./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 59f8de3095dec84b471ea17a2f8054509a628ca6c3fce9f023768548ca2b0891 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:52:14,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:52:14,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:52:14,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:52:14,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:52:14,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:52:14,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:52:14,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:52:14,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:52:14,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:52:14,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:52:14,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:52:14,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:52:14,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:52:14,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:52:14,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:52:14,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:52:14,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:52:14,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:52:14,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:52:14,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:52:14,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:52:14,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:52:14,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:52:14,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:52:14,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:52:14,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:52:14,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:52:14,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:52:14,948 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:52:14,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:52:14,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:52:14,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:52:14,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:52:14,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:52:14,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:52:14,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:52:14,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:52:14,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:52:14,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:52:14,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:52:14,957 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-12 22:52:15,001 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:52:15,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:52:15,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:52:15,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:52:15,003 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:52:15,004 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:52:15,004 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:52:15,004 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:52:15,004 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:52:15,004 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:52:15,005 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:52:15,006 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:52:15,006 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:52:15,006 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:52:15,006 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:52:15,006 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:52:15,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:52:15,008 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-12 22:52:15,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:52:15,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:52:15,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:52:15,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:52:15,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:52:15,009 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-12 22:52:15,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:52:15,009 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:52:15,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:52:15,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:52:15,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:52:15,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:15,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:52:15,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:52:15,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:52:15,013 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:52:15,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:52:15,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:52:15,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:52:15,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:52:15,014 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_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59f8de3095dec84b471ea17a2f8054509a628ca6c3fce9f023768548ca2b0891 [2021-11-12 22:52:15,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:52:15,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:52:15,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:52:15,306 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:52:15,307 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:52:15,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2021-11-12 22:52:15,391 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/data/94efc9b14/178a0b9a1beb403780fae1728134f599/FLAG5476a99e3 [2021-11-12 22:52:15,929 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:52:15,930 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2021-11-12 22:52:15,942 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/data/94efc9b14/178a0b9a1beb403780fae1728134f599/FLAG5476a99e3 [2021-11-12 22:52:16,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/data/94efc9b14/178a0b9a1beb403780fae1728134f599 [2021-11-12 22:52:16,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:52:16,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:52:16,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:16,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:52:16,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:52:16,332 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@401a959c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16, skipping insertion in model container [2021-11-12 22:52:16,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:52:16,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:52:16,509 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:16,517 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:52:16,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:52:16,578 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:52:16,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16 WrapperNode [2021-11-12 22:52:16,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:52:16,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:52:16,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:52:16,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:52:16,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:52:16,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:52:16,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:52:16,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:52:16,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:52:16,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:52:16,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:52:16,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:52:16,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (1/1) ... [2021-11-12 22:52:16,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:52:16,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:16,682 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:52:16,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:52:16,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:52:16,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:52:16,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:52:16,888 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 22:52:16,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:52:16 BoogieIcfgContainer [2021-11-12 22:52:16,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:52:16,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:52:16,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:52:16,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:52:16,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:52:16" (1/3) ... [2021-11-12 22:52:16,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315b559b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:52:16, skipping insertion in model container [2021-11-12 22:52:16,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:52:16" (2/3) ... [2021-11-12 22:52:16,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315b559b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:52:16, skipping insertion in model container [2021-11-12 22:52:16,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:52:16" (3/3) ... [2021-11-12 22:52:16,899 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi3.c [2021-11-12 22:52:16,904 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:52:16,904 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-12 22:52:16,946 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:52:16,954 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 [2021-11-12 22:52:16,954 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-12 22:52:16,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 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) [2021-11-12 22:52:16,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 22:52:16,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:16,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 22:52:16,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-12 22:52:16,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash 65732945, now seen corresponding path program 1 times [2021-11-12 22:52:17,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:52:17,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153409910] [2021-11-12 22:52:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:17,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:52:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:17,211 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:52:17,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153409910] [2021-11-12 22:52:17,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153409910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:17,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:17,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:52:17,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013580528] [2021-11-12 22:52:17,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:17,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:52:17,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:52:17,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:52:17,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:52:17,257 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-12 22:52:17,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:17,343 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-11-12 22:52:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:52:17,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-12 22:52:17,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:17,354 INFO L225 Difference]: With dead ends: 21 [2021-11-12 22:52:17,373 INFO L226 Difference]: Without dead ends: 16 [2021-11-12 22:52:17,376 INFO L932 BasicCegarLoop]: 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 [2021-11-12 22:52:17,396 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.01ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.46ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:17,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 10 Invalid, 19 Unknown, 0 Unchecked, 1.01ms Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 64.46ms Time] [2021-11-12 22:52:17,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-12 22:52:17,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-11-12 22:52:17,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 14 states have internal predecessors, (17), 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) [2021-11-12 22:52:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-12 22:52:17,488 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 5 [2021-11-12 22:52:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:17,488 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-12 22:52:17,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-12 22:52:17,489 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-12 22:52:17,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 22:52:17,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:17,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 22:52:17,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 22:52:17,491 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-12 22:52:17,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:17,492 INFO L85 PathProgramCache]: Analyzing trace with hash 65733137, now seen corresponding path program 1 times [2021-11-12 22:52:17,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:52:17,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248111464] [2021-11-12 22:52:17,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:17,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:52:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:17,562 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:52:17,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248111464] [2021-11-12 22:52:17,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248111464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:17,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:17,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 22:52:17,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940615490] [2021-11-12 22:52:17,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:17,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:52:17,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:52:17,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:52:17,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:52:17,571 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-12 22:52:17,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:17,604 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-11-12 22:52:17,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:52:17,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-11-12 22:52:17,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:17,608 INFO L225 Difference]: With dead ends: 30 [2021-11-12 22:52:17,608 INFO L226 Difference]: Without dead ends: 17 [2021-11-12 22:52:17,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:52:17,612 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.04ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:17,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 12 Invalid, 10 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 26.04ms Time] [2021-11-12 22:52:17,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-12 22:52:17,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-12 22:52:17,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 16 states have internal predecessors, (19), 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) [2021-11-12 22:52:17,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-12 22:52:17,621 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 5 [2021-11-12 22:52:17,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:17,622 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-12 22:52:17,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-11-12 22:52:17,623 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-11-12 22:52:17,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 22:52:17,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:17,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 22:52:17,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 22:52:17,625 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-12 22:52:17,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:17,627 INFO L85 PathProgramCache]: Analyzing trace with hash 2037721346, now seen corresponding path program 1 times [2021-11-12 22:52:17,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:52:17,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467264714] [2021-11-12 22:52:17,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:17,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:52:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:17,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:17,680 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:52:17,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467264714] [2021-11-12 22:52:17,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467264714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:17,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:52:17,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 22:52:17,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812697524] [2021-11-12 22:52:17,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:17,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 22:52:17,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:52:17,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 22:52:17,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 22:52:17,690 INFO L87 Difference]: Start difference. First operand 17 states and 19 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) [2021-11-12 22:52:17,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:17,706 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-11-12 22:52:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 22:52:17,707 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 [2021-11-12 22:52:17,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:17,708 INFO L225 Difference]: With dead ends: 17 [2021-11-12 22:52:17,709 INFO L226 Difference]: Without dead ends: 16 [2021-11-12 22:52:17,709 INFO L932 BasicCegarLoop]: 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 [2021-11-12 22:52:17,711 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.22ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:17,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 6 Invalid, 9 Unknown, 0 Unchecked, 0.40ms Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 11.22ms Time] [2021-11-12 22:52:17,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-12 22:52:17,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-12 22:52:17,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 15 states have internal predecessors, (18), 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) [2021-11-12 22:52:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-12 22:52:17,722 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2021-11-12 22:52:17,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:17,722 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-12 22:52:17,723 INFO L471 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) [2021-11-12 22:52:17,723 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-11-12 22:52:17,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 22:52:17,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:17,724 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-11-12 22:52:17,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 22:52:17,725 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-12 22:52:17,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:17,727 INFO L85 PathProgramCache]: Analyzing trace with hash 688900812, now seen corresponding path program 1 times [2021-11-12 22:52:17,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:52:17,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732729303] [2021-11-12 22:52:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:17,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:52:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:17,765 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:52:17,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732729303] [2021-11-12 22:52:17,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732729303] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:52:17,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850801881] [2021-11-12 22:52:17,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:17,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:52:17,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:17,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:52:17,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-12 22:52:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:17,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:52:17,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:17,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 22:52:17,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850801881] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:17,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [197283698] [2021-11-12 22:52:17,990 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2021-11-12 22:52:17,991 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:52:17,996 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:52:18,002 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:52:18,002 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:52:18,061 INFO L180 QuantifierPusher]: treesize reduction 13, result has 73.5 percent of original size [2021-11-12 22:52:18,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:52:18,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:18,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:18,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:18,177 INFO L180 QuantifierPusher]: treesize reduction 10, result has 88.9 percent of original size [2021-11-12 22:52:18,185 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-12 22:52:18,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:18,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:18,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:18,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:18,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:18,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:18,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:18,259 INFO L180 QuantifierPusher]: treesize reduction 11, result has 75.6 percent of original size [2021-11-12 22:52:18,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-12 22:52:18,273 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:52:18,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [197283698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:18,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:52:18,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3, 3] total 9 [2021-11-12 22:52:18,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528374386] [2021-11-12 22:52:18,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:18,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:52:18,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:52:18,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:52:18,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:52:18,461 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2021-11-12 22:52:18,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:18,534 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-11-12 22:52:18,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:52:18,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 9 [2021-11-12 22:52:18,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:18,536 INFO L225 Difference]: With dead ends: 26 [2021-11-12 22:52:18,537 INFO L226 Difference]: Without dead ends: 23 [2021-11-12 22:52:18,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:52:18,543 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.31ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.15ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:18,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 3 Invalid, 42 Unknown, 0 Unchecked, 2.31ms Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 57.15ms Time] [2021-11-12 22:52:18,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-12 22:52:18,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-11-12 22:52:18,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 21 states have internal predecessors, (25), 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) [2021-11-12 22:52:18,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-11-12 22:52:18,556 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 9 [2021-11-12 22:52:18,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:18,557 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-11-12 22:52:18,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2021-11-12 22:52:18,560 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-11-12 22:52:18,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-12 22:52:18,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:52:18,561 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:52:18,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:18,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:52:18,773 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-12 22:52:18,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:52:18,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1040300673, now seen corresponding path program 1 times [2021-11-12 22:52:18,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 22:52:18,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892026106] [2021-11-12 22:52:18,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:18,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 22:52:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:18,805 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:52:18,805 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 22:52:18,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892026106] [2021-11-12 22:52:18,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892026106] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-12 22:52:18,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818183668] [2021-11-12 22:52:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:52:18,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:52:18,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:52:18,807 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 22:52:18,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-12 22:52:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:52:18,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 22:52:18,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:52:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:52:18,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:52:18,990 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 22:52:18,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818183668] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 22:52:18,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [150860616] [2021-11-12 22:52:18,993 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-11-12 22:52:18,993 INFO L166 IcfgInterpreter]: Building call graph [2021-11-12 22:52:18,993 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-12 22:52:18,994 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-12 22:52:18,994 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-12 22:52:19,016 INFO L180 QuantifierPusher]: treesize reduction 6, result has 85.0 percent of original size [2021-11-12 22:52:19,018 INFO L185 QuantifierPusher]: treesize reduction 29, result has 3.3 percent of original size 1 [2021-11-12 22:52:19,022 INFO L180 QuantifierPusher]: treesize reduction 43, result has 2.3 percent of original size [2021-11-12 22:52:19,023 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-12 22:52:19,036 INFO L180 QuantifierPusher]: treesize reduction 13, result has 73.5 percent of original size [2021-11-12 22:52:19,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-12 22:52:19,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,109 INFO L180 QuantifierPusher]: treesize reduction 11, result has 88.0 percent of original size [2021-11-12 22:52:19,129 INFO L185 QuantifierPusher]: treesize reduction 31, result has 54.4 percent of original size 37 [2021-11-12 22:52:19,145 INFO L180 QuantifierPusher]: treesize reduction 39, result has 52.4 percent of original size [2021-11-12 22:52:19,149 INFO L185 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size 22 [2021-11-12 22:52:19,161 INFO L180 QuantifierPusher]: treesize reduction 16, result has 84.2 percent of original size [2021-11-12 22:52:19,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-12 22:52:19,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:19,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-12 22:52:19,237 INFO L180 QuantifierPusher]: treesize reduction 5, result has 86.1 percent of original size [2021-11-12 22:52:19,240 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-12 22:52:19,244 INFO L180 QuantifierPusher]: treesize reduction 5, result has 87.2 percent of original size [2021-11-12 22:52:19,247 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-12 22:52:19,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-12 22:52:19,274 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:52:19,282 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-11-12 22:52:19,289 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-12 22:52:19,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [150860616] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 22:52:19,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-12 22:52:19,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 3, 3] total 13 [2021-11-12 22:52:19,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519184968] [2021-11-12 22:52:19,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:52:19,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:52:19,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 22:52:19,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:52:19,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:52:19,460 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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) [2021-11-12 22:52:19,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:52:19,519 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-11-12 22:52:19,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:52:19,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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 13 [2021-11-12 22:52:19,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:52:19,520 INFO L225 Difference]: With dead ends: 24 [2021-11-12 22:52:19,520 INFO L226 Difference]: Without dead ends: 0 [2021-11-12 22:52:19,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:52:19,521 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.69ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.44ms IncrementalHoareTripleChecker+Time [2021-11-12 22:52:19,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 35 Unknown, 0 Unchecked, 0.69ms Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 28.44ms Time] [2021-11-12 22:52:19,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-12 22:52:19,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-12 22:52:19,523 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) [2021-11-12 22:52:19,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-12 22:52:19,523 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-11-12 22:52:19,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:52:19,523 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-12 22:52:19,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 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) [2021-11-12 22:52:19,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-12 22:52:19,524 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-12 22:52:19,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2021-11-12 22:52:19,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2021-11-12 22:52:19,526 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2021-11-12 22:52:19,527 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2021-11-12 22:52:19,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:52:19,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 22:52:19,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-12 22:52:19,831 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-11-12 22:52:19,831 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-12 22:52:19,831 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-11-12 22:52:19,831 INFO L858 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-11-12 22:52:19,832 INFO L858 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-11-12 22:52:19,832 INFO L858 garLoopResultBuilder]: For program point L21(lines 21 26) no Hoare annotation was computed. [2021-11-12 22:52:19,832 INFO L854 garLoopResultBuilder]: At program point L21-2(lines 20 27) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~n~0#1| 2147483647)) (.cse1 (<= 0 |ULTIMATE.start_main_~m~0#1|)) (.cse2 (<= 0 |ULTIMATE.start_main_~j~0#1|)) (.cse3 (<= 0 |ULTIMATE.start_main_~i~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~m~0#1| 2147483647))) (or (and .cse0 .cse1 .cse2 (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 (<= 0 |ULTIMATE.start_main_~n~0#1|) .cse4 (<= |ULTIMATE.start_main_~j~0#1| 0)))) [2021-11-12 22:52:19,832 INFO L858 garLoopResultBuilder]: For program point L17(lines 17 28) no Hoare annotation was computed. [2021-11-12 22:52:19,832 INFO L861 garLoopResultBuilder]: At program point L17-1(lines 17 28) the Hoare annotation is: true [2021-11-12 22:52:19,832 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-11-12 22:52:19,833 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2021-11-12 22:52:19,833 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-12 22:52:19,833 INFO L858 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-11-12 22:52:19,833 INFO L858 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-11-12 22:52:19,836 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-12 22:52:19,837 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 22:52:19,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 10:52:19 BoogieIcfgContainer [2021-11-12 22:52:19,858 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 22:52:19,859 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 22:52:19,859 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 22:52:19,860 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 22:52:19,860 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:52:16" (3/4) ... [2021-11-12 22:52:19,863 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-12 22:52:19,872 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-12 22:52:19,872 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-12 22:52:19,872 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-12 22:52:19,909 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 22:52:19,910 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 22:52:19,911 INFO L158 Benchmark]: Toolchain (without parser) took 3583.45ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 62.2MB in the beginning and 87.6MB in the end (delta: -25.4MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2021-11-12 22:52:19,911 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 94.4MB. Free memory was 48.8MB in the beginning and 48.7MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:52:19,912 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.62ms. Allocated memory is still 94.4MB. Free memory was 62.0MB in the beginning and 72.4MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 22:52:19,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.41ms. Allocated memory is still 94.4MB. Free memory was 72.4MB in the beginning and 71.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:52:19,919 INFO L158 Benchmark]: Boogie Preprocessor took 25.28ms. Allocated memory is still 94.4MB. Free memory was 71.3MB in the beginning and 70.3MB in the end (delta: 965.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:52:19,920 INFO L158 Benchmark]: RCFGBuilder took 246.05ms. Allocated memory is still 94.4MB. Free memory was 70.3MB in the beginning and 61.5MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 22:52:19,920 INFO L158 Benchmark]: TraceAbstraction took 2966.37ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 60.9MB in the beginning and 90.8MB in the end (delta: -29.9MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2021-11-12 22:52:19,921 INFO L158 Benchmark]: Witness Printer took 50.90ms. Allocated memory is still 125.8MB. Free memory was 90.7MB in the beginning and 87.6MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-12 22:52:19,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 94.4MB. Free memory was 48.8MB in the beginning and 48.7MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.62ms. Allocated memory is still 94.4MB. Free memory was 62.0MB in the beginning and 72.4MB in the end (delta: -10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.41ms. Allocated memory is still 94.4MB. Free memory was 72.4MB in the beginning and 71.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.28ms. Allocated memory is still 94.4MB. Free memory was 71.3MB in the beginning and 70.3MB in the end (delta: 965.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 246.05ms. Allocated memory is still 94.4MB. Free memory was 70.3MB in the beginning and 61.5MB in the end (delta: 8.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2966.37ms. Allocated memory was 94.4MB in the beginning and 125.8MB in the end (delta: 31.5MB). Free memory was 60.9MB in the beginning and 90.8MB in the end (delta: -29.9MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. * Witness Printer took 50.90ms. Allocated memory is still 125.8MB. Free memory was 90.7MB in the beginning and 87.6MB 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: 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: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 187.31ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 31 SdHoareTripleChecker+Invalid, 154.16ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90 IncrementalHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 24 mSDtfsCounter, 90 mSolverCounterSat, 5.02ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=4, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 43 HoareAnnotationTreeSize, 2 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 51 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 73 ConstructedInterpolants, 0 QuantifiedInterpolants, 209 SizeOfPredicates, 0 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 7/30 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: OVERALL_TIME: 579.53ms, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 14, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 47, TOOLS_POST_TIME: 203.03ms, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME: 0.00ms, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME: 0.00ms, TOOLS_QUANTIFIERELIM_APPLICATIONS: 47, TOOLS_QUANTIFIERELIM_TIME: 177.67ms, TOOLS_QUANTIFIERELIM_MAX_TIME: 30.76ms, FLUID_QUERY_TIME: 5.53ms, FLUID_QUERIES: 79, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME: 75.38ms, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.00ms, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME: 212.65ms, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME: 13.87ms, DOMAIN_ISBOTTOM_APPLICATIONS: 14, DOMAIN_ISBOTTOM_TIME: 12.94ms, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 498.10ms, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 497.93ms, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME: 0.00ms, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.00ms, PROCEDURE_GRAPH_BUILDER_TIME: 2.01ms, PATH_EXPR_TIME: 3.18ms, REGEX_TO_DAG_TIME: 3.49ms, DAG_COMPRESSION_TIME: 10.65ms, DAG_COMPRESSION_PROCESSED_NODES: 104, DAG_COMPRESSION_RETAINED_NODES: 53, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((n <= 2147483647 && 0 <= m) && 0 <= j) && i < n) && 0 <= i) && m <= 2147483647) || ((((((n <= 2147483647 && 0 <= m) && 0 <= j) && 0 <= i) && 0 <= n) && m <= 2147483647) && j <= 0) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-12 22:52:19,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95499497-e559-405e-8305-9293989db0c5/bin/utaipan-vmNK8stdcF/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