./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.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_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/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_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/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_686b0ece-c361-4365-8f87-c8af994da8df/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 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 --- 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 10:16:09,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:16:09,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:16:09,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:16:09,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:16:09,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:16:09,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:16:09,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:16:09,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:16:09,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:16:09,253 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:16:09,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:16:09,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:16:09,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:16:09,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:16:09,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:16:09,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:16:09,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:16:09,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:16:09,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:16:09,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:16:09,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:16:09,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:16:09,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:16:09,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:16:09,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:16:09,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:16:09,288 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:16:09,289 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:16:09,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:16:09,292 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:16:09,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:16:09,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:16:09,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:16:09,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:16:09,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:16:09,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:16:09,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:16:09,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:16:09,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:16:09,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:16:09,305 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:16:09,351 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:16:09,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:16:09,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:16:09,352 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:16:09,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:16:09,353 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:16:09,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:16:09,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:16:09,355 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:16:09,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:16:09,356 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:16:09,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:16:09,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:16:09,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:16:09,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:16:09,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:16:09,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:16:09,358 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:16:09,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:16:09,358 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:16:09,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:16:09,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:16:09,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:16:09,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:16:09,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:16:09,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:16:09,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:16:09,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:16:09,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:16:09,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:16:09,363 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:16:09,363 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:16:09,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:16:09,364 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_686b0ece-c361-4365-8f87-c8af994da8df/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 [2022-10-17 10:16:09,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:16:09,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:16:09,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:16:09,707 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:16:09,708 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:16:09,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-10-17 10:16:09,773 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/data/0274b8bc7/a069242771b04cfa986397f15e662b5f/FLAGa1ed91f43 [2022-10-17 10:16:10,218 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:16:10,219 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-10-17 10:16:10,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/data/0274b8bc7/a069242771b04cfa986397f15e662b5f/FLAGa1ed91f43 [2022-10-17 10:16:10,243 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/data/0274b8bc7/a069242771b04cfa986397f15e662b5f [2022-10-17 10:16:10,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:16:10,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:16:10,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:16:10,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:16:10,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:16:10,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:16:10" (1/1) ... [2022-10-17 10:16:10,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a495af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:10, skipping insertion in model container [2022-10-17 10:16:10,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:16:10" (1/1) ... [2022-10-17 10:16:10,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:16:10,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:16:10,545 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_686b0ece-c361-4365-8f87-c8af994da8df/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-10-17 10:16:10,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:16:10,562 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:16:10,590 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_686b0ece-c361-4365-8f87-c8af994da8df/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-10-17 10:16:10,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:16:10,614 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:16:10,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:10 WrapperNode [2022-10-17 10:16:10,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:16:10,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:16:10,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:16:10,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:16:10,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:10" (1/1) ... [2022-10-17 10:16:10,645 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:10" (1/1) ... [2022-10-17 10:16:10,683 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 122 [2022-10-17 10:16:10,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:16:10,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:16:10,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:16:10,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:16:10,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:10" (1/1) ... [2022-10-17 10:16:10,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:10" (1/1) ... [2022-10-17 10:16:10,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:10" (1/1) ... [2022-10-17 10:16:10,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:10" (1/1) ... [2022-10-17 10:16:10,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:10" (1/1) ... [2022-10-17 10:16:10,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:10" (1/1) ... [2022-10-17 10:16:10,723 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:10" (1/1) ... [2022-10-17 10:16:10,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:10" (1/1) ... [2022-10-17 10:16:10,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:16:10,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:16:10,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:16:10,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:16:10,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:10" (1/1) ... [2022-10-17 10:16:10,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:16:10,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:16:10,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:16:10,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:16:10,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:16:10,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:16:10,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:16:10,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:16:10,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:16:10,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:16:10,811 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:16:10,811 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:16:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 10:16:10,812 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 10:16:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:16:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:16:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:16:10,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:16:10,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:16:10,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:16:10,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:16:10,814 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 10:16:10,917 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:16:10,919 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:16:11,370 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:16:11,453 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:16:11,453 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-17 10:16:11,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:16:11 BoogieIcfgContainer [2022-10-17 10:16:11,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:16:11,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:16:11,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:16:11,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:16:11,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:16:10" (1/3) ... [2022-10-17 10:16:11,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33140f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:16:11, skipping insertion in model container [2022-10-17 10:16:11,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:10" (2/3) ... [2022-10-17 10:16:11,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33140f19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:16:11, skipping insertion in model container [2022-10-17 10:16:11,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:16:11" (3/3) ... [2022-10-17 10:16:11,467 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2022-10-17 10:16:11,477 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:16:11,488 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:16:11,488 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:16:11,489 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:16:11,574 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-10-17 10:16:11,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 176 transitions, 376 flow [2022-10-17 10:16:11,783 INFO L130 PetriNetUnfolder]: 12/173 cut-off events. [2022-10-17 10:16:11,784 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:16:11,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 173 events. 12/173 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2022-10-17 10:16:11,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 176 transitions, 376 flow [2022-10-17 10:16:11,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 162 transitions, 342 flow [2022-10-17 10:16:11,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:16:11,827 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;@31b7f452, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:16:11,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:16:11,895 INFO L130 PetriNetUnfolder]: 12/161 cut-off events. [2022-10-17 10:16:11,895 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:16:11,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:11,897 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, 1, 1, 1, 1, 1] [2022-10-17 10:16:11,898 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:16:11,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1064113817, now seen corresponding path program 1 times [2022-10-17 10:16:11,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:11,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842566405] [2022-10-17 10:16:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:11,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:12,282 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 10:16:12,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:12,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842566405] [2022-10-17 10:16:12,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842566405] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:12,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:12,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:16:12,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088786366] [2022-10-17 10:16:12,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:12,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:16:12,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:12,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:16:12,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:16:12,330 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 176 [2022-10-17 10:16:12,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 162 transitions, 342 flow. Second operand has 2 states, 2 states have (on average 162.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 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 10:16:12,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:12,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 176 [2022-10-17 10:16:12,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:12,442 INFO L130 PetriNetUnfolder]: 32/262 cut-off events. [2022-10-17 10:16:12,443 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-10-17 10:16:12,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 262 events. 32/262 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 663 event pairs, 20 based on Foata normal form. 18/254 useless extension candidates. Maximal degree in co-relation 197. Up to 47 conditions per place. [2022-10-17 10:16:12,447 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 10 selfloop transitions, 0 changer transitions 5/154 dead transitions. [2022-10-17 10:16:12,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 154 transitions, 346 flow [2022-10-17 10:16:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:16:12,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:16:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 332 transitions. [2022-10-17 10:16:12,464 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9431818181818182 [2022-10-17 10:16:12,465 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 332 transitions. [2022-10-17 10:16:12,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 332 transitions. [2022-10-17 10:16:12,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:12,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 332 transitions. [2022-10-17 10:16:12,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 166.0) internal successors, (332), 2 states have internal predecessors, (332), 0 states have call successors, (0), 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 10:16:12,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 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 10:16:12,481 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 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 10:16:12,484 INFO L175 Difference]: Start difference. First operand has 160 places, 162 transitions, 342 flow. Second operand 2 states and 332 transitions. [2022-10-17 10:16:12,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 154 transitions, 346 flow [2022-10-17 10:16:12,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 154 transitions, 334 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-10-17 10:16:12,495 INFO L231 Difference]: Finished difference. Result has 155 places, 149 transitions, 304 flow [2022-10-17 10:16:12,498 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=304, PETRI_PLACES=155, PETRI_TRANSITIONS=149} [2022-10-17 10:16:12,502 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, -5 predicate places. [2022-10-17 10:16:12,502 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 149 transitions, 304 flow [2022-10-17 10:16:12,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 162.0) internal successors, (324), 2 states have internal predecessors, (324), 0 states have call successors, (0), 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 10:16:12,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:12,503 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, 1, 1, 1, 1, 1] [2022-10-17 10:16:12,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:16:12,504 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:16:12,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:12,505 INFO L85 PathProgramCache]: Analyzing trace with hash -661841237, now seen corresponding path program 1 times [2022-10-17 10:16:12,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:12,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605309015] [2022-10-17 10:16:12,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:12,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:13,052 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 10:16:13,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:13,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605309015] [2022-10-17 10:16:13,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605309015] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:13,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:13,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:16:13,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770171567] [2022-10-17 10:16:13,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:13,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:16:13,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:13,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:16:13,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:13,059 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 176 [2022-10-17 10:16:13,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 149 transitions, 304 flow. Second operand has 5 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 0 states have call successors, (0), 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 10:16:13,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:13,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 176 [2022-10-17 10:16:13,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:13,209 INFO L130 PetriNetUnfolder]: 31/261 cut-off events. [2022-10-17 10:16:13,209 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-10-17 10:16:13,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 352 conditions, 261 events. 31/261 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 650 event pairs, 20 based on Foata normal form. 1/241 useless extension candidates. Maximal degree in co-relation 349. Up to 72 conditions per place. [2022-10-17 10:16:13,212 INFO L137 encePairwiseOnDemand]: 172/176 looper letters, 35 selfloop transitions, 0 changer transitions 4/152 dead transitions. [2022-10-17 10:16:13,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 152 transitions, 388 flow [2022-10-17 10:16:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:16:13,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:16:13,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 670 transitions. [2022-10-17 10:16:13,218 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7613636363636364 [2022-10-17 10:16:13,218 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 670 transitions. [2022-10-17 10:16:13,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 670 transitions. [2022-10-17 10:16:13,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:13,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 670 transitions. [2022-10-17 10:16:13,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.0) internal successors, (670), 5 states have internal predecessors, (670), 0 states have call successors, (0), 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 10:16:13,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 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 10:16:13,227 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 0 states have call successors, (0), 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 10:16:13,227 INFO L175 Difference]: Start difference. First operand has 155 places, 149 transitions, 304 flow. Second operand 5 states and 670 transitions. [2022-10-17 10:16:13,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 152 transitions, 388 flow [2022-10-17 10:16:13,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 152 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:16:13,233 INFO L231 Difference]: Finished difference. Result has 157 places, 148 transitions, 308 flow [2022-10-17 10:16:13,234 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=308, PETRI_PLACES=157, PETRI_TRANSITIONS=148} [2022-10-17 10:16:13,235 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, -3 predicate places. [2022-10-17 10:16:13,235 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 148 transitions, 308 flow [2022-10-17 10:16:13,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 0 states have call successors, (0), 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 10:16:13,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:13,237 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, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:13,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:16:13,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:16:13,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:13,238 INFO L85 PathProgramCache]: Analyzing trace with hash -896043392, now seen corresponding path program 1 times [2022-10-17 10:16:13,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:13,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713153809] [2022-10-17 10:16:13,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:13,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:13,655 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 10:16:13,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:13,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713153809] [2022-10-17 10:16:13,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713153809] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:13,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:13,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:16:13,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909098265] [2022-10-17 10:16:13,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:13,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:16:13,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:13,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:16:13,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:16:13,664 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 176 [2022-10-17 10:16:13,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 148 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 127.66666666666667) internal successors, (766), 6 states have internal predecessors, (766), 0 states have call successors, (0), 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 10:16:13,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:13,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 176 [2022-10-17 10:16:13,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:13,917 INFO L130 PetriNetUnfolder]: 184/687 cut-off events. [2022-10-17 10:16:13,917 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-10-17 10:16:13,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1082 conditions, 687 events. 184/687 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3785 event pairs, 124 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 1075. Up to 213 conditions per place. [2022-10-17 10:16:13,926 INFO L137 encePairwiseOnDemand]: 170/176 looper letters, 45 selfloop transitions, 5 changer transitions 0/158 dead transitions. [2022-10-17 10:16:13,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 158 transitions, 430 flow [2022-10-17 10:16:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:16:13,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:16:13,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 783 transitions. [2022-10-17 10:16:13,932 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7414772727272727 [2022-10-17 10:16:13,932 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 783 transitions. [2022-10-17 10:16:13,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 783 transitions. [2022-10-17 10:16:13,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:13,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 783 transitions. [2022-10-17 10:16:13,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 130.5) internal successors, (783), 6 states have internal predecessors, (783), 0 states have call successors, (0), 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 10:16:13,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 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 10:16:13,941 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 176.0) internal successors, (1232), 7 states have internal predecessors, (1232), 0 states have call successors, (0), 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 10:16:13,941 INFO L175 Difference]: Start difference. First operand has 157 places, 148 transitions, 308 flow. Second operand 6 states and 783 transitions. [2022-10-17 10:16:13,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 158 transitions, 430 flow [2022-10-17 10:16:13,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 158 transitions, 424 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-10-17 10:16:13,948 INFO L231 Difference]: Finished difference. Result has 157 places, 149 transitions, 320 flow [2022-10-17 10:16:13,948 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=320, PETRI_PLACES=157, PETRI_TRANSITIONS=149} [2022-10-17 10:16:13,951 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, -3 predicate places. [2022-10-17 10:16:13,951 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 149 transitions, 320 flow [2022-10-17 10:16:13,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.66666666666667) internal successors, (766), 6 states have internal predecessors, (766), 0 states have call successors, (0), 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 10:16:13,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:13,952 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:13,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:16:13,953 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:16:13,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:13,954 INFO L85 PathProgramCache]: Analyzing trace with hash -68929752, now seen corresponding path program 1 times [2022-10-17 10:16:13,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:13,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761102257] [2022-10-17 10:16:13,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:13,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:14,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:14,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:14,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761102257] [2022-10-17 10:16:14,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761102257] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:14,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:14,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:16:14,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534750083] [2022-10-17 10:16:14,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:14,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:16:14,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:14,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:16:14,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:16:14,272 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 176 [2022-10-17 10:16:14,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 149 transitions, 320 flow. Second operand has 7 states, 7 states have (on average 138.71428571428572) internal successors, (971), 7 states have internal predecessors, (971), 0 states have call successors, (0), 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 10:16:14,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:14,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 176 [2022-10-17 10:16:14,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:14,562 INFO L130 PetriNetUnfolder]: 230/721 cut-off events. [2022-10-17 10:16:14,562 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2022-10-17 10:16:14,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 721 events. 230/721 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3631 event pairs, 166 based on Foata normal form. 11/665 useless extension candidates. Maximal degree in co-relation 1270. Up to 319 conditions per place. [2022-10-17 10:16:14,570 INFO L137 encePairwiseOnDemand]: 167/176 looper letters, 31 selfloop transitions, 6 changer transitions 16/169 dead transitions. [2022-10-17 10:16:14,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 169 transitions, 474 flow [2022-10-17 10:16:14,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:16:14,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-10-17 10:16:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1133 transitions. [2022-10-17 10:16:14,575 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8046875 [2022-10-17 10:16:14,576 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1133 transitions. [2022-10-17 10:16:14,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1133 transitions. [2022-10-17 10:16:14,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:14,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1133 transitions. [2022-10-17 10:16:14,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 141.625) internal successors, (1133), 8 states have internal predecessors, (1133), 0 states have call successors, (0), 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 10:16:14,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 176.0) internal successors, (1584), 9 states have internal predecessors, (1584), 0 states have call successors, (0), 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 10:16:14,593 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 176.0) internal successors, (1584), 9 states have internal predecessors, (1584), 0 states have call successors, (0), 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 10:16:14,593 INFO L175 Difference]: Start difference. First operand has 157 places, 149 transitions, 320 flow. Second operand 8 states and 1133 transitions. [2022-10-17 10:16:14,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 169 transitions, 474 flow [2022-10-17 10:16:14,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 169 transitions, 465 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:16:14,601 INFO L231 Difference]: Finished difference. Result has 163 places, 150 transitions, 336 flow [2022-10-17 10:16:14,607 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=336, PETRI_PLACES=163, PETRI_TRANSITIONS=150} [2022-10-17 10:16:14,608 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 3 predicate places. [2022-10-17 10:16:14,609 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 150 transitions, 336 flow [2022-10-17 10:16:14,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.71428571428572) internal successors, (971), 7 states have internal predecessors, (971), 0 states have call successors, (0), 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 10:16:14,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:14,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:14,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:16:14,612 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:16:14,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:14,613 INFO L85 PathProgramCache]: Analyzing trace with hash 834880885, now seen corresponding path program 1 times [2022-10-17 10:16:14,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:14,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713174381] [2022-10-17 10:16:14,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:14,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:14,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:14,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713174381] [2022-10-17 10:16:14,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713174381] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:16:14,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115996347] [2022-10-17 10:16:14,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:14,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:16:14,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:16:14,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:16:14,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:16:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:15,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:16:15,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:16:15,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:15,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:16:15,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:15,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115996347] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 10:16:15,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:16:15,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-10-17 10:16:15,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130189662] [2022-10-17 10:16:15,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:15,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:16:15,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:15,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:16:15,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:16:15,636 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 176 [2022-10-17 10:16:15,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 150 transitions, 336 flow. Second operand has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 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 10:16:15,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:15,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 176 [2022-10-17 10:16:15,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:15,892 INFO L130 PetriNetUnfolder]: 171/618 cut-off events. [2022-10-17 10:16:15,892 INFO L131 PetriNetUnfolder]: For 71/83 co-relation queries the response was YES. [2022-10-17 10:16:15,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 618 events. 171/618 cut-off events. For 71/83 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3226 event pairs, 81 based on Foata normal form. 12/595 useless extension candidates. Maximal degree in co-relation 1069. Up to 155 conditions per place. [2022-10-17 10:16:15,898 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 34 selfloop transitions, 7 changer transitions 0/158 dead transitions. [2022-10-17 10:16:15,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 158 transitions, 440 flow [2022-10-17 10:16:15,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:16:15,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:16:15,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 986 transitions. [2022-10-17 10:16:15,903 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8003246753246753 [2022-10-17 10:16:15,903 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 986 transitions. [2022-10-17 10:16:15,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 986 transitions. [2022-10-17 10:16:15,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:15,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 986 transitions. [2022-10-17 10:16:15,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 140.85714285714286) internal successors, (986), 7 states have internal predecessors, (986), 0 states have call successors, (0), 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 10:16:15,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 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 10:16:15,912 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 0 states have call successors, (0), 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 10:16:15,912 INFO L175 Difference]: Start difference. First operand has 163 places, 150 transitions, 336 flow. Second operand 7 states and 986 transitions. [2022-10-17 10:16:15,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 158 transitions, 440 flow [2022-10-17 10:16:15,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 158 transitions, 424 flow, removed 3 selfloop flow, removed 6 redundant places. [2022-10-17 10:16:15,918 INFO L231 Difference]: Finished difference. Result has 164 places, 152 transitions, 355 flow [2022-10-17 10:16:15,919 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=355, PETRI_PLACES=164, PETRI_TRANSITIONS=152} [2022-10-17 10:16:15,921 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 4 predicate places. [2022-10-17 10:16:15,922 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 152 transitions, 355 flow [2022-10-17 10:16:15,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 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 10:16:15,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:15,923 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, 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 10:16:15,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:16:16,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:16:16,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:16:16,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:16,127 INFO L85 PathProgramCache]: Analyzing trace with hash -55104219, now seen corresponding path program 1 times [2022-10-17 10:16:16,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:16,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548440843] [2022-10-17 10:16:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:16,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:16,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:16:17,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:17,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548440843] [2022-10-17 10:16:17,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548440843] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:16:17,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716183982] [2022-10-17 10:16:17,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:17,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:16:17,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:16:17,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:16:17,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:16:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:17,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 38 conjunts are in the unsatisfiable core [2022-10-17 10:16:17,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:16:18,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:18,144 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-17 10:16:18,300 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 10:16:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:16:18,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:16:18,696 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_121 (Array Int Int))) (<= c_~min~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_121) c_~A~0.base) c_~A~0.offset))) is different from false [2022-10-17 10:16:19,079 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 18 treesize of output 14 [2022-10-17 10:16:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-10-17 10:16:19,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716183982] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:16:19,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:16:19,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 18] total 37 [2022-10-17 10:16:19,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942702133] [2022-10-17 10:16:19,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:16:19,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-10-17 10:16:19,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:19,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-10-17 10:16:19,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1127, Unknown=8, NotChecked=68, Total=1332 [2022-10-17 10:16:19,293 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 176 [2022-10-17 10:16:19,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 152 transitions, 355 flow. Second operand has 37 states, 37 states have (on average 80.27027027027027) internal successors, (2970), 37 states have internal predecessors, (2970), 0 states have call successors, (0), 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 10:16:19,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:19,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 176 [2022-10-17 10:16:19,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:26,130 INFO L130 PetriNetUnfolder]: 7432/14309 cut-off events. [2022-10-17 10:16:26,131 INFO L131 PetriNetUnfolder]: For 4991/4991 co-relation queries the response was YES. [2022-10-17 10:16:26,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31129 conditions, 14309 events. 7432/14309 cut-off events. For 4991/4991 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 126975 event pairs, 1136 based on Foata normal form. 3/14047 useless extension candidates. Maximal degree in co-relation 31119. Up to 2005 conditions per place. [2022-10-17 10:16:26,281 INFO L137 encePairwiseOnDemand]: 138/176 looper letters, 277 selfloop transitions, 70 changer transitions 123/537 dead transitions. [2022-10-17 10:16:26,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 537 transitions, 2416 flow [2022-10-17 10:16:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-10-17 10:16:26,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-10-17 10:16:26,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3459 transitions. [2022-10-17 10:16:26,295 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.49133522727272727 [2022-10-17 10:16:26,295 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3459 transitions. [2022-10-17 10:16:26,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3459 transitions. [2022-10-17 10:16:26,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:26,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3459 transitions. [2022-10-17 10:16:26,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 86.475) internal successors, (3459), 40 states have internal predecessors, (3459), 0 states have call successors, (0), 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 10:16:26,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 176.0) internal successors, (7216), 41 states have internal predecessors, (7216), 0 states have call successors, (0), 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 10:16:26,330 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 176.0) internal successors, (7216), 41 states have internal predecessors, (7216), 0 states have call successors, (0), 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 10:16:26,331 INFO L175 Difference]: Start difference. First operand has 164 places, 152 transitions, 355 flow. Second operand 40 states and 3459 transitions. [2022-10-17 10:16:26,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 537 transitions, 2416 flow [2022-10-17 10:16:26,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 537 transitions, 2367 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:16:26,419 INFO L231 Difference]: Finished difference. Result has 227 places, 213 transitions, 931 flow [2022-10-17 10:16:26,420 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=931, PETRI_PLACES=227, PETRI_TRANSITIONS=213} [2022-10-17 10:16:26,420 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 67 predicate places. [2022-10-17 10:16:26,421 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 213 transitions, 931 flow [2022-10-17 10:16:26,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 80.27027027027027) internal successors, (2970), 37 states have internal predecessors, (2970), 0 states have call successors, (0), 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 10:16:26,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:26,423 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, 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 10:16:26,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:16:26,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 10:16:26,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:16:26,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:26,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1633065177, now seen corresponding path program 2 times [2022-10-17 10:16:26,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:26,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731121971] [2022-10-17 10:16:26,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:26,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:26,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:27,989 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:16:27,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:27,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731121971] [2022-10-17 10:16:27,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731121971] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:16:27,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512536292] [2022-10-17 10:16:27,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:16:27,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:16:27,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:16:27,991 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:16:28,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_686b0ece-c361-4365-8f87-c8af994da8df/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:16:28,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:16:28,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:16:28,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 36 conjunts are in the unsatisfiable core [2022-10-17 10:16:28,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:16:28,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:28,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-17 10:16:28,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:16:28,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-10-17 10:16:29,052 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 10:16:29,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:16:29,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:16:29,338 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_155 (Array Int Int))) (<= c_~min~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_155) c_~A~0.base) c_~A~0.offset))) is different from false [2022-10-17 10:16:29,368 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_155 (Array Int Int)) (v_ArrVal_154 (Array Int Int))) (<= c_~min~0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_154) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_155) c_~A~0.base) c_~A~0.offset))) is different from false [2022-10-17 10:16:29,631 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 122 treesize of output 98 [2022-10-17 10:16:29,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 45 treesize of output 41 [2022-10-17 10:16:29,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 86 treesize of output 78 [2022-10-17 10:16:30,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-10-17 10:16:30,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512536292] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:16:30,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:16:30,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 20] total 43 [2022-10-17 10:16:30,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103697413] [2022-10-17 10:16:30,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:16:30,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-10-17 10:16:30,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:30,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-10-17 10:16:30,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1475, Unknown=9, NotChecked=158, Total=1806 [2022-10-17 10:16:30,138 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 176 [2022-10-17 10:16:30,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 213 transitions, 931 flow. Second operand has 43 states, 43 states have (on average 84.34883720930233) internal successors, (3627), 43 states have internal predecessors, (3627), 0 states have call successors, (0), 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 10:16:30,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:30,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 176 [2022-10-17 10:16:30,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand