./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig5.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw --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 c60ed4386f3e9dfc23f4a7e8bce2e4e63a0ed4f2dd3fba97236df028c39e6948 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-20 06:08:24,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-20 06:08:24,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-20 06:08:24,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-20 06:08:24,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-20 06:08:24,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-20 06:08:24,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-20 06:08:24,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-20 06:08:24,804 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-20 06:08:24,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-20 06:08:24,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-20 06:08:24,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-20 06:08:24,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-20 06:08:24,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-20 06:08:24,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-20 06:08:24,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-20 06:08:24,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-20 06:08:24,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-20 06:08:24,841 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-20 06:08:24,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-20 06:08:24,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-20 06:08:24,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-20 06:08:24,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-20 06:08:24,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-20 06:08:24,868 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-20 06:08:24,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-20 06:08:24,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-20 06:08:24,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-20 06:08:24,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-20 06:08:24,875 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-20 06:08:24,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-20 06:08:24,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-20 06:08:24,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-20 06:08:24,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-20 06:08:24,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-20 06:08:24,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-20 06:08:24,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-20 06:08:24,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-20 06:08:24,886 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-20 06:08:24,887 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-20 06:08:24,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-20 06:08:24,889 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-20 06:08:24,950 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-20 06:08:24,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-20 06:08:24,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-20 06:08:24,952 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-20 06:08:24,953 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-20 06:08:24,953 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-20 06:08:24,953 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-20 06:08:24,954 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-20 06:08:24,961 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-20 06:08:24,961 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-20 06:08:24,963 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-20 06:08:24,963 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-20 06:08:24,964 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-20 06:08:24,964 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-20 06:08:24,964 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-20 06:08:24,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-20 06:08:24,965 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-20 06:08:24,966 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-20 06:08:24,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-20 06:08:24,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-20 06:08:24,967 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-20 06:08:24,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-20 06:08:24,967 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-20 06:08:24,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-20 06:08:24,968 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-20 06:08:24,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-20 06:08:24,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-20 06:08:24,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-20 06:08:24,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:08:24,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-20 06:08:24,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-20 06:08:24,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-20 06:08:24,972 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-20 06:08:24,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-20 06:08:24,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-20 06:08:24,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-20 06:08:24,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-20 06:08:24,973 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_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c60ed4386f3e9dfc23f4a7e8bce2e4e63a0ed4f2dd3fba97236df028c39e6948 [2021-10-20 06:08:25,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-20 06:08:25,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-20 06:08:25,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-20 06:08:25,388 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-20 06:08:25,388 INFO L275 PluginConnector]: CDTParser initialized [2021-10-20 06:08:25,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig5.c [2021-10-20 06:08:25,512 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/data/dc3865995/345c853c6dfc4fa09c3a3e239fdd5bb2/FLAGe6d97e52e [2021-10-20 06:08:26,004 INFO L306 CDTParser]: Found 1 translation units. [2021-10-20 06:08:26,005 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig5.c [2021-10-20 06:08:26,010 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/data/dc3865995/345c853c6dfc4fa09c3a3e239fdd5bb2/FLAGe6d97e52e [2021-10-20 06:08:26,392 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/data/dc3865995/345c853c6dfc4fa09c3a3e239fdd5bb2 [2021-10-20 06:08:26,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-20 06:08:26,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-20 06:08:26,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-20 06:08:26,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-20 06:08:26,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-20 06:08:26,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:08:26" (1/1) ... [2021-10-20 06:08:26,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@287ea3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:08:26, skipping insertion in model container [2021-10-20 06:08:26,405 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:08:26" (1/1) ... [2021-10-20 06:08:26,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-20 06:08:26,427 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-20 06:08:26,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:08:26,574 INFO L203 MainTranslator]: Completed pre-run [2021-10-20 06:08:26,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-20 06:08:26,620 INFO L208 MainTranslator]: Completed translation [2021-10-20 06:08:26,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:08:26 WrapperNode [2021-10-20 06:08:26,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-20 06:08:26,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-20 06:08:26,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-20 06:08:26,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-20 06:08:26,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:08:26" (1/1) ... [2021-10-20 06:08:26,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:08:26" (1/1) ... [2021-10-20 06:08:26,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-20 06:08:26,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-20 06:08:26,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-20 06:08:26,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-20 06:08:26,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:08:26" (1/1) ... [2021-10-20 06:08:26,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:08:26" (1/1) ... [2021-10-20 06:08:26,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:08:26" (1/1) ... [2021-10-20 06:08:26,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:08:26" (1/1) ... [2021-10-20 06:08:26,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:08:26" (1/1) ... [2021-10-20 06:08:26,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:08:26" (1/1) ... [2021-10-20 06:08:26,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:08:26" (1/1) ... [2021-10-20 06:08:26,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-20 06:08:26,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-20 06:08:26,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-20 06:08:26,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-20 06:08:26,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:08:26" (1/1) ... [2021-10-20 06:08:26,744 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-20 06:08:26,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:08:26,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-20 06:08:26,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-20 06:08:26,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-20 06:08:26,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-20 06:08:27,078 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-20 06:08:27,078 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-20 06:08:27,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:08:27 BoogieIcfgContainer [2021-10-20 06:08:27,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-20 06:08:27,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-20 06:08:27,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-20 06:08:27,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-20 06:08:27,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:08:26" (1/3) ... [2021-10-20 06:08:27,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d4f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:08:27, skipping insertion in model container [2021-10-20 06:08:27,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:08:26" (2/3) ... [2021-10-20 06:08:27,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d4f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:08:27, skipping insertion in model container [2021-10-20 06:08:27,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:08:27" (3/3) ... [2021-10-20 06:08:27,097 INFO L111 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig5.c [2021-10-20 06:08:27,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-20 06:08:27,104 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-20 06:08:27,156 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-20 06:08:27,164 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 [2021-10-20 06:08:27,165 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-20 06:08:27,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:08:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-20 06:08:27,194 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:08:27,195 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-20 06:08:27,196 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-20 06:08:27,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:08:27,202 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-20 06:08:27,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:08:27,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600192204] [2021-10-20 06:08:27,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:08:27,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:08:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:08:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:08:27,399 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:08:27,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600192204] [2021-10-20 06:08:27,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600192204] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:08:27,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:08:27,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-20 06:08:27,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700593419] [2021-10-20 06:08:27,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:08:27,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:08:27,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:08:27,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:08:27,450 INFO L87 Difference]: Start difference. First operand has 15 states, 8 states have (on average 1.875) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:08:27,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:08:27,559 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-10-20 06:08:27,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:08:27,571 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-20 06:08:27,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:08:27,580 INFO L225 Difference]: With dead ends: 20 [2021-10-20 06:08:27,580 INFO L226 Difference]: Without dead ends: 17 [2021-10-20 06:08:27,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:08:27,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-20 06:08:27,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-10-20 06:08:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 15 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) [2021-10-20 06:08:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-20 06:08:27,646 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2021-10-20 06:08:27,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:08:27,647 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-20 06:08:27,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:08:27,648 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-20 06:08:27,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-20 06:08:27,648 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:08:27,648 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-20 06:08:27,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-20 06:08:27,649 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-20 06:08:27,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:08:27,651 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-10-20 06:08:27,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:08:27,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265098880] [2021-10-20 06:08:27,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:08:27,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:08:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:08:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:08:27,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:08:27,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265098880] [2021-10-20 06:08:27,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265098880] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:08:27,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:08:27,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-20 06:08:27,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974126654] [2021-10-20 06:08:27,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-20 06:08:27,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:08:27,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-20 06:08:27,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-20 06:08:27,710 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-20 06:08:27,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:08:27,764 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-20 06:08:27,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-20 06:08:27,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 [2021-10-20 06:08:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:08:27,766 INFO L225 Difference]: With dead ends: 16 [2021-10-20 06:08:27,766 INFO L226 Difference]: Without dead ends: 13 [2021-10-20 06:08:27,767 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-20 06:08:27,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-20 06:08:27,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-20 06:08:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:08:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-20 06:08:27,771 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-10-20 06:08:27,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:08:27,771 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-20 06:08:27,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-20 06:08:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-20 06:08:27,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-20 06:08:27,773 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:08:27,773 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-20 06:08:27,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-20 06:08:27,774 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-20 06:08:27,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:08:27,775 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-10-20 06:08:27,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:08:27,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14844088] [2021-10-20 06:08:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:08:27,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:08:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:08:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:08:27,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:08:27,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14844088] [2021-10-20 06:08:27,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14844088] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:08:27,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-20 06:08:27,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-20 06:08:27,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583652955] [2021-10-20 06:08:27,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-20 06:08:27,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:08:27,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-20 06:08:27,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:08:27,806 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-10-20 06:08:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:08:27,833 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-10-20 06:08:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-20 06:08:27,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 [2021-10-20 06:08:27,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:08:27,835 INFO L225 Difference]: With dead ends: 20 [2021-10-20 06:08:27,835 INFO L226 Difference]: Without dead ends: 18 [2021-10-20 06:08:27,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-20 06:08:27,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-20 06:08:27,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-10-20 06:08:27,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2) internal successors, (18), 17 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) [2021-10-20 06:08:27,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-20 06:08:27,840 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 6 [2021-10-20 06:08:27,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:08:27,840 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-20 06:08:27,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-10-20 06:08:27,841 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-20 06:08:27,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-20 06:08:27,842 INFO L504 BasicCegarLoop]: Found error trace [2021-10-20 06:08:27,842 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-20 06:08:27,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-20 06:08:27,843 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-10-20 06:08:27,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-20 06:08:27,844 INFO L82 PathProgramCache]: Analyzing trace with hash 861171249, now seen corresponding path program 1 times [2021-10-20 06:08:27,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-20 06:08:27,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421768172] [2021-10-20 06:08:27,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:08:27,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-20 06:08:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:08:28,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:08:28,032 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-20 06:08:28,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421768172] [2021-10-20 06:08:28,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421768172] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-20 06:08:28,035 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23949969] [2021-10-20 06:08:28,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-20 06:08:28,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:08:28,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/z3 [2021-10-20 06:08:28,044 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-20 06:08:28,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-20 06:08:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-20 06:08:28,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-20 06:08:28,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-20 06:08:28,410 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:08:28,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-20 06:08:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-20 06:08:28,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23949969] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-20 06:08:28,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1638704864] [2021-10-20 06:08:29,007 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-20 06:08:29,008 INFO L166 IcfgInterpreter]: Building call graph [2021-10-20 06:08:29,016 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-20 06:08:29,022 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-20 06:08:29,023 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-20 06:08:29,070 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-20 06:08:29,073 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-20 06:08:29,079 INFO L180 QuantifierPusher]: treesize reduction 7, result has 78.8 percent of original size [2021-10-20 06:08:29,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 22 [2021-10-20 06:08:29,090 INFO L180 QuantifierPusher]: treesize reduction 8, result has 95.3 percent of original size [2021-10-20 06:08:29,094 INFO L185 QuantifierPusher]: treesize reduction 8, result has 60.0 percent of original size 12 [2021-10-20 06:08:29,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:08:29,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:08:29,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:08:29,165 INFO L180 QuantifierPusher]: treesize reduction 7, result has 85.7 percent of original size [2021-10-20 06:08:29,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-20 06:08:29,185 INFO L180 QuantifierPusher]: treesize reduction 3, result has 98.4 percent of original size [2021-10-20 06:08:29,212 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-20 06:08:29,221 INFO L180 QuantifierPusher]: treesize reduction 7, result has 85.7 percent of original size [2021-10-20 06:08:29,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 41 [2021-10-20 06:08:29,232 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-20 06:08:29,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1638704864] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-20 06:08:29,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-10-20 06:08:29,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3, 3] total 13 [2021-10-20 06:08:29,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33958328] [2021-10-20 06:08:29,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-20 06:08:29,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-20 06:08:29,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-20 06:08:29,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-10-20 06:08:29,446 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:08:29,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-20 06:08:29,486 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-10-20 06:08:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-20 06:08:29,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-20 06:08:29,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-20 06:08:29,488 INFO L225 Difference]: With dead ends: 18 [2021-10-20 06:08:29,488 INFO L226 Difference]: Without dead ends: 0 [2021-10-20 06:08:29,491 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 369.5ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-10-20 06:08:29,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-20 06:08:29,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-20 06:08:29,492 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) [2021-10-20 06:08:29,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-20 06:08:29,492 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-10-20 06:08:29,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-20 06:08:29,493 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-20 06:08:29,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-20 06:08:29,494 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-20 06:08:29,494 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-20 06:08:29,497 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 06:08:29,499 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 06:08:29,499 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 06:08:29,500 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 06:08:29,500 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 06:08:29,501 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-20 06:08:29,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-20 06:08:29,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-20 06:08:29,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-20 06:08:29,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-20 06:08:29,775 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-10-20 06:08:29,775 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-20 06:08:29,775 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2021-10-20 06:08:29,776 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2021-10-20 06:08:29,776 INFO L857 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-10-20 06:08:29,776 INFO L857 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-10-20 06:08:29,776 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2021-10-20 06:08:29,777 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2021-10-20 06:08:29,777 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-20 06:08:29,777 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 16) no Hoare annotation was computed. [2021-10-20 06:08:29,777 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-20 06:08:29,778 INFO L857 garLoopResultBuilder]: For program point L16-1(line 16) no Hoare annotation was computed. [2021-10-20 06:08:29,778 INFO L857 garLoopResultBuilder]: For program point L16-2(line 16) no Hoare annotation was computed. [2021-10-20 06:08:29,778 INFO L857 garLoopResultBuilder]: For program point L16-3(line 16) no Hoare annotation was computed. [2021-10-20 06:08:29,779 INFO L853 garLoopResultBuilder]: At program point L14-2(lines 14 17) the Hoare annotation is: (and (or (and (<= ULTIMATE.start_main_~x~0 2147483645) (= ULTIMATE.start_main_~y~0 1) (<= 0 (+ ULTIMATE.start_main_~x~0 2))) (= ULTIMATE.start_main_~y~0 2)) (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2021-10-20 06:08:29,784 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-20 06:08:29,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:08:29 BoogieIcfgContainer [2021-10-20 06:08:29,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-20 06:08:29,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-20 06:08:29,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-20 06:08:29,800 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-20 06:08:29,801 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:08:27" (3/4) ... [2021-10-20 06:08:29,809 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-20 06:08:29,819 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-10-20 06:08:29,819 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-20 06:08:29,820 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-20 06:08:29,862 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/witness.graphml [2021-10-20 06:08:29,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-20 06:08:29,864 INFO L168 Benchmark]: Toolchain (without parser) took 3467.09 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 55.4 MB in the beginning and 58.1 MB in the end (delta: -2.6 MB). Peak memory consumption was 30.7 MB. Max. memory is 16.1 GB. [2021-10-20 06:08:29,864 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 90.2 MB. Free memory was 59.9 MB in the beginning and 59.9 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:08:29,865 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.02 ms. Allocated memory is still 90.2 MB. Free memory was 55.3 MB in the beginning and 68.2 MB in the end (delta: -12.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-20 06:08:29,866 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.75 ms. Allocated memory is still 90.2 MB. Free memory was 68.2 MB in the beginning and 67.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-20 06:08:29,866 INFO L168 Benchmark]: Boogie Preprocessor took 36.32 ms. Allocated memory is still 90.2 MB. Free memory was 67.0 MB in the beginning and 65.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:08:29,867 INFO L168 Benchmark]: RCFGBuilder took 354.91 ms. Allocated memory is still 90.2 MB. Free memory was 65.9 MB in the beginning and 57.2 MB in the end (delta: 8.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-20 06:08:29,867 INFO L168 Benchmark]: TraceAbstraction took 2709.89 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 56.6 MB in the beginning and 60.2 MB in the end (delta: -3.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. [2021-10-20 06:08:29,868 INFO L168 Benchmark]: Witness Printer took 62.99 ms. Allocated memory is still 127.9 MB. Free memory was 60.2 MB in the beginning and 58.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-20 06:08:29,871 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 90.2 MB. Free memory was 59.9 MB in the beginning and 59.9 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 222.02 ms. Allocated memory is still 90.2 MB. Free memory was 55.3 MB in the beginning and 68.2 MB in the end (delta: -12.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.75 ms. Allocated memory is still 90.2 MB. Free memory was 68.2 MB in the beginning and 67.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.32 ms. Allocated memory is still 90.2 MB. Free memory was 67.0 MB in the beginning and 65.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 354.91 ms. Allocated memory is still 90.2 MB. Free memory was 65.9 MB in the beginning and 57.2 MB in the end (delta: 8.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2709.89 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 56.6 MB in the beginning and 60.2 MB in the end (delta: -3.5 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. * Witness Printer took 62.99 ms. Allocated memory is still 127.9 MB. Free memory was 60.2 MB in the beginning and 58.1 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 16]: 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, 15 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 2629.0ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 10.5ms, AutomataDifference: 306.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 58.4ms, InitialAbstractionConstructionTime: 21.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 19 SDslu, 1 SDs, 0 SdLazy, 67 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 136.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 422.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=3, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 47.0ms AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 25 HoareAnnotationTreeSize, 1 FomulaSimplifications, 37 FormulaSimplificationTreeSizeReduction, 13.6ms HoareSimplificationTime, 1 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 37.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 9.8ms SsaConstructionTime, 58.1ms SatisfiabilityAnalysisTime, 1196.2ms InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 458 SizeOfPredicates, 0 NumberOfNonLiveVariables, 21 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 0/6 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[ms]: 226, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 7, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 22, TOOLS_POST_TIME[ms]: 84, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 22, TOOLS_QUANTIFIERELIM_TIME[ms]: 75, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 40, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 37, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 65, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 4, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME[ms]: 7, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 141, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 141, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 12, PATH_EXPR_TIME[ms]: 6, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 9, DAG_COMPRESSION_PROCESSED_NODES: 62, DAG_COMPRESSION_RETAINED_NODES: 30, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((x <= 2147483645 && y == 1) && 0 <= x + 2) || y == 2) && x <= 2147483647) && 0 <= x + 2147483648 RESULT: Ultimate proved your program to be correct! [2021-10-20 06:08:29,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5eb7eb1-f466-40e8-8778-c70fd4cd3498/bin/utaipan-tZwUujhuQw/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...