./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE --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 086de8df2449d866ff611c83674a9697b7d09f2a2b1c5c922e46b0c1131a7d5c .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:48:00,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:48:00,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:48:00,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:48:00,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:48:00,728 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:48:00,730 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:48:00,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:48:00,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:48:00,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:48:00,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:48:00,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:48:00,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:48:00,748 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:48:00,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:48:00,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:48:00,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:48:00,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:48:00,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:48:00,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:48:00,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:48:00,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:48:00,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:48:00,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:48:00,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:48:00,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:48:00,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:48:00,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:48:00,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:48:00,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:48:00,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:48:00,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:48:00,794 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:48:00,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:48:00,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:48:00,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:48:00,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:48:00,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:48:00,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:48:00,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:48:00,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:48:00,801 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-10-24 09:48:00,842 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:48:00,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:48:00,844 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:48:00,844 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:48:00,845 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:48:00,845 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:48:00,845 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:48:00,845 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:48:00,845 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:48:00,846 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:48:00,847 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:48:00,847 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:48:00,847 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:48:00,848 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:48:00,848 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:48:00,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:48:00,849 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-24 09:48:00,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:48:00,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:48:00,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:48:00,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:48:00,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:48:00,850 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-24 09:48:00,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:48:00,851 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:48:00,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:48:00,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:48:00,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:48:00,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:48:00,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:48:00,854 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:48:00,854 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:48:00,854 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:48:00,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:48:00,855 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:48:00,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:48:00,855 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:48:00,855 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_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 086de8df2449d866ff611c83674a9697b7d09f2a2b1c5c922e46b0c1131a7d5c [2021-10-24 09:48:01,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:48:01,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:48:01,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:48:01,217 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:48:01,218 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:48:01,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2021-10-24 09:48:01,324 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/data/d5add4869/f20b402514534adfbe057134e07b4bdc/FLAGba140033c [2021-10-24 09:48:01,742 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:48:01,743 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2021-10-24 09:48:01,749 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/data/d5add4869/f20b402514534adfbe057134e07b4bdc/FLAGba140033c [2021-10-24 09:48:02,143 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/data/d5add4869/f20b402514534adfbe057134e07b4bdc [2021-10-24 09:48:02,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:48:02,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:48:02,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:48:02,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:48:02,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:48:02,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:48:02" (1/1) ... [2021-10-24 09:48:02,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d833a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:02, skipping insertion in model container [2021-10-24 09:48:02,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:48:02" (1/1) ... [2021-10-24 09:48:02,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:48:02,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:48:02,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:48:02,378 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:48:02,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:48:02,409 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:48:02,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:02 WrapperNode [2021-10-24 09:48:02,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:48:02,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:48:02,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:48:02,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:48:02,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:02" (1/1) ... [2021-10-24 09:48:02,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:02" (1/1) ... [2021-10-24 09:48:02,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:48:02,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:48:02,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:48:02,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:48:02,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:02" (1/1) ... [2021-10-24 09:48:02,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:02" (1/1) ... [2021-10-24 09:48:02,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:02" (1/1) ... [2021-10-24 09:48:02,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:02" (1/1) ... [2021-10-24 09:48:02,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:02" (1/1) ... [2021-10-24 09:48:02,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:02" (1/1) ... [2021-10-24 09:48:02,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:02" (1/1) ... [2021-10-24 09:48:02,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:48:02,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:48:02,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:48:02,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:48:02,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:02" (1/1) ... [2021-10-24 09:48:02,485 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:48:02,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:48:02,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:48:02,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:48:02,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:48:02,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:48:02,756 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:48:02,756 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-24 09:48:02,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:48:02 BoogieIcfgContainer [2021-10-24 09:48:02,758 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:48:02,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:48:02,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:48:02,765 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:48:02,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:48:02" (1/3) ... [2021-10-24 09:48:02,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124b7b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:48:02, skipping insertion in model container [2021-10-24 09:48:02,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:48:02" (2/3) ... [2021-10-24 09:48:02,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124b7b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:48:02, skipping insertion in model container [2021-10-24 09:48:02,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:48:02" (3/3) ... [2021-10-24 09:48:02,769 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-speedpldi2.c [2021-10-24 09:48:02,776 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:48:02,776 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-24 09:48:02,834 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:48:02,843 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 09:48:02,843 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-24 09:48:02,861 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:02,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 09:48:02,866 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:02,867 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 09:48:02,868 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:48:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:02,875 INFO L82 PathProgramCache]: Analyzing trace with hash 29684842, now seen corresponding path program 1 times [2021-10-24 09:48:02,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:02,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615843773] [2021-10-24 09:48:02,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:02,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:03,065 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:03,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615843773] [2021-10-24 09:48:03,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615843773] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:48:03,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:48:03,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:48:03,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364980974] [2021-10-24 09:48:03,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:48:03,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:03,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:48:03,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:48:03,094 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:03,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:03,140 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-10-24 09:48:03,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:48:03,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-24 09:48:03,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:03,154 INFO L225 Difference]: With dead ends: 21 [2021-10-24 09:48:03,154 INFO L226 Difference]: Without dead ends: 16 [2021-10-24 09:48:03,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:48:03,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-24 09:48:03,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-10-24 09:48:03,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:03,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-24 09:48:03,254 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 5 [2021-10-24 09:48:03,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:03,254 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-24 09:48:03,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:03,255 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-10-24 09:48:03,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 09:48:03,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:03,256 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 09:48:03,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:48:03,257 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:48:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:03,258 INFO L82 PathProgramCache]: Analyzing trace with hash 920230152, now seen corresponding path program 1 times [2021-10-24 09:48:03,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:03,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374212872] [2021-10-24 09:48:03,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:03,260 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:03,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:03,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374212872] [2021-10-24 09:48:03,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374212872] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:48:03,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:48:03,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:48:03,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809853207] [2021-10-24 09:48:03,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:48:03,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:03,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:48:03,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:48:03,302 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:03,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:03,319 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-10-24 09:48:03,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:48:03,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 09:48:03,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:03,321 INFO L225 Difference]: With dead ends: 15 [2021-10-24 09:48:03,322 INFO L226 Difference]: Without dead ends: 14 [2021-10-24 09:48:03,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:48:03,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-24 09:48:03,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-24 09:48:03,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:03,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-24 09:48:03,328 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 6 [2021-10-24 09:48:03,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:03,328 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-24 09:48:03,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:03,329 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-10-24 09:48:03,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 09:48:03,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:03,330 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:03,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:48:03,331 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:48:03,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:03,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1537636308, now seen corresponding path program 1 times [2021-10-24 09:48:03,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:03,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236067979] [2021-10-24 09:48:03,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:03,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:03,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:03,384 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:03,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236067979] [2021-10-24 09:48:03,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236067979] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:48:03,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:48:03,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:48:03,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659064911] [2021-10-24 09:48:03,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:48:03,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:03,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:48:03,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:48:03,389 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:03,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:03,439 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2021-10-24 09:48:03,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:48:03,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-24 09:48:03,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:03,442 INFO L225 Difference]: With dead ends: 14 [2021-10-24 09:48:03,442 INFO L226 Difference]: Without dead ends: 13 [2021-10-24 09:48:03,443 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-24 09:48:03,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-24 09:48:03,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-24 09:48:03,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:03,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-10-24 09:48:03,448 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2021-10-24 09:48:03,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:03,448 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-10-24 09:48:03,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:03,449 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-10-24 09:48:03,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 09:48:03,449 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:03,449 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:03,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-24 09:48:03,450 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:48:03,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:03,451 INFO L82 PathProgramCache]: Analyzing trace with hash -422085238, now seen corresponding path program 1 times [2021-10-24 09:48:03,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:03,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575628093] [2021-10-24 09:48:03,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:03,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:03,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:03,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575628093] [2021-10-24 09:48:03,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575628093] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:48:03,498 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:48:03,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:48:03,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123540195] [2021-10-24 09:48:03,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 09:48:03,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:03,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 09:48:03,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:48:03,503 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:03,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:03,520 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2021-10-24 09:48:03,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 09:48:03,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 09:48:03,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:03,523 INFO L225 Difference]: With dead ends: 14 [2021-10-24 09:48:03,524 INFO L226 Difference]: Without dead ends: 13 [2021-10-24 09:48:03,525 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 09:48:03,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-24 09:48:03,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-24 09:48:03,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:03,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-10-24 09:48:03,529 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 8 [2021-10-24 09:48:03,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:03,529 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-10-24 09:48:03,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:03,530 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-10-24 09:48:03,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:48:03,533 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:03,534 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:48:03,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-24 09:48:03,534 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:48:03,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:03,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1322960227, now seen corresponding path program 1 times [2021-10-24 09:48:03,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:03,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666725794] [2021-10-24 09:48:03,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:03,536 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:03,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:03,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:03,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666725794] [2021-10-24 09:48:03,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666725794] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:48:03,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454727969] [2021-10-24 09:48:03,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:03,576 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:48:03,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:48:03,578 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:48:03,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 09:48:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:03,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:48:03,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:48:03,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:03,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:48:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:48:03,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454727969] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:48:03,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [509557140] [2021-10-24 09:48:03,826 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-24 09:48:03,827 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:48:03,832 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:48:03,839 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:48:03,840 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:48:03,906 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:03,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-24 09:48:03,938 INFO L180 QuantifierPusher]: treesize reduction 18, result has 63.3 percent of original size [2021-10-24 09:48:03,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-24 09:48:03,962 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.7 percent of original size [2021-10-24 09:48:03,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-24 09:48:03,984 INFO L180 QuantifierPusher]: treesize reduction 18, result has 66.7 percent of original size [2021-10-24 09:48:03,992 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-10-24 09:48:03,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,043 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,086 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,128 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.3 percent of original size [2021-10-24 09:48:04,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-10-24 09:48:04,153 INFO L180 QuantifierPusher]: treesize reduction 10, result has 90.4 percent of original size [2021-10-24 09:48:04,168 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-10-24 09:48:04,180 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,211 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,228 INFO L180 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size [2021-10-24 09:48:04,234 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-24 09:48:04,240 INFO L180 QuantifierPusher]: treesize reduction 10, result has 77.3 percent of original size [2021-10-24 09:48:04,243 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-24 09:48:04,249 INFO L180 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size [2021-10-24 09:48:04,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-24 09:48:04,253 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,269 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,312 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,328 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,364 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:04,390 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.7 percent of original size [2021-10-24 09:48:04,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-10-24 09:48:04,413 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:48:05,022 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:48:05,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 09:48:05,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-10-24 09:48:05,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763134256] [2021-10-24 09:48:05,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:48:05,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:05,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:48:05,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-24 09:48:05,025 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) [2021-10-24 09:48:05,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:05,072 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2021-10-24 09:48:05,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:48:05,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) Word has length 11 [2021-10-24 09:48:05,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:05,074 INFO L225 Difference]: With dead ends: 31 [2021-10-24 09:48:05,074 INFO L226 Difference]: Without dead ends: 30 [2021-10-24 09:48:05,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 620.4ms TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-24 09:48:05,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-24 09:48:05,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-24 09:48:05,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 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) [2021-10-24 09:48:05,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2021-10-24 09:48:05,081 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 11 [2021-10-24 09:48:05,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:05,081 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2021-10-24 09:48:05,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) [2021-10-24 09:48:05,081 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2021-10-24 09:48:05,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-24 09:48:05,083 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:48:05,083 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1] [2021-10-24 09:48:05,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:48:05,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:48:05,293 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-24 09:48:05,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:48:05,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1869725746, now seen corresponding path program 2 times [2021-10-24 09:48:05,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:48:05,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650668058] [2021-10-24 09:48:05,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:48:05,294 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:48:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:48:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-24 09:48:05,359 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:48:05,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650668058] [2021-10-24 09:48:05,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650668058] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-24 09:48:05,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294386739] [2021-10-24 09:48:05,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-24 09:48:05,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:48:05,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:48:05,377 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:48:05,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 09:48:05,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-24 09:48:05,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:48:05,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 09:48:05,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:48:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-24 09:48:05,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:48:05,686 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-24 09:48:05,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294386739] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:48:05,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1632197358] [2021-10-24 09:48:05,690 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2021-10-24 09:48:05,690 INFO L166 IcfgInterpreter]: Building call graph [2021-10-24 09:48:05,691 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-24 09:48:05,691 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-24 09:48:05,691 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-24 09:48:05,718 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-24 09:48:05,728 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-10-24 09:48:05,734 INFO L180 QuantifierPusher]: treesize reduction 18, result has 63.3 percent of original size [2021-10-24 09:48:05,736 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-10-24 09:48:05,749 INFO L180 QuantifierPusher]: treesize reduction 7, result has 83.7 percent of original size [2021-10-24 09:48:05,751 INFO L185 QuantifierPusher]: treesize reduction 6, result has 81.3 percent of original size 26 [2021-10-24 09:48:05,754 INFO L180 QuantifierPusher]: treesize reduction 19, result has 63.5 percent of original size [2021-10-24 09:48:05,756 INFO L185 QuantifierPusher]: treesize reduction 3, result has 88.9 percent of original size 24 [2021-10-24 09:48:05,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,792 INFO L180 QuantifierPusher]: treesize reduction 8, result has 90.2 percent of original size [2021-10-24 09:48:05,801 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 76 [2021-10-24 09:48:05,809 INFO L180 QuantifierPusher]: treesize reduction 10, result has 89.6 percent of original size [2021-10-24 09:48:05,819 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 86 [2021-10-24 09:48:05,824 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,835 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,836 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,850 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,853 INFO L180 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size [2021-10-24 09:48:05,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-24 09:48:05,861 INFO L180 QuantifierPusher]: treesize reduction 10, result has 77.3 percent of original size [2021-10-24 09:48:05,864 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-10-24 09:48:05,868 INFO L180 QuantifierPusher]: treesize reduction 5, result has 84.8 percent of original size [2021-10-24 09:48:05,870 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-10-24 09:48:05,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,891 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,900 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,904 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,918 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,957 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,960 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:05,972 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.7 percent of original size [2021-10-24 09:48:05,980 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 109 [2021-10-24 09:48:05,983 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-24 09:48:06,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 09:48:06,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-24 09:48:06,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2021-10-24 09:48:06,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954238000] [2021-10-24 09:48:06,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:48:06,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:48:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:48:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-10-24 09:48:06,510 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:06,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:48:06,536 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2021-10-24 09:48:06,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:48:06,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-10-24 09:48:06,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:48:06,538 INFO L225 Difference]: With dead ends: 30 [2021-10-24 09:48:06,538 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:48:06,539 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 547.8ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-24 09:48:06,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:48:06,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:48:06,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:48:06,544 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-10-24 09:48:06,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:48:06,545 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:48:06,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:48:06,545 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:48:06,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:48:06,548 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:48:06,550 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:48:06,551 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:48:06,551 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-24 09:48:06,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 09:48:06,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:48:06,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 09:48:06,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:06,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:48:06,788 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-24 09:48:06,788 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 09:48:06,789 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-24 09:48:06,789 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-24 09:48:06,789 INFO L857 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-10-24 09:48:06,789 INFO L857 garLoopResultBuilder]: For program point L21(lines 21 26) no Hoare annotation was computed. [2021-10-24 09:48:06,790 INFO L853 garLoopResultBuilder]: At program point L21-2(lines 20 27) the Hoare annotation is: (and (<= ULTIMATE.start_main_~m~0 2147483647) (<= 0 ULTIMATE.start_main_~v2~0) (<= ULTIMATE.start_main_~v1~0 2147483647) (<= ULTIMATE.start_main_~n~0 2147483647)) [2021-10-24 09:48:06,790 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 28) no Hoare annotation was computed. [2021-10-24 09:48:06,790 INFO L860 garLoopResultBuilder]: At program point L17-1(lines 17 28) the Hoare annotation is: true [2021-10-24 09:48:06,790 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2021-10-24 09:48:06,790 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-10-24 09:48:06,791 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 09:48:06,791 INFO L857 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2021-10-24 09:48:06,791 INFO L857 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-10-24 09:48:06,796 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:48:06,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:48:06 BoogieIcfgContainer [2021-10-24 09:48:06,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:48:06,832 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:48:06,832 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:48:06,832 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:48:06,833 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:48:02" (3/4) ... [2021-10-24 09:48:06,836 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:48:06,845 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-24 09:48:06,845 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 09:48:06,846 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:48:06,879 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:48:06,879 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:48:06,880 INFO L168 Benchmark]: Toolchain (without parser) took 4732.72 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 70.2 MB in the beginning and 69.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 25.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:06,881 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 53.9 MB in the beginning and 53.9 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:48:06,881 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.29 ms. Allocated memory is still 102.8 MB. Free memory was 70.0 MB in the beginning and 82.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:06,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.91 ms. Allocated memory is still 102.8 MB. Free memory was 82.7 MB in the beginning and 81.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:48:06,882 INFO L168 Benchmark]: Boogie Preprocessor took 20.04 ms. Allocated memory is still 102.8 MB. Free memory was 81.2 MB in the beginning and 80.6 MB in the end (delta: 534.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:48:06,882 INFO L168 Benchmark]: RCFGBuilder took 283.73 ms. Allocated memory is still 102.8 MB. Free memory was 80.6 MB in the beginning and 71.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:06,883 INFO L168 Benchmark]: TraceAbstraction took 4071.32 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 71.2 MB in the beginning and 71.4 MB in the end (delta: -208.7 kB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:06,883 INFO L168 Benchmark]: Witness Printer took 47.12 ms. Allocated memory is still 127.9 MB. Free memory was 71.4 MB in the beginning and 69.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:48:06,885 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 81.8 MB. Free memory was 53.9 MB in the beginning and 53.9 MB in the end (delta: 28.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 261.29 ms. Allocated memory is still 102.8 MB. Free memory was 70.0 MB in the beginning and 82.7 MB in the end (delta: -12.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.91 ms. Allocated memory is still 102.8 MB. Free memory was 82.7 MB in the beginning and 81.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.04 ms. Allocated memory is still 102.8 MB. Free memory was 81.2 MB in the beginning and 80.6 MB in the end (delta: 534.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 283.73 ms. Allocated memory is still 102.8 MB. Free memory was 80.6 MB in the beginning and 71.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4071.32 ms. Allocated memory was 102.8 MB in the beginning and 127.9 MB in the end (delta: 25.2 MB). Free memory was 71.2 MB in the beginning and 71.4 MB in the end (delta: -208.7 kB). Peak memory consumption was 26.2 MB. Max. memory is 16.1 GB. * Witness Printer took 47.12 ms. Allocated memory is still 127.9 MB. Free memory was 71.4 MB in the beginning and 69.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3964.1ms, OverallIterations: 6, TraceHistogramMax: 5, EmptinessCheckTime: 17.4ms, AutomataDifference: 281.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 23.5ms, InitialAbstractionConstructionTime: 12.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 43 SDtfs, 35 SDslu, 23 SDs, 0 SdLazy, 56 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 94.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1203.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 70.3ms AutomataMinimizationTime, 6 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 14 HoareAnnotationTreeSize, 2 FomulaSimplifications, 89 FormulaSimplificationTreeSizeReduction, 10.3ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 6.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 19.6ms SsaConstructionTime, 78.9ms SatisfiabilityAnalysisTime, 649.2ms InterpolantComputationTime, 106 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 394 SizeOfPredicates, 2 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 132/153 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((m <= 2147483647 && 0 <= v2) && v1 <= 2147483647) && n <= 2147483647 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-24 09:48:06,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8808a65-437b-4e46-b951-31a953354e1f/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...