./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/DivMinus2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/DivMinus2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh --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 804e8d646f3136915195a4e5e9f5153cc3c1cd2abf96df3f09c683a14a27e4de --- 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-2329fc7 [2022-12-14 12:26:43,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:26:43,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:26:43,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:26:43,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:26:43,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:26:43,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:26:43,902 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:26:43,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:26:43,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:26:43,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:26:43,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:26:43,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:26:43,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:26:43,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:26:43,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:26:43,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:26:43,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:26:43,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:26:43,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:26:43,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:26:43,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:26:43,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:26:43,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:26:43,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:26:43,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:26:43,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:26:43,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:26:43,921 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:26:43,922 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:26:43,922 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:26:43,923 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:26:43,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:26:43,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:26:43,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:26:43,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:26:43,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:26:43,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:26:43,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:26:43,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:26:43,927 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:26:43,928 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 12:26:43,946 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:26:43,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:26:43,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:26:43,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:26:43,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:26:43,954 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:26:43,954 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:26:43,955 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:26:43,955 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:26:43,955 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:26:43,955 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:26:43,955 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:26:43,955 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:26:43,955 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:26:43,956 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:26:43,956 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:26:43,956 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:26:43,956 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:26:43,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:26:43,957 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:26:43,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:26:43,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:26:43,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:26:43,958 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:26:43,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:26:43,958 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 12:26:43,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:26:43,958 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:26:43,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:26:43,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:26:43,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:26:43,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:26:43,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:26:43,959 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:26:43,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:26:43,959 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:26:43,959 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:26:43,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:26:43,960 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:26:43,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:26:43,960 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_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 804e8d646f3136915195a4e5e9f5153cc3c1cd2abf96df3f09c683a14a27e4de [2022-12-14 12:26:44,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:26:44,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:26:44,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:26:44,183 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:26:44,183 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:26:44,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2022-12-14 12:26:46,787 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:26:46,903 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:26:46,903 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2022-12-14 12:26:46,908 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/data/fb0c5ff40/8b13b1767d7142b2b32fdf97cbb2bf33/FLAGc27239200 [2022-12-14 12:26:46,922 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/data/fb0c5ff40/8b13b1767d7142b2b32fdf97cbb2bf33 [2022-12-14 12:26:46,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:26:46,926 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:26:46,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:26:46,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:26:46,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:26:46,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:26:46" (1/1) ... [2022-12-14 12:26:46,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ab94a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:46, skipping insertion in model container [2022-12-14 12:26:46,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:26:46" (1/1) ... [2022-12-14 12:26:46,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:26:46,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:26:47,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:26:47,095 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:26:47,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:26:47,120 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:26:47,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:47 WrapperNode [2022-12-14 12:26:47,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:26:47,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:26:47,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:26:47,122 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:26:47,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:47" (1/1) ... [2022-12-14 12:26:47,132 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:47" (1/1) ... [2022-12-14 12:26:47,145 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2022-12-14 12:26:47,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:26:47,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:26:47,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:26:47,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:26:47,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:47" (1/1) ... [2022-12-14 12:26:47,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:47" (1/1) ... [2022-12-14 12:26:47,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:47" (1/1) ... [2022-12-14 12:26:47,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:47" (1/1) ... [2022-12-14 12:26:47,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:47" (1/1) ... [2022-12-14 12:26:47,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:47" (1/1) ... [2022-12-14 12:26:47,158 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:47" (1/1) ... [2022-12-14 12:26:47,158 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:47" (1/1) ... [2022-12-14 12:26:47,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:26:47,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:26:47,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:26:47,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:26:47,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:47" (1/1) ... [2022-12-14 12:26:47,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:26:47,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:26:47,181 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:26:47,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:26:47,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:26:47,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:26:47,266 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:26:47,268 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:26:47,352 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:26:47,372 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:26:47,373 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 12:26:47,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:26:47 BoogieIcfgContainer [2022-12-14 12:26:47,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:26:47,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:26:47,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:26:47,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:26:47,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:26:46" (1/3) ... [2022-12-14 12:26:47,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9b27cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:26:47, skipping insertion in model container [2022-12-14 12:26:47,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:26:47" (2/3) ... [2022-12-14 