./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0 --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 32bit --witnessprinter.graph.data.programhash 2c3b9571ba66fa4feec822ae5ad361f0264abe6d66c7b617817aa135932aee0a --- 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-e04fb08 [2022-11-16 19:49:59,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:49:59,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:49:59,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:49:59,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:49:59,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:49:59,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:49:59,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:49:59,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:49:59,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:49:59,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:49:59,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:49:59,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:49:59,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:49:59,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:49:59,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:49:59,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:49:59,372 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:49:59,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:49:59,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:49:59,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:49:59,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:49:59,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:49:59,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:49:59,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:49:59,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:49:59,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:49:59,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:49:59,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:49:59,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:49:59,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:49:59,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:49:59,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:49:59,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:49:59,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:49:59,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:49:59,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:49:59,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:49:59,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:49:59,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:49:59,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:49:59,404 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-16 19:49:59,463 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:49:59,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:49:59,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:49:59,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:49:59,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:49:59,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:49:59,469 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:49:59,470 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:49:59,470 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:49:59,470 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:49:59,471 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:49:59,472 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:49:59,472 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:49:59,473 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:49:59,473 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:49:59,473 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:49:59,473 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:49:59,474 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:49:59,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:49:59,475 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:49:59,475 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 19:49:59,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:49:59,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:49:59,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:49:59,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:49:59,479 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:49:59,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:49:59,488 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 19:49:59,488 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:49:59,488 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:49:59,489 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:49:59,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:49:59,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:49:59,490 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:49:59,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:49:59,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:49:59,491 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:49:59,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:49:59,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:49:59,492 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:49:59,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:49:59,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:49:59,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:49:59,493 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_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c3b9571ba66fa4feec822ae5ad361f0264abe6d66c7b617817aa135932aee0a [2022-11-16 19:49:59,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:49:59,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:49:59,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:49:59,907 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:49:59,908 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:49:59,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i [2022-11-16 19:49:59,983 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/data/3a7171455/fa397ee72e094366a64c4393c4325497/FLAG678a15e60 [2022-11-16 19:50:00,502 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:50:00,503 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i [2022-11-16 19:50:00,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/data/3a7171455/fa397ee72e094366a64c4393c4325497/FLAG678a15e60 [2022-11-16 19:50:00,843 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/data/3a7171455/fa397ee72e094366a64c4393c4325497 [2022-11-16 19:50:00,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:50:00,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:50:00,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:50:00,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:50:00,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:50:00,865 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:50:00" (1/1) ... [2022-11-16 19:50:00,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20512c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:50:00, skipping insertion in model container [2022-11-16 19:50:00,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:50:00" (1/1) ... [2022-11-16 19:50:00,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:50:00,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:50:01,112 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i[873,886] [2022-11-16 19:50:01,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:50:01,138 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:50:01,152 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/sv-benchmarks/c/loop-zilu/benchmark24_conjunctive.i[873,886] [2022-11-16 19:50:01,156 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:50:01,172 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:50:01,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:50:01 WrapperNode [2022-11-16 19:50:01,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:50:01,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:50:01,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:50:01,175 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:50:01,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:50:01" (1/1) ... [2022-11-16 19:50:01,200 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:50:01" (1/1) ... [2022-11-16 19:50:01,227 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2022-11-16 19:50:01,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:50:01,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:50:01,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:50:01,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:50:01,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:50:01" (1/1) ... [2022-11-16 19:50:01,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:50:01" (1/1) ... [2022-11-16 19:50:01,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:50:01" (1/1) ... [2022-11-16 19:50:01,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:50:01" (1/1) ... [2022-11-16 19:50:01,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:50:01" (1/1) ... [2022-11-16 19:50:01,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:50:01" (1/1) ... [2022-11-16 19:50:01,272 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:50:01" (1/1) ... [2022-11-16 19:50:01,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:50:01" (1/1) ... [2022-11-16 19:50:01,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:50:01,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:50:01,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:50:01,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:50:01,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:50:01" (1/1) ... [2022-11-16 19:50:01,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:50:01,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:50:01,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:50:01,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:50:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:50:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:50:01,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:50:01,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:50:01,486 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:50:01,488 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:50:01,680 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:50:01,738 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:50:01,738 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 19:50:01,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:50:01 BoogieIcfgContainer [2022-11-16 19:50:01,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:50:01,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:50:01,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:50:01,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:50:01,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:50:00" (1/3) ... [2022-11-16 19:50:01,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d0feba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:50:01, skipping insertion in model container [2022-11-16 19:50:01,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:50:01" (2/3) ... [2022-11-16 19:50:01,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d0feba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:50:01, skipping insertion in model container [2022-11-16 19:50:01,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:50:01" (3/3) ... [2022-11-16 19:50:01,756 INFO L112 eAbstractionObserver]: Analyzing ICFG benchmark24_conjunctive.i [2022-11-16 19:50:01,778 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:50:01,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 19:50:01,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:50:01,857 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;@4c2d95c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:50:01,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-16 19:50:01,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:01,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 19:50:01,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:01,875 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 19:50:01,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:01,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:01,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2301147, now seen corresponding path program 1 times [2022-11-16 19:50:01,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:01,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652380565] [2022-11-16 19:50:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:01,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:02,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:02,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:02,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652380565] [2022-11-16 19:50:02,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652380565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:02,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:02,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:50:02,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754552884] [2022-11-16 19:50:02,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:02,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:50:02,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:02,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:50:02,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:50:02,291 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:02,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:02,400 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-11-16 19:50:02,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:50:02,404 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 19:50:02,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:02,413 INFO L225 Difference]: With dead ends: 21 [2022-11-16 19:50:02,413 INFO L226 Difference]: Without dead ends: 18 [2022-11-16 19:50:02,416 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 [2022-11-16 19:50:02,421 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:02,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 14 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:02,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-16 19:50:02,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-16 19:50:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:02,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2022-11-16 19:50:02,463 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 4 [2022-11-16 19:50:02,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:02,463 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2022-11-16 19:50:02,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:02,464 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2022-11-16 19:50:02,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 19:50:02,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:02,465 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 19:50:02,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:50:02,467 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:02,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:02,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2302150, now seen corresponding path program 1 times [2022-11-16 19:50:02,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:02,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778428919] [2022-11-16 19:50:02,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:02,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:02,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:02,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:02,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778428919] [2022-11-16 19:50:02,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778428919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:02,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:02,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:50:02,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779813748] [2022-11-16 19:50:02,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:02,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:50:02,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:02,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:50:02,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:50:02,614 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:02,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:02,730 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-11-16 19:50:02,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:50:02,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-16 19:50:02,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:02,732 INFO L225 Difference]: With dead ends: 30 [2022-11-16 19:50:02,732 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 19:50:02,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:50:02,735 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 16 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:02,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 20 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:02,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 19:50:02,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2022-11-16 19:50:02,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2022-11-16 19:50:02,742 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 4 [2022-11-16 19:50:02,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:02,743 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2022-11-16 19:50:02,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2022-11-16 19:50:02,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 19:50:02,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:02,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 19:50:02,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:50:02,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:02,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:02,746 INFO L85 PathProgramCache]: Analyzing trace with hash 71335607, now seen corresponding path program 1 times [2022-11-16 19:50:02,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:02,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964542102] [2022-11-16 19:50:02,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:02,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:02,862 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:02,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964542102] [2022-11-16 19:50:02,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964542102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:02,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:02,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:50:02,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118369280] [2022-11-16 19:50:02,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:02,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:50:02,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:02,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:50:02,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:50:02,866 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:02,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:02,971 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2022-11-16 19:50:02,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:50:02,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 19:50:02,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:02,977 INFO L225 Difference]: With dead ends: 29 [2022-11-16 19:50:02,977 INFO L226 Difference]: Without dead ends: 28 [2022-11-16 19:50:02,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:50:02,987 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:02,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:02,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-16 19:50:02,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 22. [2022-11-16 19:50:03,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-16 19:50:03,004 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 5 [2022-11-16 19:50:03,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:03,005 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-16 19:50:03,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,006 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-16 19:50:03,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 19:50:03,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:03,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 19:50:03,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:50:03,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:03,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:03,017 INFO L85 PathProgramCache]: Analyzing trace with hash 71366711, now seen corresponding path program 1 times [2022-11-16 19:50:03,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:03,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565659211] [2022-11-16 19:50:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:03,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:03,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:03,069 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:03,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565659211] [2022-11-16 19:50:03,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565659211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:03,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:03,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:50:03,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383954453] [2022-11-16 19:50:03,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:03,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:50:03,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:03,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:50:03,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:03,072 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:03,096 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2022-11-16 19:50:03,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:50:03,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 19:50:03,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:03,098 INFO L225 Difference]: With dead ends: 28 [2022-11-16 19:50:03,099 INFO L226 Difference]: Without dead ends: 27 [2022-11-16 19:50:03,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:03,100 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:03,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:50:03,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-16 19:50:03,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-16 19:50:03,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.5) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-16 19:50:03,117 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2022-11-16 19:50:03,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:03,117 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-16 19:50:03,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,119 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-16 19:50:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 19:50:03,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:03,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 19:50:03,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 19:50:03,122 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:03,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:03,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2083563427, now seen corresponding path program 1 times [2022-11-16 19:50:03,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:03,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249200783] [2022-11-16 19:50:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:03,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:03,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:03,191 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:03,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249200783] [2022-11-16 19:50:03,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249200783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:03,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:03,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:50:03,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602608681] [2022-11-16 19:50:03,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:03,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:50:03,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:03,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:50:03,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:03,198 INFO L87 Difference]: Start difference. First operand 23 states and 24 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) [2022-11-16 19:50:03,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:03,241 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-11-16 19:50:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:50:03,242 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 [2022-11-16 19:50:03,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:03,244 INFO L225 Difference]: With dead ends: 30 [2022-11-16 19:50:03,245 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 19:50:03,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:03,250 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:03,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 22 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:50:03,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 19:50:03,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2022-11-16 19:50:03,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2022-11-16 19:50:03,256 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 6 [2022-11-16 19:50:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:03,257 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2022-11-16 19:50:03,257 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) [2022-11-16 19:50:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2022-11-16 19:50:03,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 19:50:03,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:03,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 19:50:03,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 19:50:03,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:03,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:03,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2082599192, now seen corresponding path program 1 times [2022-11-16 19:50:03,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:03,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894414616] [2022-11-16 19:50:03,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:03,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:03,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:03,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894414616] [2022-11-16 19:50:03,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894414616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:03,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:03,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 19:50:03,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197725993] [2022-11-16 19:50:03,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:03,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:50:03,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:03,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:50:03,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:03,303 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:03,316 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2022-11-16 19:50:03,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:50:03,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 19:50:03,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:03,318 INFO L225 Difference]: With dead ends: 24 [2022-11-16 19:50:03,318 INFO L226 Difference]: Without dead ends: 23 [2022-11-16 19:50:03,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:03,320 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:03,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 11 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:50:03,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-16 19:50:03,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-16 19:50:03,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.411764705882353) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2022-11-16 19:50:03,326 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 6 [2022-11-16 19:50:03,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:03,327 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2022-11-16 19:50:03,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,327 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2022-11-16 19:50:03,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:50:03,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:03,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:50:03,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 19:50:03,329 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:03,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:03,330 INFO L85 PathProgramCache]: Analyzing trace with hash -165956743, now seen corresponding path program 1 times [2022-11-16 19:50:03,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:03,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430956515] [2022-11-16 19:50:03,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:03,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:03,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:03,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:03,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430956515] [2022-11-16 19:50:03,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430956515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:03,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:03,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 19:50:03,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597294943] [2022-11-16 19:50:03,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:03,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:50:03,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:03,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:50:03,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:03,375 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:03,389 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-11-16 19:50:03,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:50:03,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 19:50:03,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:03,390 INFO L225 Difference]: With dead ends: 23 [2022-11-16 19:50:03,391 INFO L226 Difference]: Without dead ends: 22 [2022-11-16 19:50:03,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:03,392 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:03,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:50:03,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-16 19:50:03,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-16 19:50:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-16 19:50:03,398 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 7 [2022-11-16 19:50:03,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:03,399 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-16 19:50:03,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,399 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-16 19:50:03,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:50:03,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:03,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:50:03,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 19:50:03,400 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:03,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:03,401 INFO L85 PathProgramCache]: Analyzing trace with hash -136065447, now seen corresponding path program 1 times [2022-11-16 19:50:03,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:03,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101106534] [2022-11-16 19:50:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:03,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:03,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:03,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:03,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:03,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101106534] [2022-11-16 19:50:03,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101106534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:50:03,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:50:03,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:50:03,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805008725] [2022-11-16 19:50:03,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:50:03,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:50:03,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:03,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:50:03,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:03,434 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:03,444 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-11-16 19:50:03,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:50:03,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 19:50:03,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:03,445 INFO L225 Difference]: With dead ends: 22 [2022-11-16 19:50:03,445 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 19:50:03,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:50:03,447 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:03,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:50:03,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 19:50:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 19:50:03,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2022-11-16 19:50:03,452 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 7 [2022-11-16 19:50:03,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:03,452 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2022-11-16 19:50:03,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:03,453 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2022-11-16 19:50:03,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 19:50:03,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:03,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:50:03,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 19:50:03,454 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:03,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:03,455 INFO L85 PathProgramCache]: Analyzing trace with hash -570637594, now seen corresponding path program 1 times [2022-11-16 19:50:03,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:03,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564181227] [2022-11-16 19:50:03,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:03,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:03,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:03,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:03,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564181227] [2022-11-16 19:50:03,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564181227] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:50:03,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504010124] [2022-11-16 19:50:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:03,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:03,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:50:03,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:50:03,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:50:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:03,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:50:03,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:50:03,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:03,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:50:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:04,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504010124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:50:04,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1625109195] [2022-11-16 19:50:04,128 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:50:04,128 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:50:04,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:50:04,139 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:50:04,140 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:50:04,689 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:50:05,853 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '528#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (not (<= (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483647)) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-16 19:50:05,854 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:50:05,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:50:05,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-11-16 19:50:05,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582490785] [2022-11-16 19:50:05,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:50:05,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 19:50:05,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:05,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 19:50:05,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2022-11-16 19:50:05,857 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:06,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:06,079 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2022-11-16 19:50:06,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 19:50:06,079 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 19:50:06,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:06,080 INFO L225 Difference]: With dead ends: 31 [2022-11-16 19:50:06,080 INFO L226 Difference]: Without dead ends: 30 [2022-11-16 19:50:06,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2022-11-16 19:50:06,082 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:06,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 8 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:06,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-16 19:50:06,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2022-11-16 19:50:06,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.380952380952381) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:06,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-16 19:50:06,088 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 9 [2022-11-16 19:50:06,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:06,088 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-16 19:50:06,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:06,089 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-16 19:50:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 19:50:06,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:06,090 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-16 19:50:06,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 19:50:06,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 19:50:06,295 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:06,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:06,295 INFO L85 PathProgramCache]: Analyzing trace with hash -509927273, now seen corresponding path program 1 times [2022-11-16 19:50:06,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:06,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781459801] [2022-11-16 19:50:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:06,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:06,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:06,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781459801] [2022-11-16 19:50:06,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781459801] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:50:06,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866923063] [2022-11-16 19:50:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:06,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:06,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:50:06,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:50:06,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 19:50:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:06,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:50:06,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:50:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:06,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:50:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:06,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866923063] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:50:06,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1566242430] [2022-11-16 19:50:06,538 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:50:06,538 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:50:06,538 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:50:06,539 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:50:06,539 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:50:06,817 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:50:07,568 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '672#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_#t~post4#1|) 0) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (<= 2 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_#t~post4#1| |ULTIMATE.start_main_~k~0#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:50:07,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:50:07,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:50:07,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-16 19:50:07,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514697659] [2022-11-16 19:50:07,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:50:07,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 19:50:07,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:07,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 19:50:07,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-16 19:50:07,570 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:07,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:07,802 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2022-11-16 19:50:07,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 19:50:07,803 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 19:50:07,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:07,803 INFO L225 Difference]: With dead ends: 41 [2022-11-16 19:50:07,804 INFO L226 Difference]: Without dead ends: 37 [2022-11-16 19:50:07,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-11-16 19:50:07,805 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 32 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:07,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 21 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:07,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-16 19:50:07,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2022-11-16 19:50:07,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:07,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-11-16 19:50:07,811 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 10 [2022-11-16 19:50:07,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:07,812 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-11-16 19:50:07,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:07,812 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-11-16 19:50:07,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 19:50:07,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:07,813 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-11-16 19:50:07,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 19:50:08,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 19:50:08,020 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:08,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:08,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1372123773, now seen corresponding path program 1 times [2022-11-16 19:50:08,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:08,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324984070] [2022-11-16 19:50:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:08,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:08,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:08,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324984070] [2022-11-16 19:50:08,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324984070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:50:08,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269841640] [2022-11-16 19:50:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:08,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:08,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:50:08,084 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:50:08,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 19:50:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:08,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:50:08,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:50:08,153 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:08,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:50:08,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:08,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269841640] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:50:08,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1669985467] [2022-11-16 19:50:08,193 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:50:08,193 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:50:08,194 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:50:08,194 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:50:08,194 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:50:08,409 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:50:09,008 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '841#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:50:09,008 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:50:09,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:50:09,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-16 19:50:09,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531113788] [2022-11-16 19:50:09,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:50:09,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 19:50:09,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:09,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 19:50:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-16 19:50:09,010 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:09,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:09,060 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2022-11-16 19:50:09,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 19:50:09,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 19:50:09,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:09,061 INFO L225 Difference]: With dead ends: 40 [2022-11-16 19:50:09,061 INFO L226 Difference]: Without dead ends: 39 [2022-11-16 19:50:09,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-16 19:50:09,062 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 14 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:09,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 27 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:50:09,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-16 19:50:09,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2022-11-16 19:50:09,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.206896551724138) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:09,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2022-11-16 19:50:09,093 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 11 [2022-11-16 19:50:09,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:09,093 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2022-11-16 19:50:09,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:09,093 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2022-11-16 19:50:09,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 19:50:09,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:09,094 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-16 19:50:09,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 19:50:09,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:09,295 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:09,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:09,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2030361545, now seen corresponding path program 1 times [2022-11-16 19:50:09,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:09,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116686400] [2022-11-16 19:50:09,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:09,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:09,390 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:09,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:09,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116686400] [2022-11-16 19:50:09,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116686400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:50:09,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657732245] [2022-11-16 19:50:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:09,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:09,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:50:09,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:50:09,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 19:50:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:09,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 19:50:09,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:50:09,553 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:09,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:50:09,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:09,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657732245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:50:09,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [55507479] [2022-11-16 19:50:09,717 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-16 19:50:09,718 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:50:09,718 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:50:09,718 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:50:09,719 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:50:09,977 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:50:11,380 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1032#(and (<= 0 |#NULL.base|) (< (+ (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483648) 0) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-16 19:50:11,380 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:50:11,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:50:11,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-11-16 19:50:11,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117053083] [2022-11-16 19:50:11,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:50:11,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 19:50:11,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:11,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 19:50:11,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-11-16 19:50:11,387 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:11,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:11,649 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2022-11-16 19:50:11,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 19:50:11,650 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 19:50:11,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:11,651 INFO L225 Difference]: With dead ends: 33 [2022-11-16 19:50:11,651 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 19:50:11,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 19:50:11,653 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 46 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:11,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 2 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:11,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 19:50:11,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-16 19:50:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:11,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-11-16 19:50:11,659 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2022-11-16 19:50:11,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:11,660 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-11-16 19:50:11,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:11,660 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-11-16 19:50:11,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 19:50:11,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:11,661 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1] [2022-11-16 19:50:11,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 19:50:11,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:11,866 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:11,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:11,867 INFO L85 PathProgramCache]: Analyzing trace with hash -541004058, now seen corresponding path program 2 times [2022-11-16 19:50:11,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:11,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196658729] [2022-11-16 19:50:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:11,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:12,051 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:12,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:12,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196658729] [2022-11-16 19:50:12,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196658729] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:50:12,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655183054] [2022-11-16 19:50:12,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:50:12,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:12,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:50:12,053 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:50:12,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 19:50:12,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 19:50:12,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:50:12,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 19:50:12,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:50:12,387 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:12,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:50:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:12,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655183054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:50:12,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1116494246] [2022-11-16 19:50:12,784 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:50:12,785 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:50:12,785 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:50:12,785 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:50:12,786 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:50:13,034 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:50:14,255 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1270#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (not (<= (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483647)) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-16 19:50:14,255 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:50:14,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:50:14,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 12] total 31 [2022-11-16 19:50:14,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258417621] [2022-11-16 19:50:14,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:50:14,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 19:50:14,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:14,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 19:50:14,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=1229, Unknown=0, NotChecked=0, Total=1482 [2022-11-16 19:50:14,259 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 32 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 32 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) [2022-11-16 19:50:14,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:14,820 INFO L93 Difference]: Finished difference Result 46 states and 49 transitions. [2022-11-16 19:50:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 19:50:14,821 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 32 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 19 [2022-11-16 19:50:14,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:14,822 INFO L225 Difference]: With dead ends: 46 [2022-11-16 19:50:14,822 INFO L226 Difference]: Without dead ends: 43 [2022-11-16 19:50:14,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 996 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=469, Invalid=1981, Unknown=0, NotChecked=0, Total=2450 [2022-11-16 19:50:14,824 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 76 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:14,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 6 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:50:14,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-16 19:50:14,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2022-11-16 19:50:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2022-11-16 19:50:14,831 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 19 [2022-11-16 19:50:14,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:14,832 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2022-11-16 19:50:14,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.7419354838709677) internal successors, (54), 32 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) [2022-11-16 19:50:14,832 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2022-11-16 19:50:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 19:50:14,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:14,833 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1] [2022-11-16 19:50:14,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 19:50:15,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 19:50:15,039 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:15,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:15,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1171062877, now seen corresponding path program 2 times [2022-11-16 19:50:15,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:15,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958313712] [2022-11-16 19:50:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:15,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:15,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:15,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958313712] [2022-11-16 19:50:15,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958313712] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:50:15,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717775837] [2022-11-16 19:50:15,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:50:15,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:15,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:50:15,130 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:50:15,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 19:50:15,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 19:50:15,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:50:15,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 19:50:15,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:50:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:15,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:50:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:15,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717775837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:50:15,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1362106299] [2022-11-16 19:50:15,324 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:50:15,325 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:50:15,325 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:50:15,325 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:50:15,325 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:50:15,511 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:50:16,155 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1564#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:50:16,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:50:16,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:50:16,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-16 19:50:16,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364225127] [2022-11-16 19:50:16,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:50:16,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 19:50:16,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:16,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 19:50:16,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-16 19:50:16,157 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:16,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:16,232 INFO L93 Difference]: Finished difference Result 66 states and 71 transitions. [2022-11-16 19:50:16,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 19:50:16,233 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 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 26 [2022-11-16 19:50:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:16,236 INFO L225 Difference]: With dead ends: 66 [2022-11-16 19:50:16,237 INFO L226 Difference]: Without dead ends: 65 [2022-11-16 19:50:16,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-16 19:50:16,238 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:16,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 32 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:16,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-16 19:50:16,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2022-11-16 19:50:16,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.087719298245614) internal successors, (62), 58 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:16,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2022-11-16 19:50:16,268 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 26 [2022-11-16 19:50:16,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:16,269 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2022-11-16 19:50:16,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:16,270 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2022-11-16 19:50:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 19:50:16,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:16,271 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1] [2022-11-16 19:50:16,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 19:50:16,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:16,472 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:16,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:16,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1925953818, now seen corresponding path program 3 times [2022-11-16 19:50:16,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:16,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841812384] [2022-11-16 19:50:16,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:16,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:16,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:16,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841812384] [2022-11-16 19:50:16,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841812384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:50:16,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932487332] [2022-11-16 19:50:16,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:50:16,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:16,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:50:16,920 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:50:16,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 19:50:16,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:50:16,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:50:16,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 19:50:16,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:50:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:17,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:50:18,759 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:18,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932487332] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:50:18,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [502065211] [2022-11-16 19:50:18,763 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:50:18,763 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:50:18,763 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:50:18,764 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:50:18,764 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:50:18,952 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:50:21,032 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2009#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (not (<= (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483647)) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-16 19:50:21,032 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:50:21,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:50:21,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24, 24] total 63 [2022-11-16 19:50:21,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252753010] [2022-11-16 19:50:21,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:50:21,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-16 19:50:21,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:21,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-16 19:50:21,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=827, Invalid=4143, Unknown=0, NotChecked=0, Total=4970 [2022-11-16 19:50:21,036 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 64 states, 63 states have (on average 1.8095238095238095) internal successors, (114), 64 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:23,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:23,501 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2022-11-16 19:50:23,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-16 19:50:23,502 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.8095238095238095) internal successors, (114), 64 states have internal predecessors, (114), 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 39 [2022-11-16 19:50:23,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:23,503 INFO L225 Difference]: With dead ends: 88 [2022-11-16 19:50:23,503 INFO L226 Difference]: Without dead ends: 85 [2022-11-16 19:50:23,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 63 SyntacticMatches, 7 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4382 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1851, Invalid=7655, Unknown=0, NotChecked=0, Total=9506 [2022-11-16 19:50:23,506 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 187 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:23,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 11 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 936 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 19:50:23,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-16 19:50:23,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2022-11-16 19:50:23,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 79 states have (on average 1.0759493670886076) internal successors, (85), 80 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:23,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2022-11-16 19:50:23,529 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 39 [2022-11-16 19:50:23,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:23,530 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2022-11-16 19:50:23,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.8095238095238095) internal successors, (114), 64 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:23,530 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2022-11-16 19:50:23,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 19:50:23,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:23,539 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1] [2022-11-16 19:50:23,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 19:50:23,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 19:50:23,744 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:23,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:23,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1141767261, now seen corresponding path program 3 times [2022-11-16 19:50:23,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:23,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742318520] [2022-11-16 19:50:23,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:23,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:23,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:23,982 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:23,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:23,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742318520] [2022-11-16 19:50:23,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742318520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:50:23,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627807049] [2022-11-16 19:50:23,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:50:23,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:23,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:50:23,986 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:50:23,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 19:50:24,051 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:50:24,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:50:24,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 19:50:24,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:50:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:24,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:50:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:24,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627807049] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:50:24,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [798103999] [2022-11-16 19:50:24,447 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:50:24,447 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:50:24,448 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:50:24,448 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:50:24,448 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:50:24,651 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:50:25,652 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2625#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:50:25,652 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:50:25,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:50:25,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2022-11-16 19:50:25,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018647972] [2022-11-16 19:50:25,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:50:25,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 19:50:25,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:25,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 19:50:25,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=578, Unknown=0, NotChecked=0, Total=870 [2022-11-16 19:50:25,655 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:25,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:25,810 INFO L93 Difference]: Finished difference Result 134 states and 145 transitions. [2022-11-16 19:50:25,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 19:50:25,810 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 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 56 [2022-11-16 19:50:25,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:25,811 INFO L225 Difference]: With dead ends: 134 [2022-11-16 19:50:25,812 INFO L226 Difference]: Without dead ends: 133 [2022-11-16 19:50:25,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 139 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=292, Invalid=578, Unknown=0, NotChecked=0, Total=870 [2022-11-16 19:50:25,814 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 61 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:25,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 57 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:50:25,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-16 19:50:25,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 119. [2022-11-16 19:50:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 1.0769230769230769) internal successors, (126), 118 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:25,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2022-11-16 19:50:25,847 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 56 [2022-11-16 19:50:25,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:25,848 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2022-11-16 19:50:25,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.826086956521739) internal successors, (111), 24 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:25,848 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2022-11-16 19:50:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-16 19:50:25,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:25,851 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 15, 15, 1, 1, 1, 1] [2022-11-16 19:50:25,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 19:50:26,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 19:50:26,055 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:26,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:26,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1530464538, now seen corresponding path program 4 times [2022-11-16 19:50:26,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:26,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054741173] [2022-11-16 19:50:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:26,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:27,584 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:27,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:27,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054741173] [2022-11-16 19:50:27,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054741173] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:50:27,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804275853] [2022-11-16 19:50:27,585 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 19:50:27,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:27,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:50:27,587 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:50:27,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 19:50:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:27,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-16 19:50:27,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:50:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:29,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:50:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:32,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804275853] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:50:32,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [772886453] [2022-11-16 19:50:32,787 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:50:32,787 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:50:32,787 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:50:32,788 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:50:32,788 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:50:32,978 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:50:38,051 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3526#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (not (<= (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483647)) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-16 19:50:38,051 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:50:38,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:50:38,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 48, 48] total 127 [2022-11-16 19:50:38,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250415632] [2022-11-16 19:50:38,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:50:38,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2022-11-16 19:50:38,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:38,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2022-11-16 19:50:38,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2983, Invalid=15107, Unknown=0, NotChecked=0, Total=18090 [2022-11-16 19:50:38,060 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand has 128 states, 127 states have (on average 1.8425196850393701) internal successors, (234), 128 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:48,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:48,828 INFO L93 Difference]: Finished difference Result 172 states and 187 transitions. [2022-11-16 19:50:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-11-16 19:50:48,829 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 1.8425196850393701) internal successors, (234), 128 states have internal predecessors, (234), 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 79 [2022-11-16 19:50:48,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:48,830 INFO L225 Difference]: With dead ends: 172 [2022-11-16 19:50:48,830 INFO L226 Difference]: Without dead ends: 169 [2022-11-16 19:50:48,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 135 SyntacticMatches, 15 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18306 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=7351, Invalid=30091, Unknown=0, NotChecked=0, Total=37442 [2022-11-16 19:50:48,838 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 713 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 710 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 710 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:48,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 20 Invalid, 3612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [710 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 19:50:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-16 19:50:48,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 161. [2022-11-16 19:50:48,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 159 states have (on average 1.0628930817610063) internal successors, (169), 160 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 169 transitions. [2022-11-16 19:50:48,856 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 169 transitions. Word has length 79 [2022-11-16 19:50:48,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:48,856 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 169 transitions. [2022-11-16 19:50:48,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 1.8425196850393701) internal successors, (234), 128 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:48,857 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 169 transitions. [2022-11-16 19:50:48,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 19:50:48,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:48,858 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1] [2022-11-16 19:50:48,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 19:50:49,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 19:50:49,064 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:49,065 INFO L85 PathProgramCache]: Analyzing trace with hash -542313379, now seen corresponding path program 4 times [2022-11-16 19:50:49,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:49,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574017355] [2022-11-16 19:50:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:49,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:49,647 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:49,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574017355] [2022-11-16 19:50:49,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574017355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:50:49,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562573284] [2022-11-16 19:50:49,647 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 19:50:49,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:49,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:50:49,649 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:50:49,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 19:50:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:49,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 19:50:49,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:50:49,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:49,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:50:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:50,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562573284] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:50:50,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1879423354] [2022-11-16 19:50:50,921 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:50:50,921 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:50:50,921 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:50:50,921 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:50:50,921 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:50:51,072 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:50:53,201 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4786#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:50:53,201 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:50:53,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:50:53,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2022-11-16 19:50:53,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111357337] [2022-11-16 19:50:53,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:50:53,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 19:50:53,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:50:53,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 19:50:53,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1144, Invalid=1718, Unknown=0, NotChecked=0, Total=2862 [2022-11-16 19:50:53,204 INFO L87 Difference]: Start difference. First operand 161 states and 169 transitions. Second operand has 48 states, 47 states have (on average 4.914893617021277) internal successors, (231), 48 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:53,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:50:53,485 INFO L93 Difference]: Finished difference Result 270 states and 293 transitions. [2022-11-16 19:50:53,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 19:50:53,485 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.914893617021277) internal successors, (231), 48 states have internal predecessors, (231), 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 116 [2022-11-16 19:50:53,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:50:53,487 INFO L225 Difference]: With dead ends: 270 [2022-11-16 19:50:53,487 INFO L226 Difference]: Without dead ends: 269 [2022-11-16 19:50:53,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 295 SyntacticMatches, 23 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1989 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1144, Invalid=1718, Unknown=0, NotChecked=0, Total=2862 [2022-11-16 19:50:53,489 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 100 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:50:53,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 117 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:50:53,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-16 19:50:53,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 239. [2022-11-16 19:50:53,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 237 states have (on average 1.0717299578059072) internal successors, (254), 238 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:53,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 254 transitions. [2022-11-16 19:50:53,513 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 254 transitions. Word has length 116 [2022-11-16 19:50:53,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:50:53,514 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 254 transitions. [2022-11-16 19:50:53,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.914893617021277) internal successors, (231), 48 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:50:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 254 transitions. [2022-11-16 19:50:53,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-16 19:50:53,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:50:53,517 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 31, 1, 1, 1, 1] [2022-11-16 19:50:53,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 19:50:53,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 19:50:53,723 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:50:53,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:50:53,724 INFO L85 PathProgramCache]: Analyzing trace with hash -291744026, now seen corresponding path program 5 times [2022-11-16 19:50:53,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:50:53,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520393156] [2022-11-16 19:50:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:50:53,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:50:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:50:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:50:58,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:50:58,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520393156] [2022-11-16 19:50:58,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520393156] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:50:58,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838242380] [2022-11-16 19:50:58,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:50:58,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:50:58,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:50:58,307 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:50:58,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 19:50:58,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 32 check-sat command(s) [2022-11-16 19:50:58,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:50:58,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-16 19:50:58,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:51:04,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:51:04,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:51:14,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2356 backedges. 0 proven. 2356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:51:14,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838242380] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:51:14,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [585436100] [2022-11-16 19:51:14,986 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:51:14,986 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:51:14,986 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:51:14,986 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:51:14,986 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:51:15,160 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:51:29,809 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6599#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (not (<= (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483647)) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-16 19:51:29,809 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:51:29,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:51:29,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 96, 96] total 255 [2022-11-16 19:51:29,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969755283] [2022-11-16 19:51:29,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:51:29,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 256 states [2022-11-16 19:51:29,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:51:29,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 256 interpolants. [2022-11-16 19:51:29,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11327, Invalid=57579, Unknown=0, NotChecked=0, Total=68906 [2022-11-16 19:51:29,822 INFO L87 Difference]: Start difference. First operand 239 states and 254 transitions. Second operand has 256 states, 255 states have (on average 1.8588235294117648) internal successors, (474), 256 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:52:29,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:52:29,913 INFO L93 Difference]: Finished difference Result 340 states and 371 transitions. [2022-11-16 19:52:29,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-11-16 19:52:29,915 INFO L78 Accepts]: Start accepts. Automaton has has 256 states, 255 states have (on average 1.8588235294117648) internal successors, (474), 256 states have internal predecessors, (474), 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 159 [2022-11-16 19:52:29,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:52:29,917 INFO L225 Difference]: With dead ends: 340 [2022-11-16 19:52:29,918 INFO L226 Difference]: Without dead ends: 337 [2022-11-16 19:52:29,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 279 SyntacticMatches, 31 SemanticMatches, 384 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74762 ImplicationChecksByTransitivity, 83.5s TimeCoverageRelationStatistics Valid=29295, Invalid=119315, Unknown=0, NotChecked=0, Total=148610 [2022-11-16 19:52:29,932 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2800 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 10793 mSolverCounterSat, 3014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2800 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 13807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3014 IncrementalHoareTripleChecker+Valid, 10793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:52:29,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2800 Valid, 35 Invalid, 13807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3014 Valid, 10793 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-16 19:52:29,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-16 19:52:29,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 321. [2022-11-16 19:52:29,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 319 states have (on average 1.0564263322884013) internal successors, (337), 320 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:52:29,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 337 transitions. [2022-11-16 19:52:29,974 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 337 transitions. Word has length 159 [2022-11-16 19:52:29,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:52:29,974 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 337 transitions. [2022-11-16 19:52:29,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 256 states, 255 states have (on average 1.8588235294117648) internal successors, (474), 256 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:52:29,975 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 337 transitions. [2022-11-16 19:52:29,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-11-16 19:52:29,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:52:29,979 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1] [2022-11-16 19:52:29,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 19:52:30,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:52:30,185 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:52:30,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:52:30,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1549722717, now seen corresponding path program 5 times [2022-11-16 19:52:30,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:52:30,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543102000] [2022-11-16 19:52:30,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:52:30,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:52:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:52:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:52:32,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:52:32,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543102000] [2022-11-16 19:52:32,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543102000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:52:32,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375306123] [2022-11-16 19:52:32,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:52:32,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:52:32,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:52:32,721 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:52:32,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 19:52:32,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-16 19:52:32,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:52:32,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-16 19:52:32,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:52:33,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:52:33,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:52:37,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:52:37,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375306123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:52:37,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1554219337] [2022-11-16 19:52:37,096 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 19:52:37,097 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:52:37,097 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:52:37,097 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:52:37,097 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:52:37,231 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:52:43,675 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9147#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:52:43,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:52:43,675 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:52:43,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2022-11-16 19:52:43,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888537721] [2022-11-16 19:52:43,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:52:43,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-16 19:52:43,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:52:43,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-16 19:52:43,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4576, Invalid=5726, Unknown=0, NotChecked=0, Total=10302 [2022-11-16 19:52:43,680 INFO L87 Difference]: Start difference. First operand 321 states and 337 transitions. Second operand has 96 states, 95 states have (on average 4.957894736842105) internal successors, (471), 96 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:52:44,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:52:44,409 INFO L93 Difference]: Finished difference Result 542 states and 589 transitions. [2022-11-16 19:52:44,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-16 19:52:44,410 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.957894736842105) internal successors, (471), 96 states have internal predecessors, (471), 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 236 [2022-11-16 19:52:44,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:52:44,412 INFO L225 Difference]: With dead ends: 542 [2022-11-16 19:52:44,413 INFO L226 Difference]: Without dead ends: 541 [2022-11-16 19:52:44,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 754 GetRequests, 607 SyntacticMatches, 47 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7461 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=4576, Invalid=5726, Unknown=0, NotChecked=0, Total=10302 [2022-11-16 19:52:44,415 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 319 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:52:44,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 228 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 19:52:44,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-11-16 19:52:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 479. [2022-11-16 19:52:44,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 1.069182389937107) internal successors, (510), 478 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:52:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 510 transitions. [2022-11-16 19:52:44,459 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 510 transitions. Word has length 236 [2022-11-16 19:52:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:52:44,460 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 510 transitions. [2022-11-16 19:52:44,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.957894736842105) internal successors, (471), 96 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:52:44,461 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 510 transitions. [2022-11-16 19:52:44,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-16 19:52:44,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:52:44,467 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 63, 63, 1, 1, 1, 1] [2022-11-16 19:52:44,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 19:52:44,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:52:44,674 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 19:52:44,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:52:44,675 INFO L85 PathProgramCache]: Analyzing trace with hash 755439334, now seen corresponding path program 6 times [2022-11-16 19:52:44,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:52:44,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638345749] [2022-11-16 19:52:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:52:44,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:52:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:53:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:53:00,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:53:00,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638345749] [2022-11-16 19:53:00,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638345749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:53:00,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492653059] [2022-11-16 19:53:00,706 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:53:00,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:53:00,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:53:00,707 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:53:00,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 19:53:00,892 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:53:00,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:53:00,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 193 conjunts are in the unsatisfiable core [2022-11-16 19:53:00,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:53:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:53:22,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:54:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 9828 backedges. 0 proven. 9828 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:54:07,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492653059] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:54:07,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1731510240] [2022-11-16 19:54:07,359 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-16 19:54:07,359 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:54:07,360 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:54:07,360 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:54:07,360 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:54:07,487 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:55:00,214 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12784#(and (<= 0 |#NULL.base|) (<= |ULTIMATE.start_main_~i~0#1| 2147483647) (<= |#NULL.offset| 0) (<= 2 |ULTIMATE.start_main_~i~0#1|) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (not (<= (* 2 |ULTIMATE.start_main_~k~0#1|) 2147483647)) (not (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= 0 |#NULL.offset|) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|))' at error location [2022-11-16 19:55:00,214 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:55:00,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 19:55:00,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 192, 192] total 511 [2022-11-16 19:55:00,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445671253] [2022-11-16 19:55:00,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 19:55:00,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 512 states [2022-11-16 19:55:00,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:55:00,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 512 interpolants. [2022-11-16 19:55:00,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44143, Invalid=224699, Unknown=0, NotChecked=0, Total=268842 [2022-11-16 19:55:00,234 INFO L87 Difference]: Start difference. First operand 479 states and 510 transitions. Second operand has 512 states, 511 states have (on average 1.8669275929549902) internal successors, (954), 512 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:00:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:00:16,285 INFO L93 Difference]: Finished difference Result 676 states and 739 transitions. [2022-11-16 20:00:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2022-11-16 20:00:16,287 INFO L78 Accepts]: Start accepts. Automaton has has 512 states, 511 states have (on average 1.8669275929549902) internal successors, (954), 512 states have internal predecessors, (954), 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 319 [2022-11-16 20:00:16,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:00:16,290 INFO L225 Difference]: With dead ends: 676 [2022-11-16 20:00:16,290 INFO L226 Difference]: Without dead ends: 673 [2022-11-16 20:00:16,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1398 GetRequests, 567 SyntacticMatches, 63 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302106 ImplicationChecksByTransitivity, 412.1s TimeCoverageRelationStatistics Valid=116959, Invalid=475171, Unknown=0, NotChecked=0, Total=592130 [2022-11-16 20:00:16,323 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8901 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 37242 mSolverCounterSat, 10997 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8901 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 48239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 10997 IncrementalHoareTripleChecker+Valid, 37242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2022-11-16 20:00:16,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8901 Valid, 67 Invalid, 48239 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [10997 Valid, 37242 Invalid, 0 Unknown, 0 Unchecked, 23.8s Time] [2022-11-16 20:00:16,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-11-16 20:00:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 641. [2022-11-16 20:00:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 639 states have (on average 1.05320813771518) internal successors, (673), 640 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:00:16,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 673 transitions. [2022-11-16 20:00:16,426 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 673 transitions. Word has length 319 [2022-11-16 20:00:16,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:00:16,427 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 673 transitions. [2022-11-16 20:00:16,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 512 states, 511 states have (on average 1.8669275929549902) internal successors, (954), 512 states have internal predecessors, (954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:00:16,428 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 673 transitions. [2022-11-16 20:00:16,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2022-11-16 20:00:16,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:00:16,431 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 95, 94, 94, 1, 1, 1] [2022-11-16 20:00:16,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-16 20:00:16,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:00:16,640 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:00:16,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:00:16,640 INFO L85 PathProgramCache]: Analyzing trace with hash 865256541, now seen corresponding path program 6 times [2022-11-16 20:00:16,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:00:16,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291653586] [2022-11-16 20:00:16,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:00:16,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:00:16,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:00:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:00:23,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:00:23,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291653586] [2022-11-16 20:00:23,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291653586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:00:23,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891439239] [2022-11-16 20:00:23,990 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 20:00:23,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:00:23,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:00:23,991 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:00:23,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 20:00:24,187 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 20:00:24,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 20:00:24,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 1074 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-16 20:00:24,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:00:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:00:24,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 20:00:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 22231 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:00:36,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891439239] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 20:00:36,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [318756727] [2022-11-16 20:00:36,286 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-16 20:00:36,286 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 20:00:36,286 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 20:00:36,286 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 20:00:36,286 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 20:00:36,405 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 20:00:54,121 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17908#(and (<= |ULTIMATE.start_main_~n~0#1| 2147483647) (<= |ULTIMATE.start_main_~k~0#1| 2147483646) (< 2147483645 |ULTIMATE.start_main_~i~0#1|) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~n~0#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 20:00:54,121 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 20:00:54,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 20:00:54,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2022-11-16 20:00:54,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130125544] [2022-11-16 20:00:54,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 20:00:54,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-16 20:00:54,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 20:00:54,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-16 20:00:54,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18352, Invalid=20654, Unknown=0, NotChecked=0, Total=39006 [2022-11-16 20:00:54,128 INFO L87 Difference]: Start difference. First operand 641 states and 673 transitions. Second operand has 192 states, 191 states have (on average 4.979057591623037) internal successors, (951), 192 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:00:57,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 20:00:57,175 INFO L93 Difference]: Finished difference Result 1086 states and 1181 transitions. [2022-11-16 20:00:57,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-16 20:00:57,179 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 4.979057591623037) internal successors, (951), 192 states have internal predecessors, (951), 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 476 [2022-11-16 20:00:57,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 20:00:57,185 INFO L225 Difference]: With dead ends: 1086 [2022-11-16 20:00:57,185 INFO L226 Difference]: Without dead ends: 1085 [2022-11-16 20:00:57,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1522 GetRequests, 1231 SyntacticMatches, 95 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28773 ImplicationChecksByTransitivity, 32.2s TimeCoverageRelationStatistics Valid=18352, Invalid=20654, Unknown=0, NotChecked=0, Total=39006 [2022-11-16 20:00:57,190 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 705 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 20:00:57,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 451 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 20:00:57,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1085 states. [2022-11-16 20:00:57,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1085 to 959. [2022-11-16 20:00:57,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 957 states have (on average 1.0679205851619644) internal successors, (1022), 958 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:00:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1022 transitions. [2022-11-16 20:00:57,365 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1022 transitions. Word has length 476 [2022-11-16 20:00:57,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 20:00:57,366 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1022 transitions. [2022-11-16 20:00:57,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 4.979057591623037) internal successors, (951), 192 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 20:00:57,367 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1022 transitions. [2022-11-16 20:00:57,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2022-11-16 20:00:57,373 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 20:00:57,373 INFO L195 NwaCegarLoop]: trace histogram [127, 127, 127, 127, 127, 1, 1, 1, 1] [2022-11-16 20:00:57,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 20:00:57,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:00:57,583 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-16 20:00:57,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 20:00:57,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1423742694, now seen corresponding path program 7 times [2022-11-16 20:00:57,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 20:00:57,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011209772] [2022-11-16 20:00:57,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 20:00:57,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 20:00:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:02:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:02:00,053 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 20:02:00,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011209772] [2022-11-16 20:02:00,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011209772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 20:02:00,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350381462] [2022-11-16 20:02:00,054 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 20:02:00,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 20:02:00,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 20:02:00,061 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 20:02:00,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12e7c2ad-7a20-4ce3-885b-461ae5da5a12/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 20:02:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 20:02:00,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 385 conjunts are in the unsatisfiable core [2022-11-16 20:02:00,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 20:03:15,668 INFO L134 CoverageAnalysis]: Checked inductivity of 40132 backedges. 0 proven. 40132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 20:03:15,668 INFO L328 TraceCheckSpWp]: Computing backward predicates...