./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta --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 d69e4513fb8989bf305d8f9ce21862e8623f2a3d0c8146e8e7fb7e8c658a7eff --- 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-dbf71c6-m [2022-10-17 17:12:53,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:12:53,235 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:12:53,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:12:53,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:12:53,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:12:53,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:12:53,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:12:53,281 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:12:53,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:12:53,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:12:53,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:12:53,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:12:53,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:12:53,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:12:53,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:12:53,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:12:53,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:12:53,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:12:53,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:12:53,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:12:53,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:12:53,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:12:53,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:12:53,309 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:12:53,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:12:53,310 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:12:53,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:12:53,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:12:53,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:12:53,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:12:53,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:12:53,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:12:53,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:12:53,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:12:53,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:12:53,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:12:53,320 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:12:53,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:12:53,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:12:53,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:12:53,323 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-10-17 17:12:53,364 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:12:53,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:12:53,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:12:53,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:12:53,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:12:53,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:12:53,366 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:12:53,366 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:12:53,366 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:12:53,367 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:12:53,367 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:12:53,367 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:12:53,367 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:12:53,367 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:12:53,368 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:12:53,368 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:12:53,368 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:12:53,368 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:12:53,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:12:53,369 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:12:53,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:12:53,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:12:53,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:12:53,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:12:53,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:12:53,371 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-17 17:12:53,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:12:53,371 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:12:53,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:12:53,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:12:53,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:12:53,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:12:53,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:12:53,373 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:12:53,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:12:53,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:12:53,373 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:12:53,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:12:53,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:12:53,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:12:53,374 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_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d69e4513fb8989bf305d8f9ce21862e8623f2a3d0c8146e8e7fb7e8c658a7eff [2022-10-17 17:12:53,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:12:53,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:12:53,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:12:53,622 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:12:53,623 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:12:53,624 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2022-10-17 17:12:53,694 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/data/17aa791e6/542f531482a74cf3a6881a20876c4319/FLAGaf134170d [2022-10-17 17:12:54,209 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:12:54,209 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2022-10-17 17:12:54,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/data/17aa791e6/542f531482a74cf3a6881a20876c4319/FLAGaf134170d [2022-10-17 17:12:54,593 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/data/17aa791e6/542f531482a74cf3a6881a20876c4319 [2022-10-17 17:12:54,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:12:54,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:12:54,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:12:54,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:12:54,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:12:54,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:12:54" (1/1) ... [2022-10-17 17:12:54,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147e7778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:12:54, skipping insertion in model container [2022-10-17 17:12:54,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:12:54" (1/1) ... [2022-10-17 17:12:54,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:12:54,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:12:54,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:12:54,818 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:12:54,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:12:54,851 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:12:54,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:12:54 WrapperNode [2022-10-17 17:12:54,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:12:54,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:12:54,853 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:12:54,853 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:12:54,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:12:54" (1/1) ... [2022-10-17 17:12:54,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:12:54" (1/1) ... [2022-10-17 17:12:54,886 INFO L138 Inliner]: procedures = 8, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-10-17 17:12:54,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:12:54,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:12:54,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:12:54,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:12:54,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:12:54" (1/1) ... [2022-10-17 17:12:54,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:12:54" (1/1) ... [2022-10-17 17:12:54,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:12:54" (1/1) ... [2022-10-17 17:12:54,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:12:54" (1/1) ... [2022-10-17 17:12:54,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:12:54" (1/1) ... [2022-10-17 17:12:54,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:12:54" (1/1) ... [2022-10-17 17:12:54,908 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:12:54" (1/1) ... [2022-10-17 17:12:54,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:12:54" (1/1) ... [2022-10-17 17:12:54,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:12:54,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:12:54,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:12:54,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:12:54,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:12:54" (1/1) ... [2022-10-17 17:12:54,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:12:54,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:12:54,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:12:54,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:12:54,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:12:54,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:12:54,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:12:54,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:12:54,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:12:54,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:12:55,054 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:12:55,056 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:12:55,196 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:12:55,232 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:12:55,234 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 17:12:55,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:12:55 BoogieIcfgContainer [2022-10-17 17:12:55,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:12:55,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:12:55,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:12:55,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:12:55,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:12:54" (1/3) ... [2022-10-17 17:12:55,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3340d64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:12:55, skipping insertion in model container [2022-10-17 17:12:55,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:12:54" (2/3) ... [2022-10-17 17:12:55,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3340d64d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:12:55, skipping insertion in model container [2022-10-17 17:12:55,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:12:55" (3/3) ... [2022-10-17 17:12:55,261 INFO L112 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Array-1.c [2022-10-17 17:12:55,285 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:12:55,285 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-10-17 17:12:55,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:12:55,370 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;@431a2a6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:12:55,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-10-17 17:12:55,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 18 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) [2022-10-17 17:12:55,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:12:55,400 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:12:55,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 17:12:55,402 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)] === [2022-10-17 17:12:55,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:12:55,411 INFO L85 PathProgramCache]: Analyzing trace with hash 86379, now seen corresponding path program 1 times [2022-10-17 17:12:55,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:12:55,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164527111] [2022-10-17 17:12:55,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:12:55,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:12:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:12:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:12:55,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:12:55,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164527111] [2022-10-17 17:12:55,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164527111] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:12:55,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:12:55,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:12:55,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522994023] [2022-10-17 17:12:55,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:12:55,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 17:12:55,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:12:55,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 17:12:55,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 17:12:55,812 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 18 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) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-10-17 17:12:55,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:12:55,869 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2022-10-17 17:12:55,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 17:12:55,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-10-17 17:12:55,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:12:55,880 INFO L225 Difference]: With dead ends: 37 [2022-10-17 17:12:55,880 INFO L226 Difference]: Without dead ends: 20 [2022-10-17 17:12:55,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:12:55,887 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:12:55,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 41 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:12:55,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-17 17:12:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-10-17 17:12:55,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:12:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-10-17 17:12:55,923 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 3 [2022-10-17 17:12:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:12:55,923 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-10-17 17:12:55,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-10-17 17:12:55,924 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-10-17 17:12:55,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-17 17:12:55,924 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:12:55,924 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-10-17 17:12:55,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:12:55,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:12:55,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:12:55,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1721603529, now seen corresponding path program 1 times [2022-10-17 17:12:55,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:12:55,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642031318] [2022-10-17 17:12:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:12:55,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:12:55,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:12:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 17:12:55,996 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:12:55,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642031318] [2022-10-17 17:12:55,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642031318] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:12:55,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:12:55,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:12:55,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126896735] [2022-10-17 17:12:55,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:12:55,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 17:12:55,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:12:56,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 17:12:56,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 17:12:56,000 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:12:56,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:12:56,049 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-10-17 17:12:56,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 17:12:56,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-17 17:12:56,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:12:56,050 INFO L225 Difference]: With dead ends: 20 [2022-10-17 17:12:56,050 INFO L226 Difference]: Without dead ends: 19 [2022-10-17 17:12:56,051 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 [2022-10-17 17:12:56,053 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:12:56,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:12:56,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-10-17 17:12:56,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-10-17 17:12:56,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.5) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:12:56,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-10-17 17:12:56,059 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2022-10-17 17:12:56,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:12:56,059 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-10-17 17:12:56,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:12:56,060 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-10-17 17:12:56,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 17:12:56,060 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:12:56,061 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2022-10-17 17:12:56,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:12:56,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:12:56,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:12:56,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1830101801, now seen corresponding path program 1 times [2022-10-17 17:12:56,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:12:56,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865656228] [2022-10-17 17:12:56,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:12:56,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:12:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:12:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:12:56,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:12:56,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865656228] [2022-10-17 17:12:56,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865656228] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:12:56,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118926001] [2022-10-17 17:12:56,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:12:56,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:12:56,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:12:56,210 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:12:56,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 17:12:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:12:56,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 17:12:56,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:12:56,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:12:56,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:12:56,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118926001] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:12:56,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 17:12:56,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-10-17 17:12:56,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027366073] [2022-10-17 17:12:56,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:12:56,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:12:56,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:12:56,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:12:56,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:12:56,367 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-10-17 17:12:56,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:12:56,412 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-10-17 17:12:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:12:56,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 [2022-10-17 17:12:56,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:12:56,416 INFO L225 Difference]: With dead ends: 19 [2022-10-17 17:12:56,417 INFO L226 Difference]: Without dead ends: 18 [2022-10-17 17:12:56,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-10-17 17:12:56,423 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:12:56,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 33 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:12:56,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-10-17 17:12:56,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2022-10-17 17:12:56,433 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) [2022-10-17 17:12:56,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-10-17 17:12:56,435 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 7 [2022-10-17 17:12:56,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:12:56,435 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-10-17 17:12:56,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2022-10-17 17:12:56,436 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-10-17 17:12:56,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:12:56,436 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:12:56,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:12:56,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:12:56,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:12:56,663 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:12:56,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:12:56,663 INFO L85 PathProgramCache]: Analyzing trace with hash -2081092992, now seen corresponding path program 1 times [2022-10-17 17:12:56,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:12:56,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978342526] [2022-10-17 17:12:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:12:56,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:12:56,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:12:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:12:56,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:12:56,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978342526] [2022-10-17 17:12:56,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978342526] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:12:56,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619843356] [2022-10-17 17:12:56,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:12:56,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:12:56,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:12:56,807 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:12:56,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 17:12:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:12:56,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 17:12:56,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:12:56,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:12:56,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:12:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:12:56,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619843356] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:12:56,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [348294524] [2022-10-17 17:12:56,970 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:12:56,970 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:12:56,974 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:12:56,980 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:12:56,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:12:57,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:12:57,081 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-10-17 17:12:57,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-17 17:12:57,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:12:57,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-10-17 17:12:57,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:12:57,465 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-10-17 17:12:57,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 141 [2022-10-17 17:12:57,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-17 17:12:57,636 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:12:57,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [348294524] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:12:57,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:12:57,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 4, 4] total 16 [2022-10-17 17:12:57,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179143474] [2022-10-17 17:12:57,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:12:57,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 17:12:57,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:12:57,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 17:12:57,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-10-17 17:12:57,970 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2022-10-17 17:12:58,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:12:58,168 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-10-17 17:12:58,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 17:12:58,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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 [2022-10-17 17:12:58,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:12:58,170 INFO L225 Difference]: With dead ends: 27 [2022-10-17 17:12:58,170 INFO L226 Difference]: Without dead ends: 25 [2022-10-17 17:12:58,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-10-17 17:12:58,176 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:12:58,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 26 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:12:58,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-10-17 17:12:58,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-10-17 17:12:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 22 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:12:58,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-10-17 17:12:58,192 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 9 [2022-10-17 17:12:58,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:12:58,192 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-10-17 17:12:58,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2022-10-17 17:12:58,193 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-10-17 17:12:58,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:12:58,195 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:12:58,198 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:12:58,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:12:58,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:12:58,422 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)] === [2022-10-17 17:12:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:12:58,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2081092800, now seen corresponding path program 1 times [2022-10-17 17:12:58,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:12:58,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118641536] [2022-10-17 17:12:58,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:12:58,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:12:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:12:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:12:58,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:12:58,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118641536] [2022-10-17 17:12:58,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118641536] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:12:58,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996134609] [2022-10-17 17:12:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:12:58,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:12:58,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:12:58,532 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:12:58,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 17:12:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:12:58,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 17:12:58,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:12:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:12:58,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:12:58,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:12:58,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996134609] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:12:58,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [66074860] [2022-10-17 17:12:58,650 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:12:58,650 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:12:58,650 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:12:58,651 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:12:58,651 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:12:58,677 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-10-17 17:12:58,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:12:58,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-17 17:12:58,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:12:58,739 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-10-17 17:12:58,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:12:58,875 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-10-17 17:12:58,876 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 138 [2022-10-17 17:12:58,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-17 17:12:59,024 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:12:59,398 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '396#(and (<= 1048 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_#t~mem6#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) |ULTIMATE.start_main_~#a~0#1.offset|))) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem6#1| |ULTIMATE.start_main_#t~post7#1|) (= |#NULL.offset| 0) (not (<= |ULTIMATE.start_main_#t~post7#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:12:59,398 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:12:59,398 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:12:59,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-10-17 17:12:59,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936097043] [2022-10-17 17:12:59,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:12:59,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 17:12:59,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:12:59,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 17:12:59,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-10-17 17:12:59,400 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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) [2022-10-17 17:12:59,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:12:59,450 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2022-10-17 17:12:59,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:12:59,451 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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) Word has length 9 [2022-10-17 17:12:59,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:12:59,452 INFO L225 Difference]: With dead ends: 47 [2022-10-17 17:12:59,452 INFO L226 Difference]: Without dead ends: 29 [2022-10-17 17:12:59,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2022-10-17 17:12:59,453 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:12:59,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 56 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:12:59,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-10-17 17:12:59,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-10-17 17:12:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.36) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:12:59,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-10-17 17:12:59,460 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 9 [2022-10-17 17:12:59,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:12:59,460 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-10-17 17:12:59,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 9 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) [2022-10-17 17:12:59,461 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-10-17 17:12:59,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-10-17 17:12:59,461 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:12:59,461 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2022-10-17 17:12:59,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:12:59,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:12:59,662 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:12:59,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:12:59,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2122016704, now seen corresponding path program 2 times [2022-10-17 17:12:59,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:12:59,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710412013] [2022-10-17 17:12:59,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:12:59,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:12:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:12:59,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:12:59,808 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:12:59,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710412013] [2022-10-17 17:12:59,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710412013] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:12:59,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841940413] [2022-10-17 17:12:59,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:12:59,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:12:59,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:12:59,814 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:12:59,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 17:12:59,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-10-17 17:12:59,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:12:59,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 17:12:59,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:12:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:12:59,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:12:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:12:59,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841940413] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:12:59,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1475729332] [2022-10-17 17:12:59,997 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:12:59,997 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:12:59,997 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:12:59,997 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:12:59,998 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:00,010 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:13:00,022 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-10-17 17:13:00,038 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-17 17:13:00,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:13:00,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-10-17 17:13:00,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:13:00,175 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-10-17 17:13:00,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 138 [2022-10-17 17:13:00,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-17 17:13:00,281 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:00,665 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '600#(and (<= 1048 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_#t~mem6#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) |ULTIMATE.start_main_~#a~0#1.offset|))) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem6#1| |ULTIMATE.start_main_#t~post7#1|) (= |#NULL.offset| 0) (not (<= |ULTIMATE.start_main_#t~post7#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:13:00,665 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:00,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:00,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-10-17 17:13:00,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677234886] [2022-10-17 17:13:00,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:00,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-17 17:13:00,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:00,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 17:13:00,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2022-10-17 17:13:00,667 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 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) [2022-10-17 17:13:00,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:00,793 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2022-10-17 17:13:00,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 17:13:00,793 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 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 [2022-10-17 17:13:00,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:00,794 INFO L225 Difference]: With dead ends: 59 [2022-10-17 17:13:00,794 INFO L226 Difference]: Without dead ends: 41 [2022-10-17 17:13:00,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=794, Unknown=0, NotChecked=0, Total=992 [2022-10-17 17:13:00,796 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 28 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:00,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 56 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:13:00,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-17 17:13:00,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-10-17 17:13:00,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 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) [2022-10-17 17:13:00,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-10-17 17:13:00,805 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 15 [2022-10-17 17:13:00,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:00,806 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-10-17 17:13:00,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 17 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) [2022-10-17 17:13:00,806 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-10-17 17:13:00,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 17:13:00,807 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:00,807 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1] [2022-10-17 17:13:00,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:01,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:01,035 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:01,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:01,036 INFO L85 PathProgramCache]: Analyzing trace with hash -431357760, now seen corresponding path program 3 times [2022-10-17 17:13:01,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:01,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042311543] [2022-10-17 17:13:01,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:01,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:01,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:01,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042311543] [2022-10-17 17:13:01,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042311543] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:01,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302026847] [2022-10-17 17:13:01,356 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-10-17 17:13:01,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:01,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:01,357 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:01,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 17:13:01,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-10-17 17:13:01,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:13:01,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 17:13:01,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:01,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:01,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302026847] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:01,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1250245290] [2022-10-17 17:13:01,803 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:13:01,803 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:01,804 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:01,804 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:01,804 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:01,820 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-10-17 17:13:01,827 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:13:01,841 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-17 17:13:01,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:13:01,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-10-17 17:13:01,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:13:01,966 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-10-17 17:13:01,966 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 141 [2022-10-17 17:13:02,034 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-17 17:13:02,076 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:02,499 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '932#(and (<= 1048 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_#t~mem6#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) |ULTIMATE.start_main_~#a~0#1.offset|))) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem6#1| |ULTIMATE.start_main_#t~post7#1|) (= |#NULL.offset| 0) (not (<= |ULTIMATE.start_main_#t~post7#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:13:02,499 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:02,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:02,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-10-17 17:13:02,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006198834] [2022-10-17 17:13:02,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:02,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-17 17:13:02,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:02,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-17 17:13:02,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=1389, Unknown=0, NotChecked=0, Total=1722 [2022-10-17 17:13:02,502 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 33 states have internal predecessors, (54), 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) [2022-10-17 17:13:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:02,826 INFO L93 Difference]: Finished difference Result 83 states and 100 transitions. [2022-10-17 17:13:02,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-10-17 17:13:02,826 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 33 states have internal predecessors, (54), 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 27 [2022-10-17 17:13:02,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:02,827 INFO L225 Difference]: With dead ends: 83 [2022-10-17 17:13:02,827 INFO L226 Difference]: Without dead ends: 65 [2022-10-17 17:13:02,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=686, Invalid=2394, Unknown=0, NotChecked=0, Total=3080 [2022-10-17 17:13:02,830 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 72 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:02,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 89 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:13:02,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-10-17 17:13:02,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-10-17 17:13:02,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 64 states have internal predecessors, (70), 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) [2022-10-17 17:13:02,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2022-10-17 17:13:02,842 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 27 [2022-10-17 17:13:02,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:02,842 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2022-10-17 17:13:02,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.588235294117647) internal successors, (54), 33 states have internal predecessors, (54), 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) [2022-10-17 17:13:02,842 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2022-10-17 17:13:02,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-17 17:13:02,844 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:02,844 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 1, 1, 1, 1, 1, 1] [2022-10-17 17:13:02,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:03,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:03,070 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)] === [2022-10-17 17:13:03,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:03,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1815170368, now seen corresponding path program 4 times [2022-10-17 17:13:03,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:03,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067211624] [2022-10-17 17:13:03,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:03,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:03,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:03,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067211624] [2022-10-17 17:13:03,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067211624] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:03,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308058452] [2022-10-17 17:13:03,992 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-10-17 17:13:03,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:03,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:03,993 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:04,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 17:13:04,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:04,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-17 17:13:04,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:04,179 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:04,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:05,158 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:05,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308058452] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:05,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1408313103] [2022-10-17 17:13:05,161 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:13:05,161 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:05,161 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:05,161 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:05,161 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:05,172 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-10-17 17:13:05,179 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:13:05,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-17 17:13:05,209 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 32 [2022-10-17 17:13:05,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:13:05,305 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-10-17 17:13:05,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 141 [2022-10-17 17:13:05,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-17 17:13:05,402 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:05,906 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1520#(and (<= 1048 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_#t~mem6#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) |ULTIMATE.start_main_~#a~0#1.offset|))) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem6#1| |ULTIMATE.start_main_#t~post7#1|) (= |#NULL.offset| 0) (not (<= |ULTIMATE.start_main_#t~post7#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:13:05,906 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:05,906 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:05,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 65 [2022-10-17 17:13:05,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773695220] [2022-10-17 17:13:05,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:05,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-10-17 17:13:05,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:05,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-10-17 17:13:05,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1149, Invalid=4253, Unknown=0, NotChecked=0, Total=5402 [2022-10-17 17:13:05,911 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 66 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 65 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:06,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:06,825 INFO L93 Difference]: Finished difference Result 131 states and 156 transitions. [2022-10-17 17:13:06,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-10-17 17:13:06,826 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 65 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-10-17 17:13:06,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:06,827 INFO L225 Difference]: With dead ends: 131 [2022-10-17 17:13:06,827 INFO L226 Difference]: Without dead ends: 113 [2022-10-17 17:13:06,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2895 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2622, Invalid=8090, Unknown=0, NotChecked=0, Total=10712 [2022-10-17 17:13:06,833 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 190 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:06,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 100 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 17:13:06,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-10-17 17:13:06,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2022-10-17 17:13:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 109 states have (on average 1.0825688073394495) internal successors, (118), 112 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) [2022-10-17 17:13:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 118 transitions. [2022-10-17 17:13:06,850 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 118 transitions. Word has length 51 [2022-10-17 17:13:06,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:06,851 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 118 transitions. [2022-10-17 17:13:06,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 65 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 17:13:06,851 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 118 transitions. [2022-10-17 17:13:06,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-10-17 17:13:06,855 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:06,855 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1] [2022-10-17 17:13:06,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:07,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-10-17 17:13:07,069 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-10-17 17:13:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1299584704, now seen corresponding path program 5 times [2022-10-17 17:13:07,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:07,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469559999] [2022-10-17 17:13:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:07,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:13:10,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:10,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:13:10,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469559999] [2022-10-17 17:13:10,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469559999] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 17:13:10,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676468350] [2022-10-17 17:13:10,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 17:13:10,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 17:13:10,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:13:10,198 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 17:13:10,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 17:13:21,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2022-10-17 17:13:21,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 17:13:21,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 64 conjunts are in the unsatisfiable core [2022-10-17 17:13:21,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:13:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:21,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 17:13:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1426 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:13:25,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676468350] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 17:13:25,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1379086712] [2022-10-17 17:13:25,351 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-10-17 17:13:25,351 INFO L166 IcfgInterpreter]: Building call graph [2022-10-17 17:13:25,351 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-10-17 17:13:25,352 INFO L176 IcfgInterpreter]: Starting interpretation [2022-10-17 17:13:25,352 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-10-17 17:13:25,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-10-17 17:13:25,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 17:13:25,397 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-17 17:13:25,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:13:25,437 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 27 [2022-10-17 17:13:25,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 17:13:25,521 INFO L356 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-10-17 17:13:25,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 151 treesize of output 141 [2022-10-17 17:13:25,579 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-17 17:13:25,615 INFO L180 IcfgInterpreter]: Interpretation finished [2022-10-17 17:13:26,193 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2620#(and (<= 1048 |ULTIMATE.start_main_~i~0#1|) (<= 0 |ULTIMATE.start_main_~#a~0#1.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (= |ULTIMATE.start_main_~k~0#1| 0) (= |ULTIMATE.start_main_#t~mem6#1| (select (select |#memory_int| |ULTIMATE.start_main_~#a~0#1.base|) (+ (* |ULTIMATE.start_main_~k~0#1| 4) |ULTIMATE.start_main_~#a~0#1.offset|))) (= |ULTIMATE.start_main_~#a~0#1.offset| 0) (= |ULTIMATE.start_main_#t~mem6#1| |ULTIMATE.start_main_#t~post7#1|) (= |#NULL.offset| 0) (not (<= |ULTIMATE.start_main_#t~post7#1| 2147483648)) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-10-17 17:13:26,193 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-10-17 17:13:26,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 17:13:26,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 129 [2022-10-17 17:13:26,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513603385] [2022-10-17 17:13:26,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 17:13:26,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-10-17 17:13:26,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:13:26,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-10-17 17:13:26,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4317, Invalid=14589, Unknown=0, NotChecked=0, Total=18906 [2022-10-17 17:13:26,203 INFO L87 Difference]: Start difference. First operand 113 states and 118 transitions. Second operand has 130 states, 130 states have (on average 1.523076923076923) internal successors, (198), 129 states have internal predecessors, (198), 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) [2022-10-17 17:13:28,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:13:28,890 INFO L93 Difference]: Finished difference Result 227 states and 268 transitions. [2022-10-17 17:13:28,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2022-10-17 17:13:28,891 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 1.523076923076923) internal successors, (198), 129 states have internal predecessors, (198), 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 99 [2022-10-17 17:13:28,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:13:28,895 INFO L225 Difference]: With dead ends: 227 [2022-10-17 17:13:28,895 INFO L226 Difference]: Without dead ends: 209 [2022-10-17 17:13:28,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9919 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=10334, Invalid=29466, Unknown=0, NotChecked=0, Total=39800 [2022-10-17 17:13:28,903 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 396 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 17:13:28,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 166 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 17:13:28,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-10-17 17:13:28,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2022-10-17 17:13:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 205 states have (on average 1.0439024390243903) internal successors, (214), 208 states have internal predecessors, (214), 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) [2022-10-17 17:13:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 214 transitions. [2022-10-17 17:13:28,932 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 214 transitions. Word has length 99 [2022-10-17 17:13:28,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:13:28,932 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 214 transitions. [2022-10-17 17:13:28,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 1.523076923076923) internal successors, (198), 129 states have internal predecessors, (198), 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) [2022-10-17 17:13:28,933 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 214 transitions. [2022-10-17 17:13:28,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-10-17 17:13:28,936 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:13:28,937 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 1, 1, 1, 1, 1, 1] [2022-10-17 17:13:28,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 17:13:29,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72a5ab52-d10f-42f0-a29f-fc6703871355/bin/utaipan-G1rejxKTta/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-10-17 17:13:29,159 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)] === [2022-10-17 17:13:29,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:13:29,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1933369024, now seen corresponding path program 6 times [2022-10-17 17:13:29,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:13:29,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804345489] [2022-10-17 17:13:29,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:13:29,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:13:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat