18,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:41:18,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:41:18,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 539 transitions. [2022-11-02 20:41:18,141 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8369565217391305 [2022-11-02 20:41:18,141 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 539 transitions. [2022-11-02 20:41:18,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 539 transitions. [2022-11-02 20:41:18,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:18,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 539 transitions. [2022-11-02 20:41:18,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.0) internal successors, (539), 7 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:18,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:18,147 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:18,147 INFO L175 Difference]: Start difference. First operand has 112 places, 79 transitions, 282 flow. Second operand 7 states and 539 transitions. [2022-11-02 20:41:18,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 78 transitions, 308 flow [2022-11-02 20:41:18,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 78 transitions, 226 flow, removed 22 selfloop flow, removed 15 redundant places. [2022-11-02 20:41:18,150 INFO L231 Difference]: Finished difference. Result has 97 places, 0 transitions, 0 flow [2022-11-02 20:41:18,151 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=97, PETRI_TRANSITIONS=0} [2022-11-02 20:41:18,152 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2022-11-02 20:41:18,153 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 0 transitions, 0 flow [2022-11-02 20:41:18,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:41:18,156 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-02 20:41:18,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-02 20:41:18,157 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-02 20:41:18,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-02 20:41:18,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:41:18,158 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:18,163 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:41:18,163 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:41:18,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:41:18 BasicIcfg [2022-11-02 20:41:18,172 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:41:18,173 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:41:18,173 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:41:18,174 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:41:18,174 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:10" (3/4) ... [2022-11-02 20:41:18,178 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:41:18,187 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-02 20:41:18,187 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-02 20:41:18,187 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-02 20:41:18,195 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-02 20:41:18,196 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:41:18,196 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:41:18,196 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:41:18,245 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:41:18,245 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:41:18,246 INFO L158 Benchmark]: Toolchain (without parser) took 9395.16ms. Allocated memory was 115.3MB in the beginning and 184.5MB in the end (delta: 69.2MB). Free memory was 73.2MB in the beginning and 97.4MB in the end (delta: -24.2MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2022-11-02 20:41:18,247 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 115.3MB. Free memory was 91.8MB in the beginning and 91.7MB in the end (delta: 90.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:41:18,247 INFO L158 Benchmark]: CACSL2BoogieTranslator took 798.74ms. Allocated memory is still 115.3MB. Free memory was 73.0MB in the beginning and 79.8MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:41:18,248 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.63ms. Allocated memory is still 115.3MB. Free memory was 79.8MB in the beginning and 77.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:41:18,248 INFO L158 Benchmark]: Boogie Preprocessor took 67.15ms. Allocated memory is still 115.3MB. Free memory was 77.7MB in the beginning and 76.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:41:18,248 INFO L158 Benchmark]: RCFGBuilder took 656.47ms. Allocated memory is still 115.3MB. Free memory was 76.3MB in the beginning and 62.7MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 20:41:18,249 INFO L158 Benchmark]: TraceAbstraction took 7695.94ms. Allocated memory was 115.3MB in the beginning and 184.5MB in the end (delta: 69.2MB). Free memory was 62.3MB in the beginning and 100.6MB in the end (delta: -38.3MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2022-11-02 20:41:18,249 INFO L158 Benchmark]: Witness Printer took 72.04ms. Allocated memory is still 184.5MB. Free memory was 100.6MB in the beginning and 97.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:41:18,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 115.3MB. Free memory was 91.8MB in the beginning and 91.7MB in the end (delta: 90.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 798.74ms. Allocated memory is still 115.3MB. Free memory was 73.0MB in the beginning and 79.8MB in the end (delta: -6.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.63ms. Allocated memory is still 115.3MB. Free memory was 79.8MB in the beginning and 77.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.15ms. Allocated memory is still 115.3MB. Free memory was 77.7MB in the beginning and 76.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 656.47ms. Allocated memory is still 115.3MB. Free memory was 76.3MB in the beginning and 62.7MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7695.94ms. Allocated memory was 115.3MB in the beginning and 184.5MB in the end (delta: 69.2MB). Free memory was 62.3MB in the beginning and 100.6MB in the end (delta: -38.3MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * Witness Printer took 72.04ms. Allocated memory is still 184.5MB. Free memory was 100.6MB in the beginning and 97.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 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: 7.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 317 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 317 mSDsluCounter, 533 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 536 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 618 IncrementalHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 135 mSDtfsCounter, 618 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=391occurred in iteration=2, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 614 NumberOfCodeBlocks, 614 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 604 ConstructedInterpolants, 0 QuantifiedInterpolants, 2484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:41:18,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_296fb5a4-d7d9-49e9-ade6-1116a385a848/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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