12:26:47,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9b27cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:26:47, skipping insertion in model container [2022-12-14 12:26:47,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:26:47" (3/3) ... [2022-12-14 12:26:47,384 INFO L112 eAbstractionObserver]: Analyzing ICFG DivMinus2.c [2022-12-14 12:26:47,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:26:47,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-12-14 12:26:47,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:26:47,446 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;@543f3b18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:26:47,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-12-14 12:26:47,450 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 24 states have internal predecessors, (27), 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) [2022-12-14 12:26:47,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 12:26:47,454 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:47,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 12:26:47,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:26:47,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:47,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2663876, now seen corresponding path program 1 times [2022-12-14 12:26:47,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:47,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922367094] [2022-12-14 12:26:47,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:47,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:26:47,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:47,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922367094] [2022-12-14 12:26:47,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922367094] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:26:47,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:26:47,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:26:47,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116584269] [2022-12-14 12:26:47,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:26:47,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:26:47,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:47,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:26:47,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:26:47,630 INFO L87 Difference]: Start difference. First operand has 25 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 24 states have internal predecessors, (27), 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) [2022-12-14 12:26:47,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:47,652 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-12-14 12:26:47,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:26:47,654 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 [2022-12-14 12:26:47,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:47,662 INFO L225 Difference]: With dead ends: 25 [2022-12-14 12:26:47,662 INFO L226 Difference]: Without dead ends: 23 [2022-12-14 12:26:47,665 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 [2022-12-14 12:26:47,668 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 20 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 [2022-12-14 12:26:47,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 20 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:26:47,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-14 12:26:47,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-12-14 12:26:47,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-12-14 12:26:47,707 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 4 [2022-12-14 12:26:47,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:47,707 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-12-14 12:26:47,707 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) [2022-12-14 12:26:47,707 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-12-14 12:26:47,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:26:47,708 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:47,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 12:26:47,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:26:47,709 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:26:47,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:47,709 INFO L85 PathProgramCache]: Analyzing trace with hash 82541347, now seen corresponding path program 1 times [2022-12-14 12:26:47,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:47,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114504557] [2022-12-14 12:26:47,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:47,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:26:47,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:47,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114504557] [2022-12-14 12:26:47,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114504557] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:26:47,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:26:47,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:26:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135026353] [2022-12-14 12:26:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:26:47,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:26:47,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:47,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:26:47,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:26:47,748 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:47,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:47,772 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2022-12-14 12:26:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:26:47,773 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 12:26:47,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:47,773 INFO L225 Difference]: With dead ends: 46 [2022-12-14 12:26:47,773 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 12:26:47,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:26:47,774 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:47,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:26:47,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 12:26:47,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 12:26:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.625) internal successors, (26), 23 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) [2022-12-14 12:26:47,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2022-12-14 12:26:47,778 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 5 [2022-12-14 12:26:47,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:47,778 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2022-12-14 12:26:47,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:47,778 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2022-12-14 12:26:47,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 12:26:47,779 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:47,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 12:26:47,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 12:26:47,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:26:47,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:47,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1736195402, now seen corresponding path program 1 times [2022-12-14 12:26:47,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:47,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403415771] [2022-12-14 12:26:47,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:47,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:26:47,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:47,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403415771] [2022-12-14 12:26:47,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403415771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:26:47,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:26:47,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:26:47,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916560955] [2022-12-14 12:26:47,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:26:47,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:26:47,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:47,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:26:47,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:26:47,815 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:47,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:47,847 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-12-14 12:26:47,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:26:47,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 12:26:47,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:47,848 INFO L225 Difference]: With dead ends: 25 [2022-12-14 12:26:47,848 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 12:26:47,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:26:47,849 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:47,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 11 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:26:47,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 12:26:47,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2022-12-14 12:26:47,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.5625) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-12-14 12:26:47,853 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 6 [2022-12-14 12:26:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:47,853 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-12-14 12:26:47,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:47,854 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-12-14 12:26:47,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 12:26:47,854 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:47,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:26:47,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 12:26:47,854 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:26:47,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2012517445, now seen corresponding path program 1 times [2022-12-14 12:26:47,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:47,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626180408] [2022-12-14 12:26:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:47,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:47,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:26:47,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:47,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626180408] [2022-12-14 12:26:47,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626180408] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:26:47,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:26:47,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:26:47,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453091780] [2022-12-14 12:26:47,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:26:47,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:26:47,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:47,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:26:47,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:26:47,885 INFO L87 Difference]: Start difference. First operand 23 states and 25 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) [2022-12-14 12:26:47,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:47,901 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-12-14 12:26:47,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:26:47,902 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 [2022-12-14 12:26:47,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:47,902 INFO L225 Difference]: With dead ends: 28 [2022-12-14 12:26:47,902 INFO L226 Difference]: Without dead ends: 27 [2022-12-14 12:26:47,902 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 [2022-12-14 12:26:47,903 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:47,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:26:47,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-14 12:26:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2022-12-14 12:26:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 25 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) [2022-12-14 12:26:47,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-12-14 12:26:47,907 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 7 [2022-12-14 12:26:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:47,907 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-12-14 12:26:47,907 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) [2022-12-14 12:26:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-12-14 12:26:47,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 12:26:47,908 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:47,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:26:47,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 12:26:47,908 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:26:47,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:47,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2036468584, now seen corresponding path program 1 times [2022-12-14 12:26:47,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:47,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786830841] [2022-12-14 12:26:47,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:47,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:26:47,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:47,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786830841] [2022-12-14 12:26:47,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786830841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:26:47,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:26:47,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:26:47,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660125764] [2022-12-14 12:26:47,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:26:47,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:26:47,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:47,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:26:47,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:26:47,936 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:47,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:47,950 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-12-14 12:26:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:26:47,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 12:26:47,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:47,950 INFO L225 Difference]: With dead ends: 26 [2022-12-14 12:26:47,950 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 12:26:47,951 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 [2022-12-14 12:26:47,951 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:47,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 12 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:26:47,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 12:26:47,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-12-14 12:26:47,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 24 states have internal predecessors, (27), 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) [2022-12-14 12:26:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-12-14 12:26:47,955 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 8 [2022-12-14 12:26:47,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:47,955 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-12-14 12:26:47,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:47,956 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-12-14 12:26:47,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:26:47,956 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:47,956 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:26:47,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 12:26:47,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:26:47,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:47,957 INFO L85 PathProgramCache]: Analyzing trace with hash -2022479876, now seen corresponding path program 1 times [2022-12-14 12:26:47,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:47,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603634054] [2022-12-14 12:26:47,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:47,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:26:48,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:48,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603634054] [2022-12-14 12:26:48,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603634054] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:26:48,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:26:48,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 12:26:48,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675651567] [2022-12-14 12:26:48,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:26:48,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:26:48,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:48,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:26:48,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:26:48,012 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-12-14 12:26:48,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:48,023 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2022-12-14 12:26:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:26:48,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 12:26:48,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:48,024 INFO L225 Difference]: With dead ends: 42 [2022-12-14 12:26:48,024 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 12:26:48,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:26:48,025 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:48,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 14 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:26:48,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 12:26:48,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-12-14 12:26:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-12-14 12:26:48,028 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2022-12-14 12:26:48,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:48,029 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-12-14 12:26:48,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-12-14 12:26:48,029 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-12-14 12:26:48,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:26:48,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:48,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:26:48,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 12:26:48,030 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:26:48,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:48,030 INFO L85 PathProgramCache]: Analyzing trace with hash -2022440988, now seen corresponding path program 1 times [2022-12-14 12:26:48,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:48,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123190961] [2022-12-14 12:26:48,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:48,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:48,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 12:26:48,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:48,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123190961] [2022-12-14 12:26:48,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123190961] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:26:48,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:26:48,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:26:48,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648180172] [2022-12-14 12:26:48,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:26:48,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:26:48,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:48,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:26:48,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:26:48,054 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-12-14 12:26:48,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:48,064 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-12-14 12:26:48,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:26:48,065 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 12:26:48,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:48,065 INFO L225 Difference]: With dead ends: 33 [2022-12-14 12:26:48,065 INFO L226 Difference]: Without dead ends: 32 [2022-12-14 12:26:48,065 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 [2022-12-14 12:26:48,066 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:48,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:26:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-14 12:26:48,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2022-12-14 12:26:48,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-12-14 12:26:48,071 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 11 [2022-12-14 12:26:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:48,071 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-12-14 12:26:48,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-12-14 12:26:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-12-14 12:26:48,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 12:26:48,072 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:48,072 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 12:26:48,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 12:26:48,072 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:26:48,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:48,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2016718558, now seen corresponding path program 1 times [2022-12-14 12:26:48,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:48,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616478207] [2022-12-14 12:26:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:48,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:26:48,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:48,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616478207] [2022-12-14 12:26:48,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616478207] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:26:48,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490730842] [2022-12-14 12:26:48,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:48,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:26:48,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:26:48,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:26:48,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:26:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:48,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:26:48,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:26:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 12:26:48,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:26:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:26:48,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490730842] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:26:48,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2123889085] [2022-12-14 12:26:48,313 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 12:26:48,313 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:26:48,316 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:26:48,320 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:26:48,321 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:26:48,507 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:26:48,808 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '582#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ 1 |ULTIMATE.start_main_~ytmp~0#1|)) (= |ULTIMATE.start_main_~res~0#1| 0) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_~x~0#1|) 0) (<= |ULTIMATE.start_main_~ytmp~0#1| 2147483646))' at error location [2022-12-14 12:26:48,808 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:26:48,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:26:48,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 5] total 9 [2022-12-14 12:26:48,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927917544] [2022-12-14 12:26:48,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:26:48,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 12:26:48,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:48,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 12:26:48,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-12-14 12:26:48,811 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:48,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:48,848 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-12-14 12:26:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:26:48,849 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 12:26:48,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:48,849 INFO L225 Difference]: With dead ends: 31 [2022-12-14 12:26:48,849 INFO L226 Difference]: Without dead ends: 30 [2022-12-14 12:26:48,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-12-14 12:26:48,851 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:48,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 10 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:26:48,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-14 12:26:48,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 22. [2022-12-14 12:26:48,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 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) [2022-12-14 12:26:48,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-12-14 12:26:48,856 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 13 [2022-12-14 12:26:48,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:48,856 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-12-14 12:26:48,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:26:48,856 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-12-14 12:26:48,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 12:26:48,857 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:48,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2022-12-14 12:26:48,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:26:49,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:26:49,058 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:26:49,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:49,058 INFO L85 PathProgramCache]: Analyzing trace with hash -699989904, now seen corresponding path program 1 times [2022-12-14 12:26:49,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:49,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275900590] [2022-12-14 12:26:49,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:49,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 12:26:49,093 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:49,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275900590] [2022-12-14 12:26:49,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275900590] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:26:49,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285863944] [2022-12-14 12:26:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:49,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:26:49,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:26:49,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:26:49,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:26:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:49,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:26:49,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:26:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 12:26:49,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:26:49,175 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 12:26:49,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285863944] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:26:49,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1954020069] [2022-12-14 12:26:49,177 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 12:26:49,178 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:26:49,178 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:26:49,178 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:26:49,178 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:26:49,460 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:26:49,733 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '786#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 12:26:49,733 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:26:49,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:26:49,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 12:26:49,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135310247] [2022-12-14 12:26:49,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:26:49,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:26:49,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:49,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:26:49,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-14 12:26:49,734 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2022-12-14 12:26:49,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:49,752 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2022-12-14 12:26:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:26:49,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 21 [2022-12-14 12:26:49,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:49,753 INFO L225 Difference]: With dead ends: 53 [2022-12-14 12:26:49,753 INFO L226 Difference]: Without dead ends: 52 [2022-12-14 12:26:49,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-14 12:26:49,753 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:49,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:26:49,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-12-14 12:26:49,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-12-14 12:26:49,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 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) [2022-12-14 12:26:49,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2022-12-14 12:26:49,758 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 21 [2022-12-14 12:26:49,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:49,758 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2022-12-14 12:26:49,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2022-12-14 12:26:49,759 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2022-12-14 12:26:49,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-14 12:26:49,759 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:49,759 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1] [2022-12-14 12:26:49,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 12:26:49,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:26:49,960 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:26:49,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:49,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1011189780, now seen corresponding path program 2 times [2022-12-14 12:26:49,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:49,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733301612] [2022-12-14 12:26:49,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:49,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 12:26:50,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:50,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733301612] [2022-12-14 12:26:50,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733301612] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:26:50,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531444630] [2022-12-14 12:26:50,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:26:50,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:26:50,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:26:50,038 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:26:50,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:26:50,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-14 12:26:50,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:26:50,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:26:50,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:26:50,124 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 12:26:50,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:26:50,204 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 12:26:50,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531444630] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:26:50,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1575015198] [2022-12-14 12:26:50,207 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 12:26:50,207 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:26:50,207 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:26:50,207 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:26:50,207 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:26:50,426 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:26:50,826 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1241#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 12:26:50,826 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:26:50,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:26:50,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-14 12:26:50,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482981374] [2022-12-14 12:26:50,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:26:50,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 12:26:50,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:50,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 12:26:50,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-12-14 12:26:50,829 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 12 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2022-12-14 12:26:50,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:50,876 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2022-12-14 12:26:50,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 12:26:50,876 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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 51 [2022-12-14 12:26:50,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:50,877 INFO L225 Difference]: With dead ends: 113 [2022-12-14 12:26:50,877 INFO L226 Difference]: Without dead ends: 112 [2022-12-14 12:26:50,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 132 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-12-14 12:26:50,878 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:50,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:26:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-12-14 12:26:50,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-12-14 12:26:50,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.1081081081081081) internal successors, (123), 111 states have internal predecessors, (123), 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) [2022-12-14 12:26:50,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2022-12-14 12:26:50,885 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 51 [2022-12-14 12:26:50,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:50,885 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2022-12-14 12:26:50,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2022-12-14 12:26:50,886 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2022-12-14 12:26:50,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 12:26:50,887 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:50,887 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1] [2022-12-14 12:26:50,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 12:26:51,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 12:26:51,088 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:26:51,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:51,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1484452444, now seen corresponding path program 3 times [2022-12-14 12:26:51,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:51,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047353752] [2022-12-14 12:26:51,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:51,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 12:26:51,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:51,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047353752] [2022-12-14 12:26:51,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047353752] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:26:51,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784074891] [2022-12-14 12:26:51,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:26:51,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:26:51,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:26:51,395 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:26:51,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:26:51,439 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:26:51,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:26:51,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 12:26:51,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:26:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 12:26:51,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:26:51,772 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 0 proven. 660 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 12:26:51,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784074891] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:26:51,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [607729048] [2022-12-14 12:26:51,774 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 12:26:51,774 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:26:51,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:26:51,775 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:26:51,775 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:26:51,977 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:26:52,402 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2225#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 12:26:52,402 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:26:52,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:26:52,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-12-14 12:26:52,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627416371] [2022-12-14 12:26:52,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:26:52,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 12:26:52,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:52,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 12:26:52,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=743, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 12:26:52,404 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand has 24 states, 23 states have (on average 9.652173913043478) internal successors, (222), 23 states have internal predecessors, (222), 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) [2022-12-14 12:26:52,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:52,489 INFO L93 Difference]: Finished difference Result 233 states and 267 transitions. [2022-12-14 12:26:52,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 12:26:52,490 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 9.652173913043478) internal successors, (222), 23 states have internal predecessors, (222), 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 111 [2022-12-14 12:26:52,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:52,492 INFO L225 Difference]: With dead ends: 233 [2022-12-14 12:26:52,492 INFO L226 Difference]: Without dead ends: 232 [2022-12-14 12:26:52,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 300 SyntacticMatches, 11 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=313, Invalid=743, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 12:26:52,493 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:52,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 162 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:26:52,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-12-14 12:26:52,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2022-12-14 12:26:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.103896103896104) internal successors, (255), 231 states have internal predecessors, (255), 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) [2022-12-14 12:26:52,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 255 transitions. [2022-12-14 12:26:52,506 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 255 transitions. Word has length 111 [2022-12-14 12:26:52,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:52,506 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 255 transitions. [2022-12-14 12:26:52,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 9.652173913043478) internal successors, (222), 23 states have internal predecessors, (222), 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) [2022-12-14 12:26:52,506 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 255 transitions. [2022-12-14 12:26:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-12-14 12:26:52,508 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:52,508 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 23, 23, 22, 1, 1] [2022-12-14 12:26:52,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-14 12:26:52,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:26:52,710 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:26:52,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:52,712 INFO L85 PathProgramCache]: Analyzing trace with hash -2137640212, now seen corresponding path program 4 times [2022-12-14 12:26:52,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:52,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8556583] [2022-12-14 12:26:52,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:52,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3059 backedges. 0 proven. 3036 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 12:26:53,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:53,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8556583] [2022-12-14 12:26:53,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8556583] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:26:53,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499971249] [2022-12-14 12:26:53,338 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:26:53,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:26:53,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:26:53,339 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:26:53,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 12:26:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:53,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 12:26:53,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:26:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3059 backedges. 0 proven. 3036 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 12:26:53,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:26:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3059 backedges. 0 proven. 3036 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-14 12:26:54,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499971249] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:26:54,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [393835497] [2022-12-14 12:26:54,154 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 12:26:54,154 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:26:54,154 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:26:54,154 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:26:54,155 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:26:54,324 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:26:55,396 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4265#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 12:26:55,396 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:26:55,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:26:55,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-12-14 12:26:55,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957042294] [2022-12-14 12:26:55,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:26:55,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-14 12:26:55,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:26:55,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-14 12:26:55,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1159, Invalid=1921, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 12:26:55,399 INFO L87 Difference]: Start difference. First operand 232 states and 255 transitions. Second operand has 48 states, 47 states have (on average 9.829787234042554) internal successors, (462), 47 states have internal predecessors, (462), 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) [2022-12-14 12:26:55,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:26:55,576 INFO L93 Difference]: Finished difference Result 473 states and 543 transitions. [2022-12-14 12:26:55,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 12:26:55,577 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 9.829787234042554) internal successors, (462), 47 states have internal predecessors, (462), 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 231 [2022-12-14 12:26:55,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:26:55,581 INFO L225 Difference]: With dead ends: 473 [2022-12-14 12:26:55,581 INFO L226 Difference]: Without dead ends: 472 [2022-12-14 12:26:55,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 637 SyntacticMatches, 23 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2113 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1159, Invalid=1921, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 12:26:55,583 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:26:55,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 330 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:26:55,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-12-14 12:26:55,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2022-12-14 12:26:55,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 471 states have (on average 1.1019108280254777) internal successors, (519), 471 states have internal predecessors, (519), 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) [2022-12-14 12:26:55,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 519 transitions. [2022-12-14 12:26:55,603 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 519 transitions. Word has length 231 [2022-12-14 12:26:55,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:26:55,603 INFO L495 AbstractCegarLoop]: Abstraction has 472 states and 519 transitions. [2022-12-14 12:26:55,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 9.829787234042554) internal successors, (462), 47 states have internal predecessors, (462), 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) [2022-12-14 12:26:55,604 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 519 transitions. [2022-12-14 12:26:55,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2022-12-14 12:26:55,609 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:26:55,610 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 47, 47, 46, 1, 1] [2022-12-14 12:26:55,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-14 12:26:55,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 12:26:55,812 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:26:55,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:26:55,813 INFO L85 PathProgramCache]: Analyzing trace with hash -24746996, now seen corresponding path program 5 times [2022-12-14 12:26:55,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:26:55,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83813656] [2022-12-14 12:26:55,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:26:55,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:26:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:26:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13019 backedges. 0 proven. 12972 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 12:26:57,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:26:57,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83813656] [2022-12-14 12:26:57,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83813656] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:26:57,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806369259] [2022-12-14 12:26:57,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:26:57,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:26:57,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:26:57,851 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:26:57,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 12:26:58,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 59 check-sat command(s) [2022-12-14 12:26:58,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:26:58,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 946 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 12:26:58,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:26:58,410 INFO L134 CoverageAnalysis]: Checked inductivity of 13019 backedges. 0 proven. 12972 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 12:26:58,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:27:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 13019 backedges. 0 proven. 12972 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-14 12:27:00,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806369259] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:27:00,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1355946019] [2022-12-14 12:27:00,319 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 12:27:00,319 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:27:00,319 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:27:00,319 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:27:00,319 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:27:00,477 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:27:02,413 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8416#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 12:27:02,414 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:27:02,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:27:02,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-12-14 12:27:02,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162930575] [2022-12-14 12:27:02,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:27:02,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-12-14 12:27:02,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:27:02,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-12-14 12:27:02,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4591, Invalid=6121, Unknown=0, NotChecked=0, Total=10712 [2022-12-14 12:27:02,418 INFO L87 Difference]: Start difference. First operand 472 states and 519 transitions. Second operand has 96 states, 95 states have (on average 9.91578947368421) internal successors, (942), 95 states have internal predecessors, (942), 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) [2022-12-14 12:27:02,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:27:02,781 INFO L93 Difference]: Finished difference Result 953 states and 1095 transitions. [2022-12-14 12:27:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-14 12:27:02,781 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 9.91578947368421) internal successors, (942), 95 states have internal predecessors, (942), 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 471 [2022-12-14 12:27:02,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:27:02,784 INFO L225 Difference]: With dead ends: 953 [2022-12-14 12:27:02,784 INFO L226 Difference]: Without dead ends: 952 [2022-12-14 12:27:02,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1458 GetRequests, 1309 SyntacticMatches, 47 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7705 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4591, Invalid=6121, Unknown=0, NotChecked=0, Total=10712 [2022-12-14 12:27:02,786 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:27:02,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 666 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:27:02,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2022-12-14 12:27:02,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 952. [2022-12-14 12:27:02,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 951 states have (on average 1.1009463722397477) internal successors, (1047), 951 states have internal predecessors, (1047), 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) [2022-12-14 12:27:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1047 transitions. [2022-12-14 12:27:02,814 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1047 transitions. Word has length 471 [2022-12-14 12:27:02,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:27:02,814 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1047 transitions. [2022-12-14 12:27:02,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 9.91578947368421) internal successors, (942), 95 states have internal predecessors, (942), 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) [2022-12-14 12:27:02,815 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1047 transitions. [2022-12-14 12:27:02,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2022-12-14 12:27:02,834 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:27:02,834 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 95, 95, 95, 95, 95, 94, 1, 1] [2022-12-14 12:27:02,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 12:27:03,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 12:27:03,036 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:27:03,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:27:03,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1324513716, now seen corresponding path program 6 times [2022-12-14 12:27:03,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:27:03,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836721865] [2022-12-14 12:27:03,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:27:03,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:27:03,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:27:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 53675 backedges. 0 proven. 53580 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-12-14 12:27:10,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:27:10,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836721865] [2022-12-14 12:27:10,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836721865] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:27:10,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255361063] [2022-12-14 12:27:10,840 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:27:10,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:27:10,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:27:10,841 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:27:10,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 12:27:11,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:27:11,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:27:11,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 12:27:11,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:27:11,697 INFO L134 CoverageAnalysis]: Checked inductivity of 53675 backedges. 0 proven. 53580 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-12-14 12:27:11,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:27:18,636 INFO L134 CoverageAnalysis]: Checked inductivity of 53675 backedges. 0 proven. 53580 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-12-14 12:27:18,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255361063] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:27:18,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1966678445] [2022-12-14 12:27:18,639 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 12:27:18,639 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:27:18,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:27:18,639 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:27:18,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:27:18,816 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:27:25,065 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16791#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 12:27:25,065 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:27:25,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:27:25,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-12-14 12:27:25,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017730629] [2022-12-14 12:27:25,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:27:25,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-12-14 12:27:25,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:27:25,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-12-14 12:27:25,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18367, Invalid=21433, Unknown=0, NotChecked=0, Total=39800 [2022-12-14 12:27:25,082 INFO L87 Difference]: Start difference. First operand 952 states and 1047 transitions. Second operand has 192 states, 191 states have (on average 9.958115183246074) internal successors, (1902), 191 states have internal predecessors, (1902), 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) [2022-12-14 12:27:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:27:26,895 INFO L93 Difference]: Finished difference Result 1913 states and 2199 transitions. [2022-12-14 12:27:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-14 12:27:26,897 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 9.958115183246074) internal successors, (1902), 191 states have internal predecessors, (1902), 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 951 [2022-12-14 12:27:26,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:27:26,900 INFO L225 Difference]: With dead ends: 1913 [2022-12-14 12:27:26,901 INFO L226 Difference]: Without dead ends: 1912 [2022-12-14 12:27:26,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2946 GetRequests, 2653 SyntacticMatches, 95 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29160 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=18367, Invalid=21433, Unknown=0, NotChecked=0, Total=39800 [2022-12-14 12:27:26,904 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:27:26,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1338 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 12:27:26,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2022-12-14 12:27:26,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1912. [2022-12-14 12:27:26,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1912 states, 1911 states have (on average 1.1004709576138147) internal successors, (2103), 1911 states have internal predecessors, (2103), 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) [2022-12-14 12:27:26,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1912 states to 1912 states and 2103 transitions. [2022-12-14 12:27:26,987 INFO L78 Accepts]: Start accepts. Automaton has 1912 states and 2103 transitions. Word has length 951 [2022-12-14 12:27:26,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:27:26,988 INFO L495 AbstractCegarLoop]: Abstraction has 1912 states and 2103 transitions. [2022-12-14 12:27:26,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 9.958115183246074) internal successors, (1902), 191 states have internal predecessors, (1902), 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) [2022-12-14 12:27:26,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1912 states and 2103 transitions. [2022-12-14 12:27:27,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1912 [2022-12-14 12:27:27,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:27:27,017 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 191, 191, 191, 191, 191, 190, 1, 1] [2022-12-14 12:27:27,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 12:27:27,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 12:27:27,218 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:27:27,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:27:27,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1857473228, now seen corresponding path program 7 times [2022-12-14 12:27:27,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:27:27,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308945113] [2022-12-14 12:27:27,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:27:27,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:27:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:11,795 INFO L134 CoverageAnalysis]: Checked inductivity of 217931 backedges. 0 proven. 217740 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-12-14 12:28:11,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:28:11,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308945113] [2022-12-14 12:28:11,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308945113] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:28:11,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127725313] [2022-12-14 12:28:11,796 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:28:11,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:28:11,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:28:11,797 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:28:11,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 12:28:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:28:12,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 3826 conjuncts, 192 conjunts are in the unsatisfiable core [2022-12-14 12:28:12,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:28:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 217931 backedges. 0 proven. 217740 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-12-14 12:28:13,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:28:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 217931 backedges. 0 proven. 217740 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2022-12-14 12:28:41,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127725313] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:28:41,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [691401379] [2022-12-14 12:28:41,027 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 12:28:41,027 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:28:41,027 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:28:41,028 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:28:41,028 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:28:41,182 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:29:04,204 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33614#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 12:29:04,204 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:29:04,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:29:04,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-12-14 12:29:04,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490983182] [2022-12-14 12:29:04,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:29:04,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-12-14 12:29:04,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:29:04,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-12-14 12:29:04,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73573, Invalid=80483, Unknown=0, NotChecked=0, Total=154056 [2022-12-14 12:29:04,244 INFO L87 Difference]: Start difference. First operand 1912 states and 2103 transitions. Second operand has 384 states, 383 states have (on average 9.97911227154047) internal successors, (3822), 383 states have internal predecessors, (3822), 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) [2022-12-14 12:29:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:29:15,798 INFO L93 Difference]: Finished difference Result 3833 states and 4407 transitions. [2022-12-14 12:29:15,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-12-14 12:29:15,800 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 9.97911227154047) internal successors, (3822), 383 states have internal predecessors, (3822), 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 1911 [2022-12-14 12:29:15,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:29:15,807 INFO L225 Difference]: With dead ends: 3833 [2022-12-14 12:29:15,807 INFO L226 Difference]: Without dead ends: 3832 [2022-12-14 12:29:15,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5922 GetRequests, 5340 SyntacticMatches, 191 SemanticMatches, 391 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114601 ImplicationChecksByTransitivity, 57.3s TimeCoverageRelationStatistics Valid=73573, Invalid=80483, Unknown=0, NotChecked=0, Total=154056 [2022-12-14 12:29:15,813 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2682 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:29:15,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2682 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 12:29:15,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2022-12-14 12:29:15,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 3832. [2022-12-14 12:29:15,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3832 states, 3831 states have (on average 1.100234925606891) internal successors, (4215), 3831 states have internal predecessors, (4215), 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) [2022-12-14 12:29:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 4215 transitions. [2022-12-14 12:29:15,933 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 4215 transitions. Word has length 1911 [2022-12-14 12:29:15,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:29:15,934 INFO L495 AbstractCegarLoop]: Abstraction has 3832 states and 4215 transitions. [2022-12-14 12:29:15,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 9.97911227154047) internal successors, (3822), 383 states have internal predecessors, (3822), 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) [2022-12-14 12:29:15,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 4215 transitions. [2022-12-14 12:29:15,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3832 [2022-12-14 12:29:15,993 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:29:15,993 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 383, 383, 383, 383, 383, 383, 382, 1, 1] [2022-12-14 12:29:16,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-14 12:29:16,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 12:29:16,194 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:29:16,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:29:16,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1014322124, now seen corresponding path program 8 times [2022-12-14 12:29:16,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:29:16,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898051594] [2022-12-14 12:29:16,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:29:16,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:29:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:34:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 878219 backedges. 0 proven. 877836 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-12-14 12:34:20,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:34:20,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898051594] [2022-12-14 12:34:20,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898051594] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:34:20,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373201676] [2022-12-14 12:34:20,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:34:20,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:34:20,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:34:20,082 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:34:20,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 12:34:28,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 479 check-sat command(s) [2022-12-14 12:34:28,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:34:28,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 7666 conjuncts, 384 conjunts are in the unsatisfiable core [2022-12-14 12:34:28,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:34:31,542 INFO L134 CoverageAnalysis]: Checked inductivity of 878219 backedges. 0 proven. 877836 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-12-14 12:34:31,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:36:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 878219 backedges. 0 proven. 877836 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-12-14 12:36:23,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373201676] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:36:23,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [434505055] [2022-12-14 12:36:23,023 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 12:36:23,023 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:36:23,023 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:36:23,023 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:36:23,023 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:36:23,210 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:37:52,069 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '67334#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) (= 0 |ULTIMATE.start_main_~ytmp~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~res~0#1|))' at error location [2022-12-14 12:37:52,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:37:52,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:37:52,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 766 [2022-12-14 12:37:52,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628059106] [2022-12-14 12:37:52,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:37:52,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-12-14 12:37:52,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:37:52,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-12-14 12:37:52,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294565, Invalid=308387, Unknown=0, NotChecked=0, Total=602952 [2022-12-14 12:37:52,154 INFO L87 Difference]: Start difference. First operand 3832 states and 4215 transitions. Second operand has 768 states, 767 states have (on average 9.989569752281616) internal successors, (7662), 767 states have internal predecessors, (7662), 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) [2022-12-14 12:39:26,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:39:26,370 INFO L93 Difference]: Finished difference Result 7673 states and 8823 transitions. [2022-12-14 12:39:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2022-12-14 12:39:26,372 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 767 states have (on average 9.989569752281616) internal successors, (7662), 767 states have internal predecessors, (7662), 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 3831 [2022-12-14 12:39:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:39:26,394 INFO L225 Difference]: With dead ends: 7673 [2022-12-14 12:39:26,394 INFO L226 Difference]: Without dead ends: 7672 [2022-12-14 12:39:26,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11874 GetRequests, 10716 SyntacticMatches, 383 SemanticMatches, 775 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450409 ImplicationChecksByTransitivity, 230.8s TimeCoverageRelationStatistics Valid=294565, Invalid=308387, Unknown=0, NotChecked=0, Total=602952 [2022-12-14 12:39:26,436 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 5362 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5370 SdHoareTripleChecker+Invalid, 2309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 12:39:26,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5370 Invalid, 2309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 12:39:26,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7672 states. [2022-12-14 12:39:26,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7672 to 7672. [2022-12-14 12:39:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7672 states, 7671 states have (on average 1.100117324990223) internal successors, (8439), 7671 states have internal predecessors, (8439), 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) [2022-12-14 12:39:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7672 states to 7672 states and 8439 transitions. [2022-12-14 12:39:26,684 INFO L78 Accepts]: Start accepts. Automaton has 7672 states and 8439 transitions. Word has length 3831 [2022-12-14 12:39:26,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:39:26,686 INFO L495 AbstractCegarLoop]: Abstraction has 7672 states and 8439 transitions. [2022-12-14 12:39:26,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 767 states have (on average 9.989569752281616) internal successors, (7662), 767 states have internal predecessors, (7662), 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) [2022-12-14 12:39:26,688 INFO L276 IsEmpty]: Start isEmpty. Operand 7672 states and 8439 transitions. [2022-12-14 12:39:26,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7672 [2022-12-14 12:39:26,926 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:39:26,927 INFO L195 NwaCegarLoop]: trace histogram [767, 767, 767, 767, 767, 767, 767, 767, 767, 766, 1, 1] [2022-12-14 12:39:26,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 12:39:27,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3496beec-d573-44a0-a6cc-b522aeac0ce1/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 12:39:27,129 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-12-14 12:39:27,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:39:27,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1583192628, now seen corresponding path program 9 times [2022-12-14 12:39:27,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:39:27,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024268442] [2022-12-14 12:39:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:39:27,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:39:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat