./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:04:36,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:04:36,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:04:36,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:04:36,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:04:36,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:04:36,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:04:36,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:04:36,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:04:36,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:04:36,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:04:36,228 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:04:36,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:04:36,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:04:36,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:04:36,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:04:36,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:04:36,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:04:36,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:04:36,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:04:36,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:04:36,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:04:36,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:04:36,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:04:36,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:04:36,280 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:04:36,281 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:04:36,282 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:04:36,284 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:04:36,285 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:04:36,286 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:04:36,287 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:04:36,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:04:36,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:04:36,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:04:36,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:04:36,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:04:36,295 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:04:36,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:04:36,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:04:36,298 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:04:36,299 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 21:04:36,350 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:04:36,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:04:36,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:04:36,352 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:04:36,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:04:36,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:04:36,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:04:36,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:04:36,355 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:04:36,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:04:36,357 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:04:36,357 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:04:36,358 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:04:36,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:04:36,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:04:36,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:04:36,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:04:36,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:04:36,359 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 21:04:36,360 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:04:36,360 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:04:36,360 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:04:36,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:04:36,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:04:36,361 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:04:36,361 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:04:36,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:36,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:04:36,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:04:36,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:04:36,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:04:36,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:04:36,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:04:36,365 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_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 [2022-11-02 21:04:36,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:04:36,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:04:36,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:04:36,806 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:04:36,807 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:04:36,808 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-02 21:04:36,904 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/data/de67ff7ad/61945888ed1346b697d49d2f282db0f6/FLAG874a969a7 [2022-11-02 21:04:37,494 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:04:37,495 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-02 21:04:37,510 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/data/de67ff7ad/61945888ed1346b697d49d2f282db0f6/FLAG874a969a7 [2022-11-02 21:04:37,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/data/de67ff7ad/61945888ed1346b697d49d2f282db0f6 [2022-11-02 21:04:37,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:04:37,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:04:37,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:37,849 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:04:37,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:04:37,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:04:37" (1/1) ... [2022-11-02 21:04:37,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d2342a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:37, skipping insertion in model container [2022-11-02 21:04:37,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:04:37" (1/1) ... [2022-11-02 21:04:37,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:04:37,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:04:38,253 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-02 21:04:38,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:38,279 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:04:38,316 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-02 21:04:38,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:04:38,337 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:04:38,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:38 WrapperNode [2022-11-02 21:04:38,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:04:38,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:38,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:04:38,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:04:38,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:38" (1/1) ... [2022-11-02 21:04:38,358 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:38" (1/1) ... [2022-11-02 21:04:38,398 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 124 [2022-11-02 21:04:38,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:04:38,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:04:38,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:04:38,405 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:04:38,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:38" (1/1) ... [2022-11-02 21:04:38,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:38" (1/1) ... [2022-11-02 21:04:38,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:38" (1/1) ... [2022-11-02 21:04:38,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:38" (1/1) ... [2022-11-02 21:04:38,440 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:38" (1/1) ... [2022-11-02 21:04:38,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:38" (1/1) ... [2022-11-02 21:04:38,463 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:38" (1/1) ... [2022-11-02 21:04:38,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:38" (1/1) ... [2022-11-02 21:04:38,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:04:38,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:04:38,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:04:38,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:04:38,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:38" (1/1) ... [2022-11-02 21:04:38,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:04:38,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:38,525 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:04:38,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:04:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:04:38,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:04:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:04:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:04:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 21:04:38,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 21:04:38,582 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 21:04:38,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 21:04:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 21:04:38,583 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 21:04:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:04:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 21:04:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 21:04:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 21:04:38,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:04:38,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:04:38,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:04:38,586 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 21:04:38,748 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:04:38,751 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:04:39,259 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:04:39,335 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:04:39,335 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 21:04:39,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:39 BoogieIcfgContainer [2022-11-02 21:04:39,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:04:39,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:04:39,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:04:39,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:04:39,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:04:37" (1/3) ... [2022-11-02 21:04:39,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6256a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:39, skipping insertion in model container [2022-11-02 21:04:39,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:04:38" (2/3) ... [2022-11-02 21:04:39,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6256a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:04:39, skipping insertion in model container [2022-11-02 21:04:39,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:39" (3/3) ... [2022-11-02 21:04:39,354 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2022-11-02 21:04:39,365 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:04:39,379 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:04:39,379 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-02 21:04:39,379 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:04:39,499 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 21:04:39,570 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 21:04:39,593 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 187 transitions, 398 flow [2022-11-02 21:04:39,600 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 187 transitions, 398 flow [2022-11-02 21:04:39,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 187 transitions, 398 flow [2022-11-02 21:04:39,695 INFO L130 PetriNetUnfolder]: 12/184 cut-off events. [2022-11-02 21:04:39,695 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 21:04:39,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 184 events. 12/184 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 146 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-11-02 21:04:39,703 INFO L118 LiptonReduction]: Number of co-enabled transitions 1622 [2022-11-02 21:04:50,321 INFO L133 LiptonReduction]: Checked pairs total: 2867 [2022-11-02 21:04:50,321 INFO L135 LiptonReduction]: Total number of compositions: 200 [2022-11-02 21:04:50,331 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 90 flow [2022-11-02 21:04:50,378 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 249 states, 238 states have (on average 3.004201680672269) internal successors, (715), 248 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:50,409 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:04:50,418 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=FINITE_AUTOMATA, 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;@183859f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:04:50,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-02 21:04:50,423 INFO L276 IsEmpty]: Start isEmpty. Operand has 249 states, 238 states have (on average 3.004201680672269) internal successors, (715), 248 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:50,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-02 21:04:50,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:50,429 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-02 21:04:50,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:04:50,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:50,439 INFO L85 PathProgramCache]: Analyzing trace with hash 23881, now seen corresponding path program 1 times [2022-11-02 21:04:50,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:50,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838311442] [2022-11-02 21:04:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:50,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:50,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:50,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838311442] [2022-11-02 21:04:50,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838311442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:50,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:50,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 21:04:50,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950111637] [2022-11-02 21:04:50,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:50,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:50,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:50,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:50,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:50,868 INFO L87 Difference]: Start difference. First operand has 249 states, 238 states have (on average 3.004201680672269) internal successors, (715), 248 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:51,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:51,050 INFO L93 Difference]: Finished difference Result 495 states and 1427 transitions. [2022-11-02 21:04:51,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:51,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-02 21:04:51,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:51,072 INFO L225 Difference]: With dead ends: 495 [2022-11-02 21:04:51,073 INFO L226 Difference]: Without dead ends: 491 [2022-11-02 21:04:51,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:51,077 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:51,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:51,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-02 21:04:51,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 248. [2022-11-02 21:04:51,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 238 states have (on average 2.991596638655462) internal successors, (712), 247 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:51,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 712 transitions. [2022-11-02 21:04:51,148 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 712 transitions. Word has length 2 [2022-11-02 21:04:51,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:51,149 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 712 transitions. [2022-11-02 21:04:51,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:51,150 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 712 transitions. [2022-11-02 21:04:51,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 21:04:51,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:51,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 21:04:51,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:04:51,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:04:51,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:51,152 INFO L85 PathProgramCache]: Analyzing trace with hash 741345, now seen corresponding path program 1 times [2022-11-02 21:04:51,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:51,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690213879] [2022-11-02 21:04:51,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:51,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:51,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:51,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:51,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690213879] [2022-11-02 21:04:51,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690213879] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:51,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464238124] [2022-11-02 21:04:51,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:51,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:51,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:51,385 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:51,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:04:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:51,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:04:51,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:51,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:51,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464238124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:51,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:51,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-02 21:04:51,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655744681] [2022-11-02 21:04:51,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:51,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:51,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:51,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:51,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:51,579 INFO L87 Difference]: Start difference. First operand 248 states and 712 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:51,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:51,873 INFO L93 Difference]: Finished difference Result 1223 states and 3541 transitions. [2022-11-02 21:04:51,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:04:51,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 21:04:51,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:51,885 INFO L225 Difference]: With dead ends: 1223 [2022-11-02 21:04:51,885 INFO L226 Difference]: Without dead ends: 1223 [2022-11-02 21:04:51,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:51,887 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 133 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:51,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 0 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:51,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2022-11-02 21:04:51,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 251. [2022-11-02 21:04:51,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 241 states have (on average 2.991701244813278) internal successors, (721), 250 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:51,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 721 transitions. [2022-11-02 21:04:51,918 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 721 transitions. Word has length 3 [2022-11-02 21:04:51,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:51,918 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 721 transitions. [2022-11-02 21:04:51,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:51,919 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 721 transitions. [2022-11-02 21:04:51,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-02 21:04:51,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:51,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-02 21:04:51,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:52,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:52,146 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:04:52,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:52,146 INFO L85 PathProgramCache]: Analyzing trace with hash 741346, now seen corresponding path program 1 times [2022-11-02 21:04:52,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:52,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451778020] [2022-11-02 21:04:52,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:52,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:52,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:52,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451778020] [2022-11-02 21:04:52,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451778020] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:52,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499899081] [2022-11-02 21:04:52,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:52,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:52,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:52,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:52,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:04:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:52,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:04:52,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:52,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:52,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499899081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:52,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:04:52,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-02 21:04:52,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378060312] [2022-11-02 21:04:52,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:52,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:04:52,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:52,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:04:52,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:52,424 INFO L87 Difference]: Start difference. First operand 251 states and 721 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:52,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:52,574 INFO L93 Difference]: Finished difference Result 493 states and 1422 transitions. [2022-11-02 21:04:52,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:04:52,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-02 21:04:52,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:52,579 INFO L225 Difference]: With dead ends: 493 [2022-11-02 21:04:52,579 INFO L226 Difference]: Without dead ends: 493 [2022-11-02 21:04:52,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:52,581 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:52,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:52,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-11-02 21:04:52,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 250. [2022-11-02 21:04:52,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 241 states have (on average 2.975103734439834) internal successors, (717), 249 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:52,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 717 transitions. [2022-11-02 21:04:52,598 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 717 transitions. Word has length 3 [2022-11-02 21:04:52,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:52,598 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 717 transitions. [2022-11-02 21:04:52,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:52,599 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 717 transitions. [2022-11-02 21:04:52,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 21:04:52,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:52,599 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-02 21:04:52,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:52,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:52,800 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:04:52,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:52,801 INFO L85 PathProgramCache]: Analyzing trace with hash 611599177, now seen corresponding path program 2 times [2022-11-02 21:04:52,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:52,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622174479] [2022-11-02 21:04:52,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:52,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:52,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:52,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622174479] [2022-11-02 21:04:52,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622174479] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:52,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148881819] [2022-11-02 21:04:52,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:04:52,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:52,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:52,937 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:52,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:04:53,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:04:53,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:53,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:04:53,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:53,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 21:04:53,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:53,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148881819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:53,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:04:53,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-02 21:04:53,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250246419] [2022-11-02 21:04:53,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:53,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:53,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:53,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:53,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:53,070 INFO L87 Difference]: Start difference. First operand 250 states and 717 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:53,124 INFO L93 Difference]: Finished difference Result 249 states and 716 transitions. [2022-11-02 21:04:53,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:53,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 21:04:53,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:53,136 INFO L225 Difference]: With dead ends: 249 [2022-11-02 21:04:53,136 INFO L226 Difference]: Without dead ends: 249 [2022-11-02 21:04:53,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:53,145 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:53,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:04:53,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-02 21:04:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 245. [2022-11-02 21:04:53,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 237 states have (on average 2.9873417721518987) internal successors, (708), 244 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:53,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 708 transitions. [2022-11-02 21:04:53,179 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 708 transitions. Word has length 6 [2022-11-02 21:04:53,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:53,180 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 708 transitions. [2022-11-02 21:04:53,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:53,181 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 708 transitions. [2022-11-02 21:04:53,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 21:04:53,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:53,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 21:04:53,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:53,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:53,383 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:04:53,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:53,383 INFO L85 PathProgramCache]: Analyzing trace with hash 616795874, now seen corresponding path program 1 times [2022-11-02 21:04:53,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:53,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518135399] [2022-11-02 21:04:53,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:53,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:53,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:53,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518135399] [2022-11-02 21:04:53,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518135399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:53,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:53,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:04:53,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698863927] [2022-11-02 21:04:53,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:53,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:53,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:53,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:53,493 INFO L87 Difference]: Start difference. First operand 245 states and 708 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:53,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:53,598 INFO L93 Difference]: Finished difference Result 335 states and 964 transitions. [2022-11-02 21:04:53,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:53,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 21:04:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:53,602 INFO L225 Difference]: With dead ends: 335 [2022-11-02 21:04:53,603 INFO L226 Difference]: Without dead ends: 335 [2022-11-02 21:04:53,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:53,606 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:53,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:53,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-11-02 21:04:53,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 283. [2022-11-02 21:04:53,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 275 states have (on average 3.098181818181818) internal successors, (852), 282 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:53,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 852 transitions. [2022-11-02 21:04:53,632 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 852 transitions. Word has length 6 [2022-11-02 21:04:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:53,632 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 852 transitions. [2022-11-02 21:04:53,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 852 transitions. [2022-11-02 21:04:53,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 21:04:53,634 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:53,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:53,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:04:53,634 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:04:53,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:53,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1940805010, now seen corresponding path program 1 times [2022-11-02 21:04:53,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:53,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487962967] [2022-11-02 21:04:53,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:53,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:53,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:53,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:53,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487962967] [2022-11-02 21:04:53,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487962967] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:53,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142644325] [2022-11-02 21:04:53,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:53,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:53,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:53,762 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:53,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:04:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:53,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:04:53,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:53,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:53,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142644325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:53,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:04:53,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-11-02 21:04:53,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321492263] [2022-11-02 21:04:53,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:53,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:53,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:53,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:53,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:53,893 INFO L87 Difference]: Start difference. First operand 283 states and 852 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:53,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:53,956 INFO L93 Difference]: Finished difference Result 284 states and 853 transitions. [2022-11-02 21:04:53,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:53,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 21:04:53,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:53,960 INFO L225 Difference]: With dead ends: 284 [2022-11-02 21:04:53,960 INFO L226 Difference]: Without dead ends: 284 [2022-11-02 21:04:53,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:04:53,961 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:53,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:53,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-02 21:04:53,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-11-02 21:04:53,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 276 states have (on average 3.0905797101449277) internal successors, (853), 283 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:53,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 853 transitions. [2022-11-02 21:04:53,974 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 853 transitions. Word has length 7 [2022-11-02 21:04:53,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:53,975 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 853 transitions. [2022-11-02 21:04:53,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:53,975 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 853 transitions. [2022-11-02 21:04:53,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:04:53,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:53,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:54,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:54,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 21:04:54,190 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:04:54,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:54,190 INFO L85 PathProgramCache]: Analyzing trace with hash -502578694, now seen corresponding path program 1 times [2022-11-02 21:04:54,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:54,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088048104] [2022-11-02 21:04:54,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:54,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:54,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:54,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088048104] [2022-11-02 21:04:54,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088048104] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:54,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183397687] [2022-11-02 21:04:54,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:54,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:54,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:54,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:54,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:04:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:54,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:04:54,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:54,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:54,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183397687] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:54,443 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:54,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 21:04:54,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372091666] [2022-11-02 21:04:54,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:54,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:54,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:54,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:54,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:54,447 INFO L87 Difference]: Start difference. First operand 284 states and 853 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:54,711 INFO L93 Difference]: Finished difference Result 606 states and 1847 transitions. [2022-11-02 21:04:54,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:04:54,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 21:04:54,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:54,717 INFO L225 Difference]: With dead ends: 606 [2022-11-02 21:04:54,717 INFO L226 Difference]: Without dead ends: 606 [2022-11-02 21:04:54,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:54,719 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:54,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 0 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 21:04:54,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-11-02 21:04:54,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 398. [2022-11-02 21:04:54,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 390 states have (on average 3.5871794871794873) internal successors, (1399), 397 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1399 transitions. [2022-11-02 21:04:54,746 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1399 transitions. Word has length 8 [2022-11-02 21:04:54,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:54,747 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 1399 transitions. [2022-11-02 21:04:54,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:54,748 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1399 transitions. [2022-11-02 21:04:54,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 21:04:54,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:54,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:54,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:54,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:54,977 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:04:54,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:54,978 INFO L85 PathProgramCache]: Analyzing trace with hash -502578687, now seen corresponding path program 1 times [2022-11-02 21:04:54,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:54,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299503333] [2022-11-02 21:04:54,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:54,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:55,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:55,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299503333] [2022-11-02 21:04:55,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299503333] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:55,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368598930] [2022-11-02 21:04:55,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:55,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:55,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:55,072 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:55,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 21:04:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:55,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:04:55,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:55,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:55,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:04:55,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368598930] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:55,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:55,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2022-11-02 21:04:55,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658587065] [2022-11-02 21:04:55,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:55,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 21:04:55,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:55,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 21:04:55,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:04:55,393 INFO L87 Difference]: Start difference. First operand 398 states and 1399 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:56,026 INFO L93 Difference]: Finished difference Result 626 states and 1854 transitions. [2022-11-02 21:04:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:04:56,027 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 21:04:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:56,032 INFO L225 Difference]: With dead ends: 626 [2022-11-02 21:04:56,032 INFO L226 Difference]: Without dead ends: 602 [2022-11-02 21:04:56,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:04:56,034 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 182 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:56,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 0 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:04:56,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-11-02 21:04:56,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 498. [2022-11-02 21:04:56,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 493 states have (on average 3.212981744421907) internal successors, (1584), 497 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1584 transitions. [2022-11-02 21:04:56,059 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1584 transitions. Word has length 8 [2022-11-02 21:04:56,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:56,060 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 1584 transitions. [2022-11-02 21:04:56,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,060 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1584 transitions. [2022-11-02 21:04:56,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-02 21:04:56,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:56,062 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:56,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:56,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:56,278 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:04:56,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:56,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1785452479, now seen corresponding path program 1 times [2022-11-02 21:04:56,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:56,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892561051] [2022-11-02 21:04:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:56,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:56,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:56,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:56,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892561051] [2022-11-02 21:04:56,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892561051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:56,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:56,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:04:56,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956182334] [2022-11-02 21:04:56,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:56,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:56,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:56,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:56,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:56,337 INFO L87 Difference]: Start difference. First operand 498 states and 1584 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:56,419 INFO L93 Difference]: Finished difference Result 638 states and 2024 transitions. [2022-11-02 21:04:56,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:56,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-02 21:04:56,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:56,424 INFO L225 Difference]: With dead ends: 638 [2022-11-02 21:04:56,424 INFO L226 Difference]: Without dead ends: 638 [2022-11-02 21:04:56,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:56,425 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:56,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:56,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-11-02 21:04:56,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 590. [2022-11-02 21:04:56,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 585 states have (on average 3.2957264957264956) internal successors, (1928), 589 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1928 transitions. [2022-11-02 21:04:56,449 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1928 transitions. Word has length 9 [2022-11-02 21:04:56,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:56,449 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 1928 transitions. [2022-11-02 21:04:56,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,450 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1928 transitions. [2022-11-02 21:04:56,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 21:04:56,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:56,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:56,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:04:56,458 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:04:56,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:56,458 INFO L85 PathProgramCache]: Analyzing trace with hash -485546612, now seen corresponding path program 1 times [2022-11-02 21:04:56,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:56,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888091537] [2022-11-02 21:04:56,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:56,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:56,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:56,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 21:04:56,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:56,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888091537] [2022-11-02 21:04:56,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888091537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:56,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:04:56,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 21:04:56,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923459988] [2022-11-02 21:04:56,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:56,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:56,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:56,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:56,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:56,516 INFO L87 Difference]: Start difference. First operand 590 states and 1928 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:56,592 INFO L93 Difference]: Finished difference Result 508 states and 1644 transitions. [2022-11-02 21:04:56,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:56,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-02 21:04:56,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:56,596 INFO L225 Difference]: With dead ends: 508 [2022-11-02 21:04:56,596 INFO L226 Difference]: Without dead ends: 361 [2022-11-02 21:04:56,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:04:56,597 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:56,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:56,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-11-02 21:04:56,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2022-11-02 21:04:56,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 358 states have (on average 3.340782122905028) internal successors, (1196), 360 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 1196 transitions. [2022-11-02 21:04:56,612 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 1196 transitions. Word has length 10 [2022-11-02 21:04:56,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:56,612 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 1196 transitions. [2022-11-02 21:04:56,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:56,612 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 1196 transitions. [2022-11-02 21:04:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 21:04:56,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:56,613 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:56,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:04:56,614 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:04:56,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:56,614 INFO L85 PathProgramCache]: Analyzing trace with hash -223739917, now seen corresponding path program 1 times [2022-11-02 21:04:56,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:56,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236022841] [2022-11-02 21:04:56,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:56,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:56,684 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:04:56,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:56,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236022841] [2022-11-02 21:04:56,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236022841] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:56,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631960471] [2022-11-02 21:04:56,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:56,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:56,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:56,687 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:56,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 21:04:56,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:56,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:04:56,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:56,827 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:04:56,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:04:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 21:04:56,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631960471] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:04:56,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:04:56,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-02 21:04:56,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668176775] [2022-11-02 21:04:56,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:04:56,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:04:56,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:56,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:04:56,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:56,871 INFO L87 Difference]: Start difference. First operand 361 states and 1196 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:57,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:57,027 INFO L93 Difference]: Finished difference Result 727 states and 2294 transitions. [2022-11-02 21:04:57,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:04:57,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-02 21:04:57,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:57,033 INFO L225 Difference]: With dead ends: 727 [2022-11-02 21:04:57,033 INFO L226 Difference]: Without dead ends: 727 [2022-11-02 21:04:57,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:04:57,034 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:57,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:04:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-11-02 21:04:57,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 535. [2022-11-02 21:04:57,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 532 states have (on average 3.5902255639097747) internal successors, (1910), 534 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:57,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 1910 transitions. [2022-11-02 21:04:57,058 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 1910 transitions. Word has length 11 [2022-11-02 21:04:57,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:57,058 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 1910 transitions. [2022-11-02 21:04:57,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:57,058 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 1910 transitions. [2022-11-02 21:04:57,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 21:04:57,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:04:57,059 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:57,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:57,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 21:04:57,285 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-02 21:04:57,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:04:57,286 INFO L85 PathProgramCache]: Analyzing trace with hash -537719326, now seen corresponding path program 2 times [2022-11-02 21:04:57,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:04:57,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127539640] [2022-11-02 21:04:57,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:04:57,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:04:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:04:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:04:57,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:04:57,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127539640] [2022-11-02 21:04:57,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127539640] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:04:57,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245944804] [2022-11-02 21:04:57,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:04:57,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:04:57,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:04:57,463 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:04:57,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 21:04:57,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 21:04:57,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:04:57,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:04:57,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:04:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 21:04:57,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:04:57,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245944804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:04:57,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:04:57,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-02 21:04:57,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634963570] [2022-11-02 21:04:57,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:04:57,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:04:57,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:04:57,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:04:57,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:57,619 INFO L87 Difference]: Start difference. First operand 535 states and 1910 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:57,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:04:57,663 INFO L93 Difference]: Finished difference Result 427 states and 1542 transitions. [2022-11-02 21:04:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:04:57,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 21:04:57,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:04:57,664 INFO L225 Difference]: With dead ends: 427 [2022-11-02 21:04:57,665 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 21:04:57,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:04:57,666 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:04:57,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:04:57,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 21:04:57,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 21:04:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:57,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 21:04:57,668 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-11-02 21:04:57,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:04:57,668 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 21:04:57,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:04:57,669 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 21:04:57,669 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 21:04:57,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2022-11-02 21:04:57,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-02 21:04:57,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-02 21:04:57,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-02 21:04:57,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-02 21:04:57,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-02 21:04:57,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2022-11-02 21:04:57,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2022-11-02 21:04:57,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2022-11-02 21:04:57,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-02 21:04:57,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-02 21:04:57,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-02 21:04:57,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-02 21:04:57,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:04:57,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 21:04:57,894 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:04:57,899 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 21:04:57,899 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:04:57,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:04:57 BasicIcfg [2022-11-02 21:04:57,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:04:57,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:04:57,903 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:04:57,903 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:04:57,904 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:04:39" (3/4) ... [2022-11-02 21:04:57,907 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 21:04:57,913 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-02 21:04:57,914 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-02 21:04:57,914 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-02 21:04:57,922 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-02 21:04:57,922 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 21:04:57,922 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 21:04:57,923 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 21:04:57,992 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 21:04:57,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:04:57,993 INFO L158 Benchmark]: Toolchain (without parser) took 20146.78ms. Allocated memory was 127.9MB in the beginning and 176.2MB in the end (delta: 48.2MB). Free memory was 89.5MB in the beginning and 77.0MB in the end (delta: 12.5MB). Peak memory consumption was 61.2MB. Max. memory is 16.1GB. [2022-11-02 21:04:57,993 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 127.9MB. Free memory is still 106.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:04:57,994 INFO L158 Benchmark]: CACSL2BoogieTranslator took 489.53ms. Allocated memory is still 127.9MB. Free memory was 89.3MB in the beginning and 99.4MB in the end (delta: -10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:04:57,994 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.69ms. Allocated memory is still 127.9MB. Free memory was 99.4MB in the beginning and 97.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:04:57,994 INFO L158 Benchmark]: Boogie Preprocessor took 63.93ms. Allocated memory is still 127.9MB. Free memory was 97.3MB in the beginning and 95.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:04:57,996 INFO L158 Benchmark]: RCFGBuilder took 869.59ms. Allocated memory is still 127.9MB. Free memory was 95.8MB in the beginning and 73.7MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-02 21:04:57,996 INFO L158 Benchmark]: TraceAbstraction took 18560.78ms. Allocated memory was 127.9MB in the beginning and 176.2MB in the end (delta: 48.2MB). Free memory was 72.7MB in the beginning and 80.1MB in the end (delta: -7.4MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2022-11-02 21:04:57,997 INFO L158 Benchmark]: Witness Printer took 89.83ms. Allocated memory is still 176.2MB. Free memory was 80.1MB in the beginning and 77.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:04:57,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 127.9MB. Free memory is still 106.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 489.53ms. Allocated memory is still 127.9MB. Free memory was 89.3MB in the beginning and 99.4MB in the end (delta: -10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.69ms. Allocated memory is still 127.9MB. Free memory was 99.4MB in the beginning and 97.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.93ms. Allocated memory is still 127.9MB. Free memory was 97.3MB in the beginning and 95.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 869.59ms. Allocated memory is still 127.9MB. Free memory was 95.8MB in the beginning and 73.7MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 18560.78ms. Allocated memory was 127.9MB in the beginning and 176.2MB in the end (delta: 48.2MB). Free memory was 72.7MB in the beginning and 80.1MB in the end (delta: -7.4MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. * Witness Printer took 89.83ms. Allocated memory is still 176.2MB. Free memory was 80.1MB in the beginning and 77.0MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10.7s, 185 PlacesBefore, 40 PlacesAfterwards, 187 TransitionsBefore, 33 TransitionsAfterwards, 1622 CoEnabledTransitionPairs, 7 FixpointIterations, 125 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 24 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 200 TotalNumberOfCompositions, 2867 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2194, positive: 2115, positive conditional: 0, positive unconditional: 2115, negative: 79, negative conditional: 0, negative unconditional: 79, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1162, positive: 1131, positive conditional: 0, positive unconditional: 1131, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1162, positive: 1131, positive conditional: 0, positive unconditional: 1131, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 177, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 177, negative conditional: 0, negative unconditional: 177, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2194, positive: 984, positive conditional: 0, positive unconditional: 984, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 1162, unknown conditional: 0, unknown unconditional: 1162] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 93, Positive conditional cache size: 0, Positive unconditional cache size: 93, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 213 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 18.3s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 10.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 629 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 629 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 727 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1371 IncrementalHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 0 mSDtfsCounter, 1371 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=590occurred in iteration=9, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 2066 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 143 NumberOfCodeBlocks, 133 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 149 ConstructedInterpolants, 0 QuantifiedInterpolants, 350 SizeOfPredicates, 9 NumberOfNonLiveVariables, 1088 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 49/80 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 21:04:58,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ee9bf807-8672-40fd-88ae-92e7a6a80101/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE