./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ --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 95e3bac7f28ae020b684175cea363a5866905518c289fbd40a07a7a3764acade --- 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-dbf71c6-m [2022-10-17 10:59:36,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:59:36,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:59:36,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:59:36,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:59:36,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:59:36,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:59:36,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:59:36,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:59:36,295 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:59:36,296 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:59:36,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:59:36,301 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:59:36,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:59:36,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:59:36,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:59:36,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:59:36,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:59:36,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:59:36,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:59:36,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:59:36,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:59:36,334 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:59:36,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:59:36,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:59:36,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:59:36,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:59:36,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:59:36,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:59:36,348 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:59:36,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:59:36,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:59:36,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:59:36,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:59:36,355 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:59:36,362 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:59:36,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:59:36,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:59:36,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:59:36,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:59:36,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:59:36,367 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:59:36,419 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:59:36,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:59:36,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:59:36,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:59:36,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:59:36,422 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:59:36,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:59:36,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:59:36,423 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:59:36,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:59:36,424 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:59:36,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:59:36,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:59:36,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:59:36,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:59:36,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:59:36,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:59:36,426 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:59:36,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:59:36,426 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:59:36,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:59:36,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:59:36,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:59:36,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:59:36,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:59:36,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:59:36,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:59:36,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:59:36,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:59:36,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:59:36,430 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:59:36,430 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:59:36,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:59:36,431 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_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95e3bac7f28ae020b684175cea363a5866905518c289fbd40a07a7a3764acade [2022-10-17 10:59:36,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:59:36,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:59:36,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:59:36,780 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:59:36,781 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:59:36,783 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2022-10-17 10:59:36,857 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/data/6e83bf311/7c0f3d5d63924a0c87f3f4dfcf04bc6a/FLAG24a8372ee [2022-10-17 10:59:37,382 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:59:37,383 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2022-10-17 10:59:37,399 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/data/6e83bf311/7c0f3d5d63924a0c87f3f4dfcf04bc6a/FLAG24a8372ee [2022-10-17 10:59:37,738 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/data/6e83bf311/7c0f3d5d63924a0c87f3f4dfcf04bc6a [2022-10-17 10:59:37,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:59:37,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:59:37,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:59:37,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:59:37,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:59:37,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:59:37" (1/1) ... [2022-10-17 10:59:37,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c41ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:37, skipping insertion in model container [2022-10-17 10:59:37,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:59:37" (1/1) ... [2022-10-17 10:59:37,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:59:37,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:59:38,064 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_8e22cd6c-189b-4f54-ad49-51ee18709b37/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c[2641,2654] [2022-10-17 10:59:38,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:59:38,102 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:59:38,143 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_8e22cd6c-189b-4f54-ad49-51ee18709b37/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c[2641,2654] [2022-10-17 10:59:38,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:59:38,164 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:59:38,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:38 WrapperNode [2022-10-17 10:59:38,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:59:38,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:59:38,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:59:38,169 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:59:38,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:38" (1/1) ... [2022-10-17 10:59:38,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:38" (1/1) ... [2022-10-17 10:59:38,248 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 162 [2022-10-17 10:59:38,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:59:38,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:59:38,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:59:38,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:59:38,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:38" (1/1) ... [2022-10-17 10:59:38,260 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:38" (1/1) ... [2022-10-17 10:59:38,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:38" (1/1) ... [2022-10-17 10:59:38,280 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:38" (1/1) ... [2022-10-17 10:59:38,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:38" (1/1) ... [2022-10-17 10:59:38,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:38" (1/1) ... [2022-10-17 10:59:38,306 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:38" (1/1) ... [2022-10-17 10:59:38,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:38" (1/1) ... [2022-10-17 10:59:38,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:59:38,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:59:38,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:59:38,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:59:38,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:38" (1/1) ... [2022-10-17 10:59:38,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:59:38,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:59:38,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:59:38,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:59:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:59:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:59:38,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:59:38,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:59:38,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:59:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:59:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:59:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:59:38,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:59:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:59:38,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:59:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:59:38,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:59:38,428 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:59:38,565 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:59:38,568 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:59:38,963 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:59:38,989 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:59:38,990 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 10:59:38,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:59:38 BoogieIcfgContainer [2022-10-17 10:59:38,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:59:38,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:59:38,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:59:38,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:59:38,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:59:37" (1/3) ... [2022-10-17 10:59:39,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fb95f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:59:38, skipping insertion in model container [2022-10-17 10:59:39,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:59:38" (2/3) ... [2022-10-17 10:59:39,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fb95f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:59:39, skipping insertion in model container [2022-10-17 10:59:39,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:59:38" (3/3) ... [2022-10-17 10:59:39,002 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2022-10-17 10:59:39,012 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:59:39,023 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:59:39,024 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:59:39,024 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:59:39,122 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-10-17 10:59:39,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 209 transitions, 434 flow [2022-10-17 10:59:39,298 INFO L130 PetriNetUnfolder]: 18/207 cut-off events. [2022-10-17 10:59:39,298 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:59:39,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 207 events. 18/207 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 319 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2022-10-17 10:59:39,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 209 transitions, 434 flow [2022-10-17 10:59:39,324 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 198 transitions, 408 flow [2022-10-17 10:59:39,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:59:39,365 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;@24e93ff7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:59:39,366 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-10-17 10:59:39,414 INFO L130 PetriNetUnfolder]: 16/181 cut-off events. [2022-10-17 10:59:39,414 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-10-17 10:59:39,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:39,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:39,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:59:39,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:39,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2043723559, now seen corresponding path program 1 times [2022-10-17 10:59:39,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:39,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941703384] [2022-10-17 10:59:39,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:39,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:39,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:39,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:39,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941703384] [2022-10-17 10:59:39,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941703384] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:39,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:39,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:59:39,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913210381] [2022-10-17 10:59:39,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:39,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:59:39,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:59:39,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:59:39,933 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 209 [2022-10-17 10:59:39,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 198 transitions, 408 flow. Second operand has 2 states, 2 states have (on average 193.5) internal successors, (387), 2 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:39,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:39,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 209 [2022-10-17 10:59:39,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:40,014 INFO L130 PetriNetUnfolder]: 5/185 cut-off events. [2022-10-17 10:59:40,015 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-10-17 10:59:40,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 185 events. 5/185 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 281 event pairs, 0 based on Foata normal form. 16/186 useless extension candidates. Maximal degree in co-relation 104. Up to 5 conditions per place. [2022-10-17 10:59:40,019 INFO L137 encePairwiseOnDemand]: 196/209 looper letters, 4 selfloop transitions, 0 changer transitions 4/185 dead transitions. [2022-10-17 10:59:40,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 185 transitions, 390 flow [2022-10-17 10:59:40,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:59:40,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:59:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 399 transitions. [2022-10-17 10:59:40,037 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9545454545454546 [2022-10-17 10:59:40,038 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 399 transitions. [2022-10-17 10:59:40,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 399 transitions. [2022-10-17 10:59:40,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:40,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 399 transitions. [2022-10-17 10:59:40,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 199.5) internal successors, (399), 2 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:40,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:40,058 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:40,060 INFO L175 Difference]: Start difference. First operand has 187 places, 198 transitions, 408 flow. Second operand 2 states and 399 transitions. [2022-10-17 10:59:40,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 185 transitions, 390 flow [2022-10-17 10:59:40,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 185 transitions, 382 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:59:40,072 INFO L231 Difference]: Finished difference. Result has 184 places, 181 transitions, 366 flow [2022-10-17 10:59:40,075 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=366, PETRI_PLACES=184, PETRI_TRANSITIONS=181} [2022-10-17 10:59:40,079 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, -3 predicate places. [2022-10-17 10:59:40,080 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 181 transitions, 366 flow [2022-10-17 10:59:40,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 193.5) internal successors, (387), 2 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:40,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:40,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:40,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:59:40,082 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:59:40,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:40,083 INFO L85 PathProgramCache]: Analyzing trace with hash 317017016, now seen corresponding path program 1 times [2022-10-17 10:59:40,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:40,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935941026] [2022-10-17 10:59:40,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:40,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:40,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:40,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935941026] [2022-10-17 10:59:40,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935941026] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:40,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:40,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:59:40,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859635329] [2022-10-17 10:59:40,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:40,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:59:40,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:40,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:59:40,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:59:40,759 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 209 [2022-10-17 10:59:40,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 181 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:40,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:40,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 209 [2022-10-17 10:59:40,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:41,062 INFO L130 PetriNetUnfolder]: 158/782 cut-off events. [2022-10-17 10:59:41,062 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-10-17 10:59:41,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 782 events. 158/782 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3974 event pairs, 34 based on Foata normal form. 0/661 useless extension candidates. Maximal degree in co-relation 1053. Up to 169 conditions per place. [2022-10-17 10:59:41,075 INFO L137 encePairwiseOnDemand]: 202/209 looper letters, 39 selfloop transitions, 7 changer transitions 0/202 dead transitions. [2022-10-17 10:59:41,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 202 transitions, 502 flow [2022-10-17 10:59:41,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:59:41,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-10-17 10:59:41,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 727 transitions. [2022-10-17 10:59:41,082 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8696172248803827 [2022-10-17 10:59:41,082 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 727 transitions. [2022-10-17 10:59:41,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 727 transitions. [2022-10-17 10:59:41,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:41,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 727 transitions. [2022-10-17 10:59:41,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:41,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:41,093 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:41,093 INFO L175 Difference]: Start difference. First operand has 184 places, 181 transitions, 366 flow. Second operand 4 states and 727 transitions. [2022-10-17 10:59:41,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 202 transitions, 502 flow [2022-10-17 10:59:41,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 202 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:59:41,104 INFO L231 Difference]: Finished difference. Result has 185 places, 187 transitions, 413 flow [2022-10-17 10:59:41,105 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=413, PETRI_PLACES=185, PETRI_TRANSITIONS=187} [2022-10-17 10:59:41,106 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, -2 predicate places. [2022-10-17 10:59:41,106 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 187 transitions, 413 flow [2022-10-17 10:59:41,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:41,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:41,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:41,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:59:41,109 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:59:41,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:41,110 INFO L85 PathProgramCache]: Analyzing trace with hash -282437434, now seen corresponding path program 1 times [2022-10-17 10:59:41,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:41,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585204378] [2022-10-17 10:59:41,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:41,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:41,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:41,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585204378] [2022-10-17 10:59:41,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585204378] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:41,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:41,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:59:41,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156603666] [2022-10-17 10:59:41,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:41,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:59:41,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:41,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:59:41,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:59:41,642 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 209 [2022-10-17 10:59:41,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 187 transitions, 413 flow. Second operand has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:41,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:41,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 209 [2022-10-17 10:59:41,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:42,198 INFO L130 PetriNetUnfolder]: 366/1796 cut-off events. [2022-10-17 10:59:42,198 INFO L131 PetriNetUnfolder]: For 193/195 co-relation queries the response was YES. [2022-10-17 10:59:42,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2737 conditions, 1796 events. 366/1796 cut-off events. For 193/195 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13052 event pairs, 130 based on Foata normal form. 2/1652 useless extension candidates. Maximal degree in co-relation 2731. Up to 371 conditions per place. [2022-10-17 10:59:42,244 INFO L137 encePairwiseOnDemand]: 201/209 looper letters, 83 selfloop transitions, 7 changer transitions 0/243 dead transitions. [2022-10-17 10:59:42,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 243 transitions, 774 flow [2022-10-17 10:59:42,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:59:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:59:42,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1077 transitions. [2022-10-17 10:59:42,250 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8588516746411483 [2022-10-17 10:59:42,250 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1077 transitions. [2022-10-17 10:59:42,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1077 transitions. [2022-10-17 10:59:42,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:42,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1077 transitions. [2022-10-17 10:59:42,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 179.5) internal successors, (1077), 6 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:42,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:42,262 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:42,263 INFO L175 Difference]: Start difference. First operand has 185 places, 187 transitions, 413 flow. Second operand 6 states and 1077 transitions. [2022-10-17 10:59:42,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 243 transitions, 774 flow [2022-10-17 10:59:42,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 243 transitions, 774 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:59:42,277 INFO L231 Difference]: Finished difference. Result has 193 places, 191 transitions, 459 flow [2022-10-17 10:59:42,278 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=459, PETRI_PLACES=193, PETRI_TRANSITIONS=191} [2022-10-17 10:59:42,281 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 6 predicate places. [2022-10-17 10:59:42,281 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 191 transitions, 459 flow [2022-10-17 10:59:42,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:42,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:42,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:42,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:59:42,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:59:42,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:42,284 INFO L85 PathProgramCache]: Analyzing trace with hash 749567470, now seen corresponding path program 2 times [2022-10-17 10:59:42,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:42,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79007716] [2022-10-17 10:59:42,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:42,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:42,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:42,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79007716] [2022-10-17 10:59:42,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79007716] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:42,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:42,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:59:42,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334734899] [2022-10-17 10:59:42,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:42,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:59:42,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:42,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:59:42,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:59:42,855 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 209 [2022-10-17 10:59:42,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 191 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:42,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:42,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 209 [2022-10-17 10:59:42,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:43,468 INFO L130 PetriNetUnfolder]: 407/2024 cut-off events. [2022-10-17 10:59:43,469 INFO L131 PetriNetUnfolder]: For 546/548 co-relation queries the response was YES. [2022-10-17 10:59:43,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3326 conditions, 2024 events. 407/2024 cut-off events. For 546/548 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 15263 event pairs, 184 based on Foata normal form. 10/1900 useless extension candidates. Maximal degree in co-relation 3316. Up to 407 conditions per place. [2022-10-17 10:59:43,492 INFO L137 encePairwiseOnDemand]: 201/209 looper letters, 71 selfloop transitions, 13 changer transitions 0/237 dead transitions. [2022-10-17 10:59:43,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 237 transitions, 791 flow [2022-10-17 10:59:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:59:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:59:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1244 transitions. [2022-10-17 10:59:43,498 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8503075871496925 [2022-10-17 10:59:43,498 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1244 transitions. [2022-10-17 10:59:43,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1244 transitions. [2022-10-17 10:59:43,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:43,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1244 transitions. [2022-10-17 10:59:43,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 177.71428571428572) internal successors, (1244), 7 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:43,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 209.0) internal successors, (1672), 8 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:43,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 209.0) internal successors, (1672), 8 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:43,516 INFO L175 Difference]: Start difference. First operand has 193 places, 191 transitions, 459 flow. Second operand 7 states and 1244 transitions. [2022-10-17 10:59:43,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 237 transitions, 791 flow [2022-10-17 10:59:43,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 237 transitions, 765 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-10-17 10:59:43,533 INFO L231 Difference]: Finished difference. Result has 202 places, 196 transitions, 534 flow [2022-10-17 10:59:43,534 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=534, PETRI_PLACES=202, PETRI_TRANSITIONS=196} [2022-10-17 10:59:43,536 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 15 predicate places. [2022-10-17 10:59:43,536 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 534 flow [2022-10-17 10:59:43,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:43,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:43,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:43,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:59:43,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:59:43,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:43,541 INFO L85 PathProgramCache]: Analyzing trace with hash 21117964, now seen corresponding path program 3 times [2022-10-17 10:59:43,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:43,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455474708] [2022-10-17 10:59:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:43,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:43,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:43,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:43,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455474708] [2022-10-17 10:59:43,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455474708] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:43,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:43,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:59:43,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957667539] [2022-10-17 10:59:43,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:43,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:59:43,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:43,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:59:43,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:59:43,878 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 209 [2022-10-17 10:59:43,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 534 flow. Second operand has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:43,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:43,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 209 [2022-10-17 10:59:43,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:44,507 INFO L130 PetriNetUnfolder]: 440/2219 cut-off events. [2022-10-17 10:59:44,507 INFO L131 PetriNetUnfolder]: For 1416/1428 co-relation queries the response was YES. [2022-10-17 10:59:44,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3946 conditions, 2219 events. 440/2219 cut-off events. For 1416/1428 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 17142 event pairs, 226 based on Foata normal form. 3/2051 useless extension candidates. Maximal degree in co-relation 3931. Up to 404 conditions per place. [2022-10-17 10:59:44,530 INFO L137 encePairwiseOnDemand]: 202/209 looper letters, 77 selfloop transitions, 16 changer transitions 0/246 dead transitions. [2022-10-17 10:59:44,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 246 transitions, 960 flow [2022-10-17 10:59:44,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:59:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:59:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 907 transitions. [2022-10-17 10:59:44,534 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8679425837320575 [2022-10-17 10:59:44,534 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 907 transitions. [2022-10-17 10:59:44,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 907 transitions. [2022-10-17 10:59:44,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:44,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 907 transitions. [2022-10-17 10:59:44,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:44,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 209.0) internal successors, (1254), 6 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:44,542 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 209.0) internal successors, (1254), 6 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:44,543 INFO L175 Difference]: Start difference. First operand has 202 places, 196 transitions, 534 flow. Second operand 5 states and 907 transitions. [2022-10-17 10:59:44,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 246 transitions, 960 flow [2022-10-17 10:59:44,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 246 transitions, 949 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:59:44,556 INFO L231 Difference]: Finished difference. Result has 208 places, 204 transitions, 672 flow [2022-10-17 10:59:44,557 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=672, PETRI_PLACES=208, PETRI_TRANSITIONS=204} [2022-10-17 10:59:44,560 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 21 predicate places. [2022-10-17 10:59:44,561 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 204 transitions, 672 flow [2022-10-17 10:59:44,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:44,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:44,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:44,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:59:44,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:59:44,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:44,564 INFO L85 PathProgramCache]: Analyzing trace with hash 336336672, now seen corresponding path program 4 times [2022-10-17 10:59:44,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:44,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297549032] [2022-10-17 10:59:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:44,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:45,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:45,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297549032] [2022-10-17 10:59:45,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297549032] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:45,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:45,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:59:45,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988865425] [2022-10-17 10:59:45,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:45,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:59:45,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:45,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:59:45,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:59:45,058 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 209 [2022-10-17 10:59:45,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 204 transitions, 672 flow. Second operand has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:45,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:45,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 209 [2022-10-17 10:59:45,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:45,688 INFO L130 PetriNetUnfolder]: 439/2238 cut-off events. [2022-10-17 10:59:45,688 INFO L131 PetriNetUnfolder]: For 2173/2175 co-relation queries the response was YES. [2022-10-17 10:59:45,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4223 conditions, 2238 events. 439/2238 cut-off events. For 2173/2175 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 17468 event pairs, 185 based on Foata normal form. 8/2067 useless extension candidates. Maximal degree in co-relation 4205. Up to 409 conditions per place. [2022-10-17 10:59:45,714 INFO L137 encePairwiseOnDemand]: 202/209 looper letters, 78 selfloop transitions, 18 changer transitions 0/249 dead transitions. [2022-10-17 10:59:45,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 249 transitions, 1056 flow [2022-10-17 10:59:45,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:59:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:59:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1078 transitions. [2022-10-17 10:59:45,719 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8596491228070176 [2022-10-17 10:59:45,720 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1078 transitions. [2022-10-17 10:59:45,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1078 transitions. [2022-10-17 10:59:45,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:45,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1078 transitions. [2022-10-17 10:59:45,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 179.66666666666666) internal successors, (1078), 6 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:45,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:45,730 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:45,730 INFO L175 Difference]: Start difference. First operand has 208 places, 204 transitions, 672 flow. Second operand 6 states and 1078 transitions. [2022-10-17 10:59:45,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 249 transitions, 1056 flow [2022-10-17 10:59:45,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 249 transitions, 1029 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-10-17 10:59:45,747 INFO L231 Difference]: Finished difference. Result has 215 places, 207 transitions, 737 flow [2022-10-17 10:59:45,748 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=737, PETRI_PLACES=215, PETRI_TRANSITIONS=207} [2022-10-17 10:59:45,749 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 28 predicate places. [2022-10-17 10:59:45,749 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 207 transitions, 737 flow [2022-10-17 10:59:45,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:45,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:45,751 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:45,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:59:45,752 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:59:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:45,752 INFO L85 PathProgramCache]: Analyzing trace with hash 985345640, now seen corresponding path program 5 times [2022-10-17 10:59:45,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:45,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197202494] [2022-10-17 10:59:45,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:45,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:46,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:46,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:46,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197202494] [2022-10-17 10:59:46,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197202494] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:46,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:46,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:59:46,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346529729] [2022-10-17 10:59:46,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:46,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:59:46,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:46,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:59:46,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:59:46,055 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 209 [2022-10-17 10:59:46,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 207 transitions, 737 flow. Second operand has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:46,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:46,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 209 [2022-10-17 10:59:46,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:46,662 INFO L130 PetriNetUnfolder]: 447/2246 cut-off events. [2022-10-17 10:59:46,663 INFO L131 PetriNetUnfolder]: For 2674/2676 co-relation queries the response was YES. [2022-10-17 10:59:46,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4311 conditions, 2246 events. 447/2246 cut-off events. For 2674/2676 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 17466 event pairs, 239 based on Foata normal form. 4/2076 useless extension candidates. Maximal degree in co-relation 4290. Up to 584 conditions per place. [2022-10-17 10:59:46,690 INFO L137 encePairwiseOnDemand]: 202/209 looper letters, 63 selfloop transitions, 22 changer transitions 0/238 dead transitions. [2022-10-17 10:59:46,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 238 transitions, 1084 flow [2022-10-17 10:59:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:59:46,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:59:46,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 895 transitions. [2022-10-17 10:59:46,694 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8564593301435407 [2022-10-17 10:59:46,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 895 transitions. [2022-10-17 10:59:46,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 895 transitions. [2022-10-17 10:59:46,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:46,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 895 transitions. [2022-10-17 10:59:46,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:46,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 209.0) internal successors, (1254), 6 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:46,702 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 209.0) internal successors, (1254), 6 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:46,702 INFO L175 Difference]: Start difference. First operand has 215 places, 207 transitions, 737 flow. Second operand 5 states and 895 transitions. [2022-10-17 10:59:46,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 238 transitions, 1084 flow [2022-10-17 10:59:46,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 238 transitions, 1053 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-10-17 10:59:46,723 INFO L231 Difference]: Finished difference. Result has 220 places, 215 transitions, 880 flow [2022-10-17 10:59:46,724 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=880, PETRI_PLACES=220, PETRI_TRANSITIONS=215} [2022-10-17 10:59:46,725 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 33 predicate places. [2022-10-17 10:59:46,725 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 215 transitions, 880 flow [2022-10-17 10:59:46,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:46,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:46,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:46,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:59:46,726 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:59:46,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:46,727 INFO L85 PathProgramCache]: Analyzing trace with hash 720558838, now seen corresponding path program 6 times [2022-10-17 10:59:46,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:46,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76521161] [2022-10-17 10:59:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:46,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:47,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:47,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76521161] [2022-10-17 10:59:47,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76521161] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:47,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:47,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:59:47,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827739832] [2022-10-17 10:59:47,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:47,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:59:47,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:47,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:59:47,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:59:47,205 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 209 [2022-10-17 10:59:47,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 215 transitions, 880 flow. Second operand has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:47,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:47,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 209 [2022-10-17 10:59:47,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:47,794 INFO L130 PetriNetUnfolder]: 431/2163 cut-off events. [2022-10-17 10:59:47,795 INFO L131 PetriNetUnfolder]: For 3136/3138 co-relation queries the response was YES. [2022-10-17 10:59:47,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4233 conditions, 2163 events. 431/2163 cut-off events. For 3136/3138 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 16642 event pairs, 229 based on Foata normal form. 10/2010 useless extension candidates. Maximal degree in co-relation 4209. Up to 538 conditions per place. [2022-10-17 10:59:47,823 INFO L137 encePairwiseOnDemand]: 202/209 looper letters, 68 selfloop transitions, 24 changer transitions 0/245 dead transitions. [2022-10-17 10:59:47,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 245 transitions, 1176 flow [2022-10-17 10:59:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:59:47,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:59:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1070 transitions. [2022-10-17 10:59:47,831 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8532695374800638 [2022-10-17 10:59:47,831 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1070 transitions. [2022-10-17 10:59:47,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1070 transitions. [2022-10-17 10:59:47,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:47,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1070 transitions. [2022-10-17 10:59:47,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.33333333333334) internal successors, (1070), 6 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:47,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:47,840 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:47,840 INFO L175 Difference]: Start difference. First operand has 220 places, 215 transitions, 880 flow. Second operand 6 states and 1070 transitions. [2022-10-17 10:59:47,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 245 transitions, 1176 flow [2022-10-17 10:59:47,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 245 transitions, 1136 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-10-17 10:59:47,860 INFO L231 Difference]: Finished difference. Result has 227 places, 218 transitions, 954 flow [2022-10-17 10:59:47,861 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=954, PETRI_PLACES=227, PETRI_TRANSITIONS=218} [2022-10-17 10:59:47,863 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 40 predicate places. [2022-10-17 10:59:47,863 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 218 transitions, 954 flow [2022-10-17 10:59:47,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:47,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:47,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:47,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:59:47,865 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:59:47,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:47,866 INFO L85 PathProgramCache]: Analyzing trace with hash 860208179, now seen corresponding path program 1 times [2022-10-17 10:59:47,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:47,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242651077] [2022-10-17 10:59:47,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:47,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:48,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:48,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:48,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242651077] [2022-10-17 10:59:48,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242651077] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:59:48,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175249279] [2022-10-17 10:59:48,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:48,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:59:48,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:59:48,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:59:48,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:59:48,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:48,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-17 10:59:48,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:59:49,398 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 10:59:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:49,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:59:49,628 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-10-17 10:59:49,628 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-10-17 10:59:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:49,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175249279] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:59:49,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:59:49,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 9] total 23 [2022-10-17 10:59:49,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910229832] [2022-10-17 10:59:49,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:59:49,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-10-17 10:59:49,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:49,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-10-17 10:59:49,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2022-10-17 10:59:49,754 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 209 [2022-10-17 10:59:49,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 218 transitions, 954 flow. Second operand has 23 states, 23 states have (on average 113.17391304347827) internal successors, (2603), 23 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:49,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:49,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 209 [2022-10-17 10:59:49,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:56,780 INFO L130 PetriNetUnfolder]: 7206/16910 cut-off events. [2022-10-17 10:59:56,780 INFO L131 PetriNetUnfolder]: For 21287/21287 co-relation queries the response was YES. [2022-10-17 10:59:56,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36754 conditions, 16910 events. 7206/16910 cut-off events. For 21287/21287 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 158012 event pairs, 393 based on Foata normal form. 33/16077 useless extension candidates. Maximal degree in co-relation 36727. Up to 3162 conditions per place. [2022-10-17 10:59:56,944 INFO L137 encePairwiseOnDemand]: 177/209 looper letters, 673 selfloop transitions, 139 changer transitions 8/916 dead transitions. [2022-10-17 10:59:56,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 916 transitions, 5579 flow [2022-10-17 10:59:56,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-10-17 10:59:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-10-17 10:59:56,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 6235 transitions. [2022-10-17 10:59:56,966 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5737026131762973 [2022-10-17 10:59:56,967 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 6235 transitions. [2022-10-17 10:59:56,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 6235 transitions. [2022-10-17 10:59:56,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:56,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 6235 transitions. [2022-10-17 10:59:56,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 119.90384615384616) internal successors, (6235), 52 states have internal predecessors, (6235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:57,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 209.0) internal successors, (11077), 53 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:57,021 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 209.0) internal successors, (11077), 53 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:57,021 INFO L175 Difference]: Start difference. First operand has 227 places, 218 transitions, 954 flow. Second operand 52 states and 6235 transitions. [2022-10-17 10:59:57,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 916 transitions, 5579 flow [2022-10-17 10:59:57,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 916 transitions, 5384 flow, removed 29 selfloop flow, removed 2 redundant places. [2022-10-17 10:59:57,227 INFO L231 Difference]: Finished difference. Result has 307 places, 361 transitions, 2051 flow [2022-10-17 10:59:57,228 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2051, PETRI_PLACES=307, PETRI_TRANSITIONS=361} [2022-10-17 10:59:57,229 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 120 predicate places. [2022-10-17 10:59:57,229 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 361 transitions, 2051 flow [2022-10-17 10:59:57,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 113.17391304347827) internal successors, (2603), 23 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:57,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:57,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:57,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:59:57,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-10-17 10:59:57,467 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 10:59:57,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:57,468 INFO L85 PathProgramCache]: Analyzing trace with hash -782013607, now seen corresponding path program 2 times [2022-10-17 10:59:57,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:57,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194900282] [2022-10-17 10:59:57,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:57,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:57,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:58,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:58,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194900282] [2022-10-17 10:59:58,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194900282] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:59:58,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781051650] [2022-10-17 10:59:58,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:59:58,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:59:58,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:59:58,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:59:58,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:59:58,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 10:59:58,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:59:58,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:59:58,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:59:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:59:58,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:59:58,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781051650] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:58,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:59:58,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2022-10-17 10:59:58,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009038906] [2022-10-17 10:59:58,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:58,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:59:58,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:58,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:59:58,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:59:58,562 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 209 [2022-10-17 10:59:58,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 361 transitions, 2051 flow. Second operand has 9 states, 9 states have (on average 140.66666666666666) internal successors, (1266), 9 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:58,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:58,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 209 [2022-10-17 10:59:58,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 11:00:00,020 INFO L130 PetriNetUnfolder]: 1115/5316 cut-off events. [2022-10-17 11:00:00,021 INFO L131 PetriNetUnfolder]: For 9429/9526 co-relation queries the response was YES. [2022-10-17 11:00:00,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12377 conditions, 5316 events. 1115/5316 cut-off events. For 9429/9526 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 53054 event pairs, 260 based on Foata normal form. 15/4978 useless extension candidates. Maximal degree in co-relation 12319. Up to 1393 conditions per place. [2022-10-17 11:00:00,101 INFO L137 encePairwiseOnDemand]: 188/209 looper letters, 94 selfloop transitions, 54 changer transitions 19/412 dead transitions. [2022-10-17 11:00:00,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 412 transitions, 2531 flow [2022-10-17 11:00:00,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 11:00:00,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-10-17 11:00:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1756 transitions. [2022-10-17 11:00:00,108 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7001594896331739 [2022-10-17 11:00:00,109 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1756 transitions. [2022-10-17 11:00:00,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1756 transitions. [2022-10-17 11:00:00,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 11:00:00,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1756 transitions. [2022-10-17 11:00:00,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 146.33333333333334) internal successors, (1756), 12 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:00,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 209.0) internal successors, (2717), 13 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:00,123 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 209.0) internal successors, (2717), 13 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:00,123 INFO L175 Difference]: Start difference. First operand has 307 places, 361 transitions, 2051 flow. Second operand 12 states and 1756 transitions. [2022-10-17 11:00:00,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 412 transitions, 2531 flow [2022-10-17 11:00:00,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 412 transitions, 2436 flow, removed 22 selfloop flow, removed 10 redundant places. [2022-10-17 11:00:00,221 INFO L231 Difference]: Finished difference. Result has 311 places, 376 transitions, 2205 flow [2022-10-17 11:00:00,222 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2205, PETRI_PLACES=311, PETRI_TRANSITIONS=376} [2022-10-17 11:00:00,223 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 124 predicate places. [2022-10-17 11:00:00,223 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 376 transitions, 2205 flow [2022-10-17 11:00:00,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 140.66666666666666) internal successors, (1266), 9 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:00,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 11:00:00,224 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:00:00,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 11:00:00,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 11:00:00,439 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-17 11:00:00,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:00:00,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1969625793, now seen corresponding path program 1 times [2022-10-17 11:00:00,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:00:00,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070896539] [2022-10-17 11:00:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:00,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:00:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:00:01,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:00:01,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070896539] [2022-10-17 11:00:01,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070896539] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:00:01,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252723159] [2022-10-17 11:00:01,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:00:01,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:00:01,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:00:01,083 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:00:01,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e22cd6c-189b-4f54-ad49-51ee18709b37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 11:00:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:00:01,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 27 conjunts are in the unsatisfiable core [2022-10-17 11:00:01,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:00:01,752 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 11:00:01,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:00:01,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:00:01,958 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-10-17 11:00:01,958 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-10-17 11:00:02,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:00:02,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252723159] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:00:02,164 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 11:00:02,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 9] total 22 [2022-10-17 11:00:02,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470583024] [2022-10-17 11:00:02,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 11:00:02,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-17 11:00:02,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:00:02,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-17 11:00:02,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2022-10-17 11:00:02,170 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 209 [2022-10-17 11:00:02,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 376 transitions, 2205 flow. Second operand has 22 states, 22 states have (on average 113.27272727272727) internal successors, (2492), 22 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:00:02,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 11:00:02,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 209 [2022-10-17 11:00:02,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand