./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/bigshot_s2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/bigshot_s2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN --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 fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb --- 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-6b4ec56 [2022-11-20 11:59:02,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:59:02,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:59:02,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:59:02,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:59:02,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:59:02,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:59:02,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:59:02,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:59:02,571 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:59:02,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:59:02,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:59:02,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:59:02,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:59:02,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:59:02,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:59:02,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:59:02,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:59:02,584 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:59:02,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:59:02,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:59:02,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:59:02,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:59:02,594 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:59:02,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:59:02,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:59:02,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:59:02,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:59:02,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:59:02,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:59:02,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:59:02,605 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:59:02,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:59:02,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:59:02,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:59:02,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:59:02,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:59:02,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:59:02,611 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:59:02,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:59:02,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:59:02,615 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:59:02,648 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:59:02,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:59:02,649 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:59:02,650 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:59:02,660 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:59:02,660 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:59:02,661 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:59:02,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:59:02,662 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:59:02,662 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:59:02,663 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:59:02,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:59:02,663 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:59:02,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:59:02,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:59:02,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:59:02,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:59:02,665 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:59:02,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:59:02,665 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:59:02,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:59:02,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:59:02,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:59:02,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:59:02,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:59:02,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:59:02,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:59:02,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:59:02,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:59:02,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:59:02,670 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:59:02,670 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:59:02,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:59:02,671 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_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa644cc26c2bb4f900e6af52233648196eb4dff503d36a50559ddcf2a4270ffb [2022-11-20 11:59:03,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:59:03,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:59:03,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:59:03,105 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:59:03,105 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:59:03,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/bigshot_s2.i [2022-11-20 11:59:06,852 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:59:07,164 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:59:07,164 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/sv-benchmarks/c/pthread/bigshot_s2.i [2022-11-20 11:59:07,187 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/data/996e9f7b1/5f074b64b27448b8bec3b27a1e026e1d/FLAG1b6615a74 [2022-11-20 11:59:07,206 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/data/996e9f7b1/5f074b64b27448b8bec3b27a1e026e1d [2022-11-20 11:59:07,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:59:07,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:59:07,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:59:07,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:59:07,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:59:07,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:59:07" (1/1) ... [2022-11-20 11:59:07,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d68e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:07, skipping insertion in model container [2022-11-20 11:59:07,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:59:07" (1/1) ... [2022-11-20 11:59:07,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:59:07,291 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:59:07,985 WARN L237 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_21daa224-6d4d-4255-9ff4-dee209b9585c/sv-benchmarks/c/pthread/bigshot_s2.i[55203,55216] [2022-11-20 11:59:08,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:59:08,033 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:59:08,097 WARN L237 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_21daa224-6d4d-4255-9ff4-dee209b9585c/sv-benchmarks/c/pthread/bigshot_s2.i[55203,55216] [2022-11-20 11:59:08,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:59:08,237 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:59:08,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:08 WrapperNode [2022-11-20 11:59:08,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:59:08,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:59:08,240 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:59:08,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:59:08,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:08" (1/1) ... [2022-11-20 11:59:08,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:08" (1/1) ... [2022-11-20 11:59:08,334 INFO L138 Inliner]: procedures = 323, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-11-20 11:59:08,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:59:08,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:59:08,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:59:08,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:59:08,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:08" (1/1) ... [2022-11-20 11:59:08,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:08" (1/1) ... [2022-11-20 11:59:08,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:08" (1/1) ... [2022-11-20 11:59:08,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:08" (1/1) ... [2022-11-20 11:59:08,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:08" (1/1) ... [2022-11-20 11:59:08,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:08" (1/1) ... [2022-11-20 11:59:08,390 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:08" (1/1) ... [2022-11-20 11:59:08,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:08" (1/1) ... [2022-11-20 11:59:08,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:59:08,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:59:08,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:59:08,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:59:08,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:08" (1/1) ... [2022-11-20 11:59:08,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:59:08,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:08,444 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:59:08,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:59:08,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:59:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:59:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-20 11:59:08,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:59:08,506 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:59:08,507 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:59:08,507 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:59:08,509 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:59:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:59:08,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:59:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:59:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:59:08,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:59:08,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:59:08,513 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:59:08,685 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:59:08,689 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:59:09,029 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:59:09,038 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:59:09,038 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:59:09,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:09 BoogieIcfgContainer [2022-11-20 11:59:09,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:59:09,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:59:09,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:59:09,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:59:09,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:59:07" (1/3) ... [2022-11-20 11:59:09,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3306b20b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:09, skipping insertion in model container [2022-11-20 11:59:09,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:08" (2/3) ... [2022-11-20 11:59:09,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3306b20b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:09, skipping insertion in model container [2022-11-20 11:59:09,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:09" (3/3) ... [2022-11-20 11:59:09,053 INFO L112 eAbstractionObserver]: Analyzing ICFG bigshot_s2.i [2022-11-20 11:59:09,066 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:59:09,083 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:59:09,084 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:59:09,084 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:59:09,233 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:59:09,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 90 transitions, 196 flow [2022-11-20 11:59:09,411 INFO L130 PetriNetUnfolder]: 4/88 cut-off events. [2022-11-20 11:59:09,411 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:59:09,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 4/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-20 11:59:09,419 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 90 transitions, 196 flow [2022-11-20 11:59:09,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 75 transitions, 162 flow [2022-11-20 11:59:09,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:59:09,460 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;@592b6df7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:59:09,461 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 11:59:09,512 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-11-20 11:59:09,512 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:59:09,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:09,514 INFO L209 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] [2022-11-20 11:59:09,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:59:09,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:09,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1001960539, now seen corresponding path program 1 times [2022-11-20 11:59:09,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:09,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693207743] [2022-11-20 11:59:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:09,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:10,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:10,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:10,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693207743] [2022-11-20 11:59:10,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693207743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:10,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:10,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:59:10,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216525905] [2022-11-20 11:59:10,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:10,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:59:10,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:10,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:59:10,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:59:10,303 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 90 [2022-11-20 11:59:10,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 75 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:10,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:10,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 90 [2022-11-20 11:59:10,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:10,416 INFO L130 PetriNetUnfolder]: 1/73 cut-off events. [2022-11-20 11:59:10,416 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-20 11:59:10,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 73 events. 1/73 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 1/73 useless extension candidates. Maximal degree in co-relation 43. Up to 7 conditions per place. [2022-11-20 11:59:10,418 INFO L137 encePairwiseOnDemand]: 85/90 looper letters, 8 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2022-11-20 11:59:10,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 73 transitions, 180 flow [2022-11-20 11:59:10,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:59:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:59:10,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2022-11-20 11:59:10,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8622222222222222 [2022-11-20 11:59:10,455 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 388 transitions. [2022-11-20 11:59:10,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 388 transitions. [2022-11-20 11:59:10,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:10,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 388 transitions. [2022-11-20 11:59:10,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.6) internal successors, (388), 5 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:10,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:10,487 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:10,489 INFO L175 Difference]: Start difference. First operand has 79 places, 75 transitions, 162 flow. Second operand 5 states and 388 transitions. [2022-11-20 11:59:10,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 73 transitions, 180 flow [2022-11-20 11:59:10,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 172 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:59:10,505 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 156 flow [2022-11-20 11:59:10,507 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2022-11-20 11:59:10,514 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 0 predicate places. [2022-11-20 11:59:10,514 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 156 flow [2022-11-20 11:59:10,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:10,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:10,516 INFO L209 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] [2022-11-20 11:59:10,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:59:10,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:59:10,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:10,518 INFO L85 PathProgramCache]: Analyzing trace with hash -99642894, now seen corresponding path program 1 times [2022-11-20 11:59:10,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:10,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197334161] [2022-11-20 11:59:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:10,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:11,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:11,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197334161] [2022-11-20 11:59:11,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197334161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:11,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:11,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:59:11,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172882991] [2022-11-20 11:59:11,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:11,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:59:11,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:11,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:59:11,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:59:11,412 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 90 [2022-11-20 11:59:11,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 156 flow. Second operand has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:11,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:11,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 90 [2022-11-20 11:59:11,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:11,880 INFO L130 PetriNetUnfolder]: 16/119 cut-off events. [2022-11-20 11:59:11,880 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 11:59:11,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 119 events. 16/119 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 155 event pairs, 1 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 126. Up to 20 conditions per place. [2022-11-20 11:59:11,885 INFO L137 encePairwiseOnDemand]: 80/90 looper letters, 36 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2022-11-20 11:59:11,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 270 flow [2022-11-20 11:59:11,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:59:11,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 11:59:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 527 transitions. [2022-11-20 11:59:11,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5855555555555556 [2022-11-20 11:59:11,893 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 527 transitions. [2022-11-20 11:59:11,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 527 transitions. [2022-11-20 11:59:11,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:11,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 527 transitions. [2022-11-20 11:59:11,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 52.7) internal successors, (527), 10 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:11,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:11,901 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:11,901 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 156 flow. Second operand 10 states and 527 transitions. [2022-11-20 11:59:11,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 270 flow [2022-11-20 11:59:11,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 84 transitions, 265 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 11:59:11,907 INFO L231 Difference]: Finished difference. Result has 87 places, 77 transitions, 193 flow [2022-11-20 11:59:11,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=193, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2022-11-20 11:59:11,908 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 8 predicate places. [2022-11-20 11:59:11,909 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 193 flow [2022-11-20 11:59:11,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 50.75) internal successors, (609), 12 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:11,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:11,910 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:11,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:59:11,911 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:59:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:11,912 INFO L85 PathProgramCache]: Analyzing trace with hash 630991872, now seen corresponding path program 1 times [2022-11-20 11:59:11,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:11,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257126215] [2022-11-20 11:59:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:11,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:11,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:13,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:13,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257126215] [2022-11-20 11:59:13,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257126215] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:13,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573457794] [2022-11-20 11:59:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:13,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:13,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:13,046 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:13,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:59:13,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:13,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 11:59:13,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:13,484 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:59:13,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 11:59:13,553 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:59:13,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:59:13,631 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:59:13,842 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:59:14,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:59:14,211 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 11:59:14,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-11-20 11:59:14,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:59:14,407 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:59:14,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 11:59:14,557 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:59:14,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-20 11:59:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:14,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:16,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573457794] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:59:16,117 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:59:16,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 17] total 42 [2022-11-20 11:59:16,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722286469] [2022-11-20 11:59:16,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:59:16,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-20 11:59:16,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:16,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-20 11:59:16,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1576, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 11:59:16,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 90 [2022-11-20 11:59:16,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 193 flow. Second operand has 42 states, 42 states have (on average 38.95238095238095) internal successors, (1636), 42 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:16,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:16,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 90 [2022-11-20 11:59:16,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:18,057 INFO L130 PetriNetUnfolder]: 30/172 cut-off events. [2022-11-20 11:59:18,057 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-20 11:59:18,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 172 events. 30/172 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 359 event pairs, 2 based on Foata normal form. 3/175 useless extension candidates. Maximal degree in co-relation 264. Up to 32 conditions per place. [2022-11-20 11:59:18,059 INFO L137 encePairwiseOnDemand]: 72/90 looper letters, 51 selfloop transitions, 18 changer transitions 7/105 dead transitions. [2022-11-20 11:59:18,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 105 transitions, 418 flow [2022-11-20 11:59:18,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:59:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-20 11:59:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 834 transitions. [2022-11-20 11:59:18,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44126984126984126 [2022-11-20 11:59:18,067 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 834 transitions. [2022-11-20 11:59:18,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 834 transitions. [2022-11-20 11:59:18,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:18,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 834 transitions. [2022-11-20 11:59:18,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 39.714285714285715) internal successors, (834), 21 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:18,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 90.0) internal successors, (1980), 22 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:18,077 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 90.0) internal successors, (1980), 22 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:18,077 INFO L175 Difference]: Start difference. First operand has 87 places, 77 transitions, 193 flow. Second operand 21 states and 834 transitions. [2022-11-20 11:59:18,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 105 transitions, 418 flow [2022-11-20 11:59:18,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 105 transitions, 411 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:59:18,085 INFO L231 Difference]: Finished difference. Result has 109 places, 82 transitions, 264 flow [2022-11-20 11:59:18,085 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=264, PETRI_PLACES=109, PETRI_TRANSITIONS=82} [2022-11-20 11:59:18,086 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 30 predicate places. [2022-11-20 11:59:18,087 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 82 transitions, 264 flow [2022-11-20 11:59:18,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 38.95238095238095) internal successors, (1636), 42 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:18,088 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:18,088 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:18,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:18,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:18,296 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:59:18,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:18,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1531853158, now seen corresponding path program 2 times [2022-11-20 11:59:18,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:18,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557631507] [2022-11-20 11:59:18,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:18,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:19,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:19,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557631507] [2022-11-20 11:59:19,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557631507] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:19,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515405781] [2022-11-20 11:59:19,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:59:19,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:19,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:19,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:19,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:59:19,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:59:19,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:59:19,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 11:59:19,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:19,588 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:59:19,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 11:59:19,657 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 11:59:19,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 11:59:19,742 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:59:19,838 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 11:59:19,840 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 11:59:19,985 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:59:20,204 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:59:20,323 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:59:20,436 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:59:20,564 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 11:59:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:20,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:20,721 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_100 (Array Int Int))) (< 0 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| v_ArrVal_100) |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.base|) (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_src#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| 1)))) is different from false [2022-11-20 11:59:22,220 INFO L350 Elim1Store]: Elim1 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 242 treesize of output 230 [2022-11-20 11:59:22,234 INFO L350 Elim1Store]: Elim1 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 226 treesize of output 218 [2022-11-20 11:59:22,249 INFO L350 Elim1Store]: Elim1 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 218 treesize of output 202 [2022-11-20 11:59:22,263 INFO L350 Elim1Store]: Elim1 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 202 treesize of output 198 [2022-11-20 11:59:30,722 WARN L233 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:59:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-20 11:59:31,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515405781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:59:31,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:59:31,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 45 [2022-11-20 11:59:31,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435119631] [2022-11-20 11:59:31,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:59:31,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-20 11:59:31,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:31,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-20 11:59:31,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1697, Unknown=16, NotChecked=84, Total=1980 [2022-11-20 11:59:31,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 90 [2022-11-20 11:59:31,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 82 transitions, 264 flow. Second operand has 45 states, 45 states have (on average 43.91111111111111) internal successors, (1976), 45 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:31,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:59:31,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 90 [2022-11-20 11:59:31,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:59:33,237 INFO L130 PetriNetUnfolder]: 60/365 cut-off events. [2022-11-20 11:59:33,237 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2022-11-20 11:59:33,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 365 events. 60/365 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1575 event pairs, 7 based on Foata normal form. 3/368 useless extension candidates. Maximal degree in co-relation 902. Up to 69 conditions per place. [2022-11-20 11:59:33,245 INFO L137 encePairwiseOnDemand]: 74/90 looper letters, 99 selfloop transitions, 34 changer transitions 6/171 dead transitions. [2022-11-20 11:59:33,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 171 transitions, 969 flow [2022-11-20 11:59:33,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 11:59:33,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-20 11:59:33,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1187 transitions. [2022-11-20 11:59:33,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5072649572649572 [2022-11-20 11:59:33,251 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1187 transitions. [2022-11-20 11:59:33,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1187 transitions. [2022-11-20 11:59:33,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:59:33,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1187 transitions. [2022-11-20 11:59:33,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 45.65384615384615) internal successors, (1187), 26 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:33,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 90.0) internal successors, (2430), 27 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:33,267 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 90.0) internal successors, (2430), 27 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:33,267 INFO L175 Difference]: Start difference. First operand has 109 places, 82 transitions, 264 flow. Second operand 26 states and 1187 transitions. [2022-11-20 11:59:33,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 171 transitions, 969 flow [2022-11-20 11:59:33,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 171 transitions, 844 flow, removed 29 selfloop flow, removed 15 redundant places. [2022-11-20 11:59:33,282 INFO L231 Difference]: Finished difference. Result has 127 places, 112 transitions, 505 flow [2022-11-20 11:59:33,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=505, PETRI_PLACES=127, PETRI_TRANSITIONS=112} [2022-11-20 11:59:33,284 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 48 predicate places. [2022-11-20 11:59:33,285 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 112 transitions, 505 flow [2022-11-20 11:59:33,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 43.91111111111111) internal successors, (1976), 45 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:33,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:59:33,286 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:33,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:33,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:33,493 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:59:33,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:33,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1331018264, now seen corresponding path program 3 times [2022-11-20 11:59:33,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:33,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905897196] [2022-11-20 11:59:33,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:33,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:33,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:34,762 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:34,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:34,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905897196] [2022-11-20 11:59:34,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905897196] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:34,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178410827] [2022-11-20 11:59:34,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:59:34,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:34,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:34,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:34,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:59:34,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:59:34,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:59:34,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-20 11:59:34,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:35,269 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-20 11:59:35,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-20 11:59:35,383 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-20 11:59:35,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2022-11-20 11:59:35,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2022-11-20 11:59:35,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2022-11-20 11:59:36,150 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:59:36,164 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 11:59:36,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-11-20 11:59:36,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:59:36,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:59:36,446 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:59:36,450 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:59:36,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 11:59:36,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:59:36,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:59:36,651 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:59:36,655 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:59:36,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 11:59:36,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:59:36,908 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:59:36,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 11:59:37,045 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 11:59:37,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-20 11:59:37,171 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:37,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:59,882 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 11:59:59,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 766 treesize of output 740 [2022-11-20 11:59:59,898 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:59:59,924 INFO L350 Elim1Store]: Elim1 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 662 treesize of output 646 [2022-11-20 11:59:59,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 11:59:59,963 INFO L350 Elim1Store]: Elim1 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 518 treesize of output 486 [2022-11-20 12:00:01,283 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:00:01,298 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:00:01,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:00:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 12:00:01,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178410827] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:00:01,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:00:01,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23, 20] total 54 [2022-11-20 12:00:01,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188244334] [2022-11-20 12:00:01,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:00:01,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-20 12:00:01,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:01,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-20 12:00:01,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=2630, Unknown=9, NotChecked=0, Total=2862 [2022-11-20 12:00:01,525 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 90 [2022-11-20 12:00:01,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 112 transitions, 505 flow. Second operand has 54 states, 54 states have (on average 37.833333333333336) internal successors, (2043), 54 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:01,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:01,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 90 [2022-11-20 12:00:01,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:00:13,341 INFO L130 PetriNetUnfolder]: 65/515 cut-off events. [2022-11-20 12:00:13,341 INFO L131 PetriNetUnfolder]: For 706/706 co-relation queries the response was YES. [2022-11-20 12:00:13,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1571 conditions, 515 events. 65/515 cut-off events. For 706/706 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2895 event pairs, 4 based on Foata normal form. 5/520 useless extension candidates. Maximal degree in co-relation 1152. Up to 63 conditions per place. [2022-11-20 12:00:13,345 INFO L137 encePairwiseOnDemand]: 67/90 looper letters, 42 selfloop transitions, 31 changer transitions 78/179 dead transitions. [2022-11-20 12:00:13,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 179 transitions, 1218 flow [2022-11-20 12:00:13,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 12:00:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-20 12:00:13,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1152 transitions. [2022-11-20 12:00:13,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2022-11-20 12:00:13,355 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1152 transitions. [2022-11-20 12:00:13,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1152 transitions. [2022-11-20 12:00:13,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:00:13,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1152 transitions. [2022-11-20 12:00:13,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 38.4) internal successors, (1152), 30 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:13,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:13,368 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 90.0) internal successors, (2790), 31 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:13,368 INFO L175 Difference]: Start difference. First operand has 127 places, 112 transitions, 505 flow. Second operand 30 states and 1152 transitions. [2022-11-20 12:00:13,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 179 transitions, 1218 flow [2022-11-20 12:00:13,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 179 transitions, 1187 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-11-20 12:00:13,379 INFO L231 Difference]: Finished difference. Result has 163 places, 98 transitions, 494 flow [2022-11-20 12:00:13,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=494, PETRI_PLACES=163, PETRI_TRANSITIONS=98} [2022-11-20 12:00:13,380 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 84 predicate places. [2022-11-20 12:00:13,381 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 98 transitions, 494 flow [2022-11-20 12:00:13,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 37.833333333333336) internal successors, (2043), 54 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:13,382 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:13,382 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:13,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 12:00:13,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:00:13,589 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:00:13,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:13,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1327226584, now seen corresponding path program 4 times [2022-11-20 12:00:13,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:13,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585553972] [2022-11-20 12:00:13,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:13,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:14,625 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:14,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:14,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585553972] [2022-11-20 12:00:14,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585553972] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:00:14,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110184590] [2022-11-20 12:00:14,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:00:14,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:00:14,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:00:14,631 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:00:14,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:00:14,803 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:00:14,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:00:14,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-20 12:00:14,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:14,957 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:00:14,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:00:15,017 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:00:15,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:00:15,076 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 12:00:15,326 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 12:00:15,653 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:00:15,667 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:00:15,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-11-20 12:00:15,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:15,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:15,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:00:15,952 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:00:15,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 12:00:16,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:16,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:16,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:00:16,148 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:00:16,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 12:00:16,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:16,303 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:00:16,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 12:00:16,450 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:00:16,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-11-20 12:00:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:16,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:00:19,385 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:19,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110184590] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:00:19,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:00:19,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21, 21] total 50 [2022-11-20 12:00:19,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353735841] [2022-11-20 12:00:19,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:00:19,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-20 12:00:19,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:19,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-20 12:00:19,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2243, Unknown=0, NotChecked=0, Total=2450 [2022-11-20 12:00:19,392 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 90 [2022-11-20 12:00:19,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 98 transitions, 494 flow. Second operand has 50 states, 50 states have (on average 37.98) internal successors, (1899), 50 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:19,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:00:19,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 90 [2022-11-20 12:00:19,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:00:21,811 INFO L130 PetriNetUnfolder]: 12/266 cut-off events. [2022-11-20 12:00:21,811 INFO L131 PetriNetUnfolder]: For 561/561 co-relation queries the response was YES. [2022-11-20 12:00:21,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 266 events. 12/266 cut-off events. For 561/561 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 664 event pairs, 2 based on Foata normal form. 4/270 useless extension candidates. Maximal degree in co-relation 847. Up to 33 conditions per place. [2022-11-20 12:00:21,814 INFO L137 encePairwiseOnDemand]: 70/90 looper letters, 64 selfloop transitions, 38 changer transitions 16/146 dead transitions. [2022-11-20 12:00:21,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 146 transitions, 1111 flow [2022-11-20 12:00:21,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 12:00:21,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-20 12:00:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1110 transitions. [2022-11-20 12:00:21,820 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42528735632183906 [2022-11-20 12:00:21,820 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1110 transitions. [2022-11-20 12:00:21,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1110 transitions. [2022-11-20 12:00:21,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:00:21,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1110 transitions. [2022-11-20 12:00:21,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 38.275862068965516) internal successors, (1110), 29 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:21,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 90.0) internal successors, (2700), 30 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:21,833 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 90.0) internal successors, (2700), 30 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:21,833 INFO L175 Difference]: Start difference. First operand has 163 places, 98 transitions, 494 flow. Second operand 29 states and 1110 transitions. [2022-11-20 12:00:21,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 146 transitions, 1111 flow [2022-11-20 12:00:21,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 146 transitions, 878 flow, removed 88 selfloop flow, removed 33 redundant places. [2022-11-20 12:00:21,843 INFO L231 Difference]: Finished difference. Result has 146 places, 117 transitions, 671 flow [2022-11-20 12:00:21,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=671, PETRI_PLACES=146, PETRI_TRANSITIONS=117} [2022-11-20 12:00:21,844 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 67 predicate places. [2022-11-20 12:00:21,845 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 117 transitions, 671 flow [2022-11-20 12:00:21,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 37.98) internal successors, (1899), 50 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:21,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:00:21,846 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:21,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:00:22,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:00:22,060 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 12:00:22,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:22,061 INFO L85 PathProgramCache]: Analyzing trace with hash 29363024, now seen corresponding path program 5 times [2022-11-20 12:00:22,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:00:22,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958467574] [2022-11-20 12:00:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:22,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:00:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:25,207 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 40 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:25,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:00:25,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958467574] [2022-11-20 12:00:25,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958467574] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:00:25,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080925100] [2022-11-20 12:00:25,208 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 12:00:25,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:00:25,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:00:25,210 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:00:25,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:00:25,410 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-11-20 12:00:25,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:00:25,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-20 12:00:25,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:25,521 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:00:25,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:00:25,550 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:00:25,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:00:25,581 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 12:00:25,690 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 12:00:26,050 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:00:26,063 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:00:26,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 20 [2022-11-20 12:00:26,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:26,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:26,357 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:00:26,360 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:00:26,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 12:00:26,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:26,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:26,574 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:00:26,578 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:00:26,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 12:00:26,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:26,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:26,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:00:26,801 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:00:26,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 12:00:27,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:27,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:27,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:00:27,018 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:00:27,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 12:00:27,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:27,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:27,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:00:27,261 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:00:27,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 12:00:27,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:27,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:27,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:00:27,486 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:00:27,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 12:00:27,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:00:27,741 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:00:27,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 30 [2022-11-20 12:00:27,885 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:00:27,885 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-20 12:00:27,985 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 50 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:27,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:38,445 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_257 Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_57| Int) (v_ArrVal_264 Int) (v_ArrVal_262 Int) (v_ArrVal_260 Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_56| Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_55| Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_54| Int) (v_ArrVal_259 Int)) (or (not (<= (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_57|)) (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_56| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_55|)) (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_57| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_56|)) (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|) (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1|) v_ArrVal_257) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_57| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_259) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_56| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_260) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_55| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_262) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_54| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_264)) c_~v~0.base) c_~v~0.offset)) (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_55| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_54|)))) is different from false [2022-11-20 12:01:40,567 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_58| Int)) (or (forall ((v_ArrVal_257 Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_57| Int) (v_ArrVal_264 Int) (v_ArrVal_262 Int) (v_ArrVal_260 Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_56| Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_55| Int) (|v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_54| Int) (v_ArrVal_259 Int)) (or (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_56| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_55|)) (= 66 (select (select (store |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base| (store (store (store (store (store (select |c_#memory_int| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.base|) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_58| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_257) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_57| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_259) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_56| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_260) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_55| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_262) (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_54| |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_dest#1.offset|) v_ArrVal_264)) c_~v~0.base) c_~v~0.offset)) (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_58| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_57|)) (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_57| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_56|)) (not (<= (+ |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_55| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_54|)))) (not (<= (+ |c_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1| 1) |v_thread2Thread1of1ForFork1_#Ultimate.C_strcpy_#t~offset13#1_58|)))) is different from false [2022-11-20 12:06:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 40 proven. 18 refuted. 20 times theorem prover too weak. 0 trivial. 27 not checked. [2022-11-20 12:06:55,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080925100] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:06:55,553 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:06:55,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 29] total 63 [2022-11-20 12:06:55,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219418939] [2022-11-20 12:06:55,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:06:55,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-20 12:06:55,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:55,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-20 12:06:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=520, Invalid=3003, Unknown=145, NotChecked=238, Total=3906 [2022-11-20 12:06:55,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 90 [2022-11-20 12:06:55,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 117 transitions, 671 flow. Second operand has 63 states, 63 states have (on average 38.76190476190476) internal successors, (2442), 63 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:06:55,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:06:55,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 90 [2022-11-20 12:06:55,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:07:01,708 INFO L130 PetriNetUnfolder]: 8/248 cut-off events. [2022-11-20 12:07:01,708 INFO L131 PetriNetUnfolder]: For 370/370 co-relation queries the response was YES. [2022-11-20 12:07:01,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 248 events. 8/248 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 571 event pairs, 3 based on Foata normal form. 2/250 useless extension candidates. Maximal degree in co-relation 754. Up to 25 conditions per place. [2022-11-20 12:07:01,709 INFO L137 encePairwiseOnDemand]: 74/90 looper letters, 0 selfloop transitions, 0 changer transitions 134/134 dead transitions. [2022-11-20 12:07:01,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 134 transitions, 993 flow [2022-11-20 12:07:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:07:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 12:07:01,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 907 transitions. [2022-11-20 12:07:01,712 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43816425120772945 [2022-11-20 12:07:01,712 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 907 transitions. [2022-11-20 12:07:01,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 907 transitions. [2022-11-20 12:07:01,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:07:01,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 907 transitions. [2022-11-20 12:07:01,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 39.43478260869565) internal successors, (907), 23 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:01,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 90.0) internal successors, (2160), 24 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:01,720 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 90.0) internal successors, (2160), 24 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:01,720 INFO L175 Difference]: Start difference. First operand has 146 places, 117 transitions, 671 flow. Second operand 23 states and 907 transitions. [2022-11-20 12:07:01,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 134 transitions, 993 flow [2022-11-20 12:07:01,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 134 transitions, 889 flow, removed 31 selfloop flow, removed 17 redundant places. [2022-11-20 12:07:01,727 INFO L231 Difference]: Finished difference. Result has 146 places, 0 transitions, 0 flow [2022-11-20 12:07:01,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=146, PETRI_TRANSITIONS=0} [2022-11-20 12:07:01,729 INFO L288 CegarLoopForPetriNet]: 79 programPoint places, 67 predicate places. [2022-11-20 12:07:01,729 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 0 transitions, 0 flow [2022-11-20 12:07:01,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 38.76190476190476) internal successors, (2442), 63 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:07:01,734 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-20 12:07:01,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-20 12:07:01,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-20 12:07:01,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:07:01,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:07:01,947 INFO L444 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2022-11-20 12:07:01,949 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 12:07:01,950 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:07:01,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:07:01 BasicIcfg [2022-11-20 12:07:01,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:07:01,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:07:01,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:07:01,955 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:07:01,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:09" (3/4) ... [2022-11-20 12:07:01,959 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:07:01,965 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 12:07:01,966 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 12:07:01,969 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-20 12:07:01,969 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-20 12:07:01,970 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 12:07:01,970 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:07:01,970 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:07:02,003 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:07:02,004 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:07:02,004 INFO L158 Benchmark]: Toolchain (without parser) took 474793.01ms. Allocated memory was 172.0MB in the beginning and 260.0MB in the end (delta: 88.1MB). Free memory was 125.5MB in the beginning and 103.9MB in the end (delta: 21.6MB). Peak memory consumption was 111.8MB. Max. memory is 16.1GB. [2022-11-20 12:07:02,004 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory was 70.4MB in the beginning and 70.2MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:07:02,005 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1025.42ms. Allocated memory is still 172.0MB. Free memory was 125.5MB in the beginning and 93.3MB in the end (delta: 32.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-20 12:07:02,005 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.62ms. Allocated memory is still 172.0MB. Free memory was 93.3MB in the beginning and 91.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:07:02,006 INFO L158 Benchmark]: Boogie Preprocessor took 60.08ms. Allocated memory is still 172.0MB. Free memory was 91.3MB in the beginning and 89.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:07:02,006 INFO L158 Benchmark]: RCFGBuilder took 645.17ms. Allocated memory is still 172.0MB. Free memory was 89.2MB in the beginning and 138.1MB in the end (delta: -49.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 12:07:02,006 INFO L158 Benchmark]: TraceAbstraction took 472910.45ms. Allocated memory was 172.0MB in the beginning and 260.0MB in the end (delta: 88.1MB). Free memory was 137.1MB in the beginning and 106.5MB in the end (delta: 30.6MB). Peak memory consumption was 118.1MB. Max. memory is 16.1GB. [2022-11-20 12:07:02,007 INFO L158 Benchmark]: Witness Printer took 48.91ms. Allocated memory is still 260.0MB. Free memory was 106.5MB in the beginning and 103.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:07:02,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 127.9MB. Free memory was 70.4MB in the beginning and 70.2MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1025.42ms. Allocated memory is still 172.0MB. Free memory was 125.5MB in the beginning and 93.3MB in the end (delta: 32.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.62ms. Allocated memory is still 172.0MB. Free memory was 93.3MB in the beginning and 91.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.08ms. Allocated memory is still 172.0MB. Free memory was 91.3MB in the beginning and 89.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 645.17ms. Allocated memory is still 172.0MB. Free memory was 89.2MB in the beginning and 138.1MB in the end (delta: -49.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 472910.45ms. Allocated memory was 172.0MB in the beginning and 260.0MB in the end (delta: 88.1MB). Free memory was 137.1MB in the beginning and 106.5MB in the end (delta: 30.6MB). Peak memory consumption was 118.1MB. Max. memory is 16.1GB. * Witness Printer took 48.91ms. Allocated memory is still 260.0MB. Free memory was 106.5MB in the beginning and 103.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1107]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 472.6s, OverallIterations: 7, TraceHistogramMax: 8, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 25.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1569 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1569 mSDsluCounter, 1817 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1950 IncrementalHoareTripleChecker+Unchecked, 1700 mSDsCounter, 312 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3761 IncrementalHoareTripleChecker+Invalid, 6023 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 312 mSolverCounterUnsat, 117 mSDtfsCounter, 3761 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1132 GetRequests, 732 SyntacticMatches, 43 SemanticMatches, 357 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 6451 ImplicationChecksByTransitivity, 444.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=671occurred in iteration=6, InterpolantAutomatonStates: 144, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 444.3s InterpolantComputationTime, 976 NumberOfCodeBlocks, 976 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1382 ConstructedInterpolants, 225 QuantifiedInterpolants, 22681 SizeOfPredicates, 77 NumberOfNonLiveVariables, 1183 ConjunctsInSsa, 246 ConjunctsInUnsatCore, 17 InterpolantComputations, 2 PerfectInterpolantSequences, 144/513 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 12:07:02,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21daa224-6d4d-4255-9ff4-dee209b9585c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE