./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.14.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.14.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba --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 e0029e4ef6d93314dd28a1b067e9a0f7a5ca34b8281e95ccf7b3ad64c7537db6 --- 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-b5237d8 [2022-11-22 02:46:41,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:46:41,162 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:46:41,201 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:46:41,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:46:41,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:46:41,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:46:41,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:46:41,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:46:41,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:46:41,225 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:46:41,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:46:41,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:46:41,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:46:41,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:46:41,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:46:41,239 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:46:41,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:46:41,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:46:41,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:46:41,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:46:41,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:46:41,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:46:41,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:46:41,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:46:41,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:46:41,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:46:41,265 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:46:41,266 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:46:41,267 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:46:41,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:46:41,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:46:41,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:46:41,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:46:41,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:46:41,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:46:41,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:46:41,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:46:41,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:46:41,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:46:41,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:46:41,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-22 02:46:41,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:46:41,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:46:41,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:46:41,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:46:41,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:46:41,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:46:41,315 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:46:41,315 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:46:41,316 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:46:41,316 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:46:41,316 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:46:41,316 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:46:41,317 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:46:41,317 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:46:41,317 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:46:41,317 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:46:41,317 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:46:41,318 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:46:41,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:46:41,319 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:46:41,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:46:41,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:46:41,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:46:41,320 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:46:41,320 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:46:41,321 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-22 02:46:41,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:46:41,321 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:46:41,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:46:41,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:46:41,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:46:41,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:46:41,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:46:41,324 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:46:41,324 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:46:41,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:46:41,325 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:46:41,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:46:41,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:46:41,326 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:46:41,326 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_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0029e4ef6d93314dd28a1b067e9a0f7a5ca34b8281e95ccf7b3ad64c7537db6 [2022-11-22 02:46:41,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:46:41,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:46:41,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:46:41,660 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:46:41,661 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:46:41,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/termination-restricted-15/b.14.c [2022-11-22 02:46:44,827 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:46:45,068 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:46:45,068 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/sv-benchmarks/c/termination-restricted-15/b.14.c [2022-11-22 02:46:45,075 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/data/d9100cfe2/44139ca8fb134839a3a68c21c699a7fb/FLAG5bb900c05 [2022-11-22 02:46:45,089 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/data/d9100cfe2/44139ca8fb134839a3a68c21c699a7fb [2022-11-22 02:46:45,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:46:45,093 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:46:45,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:46:45,095 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:46:45,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:46:45,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:46:45" (1/1) ... [2022-11-22 02:46:45,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f06d7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:45, skipping insertion in model container [2022-11-22 02:46:45,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:46:45" (1/1) ... [2022-11-22 02:46:45,109 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:46:45,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:46:45,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:46:45,296 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:46:45,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:46:45,325 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:46:45,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:45 WrapperNode [2022-11-22 02:46:45,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:46:45,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:46:45,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:46:45,329 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:46:45,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:45" (1/1) ... [2022-11-22 02:46:45,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:45" (1/1) ... [2022-11-22 02:46:45,360 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2022-11-22 02:46:45,361 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:46:45,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:46:45,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:46:45,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:46:45,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:45" (1/1) ... [2022-11-22 02:46:45,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:45" (1/1) ... [2022-11-22 02:46:45,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:45" (1/1) ... [2022-11-22 02:46:45,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:45" (1/1) ... [2022-11-22 02:46:45,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:45" (1/1) ... [2022-11-22 02:46:45,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:45" (1/1) ... [2022-11-22 02:46:45,385 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:45" (1/1) ... [2022-11-22 02:46:45,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:45" (1/1) ... [2022-11-22 02:46:45,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:46:45,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:46:45,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:46:45,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:46:45,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:45" (1/1) ... [2022-11-22 02:46:45,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:46:45,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:46:45,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:46:45,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:46:45,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:46:45,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:46:45,560 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:46:45,562 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:46:45,698 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:46:45,718 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:46:45,719 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 02:46:45,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:46:45 BoogieIcfgContainer [2022-11-22 02:46:45,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:46:45,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:46:45,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:46:45,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:46:45,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:46:45" (1/3) ... [2022-11-22 02:46:45,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720b1236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:46:45, skipping insertion in model container [2022-11-22 02:46:45,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:46:45" (2/3) ... [2022-11-22 02:46:45,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@720b1236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:46:45, skipping insertion in model container [2022-11-22 02:46:45,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:46:45" (3/3) ... [2022-11-22 02:46:45,732 INFO L112 eAbstractionObserver]: Analyzing ICFG b.14.c [2022-11-22 02:46:45,752 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:46:45,753 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-22 02:46:45,803 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:46:45,810 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;@5cc6db61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:46:45,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-22 02:46:45,814 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:45,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:46:45,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:45,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:46:45,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:46:45,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:45,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2245537, now seen corresponding path program 1 times [2022-11-22 02:46:45,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:45,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730613706] [2022-11-22 02:46:45,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:45,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:45,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:46,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:46,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:46,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730613706] [2022-11-22 02:46:46,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730613706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:46,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:46,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:46:46,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028278337] [2022-11-22 02:46:46,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:46,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:46:46,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:46,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:46:46,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:46,108 INFO L87 Difference]: Start difference. First operand has 16 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:46,151 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2022-11-22 02:46:46,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:46:46,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 02:46:46,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:46,161 INFO L225 Difference]: With dead ends: 16 [2022-11-22 02:46:46,162 INFO L226 Difference]: Without dead ends: 14 [2022-11-22 02:46:46,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:46,168 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:46,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:46:46,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-22 02:46:46,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-22 02:46:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-22 02:46:46,201 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2022-11-22 02:46:46,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:46,202 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-22 02:46:46,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,202 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-22 02:46:46,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-22 02:46:46,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:46,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-22 02:46:46,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:46:46,204 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:46:46,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:46,205 INFO L85 PathProgramCache]: Analyzing trace with hash 69611701, now seen corresponding path program 1 times [2022-11-22 02:46:46,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:46,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498045955] [2022-11-22 02:46:46,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:46,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:46,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:46,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:46,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498045955] [2022-11-22 02:46:46,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498045955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:46,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:46,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:46:46,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21644445] [2022-11-22 02:46:46,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:46,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:46:46,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:46,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:46:46,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:46,256 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:46,293 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-11-22 02:46:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:46:46,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-22 02:46:46,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:46,295 INFO L225 Difference]: With dead ends: 19 [2022-11-22 02:46:46,295 INFO L226 Difference]: Without dead ends: 18 [2022-11-22 02:46:46,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:46,297 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:46,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:46:46,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-22 02:46:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-11-22 02:46:46,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-22 02:46:46,303 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 5 [2022-11-22 02:46:46,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:46,303 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-22 02:46:46,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-22 02:46:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:46:46,304 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:46,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 02:46:46,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:46:46,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:46:46,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:46,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2137004509, now seen corresponding path program 1 times [2022-11-22 02:46:46,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:46,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359497888] [2022-11-22 02:46:46,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:46,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:46,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:46,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359497888] [2022-11-22 02:46:46,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359497888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:46,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:46,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:46:46,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400739602] [2022-11-22 02:46:46,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:46,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:46:46,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:46,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:46:46,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:46,395 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:46,428 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2022-11-22 02:46:46,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:46:46,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 02:46:46,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:46,432 INFO L225 Difference]: With dead ends: 17 [2022-11-22 02:46:46,432 INFO L226 Difference]: Without dead ends: 16 [2022-11-22 02:46:46,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:46,434 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:46,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 7 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:46:46,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-22 02:46:46,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-22 02:46:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 15 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) [2022-11-22 02:46:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-11-22 02:46:46,440 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2022-11-22 02:46:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:46,441 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-11-22 02:46:46,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-11-22 02:46:46,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-22 02:46:46,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:46,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:46,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:46:46,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:46:46,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:46,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1822630281, now seen corresponding path program 1 times [2022-11-22 02:46:46,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:46,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166292597] [2022-11-22 02:46:46,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:46,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:46,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:46,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:46,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:46,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166292597] [2022-11-22 02:46:46,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166292597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:46,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:46,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:46:46,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837590021] [2022-11-22 02:46:46,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:46,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:46:46,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:46,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:46:46,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:46,520 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:46,540 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2022-11-22 02:46:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:46:46,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-22 02:46:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:46,541 INFO L225 Difference]: With dead ends: 30 [2022-11-22 02:46:46,542 INFO L226 Difference]: Without dead ends: 15 [2022-11-22 02:46:46,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:46,544 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:46,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:46:46,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-22 02:46:46,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-22 02:46:46,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-22 02:46:46,558 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2022-11-22 02:46:46,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:46,559 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-22 02:46:46,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,559 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-22 02:46:46,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-22 02:46:46,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:46,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:46,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:46:46,561 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:46:46,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:46,562 INFO L85 PathProgramCache]: Analyzing trace with hash -666963803, now seen corresponding path program 1 times [2022-11-22 02:46:46,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:46,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609943847] [2022-11-22 02:46:46,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:46,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:46,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:46,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:46,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:46,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609943847] [2022-11-22 02:46:46,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609943847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:46,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:46,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:46:46,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453704554] [2022-11-22 02:46:46,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:46,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:46:46,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:46,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:46:46,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:46,644 INFO L87 Difference]: Start difference. First operand 15 states and 16 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) [2022-11-22 02:46:46,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:46,664 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-11-22 02:46:46,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:46:46,664 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 [2022-11-22 02:46:46,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:46,665 INFO L225 Difference]: With dead ends: 24 [2022-11-22 02:46:46,665 INFO L226 Difference]: Without dead ends: 23 [2022-11-22 02:46:46,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:46,667 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:46,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:46:46,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-22 02:46:46,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-11-22 02:46:46,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-22 02:46:46,674 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 8 [2022-11-22 02:46:46,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:46,674 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-22 02:46:46,675 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) [2022-11-22 02:46:46,675 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-22 02:46:46,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-22 02:46:46,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:46,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:46,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:46:46,676 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:46:46,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:46,677 INFO L85 PathProgramCache]: Analyzing trace with hash 798958649, now seen corresponding path program 1 times [2022-11-22 02:46:46,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:46,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430026008] [2022-11-22 02:46:46,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:46,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:46,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:46,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430026008] [2022-11-22 02:46:46,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430026008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:46:46,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:46:46,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-22 02:46:46,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121227284] [2022-11-22 02:46:46,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:46:46,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:46:46,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:46,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:46:46,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:46,721 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:46,733 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-22 02:46:46,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:46:46,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-22 02:46:46,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:46,734 INFO L225 Difference]: With dead ends: 22 [2022-11-22 02:46:46,734 INFO L226 Difference]: Without dead ends: 21 [2022-11-22 02:46:46,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:46:46,736 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:46,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:46:46,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-22 02:46:46,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-22 02:46:46,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-22 02:46:46,743 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 9 [2022-11-22 02:46:46,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:46,743 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-22 02:46:46,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:46,744 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-22 02:46:46,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 02:46:46,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:46,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:46:46,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:46:46,745 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:46:46,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:46,746 INFO L85 PathProgramCache]: Analyzing trace with hash -931592357, now seen corresponding path program 1 times [2022-11-22 02:46:46,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:46,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537053083] [2022-11-22 02:46:46,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:46,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:46,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:46,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537053083] [2022-11-22 02:46:46,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537053083] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:46:46,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886959554] [2022-11-22 02:46:46,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:46,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:46,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:46:46,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:46:46,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:46:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:46,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:46:46,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:46:46,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:46,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:46:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:46,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886959554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:46:46,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1933799720] [2022-11-22 02:46:47,006 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:46:47,006 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:46:47,010 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:46:47,016 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:46:47,016 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:46:47,347 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:46:47,675 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '388#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_~x~0#1|) 0))' at error location [2022-11-22 02:46:47,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:46:47,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:46:47,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-22 02:46:47,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193130274] [2022-11-22 02:46:47,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:46:47,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:46:47,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:47,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:46:47,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:46:47,678 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:47,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:47,722 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2022-11-22 02:46:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:46:47,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-22 02:46:47,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:47,725 INFO L225 Difference]: With dead ends: 49 [2022-11-22 02:46:47,725 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 02:46:47,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:46:47,727 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:47,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 33 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:46:47,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 02:46:47,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2022-11-22 02:46:47,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:47,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-11-22 02:46:47,736 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 12 [2022-11-22 02:46:47,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:47,737 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-11-22 02:46:47,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:47,737 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-11-22 02:46:47,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 02:46:47,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:47,738 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-22 02:46:47,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:46:47,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 02:46:47,944 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:46:47,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:47,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1010815039, now seen corresponding path program 1 times [2022-11-22 02:46:47,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:47,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442060117] [2022-11-22 02:46:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:47,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:48,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:48,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:48,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442060117] [2022-11-22 02:46:48,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442060117] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:46:48,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412653373] [2022-11-22 02:46:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:48,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:48,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:46:48,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:46:48,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:46:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:48,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:46:48,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:46:48,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:48,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:46:48,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:48,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412653373] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:46:48,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1685169483] [2022-11-22 02:46:48,202 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:46:48,202 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:46:48,203 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:46:48,203 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:46:48,204 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:46:48,414 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:46:48,715 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '596#(and (<= |ULTIMATE.start_main_~y~0#1| 2147483646) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (< 2147483646 |ULTIMATE.start_main_~c~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2022-11-22 02:46:48,715 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:46:48,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:46:48,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-22 02:46:48,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992496457] [2022-11-22 02:46:48,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:46:48,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:46:48,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:48,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:46:48,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:46:48,717 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:48,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:48,776 INFO L93 Difference]: Finished difference Result 106 states and 127 transitions. [2022-11-22 02:46:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:46:48,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-22 02:46:48,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:48,778 INFO L225 Difference]: With dead ends: 106 [2022-11-22 02:46:48,781 INFO L226 Difference]: Without dead ends: 105 [2022-11-22 02:46:48,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:46:48,783 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:48,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:46:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-22 02:46:48,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-22 02:46:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 103 states have (on average 1.145631067961165) internal successors, (118), 104 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 118 transitions. [2022-11-22 02:46:48,806 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 118 transitions. Word has length 15 [2022-11-22 02:46:48,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:48,807 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 118 transitions. [2022-11-22 02:46:48,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 118 transitions. [2022-11-22 02:46:48,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-22 02:46:48,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:48,810 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1] [2022-11-22 02:46:48,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:46:49,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:49,015 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:46:49,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:49,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2130555701, now seen corresponding path program 2 times [2022-11-22 02:46:49,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:49,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069671018] [2022-11-22 02:46:49,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:49,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 02:46:49,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:49,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069671018] [2022-11-22 02:46:49,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069671018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:46:49,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901062885] [2022-11-22 02:46:49,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:46:49,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:49,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:46:49,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:46:49,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:46:49,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 02:46:49,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:46:49,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 02:46:49,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:46:49,289 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-22 02:46:49,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:46:49,547 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:49,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901062885] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:46:49,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1005709624] [2022-11-22 02:46:49,551 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:46:49,552 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:46:49,552 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:46:49,552 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:46:49,552 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:46:49,695 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:46:50,151 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1063#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_~x~0#1|) 0))' at error location [2022-11-22 02:46:50,151 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:46:50,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:46:50,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 11] total 15 [2022-11-22 02:46:50,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586559043] [2022-11-22 02:46:50,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:46:50,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 02:46:50,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:50,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 02:46:50,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:46:50,154 INFO L87 Difference]: Start difference. First operand 105 states and 118 transitions. Second operand has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:50,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:50,230 INFO L93 Difference]: Finished difference Result 105 states and 118 transitions. [2022-11-22 02:46:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:46:50,231 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 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 33 [2022-11-22 02:46:50,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:50,232 INFO L225 Difference]: With dead ends: 105 [2022-11-22 02:46:50,236 INFO L226 Difference]: Without dead ends: 104 [2022-11-22 02:46:50,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 80 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2022-11-22 02:46:50,237 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 48 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:50,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 7 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:46:50,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-11-22 02:46:50,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 45. [2022-11-22 02:46:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-11-22 02:46:50,254 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 33 [2022-11-22 02:46:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:50,254 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-11-22 02:46:50,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.466666666666667) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:50,255 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-11-22 02:46:50,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-22 02:46:50,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:50,256 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2022-11-22 02:46:50,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:46:50,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:50,462 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:46:50,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:50,462 INFO L85 PathProgramCache]: Analyzing trace with hash 358243877, now seen corresponding path program 2 times [2022-11-22 02:46:50,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:50,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309367711] [2022-11-22 02:46:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:50,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:50,558 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:50,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:50,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309367711] [2022-11-22 02:46:50,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309367711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:46:50,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306585499] [2022-11-22 02:46:50,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:46:50,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:50,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:46:50,560 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:46:50,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:46:50,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 02:46:50,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:46:50,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:46:50,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:46:50,679 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:50,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:46:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:50,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306585499] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:46:50,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [243366777] [2022-11-22 02:46:50,803 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:46:50,803 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:46:50,804 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:46:50,804 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:46:50,804 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:46:50,934 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:46:51,274 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1483#(and (<= |ULTIMATE.start_main_~y~0#1| 2147483646) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (< 2147483646 |ULTIMATE.start_main_~c~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2022-11-22 02:46:51,274 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:46:51,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:46:51,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-22 02:46:51,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665871801] [2022-11-22 02:46:51,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:46:51,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 02:46:51,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:51,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 02:46:51,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:46:51,277 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:51,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:51,356 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2022-11-22 02:46:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:46:51,357 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 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 36 [2022-11-22 02:46:51,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:51,358 INFO L225 Difference]: With dead ends: 100 [2022-11-22 02:46:51,358 INFO L226 Difference]: Without dead ends: 99 [2022-11-22 02:46:51,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 88 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:46:51,360 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 51 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:51,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 67 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:46:51,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-22 02:46:51,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-11-22 02:46:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.1122448979591837) internal successors, (109), 98 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:51,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2022-11-22 02:46:51,377 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 36 [2022-11-22 02:46:51,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:51,377 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2022-11-22 02:46:51,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:51,377 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2022-11-22 02:46:51,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-22 02:46:51,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:51,379 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 1, 1, 1] [2022-11-22 02:46:51,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:46:51,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 02:46:51,585 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:46:51,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:51,586 INFO L85 PathProgramCache]: Analyzing trace with hash 802384485, now seen corresponding path program 3 times [2022-11-22 02:46:51,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:51,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814543210] [2022-11-22 02:46:51,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:51,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:51,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:51,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814543210] [2022-11-22 02:46:51,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814543210] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:46:51,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743865082] [2022-11-22 02:46:51,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:46:51,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:51,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:46:51,872 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:46:51,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:46:51,935 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:46:51,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:46:51,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 02:46:51,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:46:52,058 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:52,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:46:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 375 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:52,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743865082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:46:52,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [946231037] [2022-11-22 02:46:52,408 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:46:52,408 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:46:52,408 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:46:52,409 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:46:52,409 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:46:52,529 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:46:53,068 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2240#(and (<= |ULTIMATE.start_main_~y~0#1| 2147483646) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (< 2147483646 |ULTIMATE.start_main_~c~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2022-11-22 02:46:53,068 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:46:53,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:46:53,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-22 02:46:53,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612780883] [2022-11-22 02:46:53,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:46:53,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-22 02:46:53,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:53,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-22 02:46:53,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=673, Unknown=0, NotChecked=0, Total=992 [2022-11-22 02:46:53,070 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand has 24 states, 23 states have (on average 6.782608695652174) internal successors, (156), 23 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:53,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:53,209 INFO L93 Difference]: Finished difference Result 208 states and 241 transitions. [2022-11-22 02:46:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 02:46:53,210 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.782608695652174) internal successors, (156), 23 states have internal predecessors, (156), 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 78 [2022-11-22 02:46:53,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:53,211 INFO L225 Difference]: With dead ends: 208 [2022-11-22 02:46:53,212 INFO L226 Difference]: Without dead ends: 207 [2022-11-22 02:46:53,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 202 SyntacticMatches, 11 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=319, Invalid=673, Unknown=0, NotChecked=0, Total=992 [2022-11-22 02:46:53,213 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 153 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:53,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 139 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:46:53,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-22 02:46:53,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-11-22 02:46:53,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.1116504854368932) internal successors, (229), 206 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:53,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 229 transitions. [2022-11-22 02:46:53,264 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 229 transitions. Word has length 78 [2022-11-22 02:46:53,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:53,264 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 229 transitions. [2022-11-22 02:46:53,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.782608695652174) internal successors, (156), 23 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:53,265 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 229 transitions. [2022-11-22 02:46:53,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-22 02:46:53,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:53,267 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 22, 1, 1, 1] [2022-11-22 02:46:53,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:46:53,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:53,480 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:46:53,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:53,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1892651749, now seen corresponding path program 4 times [2022-11-22 02:46:53,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:53,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216727907] [2022-11-22 02:46:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:53,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 0 proven. 1749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:54,308 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:46:54,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216727907] [2022-11-22 02:46:54,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216727907] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:46:54,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960897925] [2022-11-22 02:46:54,309 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 02:46:54,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:46:54,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:46:54,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:46:54,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:46:54,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:46:54,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 02:46:54,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:46:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 0 proven. 1749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:54,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:46:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1749 backedges. 0 proven. 1749 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:46:55,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960897925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:46:55,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [544438440] [2022-11-22 02:46:55,703 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:46:55,703 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:46:55,703 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:46:55,703 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:46:55,704 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:46:55,793 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:46:56,959 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3813#(and (<= |ULTIMATE.start_main_~y~0#1| 2147483646) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (< 2147483646 |ULTIMATE.start_main_~c~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2022-11-22 02:46:56,960 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:46:56,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:46:56,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-22 02:46:56,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114763215] [2022-11-22 02:46:56,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:46:56,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-22 02:46:56,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:46:56,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-22 02:46:56,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1195, Invalid=1885, Unknown=0, NotChecked=0, Total=3080 [2022-11-22 02:46:56,963 INFO L87 Difference]: Start difference. First operand 207 states and 229 transitions. Second operand has 48 states, 47 states have (on average 6.8936170212765955) internal successors, (324), 47 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:57,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:46:57,451 INFO L93 Difference]: Finished difference Result 424 states and 493 transitions. [2022-11-22 02:46:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-22 02:46:57,452 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.8936170212765955) internal successors, (324), 47 states have internal predecessors, (324), 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 162 [2022-11-22 02:46:57,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:46:57,457 INFO L225 Difference]: With dead ends: 424 [2022-11-22 02:46:57,457 INFO L226 Difference]: Without dead ends: 423 [2022-11-22 02:46:57,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 430 SyntacticMatches, 23 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2179 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1195, Invalid=1885, Unknown=0, NotChecked=0, Total=3080 [2022-11-22 02:46:57,460 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 283 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:46:57,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 283 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:46:57,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-22 02:46:57,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2022-11-22 02:46:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 1.1113744075829384) internal successors, (469), 422 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 469 transitions. [2022-11-22 02:46:57,512 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 469 transitions. Word has length 162 [2022-11-22 02:46:57,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:46:57,515 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 469 transitions. [2022-11-22 02:46:57,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.8936170212765955) internal successors, (324), 47 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:46:57,515 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 469 transitions. [2022-11-22 02:46:57,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2022-11-22 02:46:57,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:46:57,530 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 47, 47, 46, 46, 1, 1, 1] [2022-11-22 02:46:57,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:46:57,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-22 02:46:57,740 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:46:57,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:46:57,740 INFO L85 PathProgramCache]: Analyzing trace with hash -337632283, now seen corresponding path program 5 times [2022-11-22 02:46:57,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:46:57,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526619444] [2022-11-22 02:46:57,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:46:57,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:46:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:47:00,615 INFO L134 CoverageAnalysis]: Checked inductivity of 7521 backedges. 0 proven. 7521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:47:00,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:47:00,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526619444] [2022-11-22 02:47:00,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526619444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:47:00,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30927710] [2022-11-22 02:47:00,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:47:00,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:47:00,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:47:00,618 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:47:00,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 02:47:00,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-22 02:47:00,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:47:00,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-22 02:47:00,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:47:01,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7521 backedges. 0 proven. 7521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:47:01,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:47:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7521 backedges. 0 proven. 7521 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:47:04,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30927710] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:47:04,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1920579075] [2022-11-22 02:47:04,781 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:47:04,781 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:47:04,781 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:47:04,781 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:47:04,782 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:47:04,869 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:47:07,945 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7018#(and (<= |ULTIMATE.start_main_~y~0#1| 2147483646) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (< 2147483646 |ULTIMATE.start_main_~c~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2022-11-22 02:47:07,946 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:47:07,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:47:07,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-22 02:47:07,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872032603] [2022-11-22 02:47:07,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:47:07,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-22 02:47:07,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:47:07,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-22 02:47:07,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4675, Invalid=6037, Unknown=0, NotChecked=0, Total=10712 [2022-11-22 02:47:07,953 INFO L87 Difference]: Start difference. First operand 423 states and 469 transitions. Second operand has 96 states, 95 states have (on average 6.947368421052632) internal successors, (660), 95 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:47:09,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:47:09,507 INFO L93 Difference]: Finished difference Result 856 states and 997 transitions. [2022-11-22 02:47:09,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-22 02:47:09,508 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.947368421052632) internal successors, (660), 95 states have internal predecessors, (660), 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 330 [2022-11-22 02:47:09,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:47:09,512 INFO L225 Difference]: With dead ends: 856 [2022-11-22 02:47:09,512 INFO L226 Difference]: Without dead ends: 855 [2022-11-22 02:47:09,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 886 SyntacticMatches, 47 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7843 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=4675, Invalid=6037, Unknown=0, NotChecked=0, Total=10712 [2022-11-22 02:47:09,515 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 944 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:47:09,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 571 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:47:09,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-22 02:47:09,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 855. [2022-11-22 02:47:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.1112412177985949) internal successors, (949), 854 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:47:09,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 949 transitions. [2022-11-22 02:47:09,593 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 949 transitions. Word has length 330 [2022-11-22 02:47:09,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:47:09,594 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 949 transitions. [2022-11-22 02:47:09,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.947368421052632) internal successors, (660), 95 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:47:09,595 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 949 transitions. [2022-11-22 02:47:09,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 667 [2022-11-22 02:47:09,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:47:09,612 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 95, 95, 94, 94, 1, 1, 1] [2022-11-22 02:47:09,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:47:09,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-22 02:47:09,819 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:47:09,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:47:09,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1709327845, now seen corresponding path program 6 times [2022-11-22 02:47:09,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:47:09,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961571073] [2022-11-22 02:47:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:09,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:47:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:47:18,778 INFO L134 CoverageAnalysis]: Checked inductivity of 31161 backedges. 0 proven. 31161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:47:18,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:47:18,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961571073] [2022-11-22 02:47:18,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961571073] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:47:18,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609651865] [2022-11-22 02:47:18,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:47:18,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:47:18,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:47:18,781 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:47:18,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 02:47:19,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:47:19,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:47:19,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 1243 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-22 02:47:19,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:47:20,055 INFO L134 CoverageAnalysis]: Checked inductivity of 31161 backedges. 0 proven. 31161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:47:20,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:47:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 31161 backedges. 0 proven. 31161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:47:31,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609651865] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:47:31,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1403900462] [2022-11-22 02:47:31,929 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:47:31,929 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:47:31,930 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:47:31,930 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:47:31,930 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:47:32,036 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:47:42,139 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13487#(and (<= |ULTIMATE.start_main_~y~0#1| 2147483646) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (< 2147483646 |ULTIMATE.start_main_~c~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2022-11-22 02:47:42,140 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:47:42,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:47:42,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-11-22 02:47:42,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216630902] [2022-11-22 02:47:42,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:47:42,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-22 02:47:42,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:47:42,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-22 02:47:42,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18547, Invalid=21253, Unknown=0, NotChecked=0, Total=39800 [2022-11-22 02:47:42,153 INFO L87 Difference]: Start difference. First operand 855 states and 949 transitions. Second operand has 192 states, 191 states have (on average 6.973821989528796) internal successors, (1332), 191 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:47:53,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:47:53,225 INFO L93 Difference]: Finished difference Result 1720 states and 2005 transitions. [2022-11-22 02:47:53,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-22 02:47:53,227 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.973821989528796) internal successors, (1332), 191 states have internal predecessors, (1332), 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 666 [2022-11-22 02:47:53,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:47:53,235 INFO L225 Difference]: With dead ends: 1720 [2022-11-22 02:47:53,235 INFO L226 Difference]: Without dead ends: 1719 [2022-11-22 02:47:53,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2091 GetRequests, 1798 SyntacticMatches, 95 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29539 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=18547, Invalid=21253, Unknown=0, NotChecked=0, Total=39800 [2022-11-22 02:47:53,242 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 1854 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:47:53,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1854 Valid, 1147 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:47:53,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2022-11-22 02:47:53,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1719. [2022-11-22 02:47:53,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1719 states, 1718 states have (on average 1.111175785797439) internal successors, (1909), 1718 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:47:53,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1719 states to 1719 states and 1909 transitions. [2022-11-22 02:47:53,378 INFO L78 Accepts]: Start accepts. Automaton has 1719 states and 1909 transitions. Word has length 666 [2022-11-22 02:47:53,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:47:53,382 INFO L495 AbstractCegarLoop]: Abstraction has 1719 states and 1909 transitions. [2022-11-22 02:47:53,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.973821989528796) internal successors, (1332), 191 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:47:53,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1719 states and 1909 transitions. [2022-11-22 02:47:53,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1339 [2022-11-22 02:47:53,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:47:53,448 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 191, 191, 191, 190, 190, 1, 1, 1] [2022-11-22 02:47:53,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 02:47:53,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:47:53,666 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:47:53,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:47:53,667 INFO L85 PathProgramCache]: Analyzing trace with hash -446002715, now seen corresponding path program 7 times [2022-11-22 02:47:53,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:47:53,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507678765] [2022-11-22 02:47:53,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:53,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:47:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 126825 backedges. 0 proven. 126825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:32,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:48:32,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507678765] [2022-11-22 02:48:32,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507678765] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:48:32,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85624080] [2022-11-22 02:48:32,579 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 02:48:32,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:48:32,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:48:32,584 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:48:32,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 02:48:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:33,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 2491 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-22 02:48:33,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 126825 backedges. 0 proven. 126825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:35,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:49:27,109 INFO L134 CoverageAnalysis]: Checked inductivity of 126825 backedges. 0 proven. 126825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:27,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85624080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:49:27,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1804673564] [2022-11-22 02:49:27,112 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 02:49:27,112 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:49:27,113 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:49:27,113 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:49:27,113 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:49:27,207 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:50:10,392 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26484#(and (<= |ULTIMATE.start_main_~y~0#1| 2147483646) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (< 2147483646 |ULTIMATE.start_main_~c~0#1|) (<= 0 (+ |ULTIMATE.start_main_~y~0#1| 1)))' at error location [2022-11-22 02:50:10,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:50:10,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:50:10,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-11-22 02:50:10,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835238365] [2022-11-22 02:50:10,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:50:10,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-22 02:50:10,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:10,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-22 02:50:10,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73939, Invalid=79333, Unknown=0, NotChecked=0, Total=153272 [2022-11-22 02:50:10,430 INFO L87 Difference]: Start difference. First operand 1719 states and 1909 transitions. Second operand has 384 states, 383 states have (on average 6.986945169712794) internal successors, (2676), 383 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:56,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:52:56,640 INFO L93 Difference]: Finished difference Result 3448 states and 4021 transitions. [2022-11-22 02:52:56,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-22 02:52:56,642 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 6.986945169712794) internal successors, (2676), 383 states have internal predecessors, (2676), 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 1338 [2022-11-22 02:52:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:52:56,654 INFO L225 Difference]: With dead ends: 3448 [2022-11-22 02:52:56,654 INFO L226 Difference]: Without dead ends: 3447 [2022-11-22 02:52:56,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4203 GetRequests, 3622 SyntacticMatches, 191 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114403 ImplicationChecksByTransitivity, 108.7s TimeCoverageRelationStatistics Valid=73939, Invalid=79333, Unknown=0, NotChecked=0, Total=153272 [2022-11-22 02:52:56,666 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 4508 mSDsluCounter, 2292 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4508 SdHoareTripleChecker+Valid, 2299 SdHoareTripleChecker+Invalid, 1352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:52:56,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4508 Valid, 2299 Invalid, 1352 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-22 02:52:56,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2022-11-22 02:52:56,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 3447. [2022-11-22 02:52:56,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 3446 states have (on average 1.1111433546140452) internal successors, (3829), 3446 states have internal predecessors, (3829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:56,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 3829 transitions. [2022-11-22 02:52:56,869 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 3829 transitions. Word has length 1338 [2022-11-22 02:52:56,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:52:56,871 INFO L495 AbstractCegarLoop]: Abstraction has 3447 states and 3829 transitions. [2022-11-22 02:52:56,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 6.986945169712794) internal successors, (2676), 383 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:56,873 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 3829 transitions. [2022-11-22 02:52:56,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2683 [2022-11-22 02:52:56,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:52:56,926 INFO L195 NwaCegarLoop]: trace histogram [383, 383, 383, 383, 383, 382, 382, 1, 1, 1] [2022-11-22 02:52:56,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 02:52:57,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:52:57,140 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-22 02:52:57,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:52:57,141 INFO L85 PathProgramCache]: Analyzing trace with hash -225766939, now seen corresponding path program 8 times [2022-11-22 02:52:57,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:52:57,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909101938] [2022-11-22 02:52:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:52:57,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:52:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:56:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 511689 backedges. 0 proven. 511689 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:56:37,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:56:37,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909101938] [2022-11-22 02:56:37,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909101938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:56:37,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942938706] [2022-11-22 02:56:37,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:56:37,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:56:37,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:56:37,771 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:56:37,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d97f43b-02d5-42d5-a9c1-25341bbcd79f/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 02:56:44,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-11-22 02:56:44,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:56:44,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 4987 conjuncts, 384 conjunts are in the unsatisfiable core [2022-11-22 02:56:44,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:56:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 511689 backedges. 0 proven. 511689 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:56:49,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 03:00:08,120 INFO L134 CoverageAnalysis]: Checked inductivity of 511689 backedges. 0 proven. 511689 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 03:00:08,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942938706] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 03:00:08,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [177068929] [2022-11-22 03:00:08,123 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-22 03:00:08,124 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 03:00:08,124 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 03:00:08,124 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 03:00:08,125 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 03:00:08,217 INFO L180 IcfgInterpreter]: Interpretation finished