./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI --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 30e0974778487c3ac56035f1f8ab25ce73456d36b8987ec761ccfaf99f917331 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:02:27,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:02:27,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:02:27,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:02:27,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:02:27,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:02:27,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:02:27,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:02:27,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:02:27,625 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:02:27,626 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:02:27,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:02:27,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:02:27,631 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:02:27,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:02:27,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:02:27,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:02:27,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:02:27,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:02:27,641 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:02:27,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:02:27,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:02:27,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:02:27,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:02:27,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:02:27,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:02:27,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:02:27,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:02:27,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:02:27,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:02:27,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:02:27,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:02:27,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:02:27,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:02:27,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:02:27,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:02:27,670 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:02:27,670 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:02:27,670 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:02:27,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:02:27,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:02:27,676 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-03 02:02:27,719 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:02:27,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:02:27,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:02:27,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:02:27,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:02:27,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:02:27,721 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:02:27,722 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:02:27,722 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:02:27,722 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:02:27,723 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:02:27,723 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:02:27,724 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:02:27,724 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:02:27,724 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:02:27,724 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:02:27,724 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:02:27,725 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:02:27,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:02:27,726 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 02:02:27,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:02:27,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:02:27,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:02:27,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:02:27,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:02:27,727 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 02:02:27,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:02:27,727 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:02:27,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:02:27,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:02:27,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:02:27,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:02:27,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:02:27,729 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:02:27,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:02:27,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:02:27,730 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:02:27,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:02:27,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:02:27,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:02:27,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30e0974778487c3ac56035f1f8ab25ce73456d36b8987ec761ccfaf99f917331 [2022-11-03 02:02:28,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:02:28,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:02:28,090 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:02:28,091 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:02:28,092 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:02:28,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2022-11-03 02:02:28,167 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/data/ac01c0025/801e3d3fb1954b37b580fd09d4344530/FLAGa97e0f0f2 [2022-11-03 02:02:28,609 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:02:28,609 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2022-11-03 02:02:28,616 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/data/ac01c0025/801e3d3fb1954b37b580fd09d4344530/FLAGa97e0f0f2 [2022-11-03 02:02:28,995 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/data/ac01c0025/801e3d3fb1954b37b580fd09d4344530 [2022-11-03 02:02:28,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:02:28,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:02:29,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:02:29,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:02:29,008 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:02:29,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:02:28" (1/1) ... [2022-11-03 02:02:29,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709f6234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29, skipping insertion in model container [2022-11-03 02:02:29,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:02:28" (1/1) ... [2022-11-03 02:02:29,019 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:02:29,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:02:29,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:02:29,262 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:02:29,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:02:29,291 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:02:29,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29 WrapperNode [2022-11-03 02:02:29,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:02:29,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:02:29,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:02:29,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:02:29,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,325 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2022-11-03 02:02:29,325 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:02:29,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:02:29,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:02:29,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:02:29,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,352 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:02:29,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:02:29,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:02:29,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:02:29,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (1/1) ... [2022-11-03 02:02:29,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:02:29,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:29,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:02:29,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:02:29,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:02:29,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:02:29,534 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:02:29,536 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:02:29,688 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:02:29,722 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:02:29,723 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:02:29,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:29 BoogieIcfgContainer [2022-11-03 02:02:29,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:02:29,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:02:29,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:02:29,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:02:29,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:02:28" (1/3) ... [2022-11-03 02:02:29,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714768fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:02:29, skipping insertion in model container [2022-11-03 02:02:29,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:02:29" (2/3) ... [2022-11-03 02:02:29,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@714768fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:02:29, skipping insertion in model container [2022-11-03 02:02:29,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:02:29" (3/3) ... [2022-11-03 02:02:29,737 INFO L112 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2022-11-03 02:02:29,759 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:02:29,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-03 02:02:29,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:02:29,838 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@726c0169, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:02:29,839 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-03 02:02:29,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 17 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) [2022-11-03 02:02:29,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:02:29,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:29,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:02:29,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:02:29,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:29,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2633557, now seen corresponding path program 1 times [2022-11-03 02:02:29,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:29,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4877061] [2022-11-03 02:02:29,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:29,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:30,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:30,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4877061] [2022-11-03 02:02:30,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4877061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:30,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:30,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:02:30,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489472209] [2022-11-03 02:02:30,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:30,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:30,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:30,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:30,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:30,133 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 17 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:30,231 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-11-03 02:02:30,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:30,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-03 02:02:30,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:30,248 INFO L225 Difference]: With dead ends: 48 [2022-11-03 02:02:30,248 INFO L226 Difference]: Without dead ends: 29 [2022-11-03 02:02:30,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:30,259 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:30,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 18 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:30,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-03 02:02:30,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26. [2022-11-03 02:02:30,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.65) internal successors, (33), 25 states have internal predecessors, (33), 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) [2022-11-03 02:02:30,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2022-11-03 02:02:30,322 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 4 [2022-11-03 02:02:30,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:30,323 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2022-11-03 02:02:30,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:30,325 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-11-03 02:02:30,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 02:02:30,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:30,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 02:02:30,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:02:30,327 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:02:30,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:30,328 INFO L85 PathProgramCache]: Analyzing trace with hash 81640345, now seen corresponding path program 1 times [2022-11-03 02:02:30,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:30,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221904427] [2022-11-03 02:02:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:30,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:30,375 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:30,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221904427] [2022-11-03 02:02:30,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221904427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:30,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:30,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:02:30,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91882543] [2022-11-03 02:02:30,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:30,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:30,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:30,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:30,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:30,379 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-11-03 02:02:30,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:30,420 INFO L93 Difference]: Finished difference Result 27 states and 34 transitions. [2022-11-03 02:02:30,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:30,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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 [2022-11-03 02:02:30,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:30,422 INFO L225 Difference]: With dead ends: 27 [2022-11-03 02:02:30,422 INFO L226 Difference]: Without dead ends: 25 [2022-11-03 02:02:30,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:30,424 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:30,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 8 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:02:30,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-03 02:02:30,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-11-03 02:02:30,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.5) internal successors, (30), 23 states have internal predecessors, (30), 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) [2022-11-03 02:02:30,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-11-03 02:02:30,431 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 5 [2022-11-03 02:02:30,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:30,431 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-03 02:02:30,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2022-11-03 02:02:30,432 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2022-11-03 02:02:30,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 02:02:30,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:30,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 02:02:30,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:02:30,433 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:02:30,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:30,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1764965715, now seen corresponding path program 1 times [2022-11-03 02:02:30,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:30,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934002902] [2022-11-03 02:02:30,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:30,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:30,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:30,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:30,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934002902] [2022-11-03 02:02:30,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934002902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:30,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:30,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:02:30,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067989477] [2022-11-03 02:02:30,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:30,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:30,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:30,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:30,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:30,498 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:30,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:30,513 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2022-11-03 02:02:30,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:30,513 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-03 02:02:30,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:30,514 INFO L225 Difference]: With dead ends: 24 [2022-11-03 02:02:30,514 INFO L226 Difference]: Without dead ends: 23 [2022-11-03 02:02:30,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:30,516 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:30,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 10 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:02:30,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-03 02:02:30,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-03 02:02:30,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.4) internal successors, (28), 22 states have internal predecessors, (28), 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) [2022-11-03 02:02:30,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-11-03 02:02:30,523 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 6 [2022-11-03 02:02:30,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:30,523 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-11-03 02:02:30,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:30,524 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-11-03 02:02:30,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:02:30,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:30,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:30,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:02:30,525 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:02:30,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:30,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1120637754, now seen corresponding path program 1 times [2022-11-03 02:02:30,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:30,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256319910] [2022-11-03 02:02:30,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:30,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:30,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:30,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:30,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256319910] [2022-11-03 02:02:30,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256319910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:02:30,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:02:30,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:02:30,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237012765] [2022-11-03 02:02:30,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:02:30,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:02:30,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:30,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:02:30,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:30,601 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 3 states, 2 states have (on average 3.5) 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) [2022-11-03 02:02:30,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:30,629 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-11-03 02:02:30,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:02:30,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) 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 [2022-11-03 02:02:30,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:30,631 INFO L225 Difference]: With dead ends: 30 [2022-11-03 02:02:30,631 INFO L226 Difference]: Without dead ends: 29 [2022-11-03 02:02:30,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:02:30,633 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:30,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 15 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:02:30,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-03 02:02:30,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2022-11-03 02:02:30,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 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) [2022-11-03 02:02:30,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-03 02:02:30,641 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 7 [2022-11-03 02:02:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:30,641 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-03 02:02:30,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) 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) [2022-11-03 02:02:30,642 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-03 02:02:30,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:02:30,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:30,643 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:02:30,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:02:30,643 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:02:30,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:30,644 INFO L85 PathProgramCache]: Analyzing trace with hash 189213058, now seen corresponding path program 1 times [2022-11-03 02:02:30,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:30,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194664968] [2022-11-03 02:02:30,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:30,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:30,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:30,726 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:30,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194664968] [2022-11-03 02:02:30,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194664968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:02:30,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938936153] [2022-11-03 02:02:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:30,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:30,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:30,730 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:02:30,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:02:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:30,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:02:30,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:30,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:30,890 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:30,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938936153] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:30,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2072775952] [2022-11-03 02:02:30,909 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:02:30,909 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:02:30,913 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:02:30,918 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:02:30,919 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:02:31,433 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:02:31,660 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '354#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (<= |ULTIMATE.start_main_~y~0#1| 2147483646)) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-11-03 02:02:31,661 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:02:31,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:02:31,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-03 02:02:31,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874059023] [2022-11-03 02:02:31,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:02:31,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:02:31,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:31,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:02:31,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:02:31,664 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:31,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:31,729 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2022-11-03 02:02:31,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:02:31,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 02:02:31,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:31,731 INFO L225 Difference]: With dead ends: 59 [2022-11-03 02:02:31,732 INFO L226 Difference]: Without dead ends: 57 [2022-11-03 02:02:31,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:02:31,734 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 40 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:31,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 30 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:31,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-03 02:02:31,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 40. [2022-11-03 02:02:31,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.263157894736842) internal successors, (48), 39 states have internal predecessors, (48), 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) [2022-11-03 02:02:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2022-11-03 02:02:31,743 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 10 [2022-11-03 02:02:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:31,744 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2022-11-03 02:02:31,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:02:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2022-11-03 02:02:31,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 02:02:31,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:31,746 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1] [2022-11-03 02:02:31,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:31,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:31,967 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:02:31,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:31,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1890673500, now seen corresponding path program 2 times [2022-11-03 02:02:31,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:31,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991336649] [2022-11-03 02:02:31,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:31,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:32,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:32,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991336649] [2022-11-03 02:02:32,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991336649] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:02:32,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262794072] [2022-11-03 02:02:32,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:02:32,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:32,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:32,195 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:02:32,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:02:32,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-03 02:02:32,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:02:32,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:02:32,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:32,308 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:32,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:32,410 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:32,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262794072] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:32,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1867494096] [2022-11-03 02:02:32,413 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:02:32,414 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:02:32,414 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:02:32,414 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:02:32,415 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:02:32,665 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:02:32,906 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '615#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (<= |ULTIMATE.start_main_~y~0#1| 2147483646)) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-11-03 02:02:32,906 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:02:32,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:02:32,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-03 02:02:32,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012123750] [2022-11-03 02:02:32,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:02:32,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:02:32,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:32,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:02:32,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:02:32,909 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 12 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 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) [2022-11-03 02:02:33,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:33,084 INFO L93 Difference]: Finished difference Result 171 states and 221 transitions. [2022-11-03 02:02:33,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:02:33,085 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 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 22 [2022-11-03 02:02:33,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:33,092 INFO L225 Difference]: With dead ends: 171 [2022-11-03 02:02:33,092 INFO L226 Difference]: Without dead ends: 169 [2022-11-03 02:02:33,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=198, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:02:33,098 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 163 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:33,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 68 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:02:33,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-03 02:02:33,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 100. [2022-11-03 02:02:33,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 98 states have (on average 1.2244897959183674) internal successors, (120), 99 states have internal predecessors, (120), 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) [2022-11-03 02:02:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 120 transitions. [2022-11-03 02:02:33,116 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 120 transitions. Word has length 22 [2022-11-03 02:02:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:33,117 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 120 transitions. [2022-11-03 02:02:33,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 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) [2022-11-03 02:02:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 120 transitions. [2022-11-03 02:02:33,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-03 02:02:33,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:33,118 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1] [2022-11-03 02:02:33,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:33,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-03 02:02:33,339 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:02:33,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:33,340 INFO L85 PathProgramCache]: Analyzing trace with hash -388861424, now seen corresponding path program 3 times [2022-11-03 02:02:33,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:33,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603137498] [2022-11-03 02:02:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:33,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:33,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:33,741 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:33,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:33,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603137498] [2022-11-03 02:02:33,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603137498] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:02:33,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380913414] [2022-11-03 02:02:33,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:02:33,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:33,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:33,743 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:02:33,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:02:33,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:02:33,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:02:33,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:02:33,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:33,924 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:33,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:34,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380913414] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:34,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [638877753] [2022-11-03 02:02:34,227 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:02:34,227 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:02:34,227 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:02:34,227 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:02:34,228 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:02:34,432 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:02:34,660 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1238#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (<= |ULTIMATE.start_main_~y~0#1| 2147483646)) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-11-03 02:02:34,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:02:34,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:02:34,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-03 02:02:34,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468719585] [2022-11-03 02:02:34,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:02:34,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 02:02:34,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:34,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 02:02:34,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=528, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:02:34,664 INFO L87 Difference]: Start difference. First operand 100 states and 120 transitions. Second operand has 24 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 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) [2022-11-03 02:02:34,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:34,957 INFO L93 Difference]: Finished difference Result 540 states and 689 transitions. [2022-11-03 02:02:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 02:02:34,957 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 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 46 [2022-11-03 02:02:34,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:34,959 INFO L225 Difference]: With dead ends: 540 [2022-11-03 02:02:34,960 INFO L226 Difference]: Without dead ends: 538 [2022-11-03 02:02:34,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=342, Invalid=528, Unknown=0, NotChecked=0, Total=870 [2022-11-03 02:02:34,961 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 407 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:34,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 140 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:02:34,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-03 02:02:34,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 220. [2022-11-03 02:02:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 218 states have (on average 1.2110091743119267) internal successors, (264), 219 states have internal predecessors, (264), 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) [2022-11-03 02:02:35,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 264 transitions. [2022-11-03 02:02:35,006 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 264 transitions. Word has length 46 [2022-11-03 02:02:35,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:35,007 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 264 transitions. [2022-11-03 02:02:35,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.0) internal successors, (92), 23 states have internal predecessors, (92), 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) [2022-11-03 02:02:35,008 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 264 transitions. [2022-11-03 02:02:35,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-03 02:02:35,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:35,012 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1] [2022-11-03 02:02:35,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:35,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:35,235 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:02:35,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:35,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1768749944, now seen corresponding path program 4 times [2022-11-03 02:02:35,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:35,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494516245] [2022-11-03 02:02:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:35,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:36,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:36,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494516245] [2022-11-03 02:02:36,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494516245] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:02:36,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642289937] [2022-11-03 02:02:36,026 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:02:36,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:36,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:36,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:02:36,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:02:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:36,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 02:02:36,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:36,273 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:36,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:37,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642289937] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:37,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1935407605] [2022-11-03 02:02:37,215 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:02:37,215 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:02:37,215 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:02:37,216 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:02:37,216 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:02:37,366 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:02:37,521 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2761#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (<= |ULTIMATE.start_main_~y~0#1| 2147483646)) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-11-03 02:02:37,522 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:02:37,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:02:37,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-03 02:02:37,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090932597] [2022-11-03 02:02:37,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:02:37,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-03 02:02:37,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:37,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-03 02:02:37,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1236, Invalid=1520, Unknown=0, NotChecked=0, Total=2756 [2022-11-03 02:02:37,525 INFO L87 Difference]: Start difference. First operand 220 states and 264 transitions. Second operand has 48 states, 47 states have (on average 4.0) internal successors, (188), 47 states have internal predecessors, (188), 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) [2022-11-03 02:02:38,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:38,390 INFO L93 Difference]: Finished difference Result 1818 states and 2273 transitions. [2022-11-03 02:02:38,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-03 02:02:38,391 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.0) internal successors, (188), 47 states have internal predecessors, (188), 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 94 [2022-11-03 02:02:38,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:38,397 INFO L225 Difference]: With dead ends: 1818 [2022-11-03 02:02:38,397 INFO L226 Difference]: Without dead ends: 1816 [2022-11-03 02:02:38,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1236, Invalid=1520, Unknown=0, NotChecked=0, Total=2756 [2022-11-03 02:02:38,400 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1428 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:38,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 282 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:02:38,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2022-11-03 02:02:38,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 460. [2022-11-03 02:02:38,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.205240174672489) internal successors, (552), 459 states have internal predecessors, (552), 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) [2022-11-03 02:02:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 552 transitions. [2022-11-03 02:02:38,447 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 552 transitions. Word has length 94 [2022-11-03 02:02:38,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:38,447 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 552 transitions. [2022-11-03 02:02:38,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.0) internal successors, (188), 47 states have internal predecessors, (188), 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) [2022-11-03 02:02:38,448 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 552 transitions. [2022-11-03 02:02:38,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-03 02:02:38,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:38,454 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1] [2022-11-03 02:02:38,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:38,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:38,679 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:02:38,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:38,679 INFO L85 PathProgramCache]: Analyzing trace with hash 926137928, now seen corresponding path program 5 times [2022-11-03 02:02:38,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:38,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553662011] [2022-11-03 02:02:38,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:38,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:41,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:41,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553662011] [2022-11-03 02:02:41,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553662011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:02:41,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949809120] [2022-11-03 02:02:41,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:02:41,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:41,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:41,206 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:02:41,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:02:41,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-03 02:02:41,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:02:41,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-03 02:02:41,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:41,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:41,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:02:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 0 proven. 4278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:45,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949809120] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:02:45,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [455245423] [2022-11-03 02:02:45,075 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:02:45,075 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:02:45,076 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:02:45,076 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:02:45,076 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:02:45,221 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:02:45,414 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6731#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (<= |ULTIMATE.start_main_~y~0#1| 2147483646)) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-11-03 02:02:45,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:02:45,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:02:45,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-03 02:02:45,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599336795] [2022-11-03 02:02:45,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:02:45,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-03 02:02:45,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:02:45,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-03 02:02:45,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4764, Invalid=5336, Unknown=0, NotChecked=0, Total=10100 [2022-11-03 02:02:45,422 INFO L87 Difference]: Start difference. First operand 460 states and 552 transitions. Second operand has 96 states, 95 states have (on average 4.0) internal successors, (380), 95 states have internal predecessors, (380), 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) [2022-11-03 02:02:49,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:02:49,123 INFO L93 Difference]: Finished difference Result 6534 states and 8033 transitions. [2022-11-03 02:02:49,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-03 02:02:49,124 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.0) internal successors, (380), 95 states have internal predecessors, (380), 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 190 [2022-11-03 02:02:49,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:02:49,144 INFO L225 Difference]: With dead ends: 6534 [2022-11-03 02:02:49,144 INFO L226 Difference]: Without dead ends: 6532 [2022-11-03 02:02:49,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4764, Invalid=5336, Unknown=0, NotChecked=0, Total=10100 [2022-11-03 02:02:49,151 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2869 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2869 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:02:49,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2869 Valid, 570 Invalid, 1076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:02:49,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6532 states. [2022-11-03 02:02:49,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6532 to 940. [2022-11-03 02:02:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 938 states have (on average 1.2025586353944564) internal successors, (1128), 939 states have internal predecessors, (1128), 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) [2022-11-03 02:02:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1128 transitions. [2022-11-03 02:02:49,256 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1128 transitions. Word has length 190 [2022-11-03 02:02:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:02:49,258 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1128 transitions. [2022-11-03 02:02:49,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.0) internal successors, (380), 95 states have internal predecessors, (380), 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) [2022-11-03 02:02:49,259 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1128 transitions. [2022-11-03 02:02:49,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-11-03 02:02:49,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:02:49,272 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 1, 1, 1, 1] [2022-11-03 02:02:49,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:02:49,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:49,487 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:02:49,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:02:49,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2122843112, now seen corresponding path program 6 times [2022-11-03 02:02:49,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:02:49,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151439967] [2022-11-03 02:02:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:02:49,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:02:49,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:02:57,805 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:57,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:02:57,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151439967] [2022-11-03 02:02:57,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151439967] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:02:57,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496882779] [2022-11-03 02:02:57,806 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-03 02:02:57,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:02:57,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:02:57,807 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:02:57,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:02:58,037 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-03 02:02:58,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:02:58,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-03 02:02:58,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:02:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:02:58,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:03:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 17766 backedges. 0 proven. 17766 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:03:09,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496882779] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:03:09,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2031327542] [2022-11-03 02:03:09,749 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:03:09,749 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:03:09,750 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:03:09,750 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:03:09,750 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:03:09,894 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:03:10,165 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18189#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (<= |ULTIMATE.start_main_~y~0#1| 2147483646)) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-11-03 02:03:10,165 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:03:10,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:03:10,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-11-03 02:03:10,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941068164] [2022-11-03 02:03:10,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:03:10,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-03 02:03:10,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:03:10,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-03 02:03:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18732, Invalid=19880, Unknown=0, NotChecked=0, Total=38612 [2022-11-03 02:03:10,182 INFO L87 Difference]: Start difference. First operand 940 states and 1128 transitions. Second operand has 192 states, 191 states have (on average 4.0) internal successors, (764), 191 states have internal predecessors, (764), 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) [2022-11-03 02:03:40,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:03:40,160 INFO L93 Difference]: Finished difference Result 24606 states and 29921 transitions. [2022-11-03 02:03:40,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-03 02:03:40,161 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.0) internal successors, (764), 191 states have internal predecessors, (764), 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 382 [2022-11-03 02:03:40,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:03:40,249 INFO L225 Difference]: With dead ends: 24606 [2022-11-03 02:03:40,249 INFO L226 Difference]: Without dead ends: 24604 [2022-11-03 02:03:40,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1239 GetRequests, 1044 SyntacticMatches, 0 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1609 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=18732, Invalid=19880, Unknown=0, NotChecked=0, Total=38612 [2022-11-03 02:03:40,259 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 5641 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1150 mSolverCounterSat, 966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5641 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 966 IncrementalHoareTripleChecker+Valid, 1150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:03:40,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5641 Valid, 1144 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [966 Valid, 1150 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 02:03:40,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24604 states. [2022-11-03 02:03:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24604 to 1900. [2022-11-03 02:03:40,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1900 states, 1898 states have (on average 1.2012644889357218) internal successors, (2280), 1899 states have internal predecessors, (2280), 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) [2022-11-03 02:03:40,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2280 transitions. [2022-11-03 02:03:40,582 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2280 transitions. Word has length 382 [2022-11-03 02:03:40,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:03:40,583 INFO L495 AbstractCegarLoop]: Abstraction has 1900 states and 2280 transitions. [2022-11-03 02:03:40,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.0) internal successors, (764), 191 states have internal predecessors, (764), 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) [2022-11-03 02:03:40,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2280 transitions. [2022-11-03 02:03:40,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2022-11-03 02:03:40,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:03:40,608 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 1, 1, 1, 1] [2022-11-03 02:03:40,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:03:40,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:03:40,823 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:03:40,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:03:40,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2008314072, now seen corresponding path program 7 times [2022-11-03 02:03:40,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:03:40,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397636074] [2022-11-03 02:03:40,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:03:40,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:03:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:09,477 INFO L134 CoverageAnalysis]: Checked inductivity of 72390 backedges. 0 proven. 72390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:04:09,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:04:09,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397636074] [2022-11-03 02:04:09,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397636074] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:04:09,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541480161] [2022-11-03 02:04:09,478 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-03 02:04:09,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:04:09,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:04:09,483 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:04:09,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 02:04:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:04:09,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 1347 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-03 02:04:09,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:04:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 72390 backedges. 0 proven. 72390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:04:11,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:04:53,967 INFO L134 CoverageAnalysis]: Checked inductivity of 72390 backedges. 0 proven. 72390 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:04:53,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541480161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:04:53,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [371818546] [2022-11-03 02:04:53,970 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-03 02:04:53,970 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:04:53,970 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:04:53,970 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:04:53,971 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:04:54,094 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:04:54,581 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '54991#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~m~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483647) (not (<= |ULTIMATE.start_main_~y~0#1| 2147483646)) (<= |ULTIMATE.start_main_~m~0#1| 2147483647))' at error location [2022-11-03 02:04:54,581 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:04:54,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:04:54,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-11-03 02:04:54,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438963633] [2022-11-03 02:04:54,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:04:54,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-03 02:04:54,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:04:54,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-03 02:04:54,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74316, Invalid=76616, Unknown=0, NotChecked=0, Total=150932 [2022-11-03 02:04:54,617 INFO L87 Difference]: Start difference. First operand 1900 states and 2280 transitions. Second operand has 384 states, 383 states have (on average 4.0) internal successors, (1532), 383 states have internal predecessors, (1532), 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) [2022-11-03 02:12:49,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:12:49,135 INFO L93 Difference]: Finished difference Result 95310 states and 115169 transitions. [2022-11-03 02:12:49,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-03 02:12:49,136 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 4.0) internal successors, (1532), 383 states have internal predecessors, (1532), 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 766 [2022-11-03 02:12:49,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:12:49,310 INFO L225 Difference]: With dead ends: 95310 [2022-11-03 02:12:49,310 INFO L226 Difference]: Without dead ends: 95308 [2022-11-03 02:12:49,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2487 GetRequests, 2100 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3241 ImplicationChecksByTransitivity, 56.0s TimeCoverageRelationStatistics Valid=74316, Invalid=76616, Unknown=0, NotChecked=0, Total=150932 [2022-11-03 02:12:49,351 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 16161 mSDsluCounter, 2292 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 2622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16161 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 4936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2622 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:12:49,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16161 Valid, 2300 Invalid, 4936 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2622 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-03 02:12:49,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95308 states. [2022-11-03 02:12:50,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95308 to 3820. [2022-11-03 02:12:50,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3820 states, 3818 states have (on average 1.2006286013619696) internal successors, (4584), 3819 states have internal predecessors, (4584), 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) [2022-11-03 02:12:50,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3820 states to 3820 states and 4584 transitions. [2022-11-03 02:12:50,550 INFO L78 Accepts]: Start accepts. Automaton has 3820 states and 4584 transitions. Word has length 766 [2022-11-03 02:12:50,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:12:50,551 INFO L495 AbstractCegarLoop]: Abstraction has 3820 states and 4584 transitions. [2022-11-03 02:12:50,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 4.0) internal successors, (1532), 383 states have internal predecessors, (1532), 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) [2022-11-03 02:12:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 3820 states and 4584 transitions. [2022-11-03 02:12:50,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1535 [2022-11-03 02:12:50,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:12:50,602 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 382, 382, 1, 1, 1, 1] [2022-11-03 02:12:50,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:12:50,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 02:12:50,803 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-03 02:12:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:12:50,804 INFO L85 PathProgramCache]: Analyzing trace with hash -398547544, now seen corresponding path program 8 times [2022-11-03 02:12:50,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:12:50,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904884179] [2022-11-03 02:12:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:12:50,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:12:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:15:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 292230 backedges. 0 proven. 292230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:15:11,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:15:11,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904884179] [2022-11-03 02:15:11,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904884179] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:15:11,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208840271] [2022-11-03 02:15:11,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:15:11,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:15:11,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:15:11,804 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:15:11,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4f0f0ace-b489-487e-b931-1e133982bbba/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 02:15:24,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-11-03 02:15:24,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:15:24,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 384 conjunts are in the unsatisfiable core [2022-11-03 02:15:24,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:15:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 292230 backedges. 0 proven. 292230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:15:27,030 INFO L328 TraceCheckSpWp]: Computing backward predicates...