./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/prod4br-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench/prod4br-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9fc373a278835802938e4c08f2544f1651ce1de6dc177c0a58501e43687c477d ......................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:57:35,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:57:35,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:57:35,992 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:57:35,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:57:35,994 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:57:35,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:57:35,998 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:57:36,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:57:36,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:57:36,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:57:36,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:57:36,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:57:36,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:57:36,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:57:36,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:57:36,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:57:36,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:57:36,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:57:36,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:57:36,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:57:36,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:57:36,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:57:36,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:57:36,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:57:36,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:57:36,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:57:36,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:57:36,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:57:36,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:57:36,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:57:36,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:57:36,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:57:36,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:57:36,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:57:36,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:57:36,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:57:36,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:57:36,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:57:36,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:57:36,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:57:36,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:57:36,116 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:57:36,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:57:36,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:57:36,118 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:57:36,118 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:57:36,119 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:57:36,119 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:57:36,119 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:57:36,126 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:57:36,126 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:57:36,127 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:57:36,127 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:57:36,128 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:57:36,128 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:57:36,128 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:57:36,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:57:36,129 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:57:36,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:57:36,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:57:36,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:57:36,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:57:36,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:57:36,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:57:36,131 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:57:36,131 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:57:36,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:57:36,131 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:57:36,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:57:36,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:57:36,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:57:36,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:57:36,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:57:36,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:57:36,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:57:36,135 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:57:36,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:57:36,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:57:36,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:57:36,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:57:36,137 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fc373a278835802938e4c08f2544f1651ce1de6dc177c0a58501e43687c477d [2021-10-29 05:57:36,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:57:36,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:57:36,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:57:36,419 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:57:36,420 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:57:36,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/nla-digbench/prod4br-ll.c [2021-10-29 05:57:36,523 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/data/def235f04/6f8a4a9cd20b4e28815b5e73cab11569/FLAGe51576c35 [2021-10-29 05:57:36,997 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:57:36,997 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/sv-benchmarks/c/nla-digbench/prod4br-ll.c [2021-10-29 05:57:37,004 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/data/def235f04/6f8a4a9cd20b4e28815b5e73cab11569/FLAGe51576c35 [2021-10-29 05:57:37,487 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/data/def235f04/6f8a4a9cd20b4e28815b5e73cab11569 [2021-10-29 05:57:37,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:57:37,491 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:57:37,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:57:37,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:57:37,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:57:37,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:57:37" (1/1) ... [2021-10-29 05:57:37,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5508d79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:37, skipping insertion in model container [2021-10-29 05:57:37,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:57:37" (1/1) ... [2021-10-29 05:57:37,521 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:57:37,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:57:37,770 WARN L228 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_842fdc58-624f-4c01-a402-e712a8960f81/sv-benchmarks/c/nla-digbench/prod4br-ll.c[524,537] [2021-10-29 05:57:37,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:57:37,816 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:57:37,832 WARN L228 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_842fdc58-624f-4c01-a402-e712a8960f81/sv-benchmarks/c/nla-digbench/prod4br-ll.c[524,537] [2021-10-29 05:57:37,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:57:37,879 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:57:37,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:37 WrapperNode [2021-10-29 05:57:37,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:57:37,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:57:37,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:57:37,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:57:37,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:37" (1/1) ... [2021-10-29 05:57:37,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:37" (1/1) ... [2021-10-29 05:57:37,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:57:37,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:57:37,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:57:37,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:57:37,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:37" (1/1) ... [2021-10-29 05:57:37,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:37" (1/1) ... [2021-10-29 05:57:37,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:37" (1/1) ... [2021-10-29 05:57:37,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:37" (1/1) ... [2021-10-29 05:57:37,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:37" (1/1) ... [2021-10-29 05:57:37,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:37" (1/1) ... [2021-10-29 05:57:37,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:37" (1/1) ... [2021-10-29 05:57:37,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:57:37,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:57:37,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:57:37,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:57:37,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:37" (1/1) ... [2021-10-29 05:57:37,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:57:37,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:57:37,994 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:57:37,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:57:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:57:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:57:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:57:38,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:57:38,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:57:38,458 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-29 05:57:38,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:57:38 BoogieIcfgContainer [2021-10-29 05:57:38,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:57:38,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:57:38,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:57:38,478 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:57:38,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:57:37" (1/3) ... [2021-10-29 05:57:38,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e066af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:57:38, skipping insertion in model container [2021-10-29 05:57:38,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:57:37" (2/3) ... [2021-10-29 05:57:38,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e066af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:57:38, skipping insertion in model container [2021-10-29 05:57:38,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:57:38" (3/3) ... [2021-10-29 05:57:38,481 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll.c [2021-10-29 05:57:38,487 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:57:38,487 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-29 05:57:38,556 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:57:38,563 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:57:38,564 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-29 05:57:38,581 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 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) [2021-10-29 05:57:38,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-29 05:57:38,587 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:38,589 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-29 05:57:38,590 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:57:38,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:38,603 INFO L85 PathProgramCache]: Analyzing trace with hash 3443937, now seen corresponding path program 1 times [2021-10-29 05:57:38,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:57:38,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091747261] [2021-10-29 05:57:38,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:38,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:57:38,709 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:57:38,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1677958009] [2021-10-29 05:57:38,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:38,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:57:38,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:57:38,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:57:38,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-29 05:57:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:38,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 05:57:38,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:57:39,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:57:39,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:57:39,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091747261] [2021-10-29 05:57:39,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:57:39,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677958009] [2021-10-29 05:57:39,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677958009] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:39,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:39,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-29 05:57:39,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902043939] [2021-10-29 05:57:39,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:57:39,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:57:39,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:57:39,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:57:39,093 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 15 states have internal predecessors, (20), 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 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2021-10-29 05:57:40,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:40,963 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2021-10-29 05:57:40,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:57:40,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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 4 [2021-10-29 05:57:40,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:40,973 INFO L225 Difference]: With dead ends: 42 [2021-10-29 05:57:40,973 INFO L226 Difference]: Without dead ends: 23 [2021-10-29 05:57:40,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:57:40,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-29 05:57:41,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 12. [2021-10-29 05:57:41,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-10-29 05:57:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-29 05:57:41,007 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 4 [2021-10-29 05:57:41,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:41,007 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-29 05:57:41,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 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) [2021-10-29 05:57:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-29 05:57:41,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-29 05:57:41,008 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:41,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:57:41,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:41,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-29 05:57:41,229 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:57:41,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:41,229 INFO L85 PathProgramCache]: Analyzing trace with hash -475979277, now seen corresponding path program 1 times [2021-10-29 05:57:41,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:57:41,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778010348] [2021-10-29 05:57:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:41,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:57:41,246 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:57:41,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150208804] [2021-10-29 05:57:41,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:41,246 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:57:41,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:57:41,263 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:57:41,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-29 05:57:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:41,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-29 05:57:41,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:42,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:57:42,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:57:42,273 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:57:42,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778010348] [2021-10-29 05:57:42,274 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:57:42,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150208804] [2021-10-29 05:57:42,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150208804] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:42,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:42,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-29 05:57:42,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328857972] [2021-10-29 05:57:42,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:57:42,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:57:42,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:57:42,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:57:42,277 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-10-29 05:57:43,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:43,013 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-29 05:57:43,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 05:57:43,014 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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 [2021-10-29 05:57:43,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:43,015 INFO L225 Difference]: With dead ends: 22 [2021-10-29 05:57:43,015 INFO L226 Difference]: Without dead ends: 20 [2021-10-29 05:57:43,016 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:57:43,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-29 05:57:43,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 10. [2021-10-29 05:57:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2021-10-29 05:57:43,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-29 05:57:43,020 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2021-10-29 05:57:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:43,021 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-29 05:57:43,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-10-29 05:57:43,021 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-29 05:57:43,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:57:43,022 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:57:43,022 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:57:43,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:43,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:57:43,245 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:57:43,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:57:43,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2145572342, now seen corresponding path program 1 times [2021-10-29 05:57:43,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:57:43,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339296938] [2021-10-29 05:57:43,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:43,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:57:43,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-29 05:57:43,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717948182] [2021-10-29 05:57:43,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:57:43,275 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:57:43,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:57:43,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-29 05:57:43,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-29 05:57:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:57:43,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 05:57:43,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:57:43,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:57:43,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:57:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:57:43,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:57:43,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339296938] [2021-10-29 05:57:43,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-29 05:57:43,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717948182] [2021-10-29 05:57:43,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717948182] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:57:43,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:57:43,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:57:43,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832025464] [2021-10-29 05:57:43,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:57:43,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:57:43,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:57:43,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:57:43,500 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-10-29 05:57:43,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:57:43,555 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-10-29 05:57:43,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-29 05:57:43,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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 [2021-10-29 05:57:43,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:57:43,556 INFO L225 Difference]: With dead ends: 17 [2021-10-29 05:57:43,556 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:57:43,557 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:57:43,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:57:43,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:57:43,558 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) [2021-10-29 05:57:43,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:57:43,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-10-29 05:57:43,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:57:43,559 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:57:43,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2021-10-29 05:57:43,562 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:57:43,562 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:57:43,565 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:57:43,565 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:57:43,566 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:57:43,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:57:43,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-29 05:57:43,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:57:43,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:43,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:43,882 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:43,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:57:54,132 WARN L207 SmtUtils]: Spent 8.12 s on a formula simplification. DAG size of input: 38 DAG size of output: 21 [2021-10-29 05:57:54,201 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-29 05:57:54,202 INFO L857 garLoopResultBuilder]: For program point L32-2(lines 32 53) no Hoare annotation was computed. [2021-10-29 05:57:54,202 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:57:54,202 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-29 05:57:54,202 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-29 05:57:54,202 INFO L853 garLoopResultBuilder]: At program point L45-2(lines 32 53) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~p~0 1) (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0))))) [2021-10-29 05:57:54,202 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 35 36) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0)))) [2021-10-29 05:57:54,203 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-29 05:57:54,203 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0))) (= (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) 0)) [2021-10-29 05:57:54,203 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-29 05:57:54,203 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 11 17) the Hoare annotation is: (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~b~0))) [2021-10-29 05:57:54,203 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:57:54,203 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-29 05:57:54,203 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-29 05:57:54,204 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-29 05:57:54,204 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-29 05:57:54,207 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-29 05:57:54,208 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:57:54,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:57:54 BoogieIcfgContainer [2021-10-29 05:57:54,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:57:54,235 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:57:54,235 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:57:54,235 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:57:54,236 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:57:38" (3/4) ... [2021-10-29 05:57:54,239 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:57:54,248 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2021-10-29 05:57:54,256 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-29 05:57:54,257 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:57:54,258 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:57:54,324 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:57:54,324 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:57:54,325 INFO L168 Benchmark]: Toolchain (without parser) took 16833.71 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 74.9 MB in the beginning and 78.9 MB in the end (delta: -4.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:54,326 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 84.9 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:57:54,327 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.52 ms. Allocated memory is still 111.1 MB. Free memory was 74.7 MB in the beginning and 84.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:54,327 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.09 ms. Allocated memory is still 111.1 MB. Free memory was 83.9 MB in the beginning and 82.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:54,328 INFO L168 Benchmark]: Boogie Preprocessor took 23.46 ms. Allocated memory is still 111.1 MB. Free memory was 82.4 MB in the beginning and 81.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:57:54,328 INFO L168 Benchmark]: RCFGBuilder took 498.81 ms. Allocated memory is still 111.1 MB. Free memory was 81.3 MB in the beginning and 64.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:54,328 INFO L168 Benchmark]: TraceAbstraction took 15771.58 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 64.0 MB in the beginning and 82.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:54,329 INFO L168 Benchmark]: Witness Printer took 89.34 ms. Allocated memory is still 140.5 MB. Free memory was 82.0 MB in the beginning and 78.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:57:54,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 111.1 MB. Free memory was 85.0 MB in the beginning and 84.9 MB in the end (delta: 29.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 372.52 ms. Allocated memory is still 111.1 MB. Free memory was 74.7 MB in the beginning and 84.5 MB in the end (delta: -9.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.09 ms. Allocated memory is still 111.1 MB. Free memory was 83.9 MB in the beginning and 82.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.46 ms. Allocated memory is still 111.1 MB. Free memory was 82.4 MB in the beginning and 81.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 498.81 ms. Allocated memory is still 111.1 MB. Free memory was 81.3 MB in the beginning and 64.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15771.58 ms. Allocated memory was 111.1 MB in the beginning and 140.5 MB in the end (delta: 29.4 MB). Free memory was 64.0 MB in the beginning and 82.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * Witness Printer took 89.34 ms. Allocated memory is still 140.5 MB. Free memory was 82.0 MB in the beginning and 78.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 15.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 10.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 66 SDslu, 23 SDs, 0 SdLazy, 73 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 12 NumberOfFragments, 71 HoareAnnotationTreeSize, 4 FomulaSimplifications, 93 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 492 FormulaSimplificationTreeSizeReductionInter, 10.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 1 QuantifiedInterpolants, 233 SizeOfPredicates, 29 NumberOfNonLiveVariables, 182 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 1 <= cond && x * y == q + a * p * b - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((a == x && p == 1) && q == 0) && b == y) || (1 <= cond && x * y == q + a * p * b) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: x * y == q + a * p * b - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (1 <= cond && x * y == q + a * p * b) && a * b == 0 RESULT: Ultimate proved your program to be correct! [2021-10-29 05:57:54,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_842fdc58-624f-4c01-a402-e712a8960f81/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...