./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH --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 20745b6559a0027241fed3a5cbed63a985f3358ae9d5e4871ad5e64eb23bcb25 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 04:23:07,470 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 04:23:07,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 04:23:07,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 04:23:07,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 04:23:07,535 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 04:23:07,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 04:23:07,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 04:23:07,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 04:23:07,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 04:23:07,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 04:23:07,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 04:23:07,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 04:23:07,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 04:23:07,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 04:23:07,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 04:23:07,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 04:23:07,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 04:23:07,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 04:23:07,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 04:23:07,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 04:23:07,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 04:23:07,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 04:23:07,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 04:23:07,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 04:23:07,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 04:23:07,594 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 04:23:07,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 04:23:07,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 04:23:07,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 04:23:07,599 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 04:23:07,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 04:23:07,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 04:23:07,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 04:23:07,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 04:23:07,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 04:23:07,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 04:23:07,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 04:23:07,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 04:23:07,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 04:23:07,608 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 04:23:07,609 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-03 04:23:07,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 04:23:07,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 04:23:07,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 04:23:07,665 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 04:23:07,665 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 04:23:07,665 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 04:23:07,665 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 04:23:07,666 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 04:23:07,666 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 04:23:07,666 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 04:23:07,667 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 04:23:07,667 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 04:23:07,668 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 04:23:07,668 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 04:23:07,668 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 04:23:07,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 04:23:07,669 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 04:23:07,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 04:23:07,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 04:23:07,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 04:23:07,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 04:23:07,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 04:23:07,671 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-03 04:23:07,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 04:23:07,671 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 04:23:07,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 04:23:07,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 04:23:07,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 04:23:07,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:23:07,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 04:23:07,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 04:23:07,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 04:23:07,675 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 04:23:07,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 04:23:07,675 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 04:23:07,676 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 04:23:07,676 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 04:23:07,676 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_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20745b6559a0027241fed3a5cbed63a985f3358ae9d5e4871ad5e64eb23bcb25 [2021-11-03 04:23:07,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 04:23:07,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 04:23:07,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 04:23:07,954 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 04:23:07,955 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 04:23:07,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c [2021-11-03 04:23:08,016 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/data/f17779a62/c858a03fda764c71af208e0893d25720/FLAG8acaba54b [2021-11-03 04:23:08,517 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 04:23:08,518 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/sv-benchmarks/c/termination-crafted-lit/HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c [2021-11-03 04:23:08,530 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/data/f17779a62/c858a03fda764c71af208e0893d25720/FLAG8acaba54b [2021-11-03 04:23:08,892 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/data/f17779a62/c858a03fda764c71af208e0893d25720 [2021-11-03 04:23:08,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 04:23:08,896 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 04:23:08,902 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 04:23:08,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 04:23:08,905 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 04:23:08,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:23:08" (1/1) ... [2021-11-03 04:23:08,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5350d0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:08, skipping insertion in model container [2021-11-03 04:23:08,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:23:08" (1/1) ... [2021-11-03 04:23:08,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 04:23:08,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 04:23:09,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:23:09,083 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 04:23:09,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 04:23:09,114 INFO L208 MainTranslator]: Completed translation [2021-11-03 04:23:09,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:09 WrapperNode [2021-11-03 04:23:09,114 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 04:23:09,115 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 04:23:09,115 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 04:23:09,115 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 04:23:09,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:09" (1/1) ... [2021-11-03 04:23:09,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:09" (1/1) ... [2021-11-03 04:23:09,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 04:23:09,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 04:23:09,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 04:23:09,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 04:23:09,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:09" (1/1) ... [2021-11-03 04:23:09,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:09" (1/1) ... [2021-11-03 04:23:09,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:09" (1/1) ... [2021-11-03 04:23:09,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:09" (1/1) ... [2021-11-03 04:23:09,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:09" (1/1) ... [2021-11-03 04:23:09,194 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:09" (1/1) ... [2021-11-03 04:23:09,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:09" (1/1) ... [2021-11-03 04:23:09,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 04:23:09,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 04:23:09,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 04:23:09,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 04:23:09,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:09" (1/1) ... [2021-11-03 04:23:09,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 04:23:09,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:23:09,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 04:23:09,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 04:23:09,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 04:23:09,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 04:23:09,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 04:23:09,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 04:23:09,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 04:23:09,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:23:09,605 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:23:09,605 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-03 04:23:09,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:23:09 BoogieIcfgContainer [2021-11-03 04:23:09,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:23:09,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:23:09,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:23:09,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:23:09,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:23:08" (1/3) ... [2021-11-03 04:23:09,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306b25d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:23:09, skipping insertion in model container [2021-11-03 04:23:09,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:23:09" (2/3) ... [2021-11-03 04:23:09,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@306b25d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:23:09, skipping insertion in model container [2021-11-03 04:23:09,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:23:09" (3/3) ... [2021-11-03 04:23:09,624 INFO L111 eAbstractionObserver]: Analyzing ICFG HeizmannHoenickeLeikePodelski-ATVA2013-Fig7.c [2021-11-03 04:23:09,629 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:23:09,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-03 04:23:09,701 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:23:09,720 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 [2021-11-03 04:23:09,720 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-03 04:23:09,735 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 19 states have internal predecessors, (23), 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) [2021-11-03 04:23:09,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-03 04:23:09,740 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:09,741 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-03 04:23:09,742 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)] === [2021-11-03 04:23:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:09,747 INFO L85 PathProgramCache]: Analyzing trace with hash 2600267, now seen corresponding path program 1 times [2021-11-03 04:23:09,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:09,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374715878] [2021-11-03 04:23:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:09,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:09,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:09,919 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:09,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374715878] [2021-11-03 04:23:09,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374715878] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:09,921 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:09,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:23:09,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789452458] [2021-11-03 04:23:09,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 04:23:09,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 04:23:09,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 04:23:09,944 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 19 states have internal predecessors, (23), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2021-11-03 04:23:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:09,996 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2021-11-03 04:23:09,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 04:23:09,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2021-11-03 04:23:09,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:10,006 INFO L225 Difference]: With dead ends: 38 [2021-11-03 04:23:10,006 INFO L226 Difference]: Without dead ends: 30 [2021-11-03 04:23:10,009 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 04:23:10,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-03 04:23:10,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2021-11-03 04:23:10,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-11-03 04:23:10,041 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2021-11-03 04:23:10,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:10,042 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-03 04:23:10,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2021-11-03 04:23:10,042 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-11-03 04:23:10,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 04:23:10,043 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:10,043 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 04:23:10,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 04:23:10,044 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:23:10,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:10,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1795945129, now seen corresponding path program 1 times [2021-11-03 04:23:10,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:10,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381460284] [2021-11-03 04:23:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:10,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:10,146 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:10,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381460284] [2021-11-03 04:23:10,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381460284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:10,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:10,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 04:23:10,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752880926] [2021-11-03 04:23:10,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:23:10,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:10,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:23:10,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:23:10,157 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 3 states have (on average 2.0) 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) [2021-11-03 04:23:10,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:10,178 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-11-03 04:23:10,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:23:10,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 [2021-11-03 04:23:10,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:10,179 INFO L225 Difference]: With dead ends: 30 [2021-11-03 04:23:10,179 INFO L226 Difference]: Without dead ends: 20 [2021-11-03 04:23:10,180 INFO L786 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 [2021-11-03 04:23:10,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-03 04:23:10,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-03 04:23:10,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5) internal successors, (21), 19 states have internal predecessors, (21), 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) [2021-11-03 04:23:10,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-11-03 04:23:10,184 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2021-11-03 04:23:10,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:10,185 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-11-03 04:23:10,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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) [2021-11-03 04:23:10,185 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-11-03 04:23:10,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-03 04:23:10,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:10,186 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-11-03 04:23:10,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 04:23:10,186 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:23:10,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:10,187 INFO L85 PathProgramCache]: Analyzing trace with hash 155194564, now seen corresponding path program 1 times [2021-11-03 04:23:10,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:10,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210992681] [2021-11-03 04:23:10,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:10,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:10,289 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:10,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210992681] [2021-11-03 04:23:10,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210992681] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:23:10,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227855507] [2021-11-03 04:23:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:10,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:23:10,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:23:10,303 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:23:10,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 04:23:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:10,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:23:10,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:10,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:10,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:10,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227855507] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 04:23:10,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [624650908] [2021-11-03 04:23:10,566 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-11-03 04:23:10,566 INFO L166 IcfgInterpreter]: Building call graph [2021-11-03 04:23:10,571 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-03 04:23:10,577 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-03 04:23:10,578 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-03 04:23:10,618 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,623 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:10,624 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 6 [2021-11-03 04:23:10,626 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 04:23:10,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-03 04:23:10,662 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,664 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-11-03 04:23:10,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-11-03 04:23:10,666 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:23:10,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:10,686 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,687 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-11-03 04:23:10,689 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:23:10,689 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:23 [2021-11-03 04:23:10,695 INFO L180 QuantifierPusher]: treesize reduction 6, result has 90.0 percent of original size [2021-11-03 04:23:10,699 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:10,700 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-11-03 04:23:10,701 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:10,702 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-11-03 04:23:10,704 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-03 04:23:10,709 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_4|], 3=[|v_#valid_13|]} [2021-11-03 04:23:10,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-03 04:23:10,715 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:23:10,716 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,716 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-03 04:23:10,716 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:23:10,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:10,727 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-11-03 04:23:10,735 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:23:10,742 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,744 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:23:10,744 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:23:10,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:10,765 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,767 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 46 [2021-11-03 04:23:10,773 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:23:10,774 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:53, output treesize:46 [2021-11-03 04:23:10,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,795 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:10,796 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,797 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:10,797 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:23:10,798 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:23:10,799 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:10,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-03 04:23:10,803 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-03 04:23:10,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-03 04:23:10,821 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,822 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:23:10,822 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,824 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:23:10,825 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:23:10,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:10,848 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,858 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-11-03 04:23:10,858 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:23:10,859 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:75, output treesize:76 [2021-11-03 04:23:10,867 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,876 INFO L185 QuantifierPusher]: treesize reduction 3, result has 95.4 percent of original size 62 [2021-11-03 04:23:10,891 INFO L180 QuantifierPusher]: treesize reduction 3, result has 96.8 percent of original size [2021-11-03 04:23:10,895 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:10,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,897 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:10,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:23:10,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:23:10,909 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:10,910 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,911 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:10,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,913 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-03 04:23:10,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 04:23:10,914 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:10,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,916 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 04:23:10,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 93 [2021-11-03 04:23:10,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:23:10,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-03 04:23:10,930 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,933 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:23:10,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:23:10,935 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:23:10,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:10,946 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,948 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:10,951 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 92 [2021-11-03 04:23:10,952 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:23:10,952 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:91, output treesize:92 [2021-11-03 04:23:10,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:10,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,048 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.7 percent of original size [2021-11-03 04:23:11,092 INFO L185 QuantifierPusher]: treesize reduction 12, result has 93.5 percent of original size 173 [2021-11-03 04:23:11,108 INFO L180 QuantifierPusher]: treesize reduction 12, result has 94.4 percent of original size [2021-11-03 04:23:11,116 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,123 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,137 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,142 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,144 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,147 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-03 04:23:11,151 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:23:11,159 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 179 [2021-11-03 04:23:11,161 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 161 [2021-11-03 04:23:11,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 162 [2021-11-03 04:23:11,176 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,182 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-03 04:23:11,186 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 04:23:11,192 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,204 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,207 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,208 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,208 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-11-03 04:23:11,209 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-03 04:23:11,210 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,210 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,214 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,214 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,215 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-03 04:23:11,216 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 04:23:11,216 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-03 04:23:11,222 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,224 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,227 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,228 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,231 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-03 04:23:11,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 04:23:11,233 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,236 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,238 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,238 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 52 [2021-11-03 04:23:11,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 53 [2021-11-03 04:23:11,242 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,243 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 60 [2021-11-03 04:23:11,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 195 [2021-11-03 04:23:11,251 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 169 [2021-11-03 04:23:11,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 204 [2021-11-03 04:23:11,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:23:11,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:23:11,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:23:11,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 44 [2021-11-03 04:23:11,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,320 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 04:23:11,323 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-11-03 04:23:11,325 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:23:11,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:23:11,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2021-11-03 04:23:11,345 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,350 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:23:11,353 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-11-03 04:23:11,356 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:23:11,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,395 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,410 INFO L180 QuantifierPusher]: treesize reduction 48, result has 80.8 percent of original size [2021-11-03 04:23:11,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-11-03 04:23:11,421 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 04:23:11,421 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:257, output treesize:211 [2021-11-03 04:23:11,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,488 INFO L180 QuantifierPusher]: treesize reduction 23, result has 59.6 percent of original size [2021-11-03 04:23:11,491 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 04:23:11,496 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,499 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,502 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,503 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,503 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,504 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:23:11,506 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:23:11,506 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,507 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,508 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-03 04:23:11,509 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 56 [2021-11-03 04:23:11,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-03 04:23:11,522 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,522 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:23:11,523 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,523 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:23:11,524 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:23:11,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,527 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,528 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,532 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-11-03 04:23:11,532 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-11-03 04:23:11,532 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:54, output treesize:55 [2021-11-03 04:23:11,538 INFO L180 QuantifierPusher]: treesize reduction 23, result has 59.6 percent of original size [2021-11-03 04:23:11,541 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-11-03 04:23:11,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,612 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,618 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,619 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,623 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,624 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-03 04:23:11,625 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-03 04:23:11,625 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-03 04:23:11,628 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,629 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-03 04:23:11,634 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 158 [2021-11-03 04:23:11,656 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 04:23:11,659 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:23:11,660 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,660 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:23:11,660 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-03 04:23:11,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-03 04:23:11,672 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,672 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:23:11,673 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,673 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:23:11,673 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-03 04:23:11,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-03 04:23:11,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,684 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:23:11,685 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-11-03 04:23:11,685 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-11-03 04:23:11,693 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-03 04:23:11,693 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,694 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:23:11,694 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,695 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-03 04:23:11,695 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-11-03 04:23:11,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,706 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:23:11,712 INFO L180 QuantifierPusher]: treesize reduction 45, result has 73.7 percent of original size [2021-11-03 04:23:11,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 135 [2021-11-03 04:23:11,716 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2021-11-03 04:23:11,716 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:358, output treesize:135 [2021-11-03 04:23:11,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-03 04:23:11,745 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-03 04:23:12,211 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 04:23:12,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-03 04:23:12,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2021-11-03 04:23:12,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678225753] [2021-11-03 04:23:12,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:23:12,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:12,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:23:12,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-11-03 04:23:12,214 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 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) [2021-11-03 04:23:12,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:12,403 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2021-11-03 04:23:12,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-03 04:23:12,404 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 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) Word has length 7 [2021-11-03 04:23:12,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:12,405 INFO L225 Difference]: With dead ends: 63 [2021-11-03 04:23:12,405 INFO L226 Difference]: Without dead ends: 62 [2021-11-03 04:23:12,406 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2021-11-03 04:23:12,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-03 04:23:12,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 28. [2021-11-03 04:23:12,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 27 states have internal predecessors, (34), 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) [2021-11-03 04:23:12,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-11-03 04:23:12,411 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 7 [2021-11-03 04:23:12,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:12,411 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-11-03 04:23:12,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 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) [2021-11-03 04:23:12,411 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-11-03 04:23:12,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-03 04:23:12,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:12,412 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2021-11-03 04:23:12,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:12,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:23:12,638 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:23:12,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:12,639 INFO L85 PathProgramCache]: Analyzing trace with hash 516064239, now seen corresponding path program 1 times [2021-11-03 04:23:12,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:12,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084536453] [2021-11-03 04:23:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:12,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:12,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:12,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084536453] [2021-11-03 04:23:12,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084536453] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-03 04:23:12,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384244288] [2021-11-03 04:23:12,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:12,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:23:12,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 04:23:12,694 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 04:23:12,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 04:23:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:12,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 04:23:12,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:23:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:12,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:23:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:23:12,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384244288] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:12,861 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-03 04:23:12,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 11 [2021-11-03 04:23:12,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346111251] [2021-11-03 04:23:12,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:23:12,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:12,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:23:12,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:23:12,863 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 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) [2021-11-03 04:23:12,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:12,898 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2021-11-03 04:23:12,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:23:12,899 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-03 04:23:12,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:12,901 INFO L225 Difference]: With dead ends: 28 [2021-11-03 04:23:12,901 INFO L226 Difference]: Without dead ends: 27 [2021-11-03 04:23:12,901 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:23:12,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-03 04:23:12,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-11-03 04:23:12,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 26 states have internal predecessors, (31), 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) [2021-11-03 04:23:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-11-03 04:23:12,906 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 8 [2021-11-03 04:23:12,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:12,906 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-11-03 04:23:12,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 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) [2021-11-03 04:23:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-11-03 04:23:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 04:23:12,907 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:12,907 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:12,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:23:13,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 04:23:13,130 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:23:13,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:13,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1181713776, now seen corresponding path program 1 times [2021-11-03 04:23:13,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:13,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709949538] [2021-11-03 04:23:13,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:13,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:23:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 04:23:13,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 04:23:13,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709949538] [2021-11-03 04:23:13,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709949538] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 04:23:13,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:23:13,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 04:23:13,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126600555] [2021-11-03 04:23:13,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:23:13,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 04:23:13,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:23:13,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:23:13,179 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:23:13,204 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2021-11-03 04:23:13,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:23:13,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-03 04:23:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:23:13,205 INFO L225 Difference]: With dead ends: 37 [2021-11-03 04:23:13,205 INFO L226 Difference]: Without dead ends: 35 [2021-11-03 04:23:13,205 INFO L786 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 [2021-11-03 04:23:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-03 04:23:13,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2021-11-03 04:23:13,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 30 states have internal predecessors, (35), 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) [2021-11-03 04:23:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-03 04:23:13,213 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 9 [2021-11-03 04:23:13,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:23:13,214 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-03 04:23:13,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:23:13,214 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-03 04:23:13,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 04:23:13,215 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:23:13,215 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:23:13,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-03 04:23:13,216 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-03 04:23:13,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:23:13,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1755570254, now seen corresponding path program 1 times [2021-11-03 04:23:13,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 04:23:13,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846779557] [2021-11-03 04:23:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:23:13,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 04:23:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:23:13,250 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 04:23:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 04:23:13,289 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 04:23:13,289 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 04:23:13,290 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:23:13,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:23:13,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:23:13,292 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:23:13,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:23:13,293 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-11-03 04:23:13,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-03 04:23:13,297 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-03 04:23:13,300 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 04:23:13,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:23:13 BoogieIcfgContainer [2021-11-03 04:23:13,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 04:23:13,322 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 04:23:13,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 04:23:13,323 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 04:23:13,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:23:09" (3/4) ... [2021-11-03 04:23:13,325 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-03 04:23:13,356 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/witness.graphml [2021-11-03 04:23:13,356 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 04:23:13,357 INFO L168 Benchmark]: Toolchain (without parser) took 4460.61 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 81.5 MB in the beginning and 75.6 MB in the end (delta: 5.9 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2021-11-03 04:23:13,358 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory was 64.2 MB in the beginning and 64.2 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:23:13,358 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.38 ms. Allocated memory is still 109.1 MB. Free memory was 81.2 MB in the beginning and 86.3 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-03 04:23:13,358 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.05 ms. Allocated memory is still 109.1 MB. Free memory was 86.3 MB in the beginning and 84.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:23:13,358 INFO L168 Benchmark]: Boogie Preprocessor took 36.19 ms. Allocated memory is still 109.1 MB. Free memory was 84.8 MB in the beginning and 83.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 04:23:13,359 INFO L168 Benchmark]: RCFGBuilder took 409.06 ms. Allocated memory is still 109.1 MB. Free memory was 83.6 MB in the beginning and 73.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-03 04:23:13,359 INFO L168 Benchmark]: TraceAbstraction took 3711.97 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 72.4 MB in the beginning and 76.6 MB in the end (delta: -4.2 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2021-11-03 04:23:13,359 INFO L168 Benchmark]: Witness Printer took 34.08 ms. Allocated memory is still 132.1 MB. Free memory was 76.6 MB in the beginning and 75.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 04:23:13,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 109.1 MB. Free memory was 64.2 MB in the beginning and 64.2 MB in the end (delta: 56.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 212.38 ms. Allocated memory is still 109.1 MB. Free memory was 81.2 MB in the beginning and 86.3 MB in the end (delta: -5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.05 ms. Allocated memory is still 109.1 MB. Free memory was 86.3 MB in the beginning and 84.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.19 ms. Allocated memory is still 109.1 MB. Free memory was 84.8 MB in the beginning and 83.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 409.06 ms. Allocated memory is still 109.1 MB. Free memory was 83.6 MB in the beginning and 73.0 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3711.97 ms. Allocated memory was 109.1 MB in the beginning and 132.1 MB in the end (delta: 23.1 MB). Free memory was 72.4 MB in the beginning and 76.6 MB in the end (delta: -4.2 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * Witness Printer took 34.08 ms. Allocated memory is still 132.1 MB. Free memory was 76.6 MB in the beginning and 75.6 MB in the end (delta: 1.0 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 26]: integer overflow possible integer overflow possible We found a FailurePath: [L12] int a_length = __VERIFIER_nondet_int(); [L13] COND FALSE !(a_length < 1) [L16] int a[a_length]; [L17] int j = 0; [L17] COND TRUE j < a_length [L18] a[j] = __VERIFIER_nondet_int() [L17] j++ [L17] COND FALSE !(j < a_length) [L20] int offset = 1; [L21] int i = 0; [L22] COND TRUE i < a_length [L23] EXPR a[i] [L23] COND FALSE !(a[i] < 0) [L26] EXPR i + offset [L26] EXPR a[i] [L26] i + offset + a[i] - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 3.5s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 167 SDslu, 150 SDs, 0 SdLazy, 106 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=5, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 48 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 161 SizeOfPredicates, 4 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 7/16 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-03 04:23:13,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4551d44f-89af-474a-a9ba-2de48c252dbe/bin/utaipan-aC7eJsxGYH/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)