./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b5b0de00a094cfc3c067192c4a42cb6740c5eeeb1cc4308b3b5e47b47532a575 --- 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-8393723 [2022-11-19 06:38:35,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:38:35,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:38:35,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:38:35,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:38:35,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:38:35,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:38:35,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:38:35,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:38:35,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:38:35,638 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:38:35,639 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:38:35,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:38:35,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:38:35,642 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:38:35,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:38:35,645 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:38:35,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:38:35,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:38:35,650 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:38:35,652 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:38:35,653 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:38:35,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:38:35,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:38:35,659 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:38:35,659 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:38:35,660 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:38:35,661 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:38:35,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:38:35,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:38:35,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:38:35,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:38:35,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:38:35,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:38:35,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:38:35,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:38:35,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:38:35,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:38:35,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:38:35,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:38:35,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:38:35,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-19 06:38:35,719 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:38:35,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:38:35,721 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:38:35,721 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:38:35,722 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:38:35,722 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:38:35,723 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:38:35,723 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:38:35,723 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:38:35,723 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:38:35,724 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:38:35,725 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:38:35,725 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:38:35,725 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:38:35,725 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:38:35,726 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:38:35,726 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:38:35,726 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:38:35,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:38:35,727 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 06:38:35,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:38:35,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:38:35,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:38:35,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:38:35,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:38:35,730 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 06:38:35,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:38:35,730 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:38:35,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:38:35,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:38:35,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:38:35,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:38:35,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:38:35,732 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:38:35,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:38:35,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:38:35,732 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:38:35,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:38:35,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:38:35,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:38:35,734 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_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5b0de00a094cfc3c067192c4a42cb6740c5eeeb1cc4308b3b5e47b47532a575 [2022-11-19 06:38:36,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:38:36,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:38:36,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:38:36,065 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:38:36,066 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:38:36,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c [2022-11-19 06:38:36,160 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/data/5148bdca3/6d813b5fd906455fb333449c7d566da9/FLAG6472368af [2022-11-19 06:38:36,586 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:38:36,587 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/sv-benchmarks/c/termination-restricted-15/b.09-no-inv_assume.c [2022-11-19 06:38:36,604 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/data/5148bdca3/6d813b5fd906455fb333449c7d566da9/FLAG6472368af [2022-11-19 06:38:36,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/data/5148bdca3/6d813b5fd906455fb333449c7d566da9 [2022-11-19 06:38:36,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:38:36,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:38:36,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:38:36,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:38:37,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:38:37,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:38:36" (1/1) ... [2022-11-19 06:38:37,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f0d4bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:37, skipping insertion in model container [2022-11-19 06:38:37,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:38:36" (1/1) ... [2022-11-19 06:38:37,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:38:37,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:38:37,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:38:37,298 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:38:37,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:38:37,332 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:38:37,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:37 WrapperNode [2022-11-19 06:38:37,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:38:37,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:38:37,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:38:37,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:38:37,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:37" (1/1) ... [2022-11-19 06:38:37,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:37" (1/1) ... [2022-11-19 06:38:37,367 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2022-11-19 06:38:37,367 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:38:37,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:38:37,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:38:37,369 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:38:37,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:37" (1/1) ... [2022-11-19 06:38:37,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:37" (1/1) ... [2022-11-19 06:38:37,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:37" (1/1) ... [2022-11-19 06:38:37,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:37" (1/1) ... [2022-11-19 06:38:37,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:37" (1/1) ... [2022-11-19 06:38:37,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:37" (1/1) ... [2022-11-19 06:38:37,388 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:37" (1/1) ... [2022-11-19 06:38:37,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:37" (1/1) ... [2022-11-19 06:38:37,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:38:37,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:38:37,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:38:37,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:38:37,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:37" (1/1) ... [2022-11-19 06:38:37,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:38:37,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:37,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:38:37,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:38:37,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:38:37,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:38:37,544 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:38:37,546 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:38:37,697 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:38:37,715 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:38:37,715 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:38:37,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:38:37 BoogieIcfgContainer [2022-11-19 06:38:37,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:38:37,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:38:37,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:38:37,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:38:37,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:38:36" (1/3) ... [2022-11-19 06:38:37,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d99de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:38:37, skipping insertion in model container [2022-11-19 06:38:37,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:38:37" (2/3) ... [2022-11-19 06:38:37,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d99de3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:38:37, skipping insertion in model container [2022-11-19 06:38:37,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:38:37" (3/3) ... [2022-11-19 06:38:37,728 INFO L112 eAbstractionObserver]: Analyzing ICFG b.09-no-inv_assume.c [2022-11-19 06:38:37,746 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:38:37,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-19 06:38:37,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:38:37,813 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;@50adabee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:38:37,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-19 06:38:37,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:37,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:38:37,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:37,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:38:37,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:38:37,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:37,834 INFO L85 PathProgramCache]: Analyzing trace with hash 65732952, now seen corresponding path program 1 times [2022-11-19 06:38:37,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:37,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19984420] [2022-11-19 06:38:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:37,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:37,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:38,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:38,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19984420] [2022-11-19 06:38:38,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19984420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:38,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:38,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:38:38,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676884777] [2022-11-19 06:38:38,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:38,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:38,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:38,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:38,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:38,134 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:38,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:38,207 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2022-11-19 06:38:38,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:38,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:38:38,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:38,232 INFO L225 Difference]: With dead ends: 25 [2022-11-19 06:38:38,233 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 06:38:38,236 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 [2022-11-19 06:38:38,239 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:38,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 17 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:38:38,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 06:38:38,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2022-11-19 06:38:38,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 16 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) [2022-11-19 06:38:38,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-19 06:38:38,272 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 5 [2022-11-19 06:38:38,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:38,273 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-19 06:38:38,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:38,273 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-19 06:38:38,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 06:38:38,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:38,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 06:38:38,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:38:38,275 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:38:38,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:38,275 INFO L85 PathProgramCache]: Analyzing trace with hash 65733009, now seen corresponding path program 1 times [2022-11-19 06:38:38,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:38,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368646565] [2022-11-19 06:38:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:38,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:38,304 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:38,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368646565] [2022-11-19 06:38:38,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368646565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:38,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:38,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:38:38,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100807161] [2022-11-19 06:38:38,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:38,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:38,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:38,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:38,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:38,308 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:38,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:38,325 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2022-11-19 06:38:38,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:38,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 06:38:38,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:38,327 INFO L225 Difference]: With dead ends: 17 [2022-11-19 06:38:38,327 INFO L226 Difference]: Without dead ends: 16 [2022-11-19 06:38:38,327 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 [2022-11-19 06:38:38,329 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:38,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:38:38,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-19 06:38:38,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-19 06:38:38,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:38,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-19 06:38:38,334 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 5 [2022-11-19 06:38:38,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:38,335 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-19 06:38:38,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:38,335 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-11-19 06:38:38,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:38:38,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:38,336 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:38:38,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:38:38,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:38:38,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:38,337 INFO L85 PathProgramCache]: Analyzing trace with hash 2037721570, now seen corresponding path program 1 times [2022-11-19 06:38:38,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:38,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803948977] [2022-11-19 06:38:38,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:38,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:38,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:38,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:38,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803948977] [2022-11-19 06:38:38,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803948977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:38,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:38,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 06:38:38,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978503335] [2022-11-19 06:38:38,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:38,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:38,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:38,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:38,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:38,374 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:38,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:38,385 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2022-11-19 06:38:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:38,386 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 [2022-11-19 06:38:38,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:38,386 INFO L225 Difference]: With dead ends: 16 [2022-11-19 06:38:38,387 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 06:38:38,387 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 [2022-11-19 06:38:38,389 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:38,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:38:38,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 06:38:38,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-19 06:38:38,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 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) [2022-11-19 06:38:38,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-11-19 06:38:38,394 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 6 [2022-11-19 06:38:38,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:38,394 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-11-19 06:38:38,395 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) [2022-11-19 06:38:38,395 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-11-19 06:38:38,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:38:38,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:38,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:38:38,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:38:38,396 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:38:38,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:38,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2037723332, now seen corresponding path program 1 times [2022-11-19 06:38:38,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:38,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431357449] [2022-11-19 06:38:38,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:38,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:38,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:38,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431357449] [2022-11-19 06:38:38,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431357449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:38,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:38,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:38:38,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579027360] [2022-11-19 06:38:38,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:38,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:38,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:38,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:38,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:38,443 INFO L87 Difference]: Start difference. First operand 15 states and 18 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) [2022-11-19 06:38:38,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:38,482 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-11-19 06:38:38,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:38,483 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 [2022-11-19 06:38:38,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:38,484 INFO L225 Difference]: With dead ends: 16 [2022-11-19 06:38:38,484 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 06:38:38,485 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 [2022-11-19 06:38:38,486 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:38,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:38:38,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 06:38:38,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-19 06:38:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 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) [2022-11-19 06:38:38,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-11-19 06:38:38,500 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2022-11-19 06:38:38,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:38,500 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-11-19 06:38:38,500 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) [2022-11-19 06:38:38,501 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-11-19 06:38:38,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 06:38:38,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:38,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-19 06:38:38,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:38:38,505 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:38:38,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:38,506 INFO L85 PathProgramCache]: Analyzing trace with hash 695574003, now seen corresponding path program 1 times [2022-11-19 06:38:38,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:38,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041121127] [2022-11-19 06:38:38,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:38,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:38,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:38,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:38,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041121127] [2022-11-19 06:38:38,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041121127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:38,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:38:38,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:38:38,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716235389] [2022-11-19 06:38:38,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:38,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:38:38,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:38,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:38:38,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:38,565 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:38,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:38,587 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-11-19 06:38:38,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:38:38,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-19 06:38:38,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:38,588 INFO L225 Difference]: With dead ends: 23 [2022-11-19 06:38:38,588 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 06:38:38,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:38:38,590 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:38,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 7 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:38:38,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 06:38:38,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-19 06:38:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-19 06:38:38,596 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 9 [2022-11-19 06:38:38,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:38,597 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-19 06:38:38,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-19 06:38:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 06:38:38,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:38,598 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:38,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 06:38:38,599 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:38:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:38,600 INFO L85 PathProgramCache]: Analyzing trace with hash 87959433, now seen corresponding path program 1 times [2022-11-19 06:38:38,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:38,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392303192] [2022-11-19 06:38:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:38,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:38,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:38,651 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:38,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392303192] [2022-11-19 06:38:38,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392303192] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:38:38,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006024626] [2022-11-19 06:38:38,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:38,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:38,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:38,656 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:38,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:38:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:38,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:38:38,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:38,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:38,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006024626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:38,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [512621979] [2022-11-19 06:38:38,916 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:38:38,917 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:38:38,920 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:38:38,926 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:38:38,927 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:38:39,135 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:38:39,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [512621979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:38:39,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:38:39,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3, 3] total 9 [2022-11-19 06:38:39,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620776026] [2022-11-19 06:38:39,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:38:39,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:38:39,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:38:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:38:39,480 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:39,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:39,641 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2022-11-19 06:38:39,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 06:38:39,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 06:38:39,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:39,642 INFO L225 Difference]: With dead ends: 23 [2022-11-19 06:38:39,642 INFO L226 Difference]: Without dead ends: 22 [2022-11-19 06:38:39,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2022-11-19 06:38:39,644 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:39,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:38:39,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-19 06:38:39,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-11-19 06:38:39,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2022-11-19 06:38:39,649 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 10 [2022-11-19 06:38:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:39,649 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2022-11-19 06:38:39,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:39,649 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2022-11-19 06:38:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 06:38:39,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:39,650 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:39,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:39,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:39,856 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:38:39,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:39,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1568224817, now seen corresponding path program 1 times [2022-11-19 06:38:39,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:39,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575751605] [2022-11-19 06:38:39,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:39,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:39,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:39,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:39,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575751605] [2022-11-19 06:38:39,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575751605] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:38:39,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197644692] [2022-11-19 06:38:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:39,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:39,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:39,940 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:39,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:38:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:39,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:38:39,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:40,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:40,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:40,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197644692] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:40,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1758899080] [2022-11-19 06:38:40,046 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:38:40,046 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:38:40,047 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:38:40,047 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:38:40,047 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:38:40,266 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:38:40,579 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '414#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-19 06:38:40,580 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:38:40,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:38:40,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-11-19 06:38:40,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371816180] [2022-11-19 06:38:40,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:38:40,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:38:40,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:40,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:38:40,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-19 06:38:40,582 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2022-11-19 06:38:40,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:40,619 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2022-11-19 06:38:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:38:40,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 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) Word has length 11 [2022-11-19 06:38:40,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:40,620 INFO L225 Difference]: With dead ends: 43 [2022-11-19 06:38:40,620 INFO L226 Difference]: Without dead ends: 42 [2022-11-19 06:38:40,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-11-19 06:38:40,622 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:40,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 28 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:38:40,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-19 06:38:40,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2022-11-19 06:38:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.162162162162162) internal successors, (43), 38 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) [2022-11-19 06:38:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2022-11-19 06:38:40,629 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 11 [2022-11-19 06:38:40,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:40,630 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2022-11-19 06:38:40,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2022-11-19 06:38:40,630 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2022-11-19 06:38:40,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 06:38:40,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:40,631 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-19 06:38:40,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 06:38:40,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:40,837 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:38:40,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:40,838 INFO L85 PathProgramCache]: Analyzing trace with hash -605289875, now seen corresponding path program 1 times [2022-11-19 06:38:40,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:40,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834013315] [2022-11-19 06:38:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:40,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:40,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:40,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834013315] [2022-11-19 06:38:40,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834013315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:38:40,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334946116] [2022-11-19 06:38:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:40,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:40,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:40,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:40,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:38:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:40,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:38:40,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:41,002 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:41,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:41,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:41,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334946116] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:41,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [935193603] [2022-11-19 06:38:41,047 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:38:41,047 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:38:41,048 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:38:41,048 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:38:41,048 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:38:41,200 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:38:41,563 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '587#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_~x~0#1|) 0))' at error location [2022-11-19 06:38:41,563 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:38:41,563 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:38:41,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-11-19 06:38:41,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286051639] [2022-11-19 06:38:41,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:38:41,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:38:41,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:41,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:38:41,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-19 06:38:41,565 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:41,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:41,605 INFO L93 Difference]: Finished difference Result 60 states and 66 transitions. [2022-11-19 06:38:41,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:38:41,606 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-19 06:38:41,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:41,607 INFO L225 Difference]: With dead ends: 60 [2022-11-19 06:38:41,607 INFO L226 Difference]: Without dead ends: 59 [2022-11-19 06:38:41,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-19 06:38:41,608 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:41,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 17 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:38:41,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-19 06:38:41,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2022-11-19 06:38:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 57 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) [2022-11-19 06:38:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2022-11-19 06:38:41,616 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 12 [2022-11-19 06:38:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:41,616 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2022-11-19 06:38:41,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:41,617 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2022-11-19 06:38:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 06:38:41,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:41,617 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-19 06:38:41,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:41,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 06:38:41,824 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:38:41,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1674580338, now seen corresponding path program 1 times [2022-11-19 06:38:41,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:41,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894221682] [2022-11-19 06:38:41,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:41,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:41,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:41,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894221682] [2022-11-19 06:38:41,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894221682] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:38:41,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705010340] [2022-11-19 06:38:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:41,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:41,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:41,892 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:41,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:38:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:41,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 06:38:41,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:41,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:41,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:42,032 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:42,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705010340] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:42,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [889149589] [2022-11-19 06:38:42,035 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:38:42,035 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:38:42,036 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:38:42,036 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:38:42,036 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:38:42,189 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:38:42,565 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '828#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~c~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< (+ 2147483647 |ULTIMATE.start_main_~x~0#1|) 0))' at error location [2022-11-19 06:38:42,565 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:38:42,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:38:42,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-19 06:38:42,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257210517] [2022-11-19 06:38:42,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:38:42,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:38:42,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:42,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:38:42,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-19 06:38:42,567 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:42,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:42,606 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2022-11-19 06:38:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:38:42,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 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 16 [2022-11-19 06:38:42,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:42,608 INFO L225 Difference]: With dead ends: 58 [2022-11-19 06:38:42,608 INFO L226 Difference]: Without dead ends: 57 [2022-11-19 06:38:42,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-11-19 06:38:42,609 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:42,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 7 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:38:42,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-19 06:38:42,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 32. [2022-11-19 06:38:42,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2022-11-19 06:38:42,621 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 16 [2022-11-19 06:38:42,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:42,621 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2022-11-19 06:38:42,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:42,622 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2022-11-19 06:38:42,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 06:38:42,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:42,623 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2022-11-19 06:38:42,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:42,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-19 06:38:42,828 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:38:42,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:42,829 INFO L85 PathProgramCache]: Analyzing trace with hash -457759820, now seen corresponding path program 2 times [2022-11-19 06:38:42,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:42,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147333569] [2022-11-19 06:38:42,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:42,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:42,962 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:42,962 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:42,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147333569] [2022-11-19 06:38:42,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147333569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:38:42,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115866137] [2022-11-19 06:38:42,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:38:42,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:42,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:42,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:42,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 06:38:43,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-19 06:38:43,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:38:43,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:38:43,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:43,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:43,160 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:43,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115866137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:43,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [566642565] [2022-11-19 06:38:43,163 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:38:43,163 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:38:43,164 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:38:43,164 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:38:43,164 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:38:43,279 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:38:43,687 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1123#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-19 06:38:43,687 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:38:43,687 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:38:43,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-19 06:38:43,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136244343] [2022-11-19 06:38:43,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:38:43,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 06:38:43,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:43,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 06:38:43,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2022-11-19 06:38:43,689 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:43,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:43,735 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2022-11-19 06:38:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 06:38:43,736 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 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 29 [2022-11-19 06:38:43,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:43,737 INFO L225 Difference]: With dead ends: 69 [2022-11-19 06:38:43,737 INFO L226 Difference]: Without dead ends: 68 [2022-11-19 06:38:43,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2022-11-19 06:38:43,738 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 41 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:43,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 47 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:38:43,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-19 06:38:43,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-11-19 06:38:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2022-11-19 06:38:43,746 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 29 [2022-11-19 06:38:43,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:43,746 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2022-11-19 06:38:43,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2022-11-19 06:38:43,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 06:38:43,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:43,748 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 1, 1, 1, 1] [2022-11-19 06:38:43,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:43,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 06:38:43,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:38:43,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:43,954 INFO L85 PathProgramCache]: Analyzing trace with hash 136624574, now seen corresponding path program 3 times [2022-11-19 06:38:43,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:43,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793283561] [2022-11-19 06:38:43,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:43,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:44,268 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:44,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:44,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793283561] [2022-11-19 06:38:44,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793283561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:38:44,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999450019] [2022-11-19 06:38:44,269 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:38:44,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:44,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:44,270 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:44,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 06:38:44,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:38:44,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:38:44,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:38:44,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:44,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:44,862 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:44,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999450019] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:44,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [904786430] [2022-11-19 06:38:44,864 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:38:44,864 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:38:44,865 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:38:44,865 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:38:44,865 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:38:44,980 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:38:45,550 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1697#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-19 06:38:45,550 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:38:45,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:38:45,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-19 06:38:45,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243887011] [2022-11-19 06:38:45,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:38:45,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 06:38:45,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:45,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 06:38:45,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2022-11-19 06:38:45,552 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:45,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:45,656 INFO L93 Difference]: Finished difference Result 141 states and 153 transitions. [2022-11-19 06:38:45,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-19 06:38:45,657 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 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 65 [2022-11-19 06:38:45,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:45,658 INFO L225 Difference]: With dead ends: 141 [2022-11-19 06:38:45,658 INFO L226 Difference]: Without dead ends: 140 [2022-11-19 06:38:45,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 165 SyntacticMatches, 10 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=318, Invalid=612, Unknown=0, NotChecked=0, Total=930 [2022-11-19 06:38:45,659 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 78 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:45,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 95 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:38:45,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-19 06:38:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-11-19 06:38:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.014388489208633) internal successors, (141), 139 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2022-11-19 06:38:45,670 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 65 [2022-11-19 06:38:45,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:45,671 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2022-11-19 06:38:45,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 23 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:45,672 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2022-11-19 06:38:45,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-19 06:38:45,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:45,675 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 1, 1, 1, 1] [2022-11-19 06:38:45,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:45,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-19 06:38:45,881 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:38:45,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:45,881 INFO L85 PathProgramCache]: Analyzing trace with hash 298594002, now seen corresponding path program 4 times [2022-11-19 06:38:45,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:45,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131896071] [2022-11-19 06:38:45,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:45,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:46,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:46,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131896071] [2022-11-19 06:38:46,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131896071] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:38:46,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338325506] [2022-11-19 06:38:46,766 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:38:46,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:46,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:46,768 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:46,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 06:38:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:46,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 06:38:46,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:47,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:47,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:48,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338325506] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:48,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1112236792] [2022-11-19 06:38:48,115 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:38:48,115 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:38:48,115 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:38:48,116 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:38:48,116 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:38:48,241 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:38:49,446 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2895#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-19 06:38:49,447 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:38:49,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:38:49,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-19 06:38:49,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436252422] [2022-11-19 06:38:49,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:38:49,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-19 06:38:49,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:38:49,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-19 06:38:49,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1194, Invalid=1776, Unknown=0, NotChecked=0, Total=2970 [2022-11-19 06:38:49,450 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:49,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:38:49,628 INFO L93 Difference]: Finished difference Result 285 states and 309 transitions. [2022-11-19 06:38:49,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-19 06:38:49,629 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 0 states have call successors, (0), 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 137 [2022-11-19 06:38:49,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:38:49,631 INFO L225 Difference]: With dead ends: 285 [2022-11-19 06:38:49,631 INFO L226 Difference]: Without dead ends: 284 [2022-11-19 06:38:49,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 357 SyntacticMatches, 22 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2041 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1194, Invalid=1776, Unknown=0, NotChecked=0, Total=2970 [2022-11-19 06:38:49,633 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 154 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:38:49,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 191 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:38:49,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-19 06:38:49,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-11-19 06:38:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.0070671378091873) internal successors, (285), 283 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:49,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 285 transitions. [2022-11-19 06:38:49,653 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 285 transitions. Word has length 137 [2022-11-19 06:38:49,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:38:49,653 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 285 transitions. [2022-11-19 06:38:49,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 47 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:38:49,654 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 285 transitions. [2022-11-19 06:38:49,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-11-19 06:38:49,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:38:49,658 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 1, 1, 1, 1] [2022-11-19 06:38:49,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 06:38:49,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-19 06:38:49,881 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:38:49,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:38:49,882 INFO L85 PathProgramCache]: Analyzing trace with hash 645020922, now seen corresponding path program 5 times [2022-11-19 06:38:49,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:38:49,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111766062] [2022-11-19 06:38:49,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:38:49,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:38:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:38:52,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:52,559 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:38:52,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111766062] [2022-11-19 06:38:52,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111766062] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:38:52,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808523435] [2022-11-19 06:38:52,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:38:52,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:38:52,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:38:52,563 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:38:52,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 06:38:52,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-19 06:38:52,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:38:52,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-19 06:38:52,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:38:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:53,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:38:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:38:56,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808523435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:38:56,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1988243078] [2022-11-19 06:38:56,654 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:38:56,654 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:38:56,655 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:38:56,655 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:38:56,655 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:38:56,781 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:39:00,017 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5341#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-19 06:39:00,017 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:39:00,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:39:00,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-19 06:39:00,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453024432] [2022-11-19 06:39:00,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:39:00,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-19 06:39:00,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:39:00,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-19 06:39:00,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4674, Invalid=5832, Unknown=0, NotChecked=0, Total=10506 [2022-11-19 06:39:00,025 INFO L87 Difference]: Start difference. First operand 284 states and 285 transitions. Second operand has 96 states, 95 states have (on average 5.91578947368421) internal successors, (562), 95 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:39:00,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:00,569 INFO L93 Difference]: Finished difference Result 573 states and 621 transitions. [2022-11-19 06:39:00,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-11-19 06:39:00,570 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.91578947368421) internal successors, (562), 95 states have internal predecessors, (562), 0 states have call successors, (0), 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 281 [2022-11-19 06:39:00,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:00,578 INFO L225 Difference]: With dead ends: 573 [2022-11-19 06:39:00,578 INFO L226 Difference]: Without dead ends: 572 [2022-11-19 06:39:00,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 741 SyntacticMatches, 46 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7561 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=4674, Invalid=5832, Unknown=0, NotChecked=0, Total=10506 [2022-11-19 06:39:00,585 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 250 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:00,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 383 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:39:00,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-11-19 06:39:00,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2022-11-19 06:39:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.0035026269702276) internal successors, (573), 571 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:39:00,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 573 transitions. [2022-11-19 06:39:00,625 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 573 transitions. Word has length 281 [2022-11-19 06:39:00,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:00,627 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 573 transitions. [2022-11-19 06:39:00,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.91578947368421) internal successors, (562), 95 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:39:00,627 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 573 transitions. [2022-11-19 06:39:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 570 [2022-11-19 06:39:00,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:00,647 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 1, 1, 1, 1] [2022-11-19 06:39:00,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-19 06:39:00,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:39:00,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:39:00,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:00,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1672812214, now seen corresponding path program 6 times [2022-11-19 06:39:00,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:39:00,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655737400] [2022-11-19 06:39:00,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:00,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:39:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:39:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 0 proven. 26508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:09,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:39:09,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655737400] [2022-11-19 06:39:09,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655737400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:39:09,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367765068] [2022-11-19 06:39:09,292 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 06:39:09,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:39:09,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:39:09,300 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:39:09,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 06:39:09,483 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 06:39:09,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:39:09,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 96 conjunts are in the unsatisfiable core [2022-11-19 06:39:09,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:39:10,375 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 0 proven. 26508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:10,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:39:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 26508 backedges. 0 proven. 26508 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:39:22,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367765068] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:39:22,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1928126662] [2022-11-19 06:39:22,128 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:39:22,128 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:39:22,129 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:39:22,129 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:39:22,129 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:39:22,215 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:39:32,841 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10283#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-19 06:39:32,841 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:39:32,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:39:32,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 190 [2022-11-19 06:39:32,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646649646] [2022-11-19 06:39:32,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:39:32,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2022-11-19 06:39:32,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:39:32,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2022-11-19 06:39:32,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18546, Invalid=20856, Unknown=0, NotChecked=0, Total=39402 [2022-11-19 06:39:32,856 INFO L87 Difference]: Start difference. First operand 572 states and 573 transitions. Second operand has 192 states, 191 states have (on average 5.958115183246074) internal successors, (1138), 191 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:39:34,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:39:34,761 INFO L93 Difference]: Finished difference Result 1149 states and 1245 transitions. [2022-11-19 06:39:34,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-11-19 06:39:34,763 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 5.958115183246074) internal successors, (1138), 191 states have internal predecessors, (1138), 0 states have call successors, (0), 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 569 [2022-11-19 06:39:34,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:39:34,767 INFO L225 Difference]: With dead ends: 1149 [2022-11-19 06:39:34,767 INFO L226 Difference]: Without dead ends: 1148 [2022-11-19 06:39:34,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1800 GetRequests, 1509 SyntacticMatches, 94 SemanticMatches, 197 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28969 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=18546, Invalid=20856, Unknown=0, NotChecked=0, Total=39402 [2022-11-19 06:39:34,772 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 594 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:39:34,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 767 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:39:34,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-11-19 06:39:34,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1148. [2022-11-19 06:39:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1148 states, 1147 states have (on average 1.001743679163034) internal successors, (1149), 1147 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:39:34,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1148 states to 1148 states and 1149 transitions. [2022-11-19 06:39:34,808 INFO L78 Accepts]: Start accepts. Automaton has 1148 states and 1149 transitions. Word has length 569 [2022-11-19 06:39:34,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:39:34,809 INFO L495 AbstractCegarLoop]: Abstraction has 1148 states and 1149 transitions. [2022-11-19 06:39:34,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 5.958115183246074) internal successors, (1138), 191 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:39:34,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1148 states and 1149 transitions. [2022-11-19 06:39:34,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1146 [2022-11-19 06:39:34,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:39:34,861 INFO L195 NwaCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 1, 1, 1, 1] [2022-11-19 06:39:34,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 06:39:35,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 06:39:35,068 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:39:35,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:39:35,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1403945450, now seen corresponding path program 7 times [2022-11-19 06:39:35,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:39:35,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094926390] [2022-11-19 06:39:35,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:39:35,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:39:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:09,524 INFO L134 CoverageAnalysis]: Checked inductivity of 108300 backedges. 0 proven. 108300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:09,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:40:09,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094926390] [2022-11-19 06:40:09,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094926390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:40:09,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514864074] [2022-11-19 06:40:09,525 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 06:40:09,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:40:09,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:40:09,531 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:40:09,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 06:40:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:40:09,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 1915 conjuncts, 192 conjunts are in the unsatisfiable core [2022-11-19 06:40:09,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:40:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 108300 backedges. 0 proven. 108300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:11,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:40:56,247 INFO L134 CoverageAnalysis]: Checked inductivity of 108300 backedges. 0 proven. 108300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:40:56,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514864074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:40:56,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [769399944] [2022-11-19 06:40:56,250 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:40:56,250 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:40:56,250 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:40:56,251 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:40:56,251 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:40:56,323 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:41:34,729 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20217#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-19 06:41:34,729 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:41:34,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:41:34,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 382 [2022-11-19 06:41:34,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122640669] [2022-11-19 06:41:34,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:41:34,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2022-11-19 06:41:34,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:41:34,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2022-11-19 06:41:34,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73938, Invalid=78552, Unknown=0, NotChecked=0, Total=152490 [2022-11-19 06:41:34,764 INFO L87 Difference]: Start difference. First operand 1148 states and 1149 transitions. Second operand has 384 states, 383 states have (on average 5.97911227154047) internal successors, (2290), 383 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:41:44,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:41:44,631 INFO L93 Difference]: Finished difference Result 2301 states and 2493 transitions. [2022-11-19 06:41:44,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-11-19 06:41:44,633 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 383 states have (on average 5.97911227154047) internal successors, (2290), 383 states have internal predecessors, (2290), 0 states have call successors, (0), 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 1145 [2022-11-19 06:41:44,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:41:44,641 INFO L225 Difference]: With dead ends: 2301 [2022-11-19 06:41:44,642 INFO L226 Difference]: Without dead ends: 2300 [2022-11-19 06:41:44,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3624 GetRequests, 3045 SyntacticMatches, 190 SemanticMatches, 389 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113257 ImplicationChecksByTransitivity, 95.9s TimeCoverageRelationStatistics Valid=73938, Invalid=78552, Unknown=0, NotChecked=0, Total=152490 [2022-11-19 06:41:44,654 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 979 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:41:44,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 1535 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 06:41:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2022-11-19 06:41:44,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2300. [2022-11-19 06:41:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2299 states have (on average 1.0008699434536754) internal successors, (2301), 2299 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:41:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 2301 transitions. [2022-11-19 06:41:44,722 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 2301 transitions. Word has length 1145 [2022-11-19 06:41:44,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:41:44,724 INFO L495 AbstractCegarLoop]: Abstraction has 2300 states and 2301 transitions. [2022-11-19 06:41:44,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 383 states have (on average 5.97911227154047) internal successors, (2290), 383 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:41:44,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 2301 transitions. [2022-11-19 06:41:44,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2298 [2022-11-19 06:41:44,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:41:44,763 INFO L195 NwaCegarLoop]: trace histogram [383, 382, 382, 382, 382, 382, 1, 1, 1, 1] [2022-11-19 06:41:44,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 06:41:44,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-19 06:41:44,964 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:41:44,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:41:44,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1119964374, now seen corresponding path program 8 times [2022-11-19 06:41:44,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:41:44,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275866050] [2022-11-19 06:41:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:41:44,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:41:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:44:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 437772 backedges. 0 proven. 437772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:44:36,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:44:36,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275866050] [2022-11-19 06:44:36,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275866050] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:44:36,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758337266] [2022-11-19 06:44:36,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 06:44:36,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:44:36,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:44:36,451 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:44:36,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 06:44:53,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 383 check-sat command(s) [2022-11-19 06:44:53,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 06:44:53,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 3835 conjuncts, 384 conjunts are in the unsatisfiable core [2022-11-19 06:44:53,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:44:57,014 INFO L134 CoverageAnalysis]: Checked inductivity of 437772 backedges. 0 proven. 437772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:44:57,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:47:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 437772 backedges. 0 proven. 437772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:47:59,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758337266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:47:59,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [479285634] [2022-11-19 06:47:59,380 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-11-19 06:47:59,380 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 06:47:59,381 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 06:47:59,381 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 06:47:59,381 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 06:47:59,471 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 06:50:26,203 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40135#(and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2147483646) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (< 2147483646 |ULTIMATE.start_main_~c~0#1|))' at error location [2022-11-19 06:50:26,204 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 06:50:26,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 06:50:26,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [383, 383, 383] total 766 [2022-11-19 06:50:26,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846383503] [2022-11-19 06:50:26,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 06:50:26,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 768 states [2022-11-19 06:50:26,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:26,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 768 interpolants. [2022-11-19 06:50:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295314, Invalid=304536, Unknown=0, NotChecked=0, Total=599850 [2022-11-19 06:50:26,302 INFO L87 Difference]: Start difference. First operand 2300 states and 2301 transitions. Second operand has 768 states, 767 states have (on average 5.989569752281617) internal successors, (4594), 767 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:37,567 INFO L93 Difference]: Finished difference Result 4605 states and 4989 transitions. [2022-11-19 06:51:37,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2022-11-19 06:51:37,569 INFO L78 Accepts]: Start accepts. Automaton has has 768 states, 767 states have (on average 5.989569752281617) internal successors, (4594), 767 states have internal predecessors, (4594), 0 states have call successors, (0), 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 2297 [2022-11-19 06:51:37,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:37,584 INFO L225 Difference]: With dead ends: 4605 [2022-11-19 06:51:37,584 INFO L226 Difference]: Without dead ends: 4604 [2022-11-19 06:51:37,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7272 GetRequests, 6117 SyntacticMatches, 382 SemanticMatches, 773 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447721 ImplicationChecksByTransitivity, 384.0s TimeCoverageRelationStatistics Valid=295314, Invalid=304536, Unknown=0, NotChecked=0, Total=599850 [2022-11-19 06:51:37,617 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2316 mSDsluCounter, 3064 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2316 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:37,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2316 Valid, 3071 Invalid, 1929 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [390 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-19 06:51:37,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4604 states. [2022-11-19 06:51:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4604 to 4604. [2022-11-19 06:51:37,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4603 states have (on average 1.0004344992396264) internal successors, (4605), 4603 states have internal predecessors, (4605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 4605 transitions. [2022-11-19 06:51:37,735 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 4605 transitions. Word has length 2297 [2022-11-19 06:51:37,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:37,738 INFO L495 AbstractCegarLoop]: Abstraction has 4604 states and 4605 transitions. [2022-11-19 06:51:37,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 768 states, 767 states have (on average 5.989569752281617) internal successors, (4594), 767 states have internal predecessors, (4594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:51:37,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 4605 transitions. [2022-11-19 06:51:37,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4602 [2022-11-19 06:51:37,996 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:37,997 INFO L195 NwaCegarLoop]: trace histogram [767, 766, 766, 766, 766, 766, 1, 1, 1, 1] [2022-11-19 06:51:38,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 06:51:38,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_66e03b85-e2b2-4348-aa64-24043e9642af/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-19 06:51:38,210 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-19 06:51:38,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:38,211 INFO L85 PathProgramCache]: Analyzing trace with hash -612166230, now seen corresponding path program 9 times [2022-11-19 06:51:38,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:38,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611624549] [2022-11-19 06:51:38,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:38,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat