./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/twisted.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/twisted.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 07:47:00,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 07:47:00,483 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 07:47:00,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 07:47:00,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 07:47:00,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 07:47:00,498 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 07:47:00,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 07:47:00,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 07:47:00,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 07:47:00,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 07:47:00,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 07:47:00,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 07:47:00,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 07:47:00,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 07:47:00,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 07:47:00,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 07:47:00,506 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 07:47:00,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 07:47:00,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 07:47:00,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 07:47:00,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 07:47:00,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 07:47:00,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 07:47:00,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 07:47:00,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 07:47:00,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 07:47:00,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 07:47:00,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 07:47:00,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 07:47:00,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 07:47:00,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 07:47:00,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 07:47:00,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 07:47:00,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 07:47:00,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 07:47:00,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 07:47:00,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 07:47:00,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 07:47:00,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 07:47:00,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 07:47:00,521 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-12-14 07:47:00,536 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 07:47:00,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 07:47:00,536 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 07:47:00,543 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 07:47:00,543 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 07:47:00,543 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 07:47:00,544 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 07:47:00,544 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 07:47:00,544 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 07:47:00,544 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 07:47:00,544 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 07:47:00,545 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 07:47:00,545 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 07:47:00,545 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 07:47:00,545 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 07:47:00,545 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 07:47:00,545 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 07:47:00,546 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 07:47:00,546 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 07:47:00,546 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 07:47:00,547 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 07:47:00,547 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 07:47:00,547 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 07:47:00,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 07:47:00,547 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 07:47:00,547 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 07:47:00,548 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 07:47:00,548 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 07:47:00,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 07:47:00,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 07:47:00,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 07:47:00,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:47:00,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 07:47:00,549 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 07:47:00,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 07:47:00,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 07:47:00,549 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 07:47:00,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 07:47:00,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 07:47:00,550 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 07:47:00,550 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_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b68c797f7da07f29717590596e5fa31674f85e16d7b32a9335da92aff43a272 [2022-12-14 07:47:00,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 07:47:00,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 07:47:00,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 07:47:00,768 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 07:47:00,768 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 07:47:00,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/termination-numeric/twisted.c [2022-12-14 07:47:03,392 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 07:47:03,509 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 07:47:03,510 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/sv-benchmarks/c/termination-numeric/twisted.c [2022-12-14 07:47:03,513 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/data/0b7be3996/fc9a1dad8be6470785a0191c81f5a10f/FLAG4ed82644b [2022-12-14 07:47:03,523 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/data/0b7be3996/fc9a1dad8be6470785a0191c81f5a10f [2022-12-14 07:47:03,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 07:47:03,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 07:47:03,528 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 07:47:03,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 07:47:03,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 07:47:03,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:47:03" (1/1) ... [2022-12-14 07:47:03,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ded5ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:47:03, skipping insertion in model container [2022-12-14 07:47:03,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:47:03" (1/1) ... [2022-12-14 07:47:03,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 07:47:03,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 07:47:03,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:47:03,682 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 07:47:03,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 07:47:03,702 INFO L208 MainTranslator]: Completed translation [2022-12-14 07:47:03,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:47:03 WrapperNode [2022-12-14 07:47:03,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 07:47:03,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 07:47:03,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 07:47:03,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 07:47:03,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:47:03" (1/1) ... [2022-12-14 07:47:03,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:47:03" (1/1) ... [2022-12-14 07:47:03,724 INFO L138 Inliner]: procedures = 5, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 45 [2022-12-14 07:47:03,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 07:47:03,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 07:47:03,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 07:47:03,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 07:47:03,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:47:03" (1/1) ... [2022-12-14 07:47:03,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:47:03" (1/1) ... [2022-12-14 07:47:03,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:47:03" (1/1) ... [2022-12-14 07:47:03,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:47:03" (1/1) ... [2022-12-14 07:47:03,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:47:03" (1/1) ... [2022-12-14 07:47:03,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:47:03" (1/1) ... [2022-12-14 07:47:03,738 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:47:03" (1/1) ... [2022-12-14 07:47:03,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:47:03" (1/1) ... [2022-12-14 07:47:03,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 07:47:03,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 07:47:03,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 07:47:03,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 07:47:03,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:47:03" (1/1) ... [2022-12-14 07:47:03,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 07:47:03,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:03,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 07:47:03,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 07:47:03,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 07:47:03,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 07:47:03,843 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 07:47:03,844 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 07:47:03,935 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 07:47:03,950 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 07:47:03,950 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 07:47:03,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:47:03 BoogieIcfgContainer [2022-12-14 07:47:03,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 07:47:03,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 07:47:03,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 07:47:03,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 07:47:03,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:47:03" (1/3) ... [2022-12-14 07:47:03,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c857287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:47:03, skipping insertion in model container [2022-12-14 07:47:03,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:47:03" (2/3) ... [2022-12-14 07:47:03,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c857287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:47:03, skipping insertion in model container [2022-12-14 07:47:03,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:47:03" (3/3) ... [2022-12-14 07:47:03,959 INFO L112 eAbstractionObserver]: Analyzing ICFG twisted.c [2022-12-14 07:47:03,974 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 07:47:03,975 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-14 07:47:04,012 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 07:47:04,017 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;@613bebf6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 07:47:04,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-14 07:47:04,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 07:47:04,025 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:04,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 07:47:04,026 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:04,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:04,030 INFO L85 PathProgramCache]: Analyzing trace with hash 2584514, now seen corresponding path program 1 times [2022-12-14 07:47:04,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:04,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148730165] [2022-12-14 07:47:04,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:04,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:04,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:04,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:04,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148730165] [2022-12-14 07:47:04,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148730165] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:04,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:47:04,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:47:04,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092766271] [2022-12-14 07:47:04,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:04,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 07:47:04,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 07:47:04,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:47:04,157 INFO L87 Difference]: Start difference. First operand has 20 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:04,174 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2022-12-14 07:47:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 07:47:04,176 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 07:47:04,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:04,182 INFO L225 Difference]: With dead ends: 39 [2022-12-14 07:47:04,182 INFO L226 Difference]: Without dead ends: 19 [2022-12-14 07:47:04,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 07:47:04,186 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:04,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:47:04,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-14 07:47:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-12-14 07:47:04,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-12-14 07:47:04,211 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 4 [2022-12-14 07:47:04,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:04,211 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-12-14 07:47:04,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,211 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-12-14 07:47:04,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 07:47:04,212 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:04,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 07:47:04,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 07:47:04,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:04,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:04,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2568145, now seen corresponding path program 1 times [2022-12-14 07:47:04,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:04,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353124085] [2022-12-14 07:47:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:04,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:04,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:04,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353124085] [2022-12-14 07:47:04,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353124085] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:04,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:47:04,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:47:04,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33532646] [2022-12-14 07:47:04,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:04,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:47:04,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:04,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:47:04,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:47:04,261 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:04,298 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2022-12-14 07:47:04,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:47:04,298 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 07:47:04,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:04,299 INFO L225 Difference]: With dead ends: 19 [2022-12-14 07:47:04,299 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 07:47:04,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:47:04,300 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:04,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 16 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:47:04,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 07:47:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-14 07:47:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 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) [2022-12-14 07:47:04,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-12-14 07:47:04,304 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 4 [2022-12-14 07:47:04,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:04,304 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-12-14 07:47:04,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-12-14 07:47:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 07:47:04,304 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:04,305 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 07:47:04,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 07:47:04,305 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:04,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:04,305 INFO L85 PathProgramCache]: Analyzing trace with hash 79612540, now seen corresponding path program 1 times [2022-12-14 07:47:04,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:04,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476804240] [2022-12-14 07:47:04,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:04,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:04,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:04,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476804240] [2022-12-14 07:47:04,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476804240] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:04,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:47:04,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:47:04,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68251131] [2022-12-14 07:47:04,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:04,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:47:04,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:04,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:47:04,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:47:04,342 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:04,407 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-12-14 07:47:04,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:47:04,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 07:47:04,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:04,409 INFO L225 Difference]: With dead ends: 34 [2022-12-14 07:47:04,409 INFO L226 Difference]: Without dead ends: 33 [2022-12-14 07:47:04,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:47:04,410 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 15 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:04,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 31 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:47:04,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-14 07:47:04,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2022-12-14 07:47:04,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 26 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-12-14 07:47:04,418 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 5 [2022-12-14 07:47:04,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:04,418 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-12-14 07:47:04,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,418 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-12-14 07:47:04,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 07:47:04,419 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:04,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 07:47:04,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 07:47:04,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:04,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:04,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1827025136, now seen corresponding path program 1 times [2022-12-14 07:47:04,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:04,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533366132] [2022-12-14 07:47:04,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:04,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:04,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:04,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:04,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533366132] [2022-12-14 07:47:04,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533366132] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:04,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:47:04,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:47:04,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036371045] [2022-12-14 07:47:04,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:04,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:47:04,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:04,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:47:04,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:47:04,461 INFO L87 Difference]: Start difference. First operand 27 states and 35 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) [2022-12-14 07:47:04,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:04,492 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2022-12-14 07:47:04,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:47:04,493 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 [2022-12-14 07:47:04,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:04,493 INFO L225 Difference]: With dead ends: 40 [2022-12-14 07:47:04,493 INFO L226 Difference]: Without dead ends: 39 [2022-12-14 07:47:04,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:47:04,494 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:04,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:47:04,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-14 07:47:04,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-12-14 07:47:04,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 31 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 42 transitions. [2022-12-14 07:47:04,501 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 42 transitions. Word has length 6 [2022-12-14 07:47:04,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:04,501 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 42 transitions. [2022-12-14 07:47:04,501 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) [2022-12-14 07:47:04,501 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 42 transitions. [2022-12-14 07:47:04,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 07:47:04,501 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:04,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 07:47:04,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 07:47:04,502 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:04,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:04,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1827025086, now seen corresponding path program 1 times [2022-12-14 07:47:04,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:04,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484061679] [2022-12-14 07:47:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:04,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:04,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:04,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:04,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484061679] [2022-12-14 07:47:04,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484061679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:04,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:47:04,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:47:04,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125422399] [2022-12-14 07:47:04,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:04,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:47:04,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:04,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:47:04,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:47:04,533 INFO L87 Difference]: Start difference. First operand 32 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:04,554 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-12-14 07:47:04,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:47:04,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 07:47:04,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:04,555 INFO L225 Difference]: With dead ends: 32 [2022-12-14 07:47:04,555 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 07:47:04,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:47:04,556 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 17 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:04,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:47:04,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 07:47:04,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-14 07:47:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2022-12-14 07:47:04,562 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 6 [2022-12-14 07:47:04,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:04,562 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-12-14 07:47:04,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,562 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2022-12-14 07:47:04,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 07:47:04,563 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:04,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:04,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 07:47:04,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:04,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:04,563 INFO L85 PathProgramCache]: Analyzing trace with hash -803204291, now seen corresponding path program 1 times [2022-12-14 07:47:04,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:04,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188525969] [2022-12-14 07:47:04,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:04,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:04,587 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:04,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188525969] [2022-12-14 07:47:04,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188525969] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:04,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:47:04,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 07:47:04,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876124812] [2022-12-14 07:47:04,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:04,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:47:04,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:04,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:47:04,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:47:04,589 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:04,618 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-12-14 07:47:04,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:47:04,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 07:47:04,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:04,619 INFO L225 Difference]: With dead ends: 38 [2022-12-14 07:47:04,619 INFO L226 Difference]: Without dead ends: 35 [2022-12-14 07:47:04,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:47:04,621 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:04,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 20 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:47:04,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-14 07:47:04,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2022-12-14 07:47:04,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-12-14 07:47:04,627 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 7 [2022-12-14 07:47:04,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:04,627 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-12-14 07:47:04,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,628 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-12-14 07:47:04,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 07:47:04,628 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:04,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:04,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 07:47:04,628 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:04,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash -803202753, now seen corresponding path program 1 times [2022-12-14 07:47:04,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:04,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068170466] [2022-12-14 07:47:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:04,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:04,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:04,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:04,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068170466] [2022-12-14 07:47:04,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068170466] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:04,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:47:04,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 07:47:04,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296187821] [2022-12-14 07:47:04,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:04,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 07:47:04,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:04,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 07:47:04,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 07:47:04,665 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:04,693 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2022-12-14 07:47:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 07:47:04,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 07:47:04,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:04,694 INFO L225 Difference]: With dead ends: 48 [2022-12-14 07:47:04,694 INFO L226 Difference]: Without dead ends: 47 [2022-12-14 07:47:04,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 07:47:04,695 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:04,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 36 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:47:04,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-14 07:47:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2022-12-14 07:47:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 38 states have (on average 1.4210526315789473) internal successors, (54), 41 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2022-12-14 07:47:04,701 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 7 [2022-12-14 07:47:04,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:04,701 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2022-12-14 07:47:04,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:04,701 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2022-12-14 07:47:04,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 07:47:04,701 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:04,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-14 07:47:04,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 07:47:04,702 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:04,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:04,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1691116137, now seen corresponding path program 1 times [2022-12-14 07:47:04,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:04,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927252981] [2022-12-14 07:47:04,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:04,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:04,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:04,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927252981] [2022-12-14 07:47:04,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927252981] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:04,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548320248] [2022-12-14 07:47:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:04,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:04,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:04,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:04,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 07:47:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:04,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 07:47:04,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:04,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:04,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:04,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:04,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548320248] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:04,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [280421936] [2022-12-14 07:47:04,872 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2022-12-14 07:47:04,872 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:04,876 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:04,881 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:04,881 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:05,089 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:05,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [280421936] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:05,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:05,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 12 [2022-12-14 07:47:05,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331633718] [2022-12-14 07:47:05,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:05,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:47:05,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:05,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:47:05,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-12-14 07:47:05,302 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:05,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:05,538 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-12-14 07:47:05,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:47:05,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 07:47:05,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:05,539 INFO L225 Difference]: With dead ends: 47 [2022-12-14 07:47:05,539 INFO L226 Difference]: Without dead ends: 42 [2022-12-14 07:47:05,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-12-14 07:47:05,541 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 17 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:05,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 35 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:47:05,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-14 07:47:05,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2022-12-14 07:47:05,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 39 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2022-12-14 07:47:05,550 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 9 [2022-12-14 07:47:05,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:05,550 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2022-12-14 07:47:05,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:05,550 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2022-12-14 07:47:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 07:47:05,551 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:05,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:05,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 07:47:05,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:05,753 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:05,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:05,755 INFO L85 PathProgramCache]: Analyzing trace with hash -950341355, now seen corresponding path program 1 times [2022-12-14 07:47:05,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:05,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491640198] [2022-12-14 07:47:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:05,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:05,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:05,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:05,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491640198] [2022-12-14 07:47:05,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491640198] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:05,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262004624] [2022-12-14 07:47:05,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:05,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:05,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:05,907 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:05,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 07:47:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:05,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 07:47:05,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:05,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:47:05,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262004624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:05,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:47:05,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 6 [2022-12-14 07:47:05,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24907315] [2022-12-14 07:47:05,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:05,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:47:05,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:05,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:47:05,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-14 07:47:05,988 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:06,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:06,047 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2022-12-14 07:47:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:47:06,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 [2022-12-14 07:47:06,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:06,048 INFO L225 Difference]: With dead ends: 47 [2022-12-14 07:47:06,048 INFO L226 Difference]: Without dead ends: 46 [2022-12-14 07:47:06,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-12-14 07:47:06,049 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 20 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:06,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 28 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:47:06,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-14 07:47:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2022-12-14 07:47:06,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:06,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-12-14 07:47:06,057 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 10 [2022-12-14 07:47:06,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:06,057 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-12-14 07:47:06,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-12-14 07:47:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 07:47:06,058 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:06,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:06,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 07:47:06,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:06,260 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:06,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:06,262 INFO L85 PathProgramCache]: Analyzing trace with hash 604189144, now seen corresponding path program 1 times [2022-12-14 07:47:06,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:06,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959064337] [2022-12-14 07:47:06,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:06,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:06,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:06,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:06,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959064337] [2022-12-14 07:47:06,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959064337] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:06,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363642549] [2022-12-14 07:47:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:06,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:06,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:06,408 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:06,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 07:47:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:06,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 07:47:06,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:06,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:06,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:06,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:06,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363642549] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:06,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1063430884] [2022-12-14 07:47:06,546 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 07:47:06,546 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:06,546 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:06,546 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:06,547 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:06,584 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:06,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1063430884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:06,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:06,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3, 3, 3] total 14 [2022-12-14 07:47:06,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009005391] [2022-12-14 07:47:06,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:06,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:47:06,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:06,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:47:06,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-12-14 07:47:06,735 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:06,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:06,792 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2022-12-14 07:47:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 07:47:06,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 07:47:06,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:06,793 INFO L225 Difference]: With dead ends: 79 [2022-12-14 07:47:06,793 INFO L226 Difference]: Without dead ends: 51 [2022-12-14 07:47:06,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-12-14 07:47:06,794 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:06,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:47:06,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-12-14 07:47:06,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2022-12-14 07:47:06,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 45 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2022-12-14 07:47:06,800 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 11 [2022-12-14 07:47:06,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:06,800 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2022-12-14 07:47:06,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:06,801 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2022-12-14 07:47:06,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 07:47:06,801 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:06,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:06,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 07:47:07,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 07:47:07,003 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:07,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:07,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2139111863, now seen corresponding path program 1 times [2022-12-14 07:47:07,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:07,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812340893] [2022-12-14 07:47:07,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:07,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:07,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:07,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812340893] [2022-12-14 07:47:07,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812340893] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:07,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121797512] [2022-12-14 07:47:07,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:07,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:07,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:07,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:07,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 07:47:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:07,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 07:47:07,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:07,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:07,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 07:47:07,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121797512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:07,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 07:47:07,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2022-12-14 07:47:07,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752853826] [2022-12-14 07:47:07,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:07,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 07:47:07,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:07,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 07:47:07,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-14 07:47:07,200 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:07,306 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2022-12-14 07:47:07,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 07:47:07,306 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 07:47:07,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:07,307 INFO L225 Difference]: With dead ends: 64 [2022-12-14 07:47:07,307 INFO L226 Difference]: Without dead ends: 63 [2022-12-14 07:47:07,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-12-14 07:47:07,308 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:07,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 35 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:47:07,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-12-14 07:47:07,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 56. [2022-12-14 07:47:07,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 55 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:07,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2022-12-14 07:47:07,319 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 13 [2022-12-14 07:47:07,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:07,319 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2022-12-14 07:47:07,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:07,320 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2022-12-14 07:47:07,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:47:07,320 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:07,320 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-14 07:47:07,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 07:47:07,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:07,523 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:07,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:07,524 INFO L85 PathProgramCache]: Analyzing trace with hash 273576529, now seen corresponding path program 1 times [2022-12-14 07:47:07,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:07,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339711372] [2022-12-14 07:47:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:07,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:07,681 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:07,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:07,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339711372] [2022-12-14 07:47:07,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339711372] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:07,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049133835] [2022-12-14 07:47:07,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:07,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:07,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:07,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:07,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 07:47:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:07,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 07:47:07,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:07,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:07,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049133835] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:07,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [219594624] [2022-12-14 07:47:07,796 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2022-12-14 07:47:07,796 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:07,797 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:07,797 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:07,797 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:07,875 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:08,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [219594624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:08,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:08,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 12 [2022-12-14 07:47:08,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205745138] [2022-12-14 07:47:08,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:08,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 07:47:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:08,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 07:47:08,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-12-14 07:47:08,101 INFO L87 Difference]: Start difference. First operand 56 states and 72 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) [2022-12-14 07:47:08,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:08,201 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2022-12-14 07:47:08,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 07:47:08,201 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 14 [2022-12-14 07:47:08,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:08,202 INFO L225 Difference]: With dead ends: 72 [2022-12-14 07:47:08,202 INFO L226 Difference]: Without dead ends: 28 [2022-12-14 07:47:08,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-12-14 07:47:08,202 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:08,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 37 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:47:08,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-14 07:47:08,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-12-14 07:47:08,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 25 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) [2022-12-14 07:47:08,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-12-14 07:47:08,206 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 14 [2022-12-14 07:47:08,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:08,206 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-12-14 07:47:08,206 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) [2022-12-14 07:47:08,206 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-12-14 07:47:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-14 07:47:08,206 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:08,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:08,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 07:47:08,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 07:47:08,408 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:08,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:08,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1887958390, now seen corresponding path program 1 times [2022-12-14 07:47:08,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:08,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046860113] [2022-12-14 07:47:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:08,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:08,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:08,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046860113] [2022-12-14 07:47:08,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046860113] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:08,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571457590] [2022-12-14 07:47:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:08,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:08,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:08,479 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:08,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 07:47:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:08,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 07:47:08,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:08,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:08,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:08,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571457590] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:08,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [30769937] [2022-12-14 07:47:08,638 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:47:08,638 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:08,639 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:08,639 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:08,639 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:08,654 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:08,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [30769937] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:08,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:08,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 19 [2022-12-14 07:47:08,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793059951] [2022-12-14 07:47:08,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:08,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 07:47:08,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:08,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 07:47:08,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2022-12-14 07:47:08,747 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:08,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:08,779 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2022-12-14 07:47:08,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 07:47:08,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-12-14 07:47:08,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:08,779 INFO L225 Difference]: With dead ends: 55 [2022-12-14 07:47:08,779 INFO L226 Difference]: Without dead ends: 36 [2022-12-14 07:47:08,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2022-12-14 07:47:08,780 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:08,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 26 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:47:08,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-14 07:47:08,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2022-12-14 07:47:08,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:08,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-12-14 07:47:08,786 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 14 [2022-12-14 07:47:08,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:08,786 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-12-14 07:47:08,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:08,786 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-12-14 07:47:08,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:47:08,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:08,787 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:08,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 07:47:08,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:08,989 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:08,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:08,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1788216499, now seen corresponding path program 1 times [2022-12-14 07:47:08,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:08,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944545710] [2022-12-14 07:47:08,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:08,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:09,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:09,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944545710] [2022-12-14 07:47:09,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944545710] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:09,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039402434] [2022-12-14 07:47:09,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:09,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:09,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:09,149 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:09,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 07:47:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:09,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 07:47:09,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:09,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:09,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039402434] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:09,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2056298081] [2022-12-14 07:47:09,297 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:47:09,297 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:09,297 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:09,297 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:09,297 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:09,492 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:10,318 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2030#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (= (ite (and (< |ULTIMATE.start_f_~i~0#1| 0) (not (= (mod |ULTIMATE.start_f_~i~0#1| 2) 0))) (+ (mod |ULTIMATE.start_f_~i~0#1| 2) (- 2)) (mod |ULTIMATE.start_f_~i~0#1| 2)) 0)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= |ULTIMATE.start_f_~k#1| 2) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:10,318 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:10,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:10,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-12-14 07:47:10,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014464991] [2022-12-14 07:47:10,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:10,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 07:47:10,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:10,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 07:47:10,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2022-12-14 07:47:10,320 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:10,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:10,564 INFO L93 Difference]: Finished difference Result 102 states and 122 transitions. [2022-12-14 07:47:10,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-14 07:47:10,565 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 07:47:10,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:10,566 INFO L225 Difference]: With dead ends: 102 [2022-12-14 07:47:10,566 INFO L226 Difference]: Without dead ends: 91 [2022-12-14 07:47:10,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=292, Invalid=1348, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 07:47:10,567 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 83 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:10,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 50 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:47:10,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-12-14 07:47:10,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 65. [2022-12-14 07:47:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 64 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 84 transitions. [2022-12-14 07:47:10,579 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 84 transitions. Word has length 15 [2022-12-14 07:47:10,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:10,579 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 84 transitions. [2022-12-14 07:47:10,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:10,579 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 84 transitions. [2022-12-14 07:47:10,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 07:47:10,580 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:10,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:10,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 07:47:10,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:10,782 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:10,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:10,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1788218037, now seen corresponding path program 1 times [2022-12-14 07:47:10,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:10,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983425099] [2022-12-14 07:47:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:10,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:10,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:10,851 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:47:10,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:10,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983425099] [2022-12-14 07:47:10,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983425099] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:10,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205159797] [2022-12-14 07:47:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:10,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:10,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:10,853 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:10,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 07:47:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:10,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 07:47:10,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:47:10,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:47:10,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205159797] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:10,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2013539429] [2022-12-14 07:47:10,922 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 07:47:10,923 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:10,923 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:10,923 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:10,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:11,049 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:11,611 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2394#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 |ULTIMATE.start_f_~i~0#1|) (<= |ULTIMATE.start_f_~k#1| 2) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:11,611 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:11,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:11,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-12-14 07:47:11,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234778202] [2022-12-14 07:47:11,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:11,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 07:47:11,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 07:47:11,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-12-14 07:47:11,612 INFO L87 Difference]: Start difference. First operand 65 states and 84 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:11,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:11,679 INFO L93 Difference]: Finished difference Result 126 states and 164 transitions. [2022-12-14 07:47:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 07:47:11,679 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 07:47:11,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:11,680 INFO L225 Difference]: With dead ends: 126 [2022-12-14 07:47:11,680 INFO L226 Difference]: Without dead ends: 125 [2022-12-14 07:47:11,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-12-14 07:47:11,681 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 53 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:11,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 81 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:47:11,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-12-14 07:47:11,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 113. [2022-12-14 07:47:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 110 states have (on average 1.3818181818181818) internal successors, (152), 112 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 152 transitions. [2022-12-14 07:47:11,693 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 152 transitions. Word has length 15 [2022-12-14 07:47:11,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:11,693 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 152 transitions. [2022-12-14 07:47:11,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:11,694 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 152 transitions. [2022-12-14 07:47:11,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 07:47:11,694 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:11,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:11,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 07:47:11,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 07:47:11,896 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:11,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:11,897 INFO L85 PathProgramCache]: Analyzing trace with hash -398735213, now seen corresponding path program 1 times [2022-12-14 07:47:11,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:11,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436380793] [2022-12-14 07:47:11,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:11,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:47:11,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:11,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436380793] [2022-12-14 07:47:11,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436380793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:11,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 07:47:11,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 07:47:11,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182594078] [2022-12-14 07:47:11,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:11,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 07:47:11,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:11,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 07:47:11,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:47:11,944 INFO L87 Difference]: Start difference. First operand 113 states and 152 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2022-12-14 07:47:11,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:11,969 INFO L93 Difference]: Finished difference Result 217 states and 290 transitions. [2022-12-14 07:47:11,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 07:47:11,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) Word has length 16 [2022-12-14 07:47:11,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:11,970 INFO L225 Difference]: With dead ends: 217 [2022-12-14 07:47:11,970 INFO L226 Difference]: Without dead ends: 148 [2022-12-14 07:47:11,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 07:47:11,971 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:11,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 27 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:47:11,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-12-14 07:47:11,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2022-12-14 07:47:11,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 141 states have (on average 1.297872340425532) internal successors, (183), 143 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:11,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 183 transitions. [2022-12-14 07:47:11,986 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 183 transitions. Word has length 16 [2022-12-14 07:47:11,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:11,986 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 183 transitions. [2022-12-14 07:47:11,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2022-12-14 07:47:11,986 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 183 transitions. [2022-12-14 07:47:11,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 07:47:11,987 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:11,987 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:11,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 07:47:11,987 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:11,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:11,988 INFO L85 PathProgramCache]: Analyzing trace with hash -378544757, now seen corresponding path program 1 times [2022-12-14 07:47:11,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:11,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698388928] [2022-12-14 07:47:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:11,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:12,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:12,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698388928] [2022-12-14 07:47:12,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698388928] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:12,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597547196] [2022-12-14 07:47:12,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:12,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:12,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:12,040 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:12,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 07:47:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:12,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 07:47:12,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:12,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:12,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597547196] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:12,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [982790601] [2022-12-14 07:47:12,120 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 07:47:12,120 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:12,121 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:12,121 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:12,121 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:12,348 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:12,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [982790601] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 07:47:12,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:12,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6] total 18 [2022-12-14 07:47:12,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405205932] [2022-12-14 07:47:12,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 07:47:12,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 07:47:12,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:12,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 07:47:12,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2022-12-14 07:47:12,751 INFO L87 Difference]: Start difference. First operand 144 states and 183 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:12,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:12,975 INFO L93 Difference]: Finished difference Result 264 states and 341 transitions. [2022-12-14 07:47:12,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 07:47:12,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-14 07:47:12,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:12,976 INFO L225 Difference]: With dead ends: 264 [2022-12-14 07:47:12,976 INFO L226 Difference]: Without dead ends: 207 [2022-12-14 07:47:12,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 35 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=399, Unknown=0, NotChecked=0, Total=506 [2022-12-14 07:47:12,977 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 30 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:12,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 40 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:47:12,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-12-14 07:47:12,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 151. [2022-12-14 07:47:12,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 149 states have (on average 1.2416107382550337) internal successors, (185), 150 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 185 transitions. [2022-12-14 07:47:12,992 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 185 transitions. Word has length 19 [2022-12-14 07:47:12,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:12,992 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 185 transitions. [2022-12-14 07:47:12,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:12,992 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 185 transitions. [2022-12-14 07:47:12,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 07:47:12,992 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:12,992 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:12,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 07:47:13,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 07:47:13,194 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:13,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:13,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1758484887, now seen corresponding path program 2 times [2022-12-14 07:47:13,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:13,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325902482] [2022-12-14 07:47:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:13,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:13,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:13,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325902482] [2022-12-14 07:47:13,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325902482] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:13,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689640523] [2022-12-14 07:47:13,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:47:13,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:13,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:13,304 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:13,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 07:47:13,333 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-14 07:47:13,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:47:13,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 07:47:13,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:13,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:13,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689640523] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:13,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [431041806] [2022-12-14 07:47:13,534 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:47:13,534 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:13,534 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:13,534 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:13,534 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:13,750 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:14,576 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4213#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (= (ite (and (< |ULTIMATE.start_f_~i~0#1| 0) (not (= (mod |ULTIMATE.start_f_~i~0#1| 2) 0))) (+ (mod |ULTIMATE.start_f_~i~0#1| 2) (- 2)) (mod |ULTIMATE.start_f_~i~0#1| 2)) 0)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= |ULTIMATE.start_f_~k#1| 2) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:14,576 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:14,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:14,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-12-14 07:47:14,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548616086] [2022-12-14 07:47:14,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:14,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 07:47:14,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:14,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 07:47:14,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=1292, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 07:47:14,577 INFO L87 Difference]: Start difference. First operand 151 states and 185 transitions. Second operand has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) [2022-12-14 07:47:14,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:14,886 INFO L93 Difference]: Finished difference Result 248 states and 299 transitions. [2022-12-14 07:47:14,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-14 07:47:14,886 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) Word has length 23 [2022-12-14 07:47:14,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:14,887 INFO L225 Difference]: With dead ends: 248 [2022-12-14 07:47:14,887 INFO L226 Difference]: Without dead ends: 235 [2022-12-14 07:47:14,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=587, Invalid=2493, Unknown=0, NotChecked=0, Total=3080 [2022-12-14 07:47:14,888 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 129 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:14,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 53 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:47:14,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-12-14 07:47:14,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 210. [2022-12-14 07:47:14,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 208 states have (on average 1.2211538461538463) internal successors, (254), 209 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:14,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 254 transitions. [2022-12-14 07:47:14,909 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 254 transitions. Word has length 23 [2022-12-14 07:47:14,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:14,909 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 254 transitions. [2022-12-14 07:47:14,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) [2022-12-14 07:47:14,909 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 254 transitions. [2022-12-14 07:47:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-14 07:47:14,909 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:14,909 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:14,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-14 07:47:15,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 07:47:15,110 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:15,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:15,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1101642217, now seen corresponding path program 3 times [2022-12-14 07:47:15,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:15,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827187353] [2022-12-14 07:47:15,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:15,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:15,185 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:15,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827187353] [2022-12-14 07:47:15,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827187353] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:15,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601641565] [2022-12-14 07:47:15,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:47:15,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:15,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:15,187 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:15,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 07:47:15,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:47:15,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:47:15,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 07:47:15,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:15,322 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:15,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:15,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601641565] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:15,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1258363696] [2022-12-14 07:47:15,416 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:47:15,416 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:15,417 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:15,417 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:15,417 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:15,599 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:16,405 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5107#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (= (ite (and (< |ULTIMATE.start_f_~i~0#1| 0) (not (= (mod |ULTIMATE.start_f_~i~0#1| 2) 0))) (+ (mod |ULTIMATE.start_f_~i~0#1| 2) (- 2)) (mod |ULTIMATE.start_f_~i~0#1| 2)) 0)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= |ULTIMATE.start_f_~k#1| 2) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:16,405 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:16,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:16,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-12-14 07:47:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227618114] [2022-12-14 07:47:16,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:16,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-12-14 07:47:16,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:16,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-12-14 07:47:16,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1276, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 07:47:16,406 INFO L87 Difference]: Start difference. First operand 210 states and 254 transitions. Second operand has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) [2022-12-14 07:47:16,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:16,737 INFO L93 Difference]: Finished difference Result 311 states and 377 transitions. [2022-12-14 07:47:16,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 07:47:16,737 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) Word has length 23 [2022-12-14 07:47:16,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:16,738 INFO L225 Difference]: With dead ends: 311 [2022-12-14 07:47:16,738 INFO L226 Difference]: Without dead ends: 296 [2022-12-14 07:47:16,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=537, Invalid=2433, Unknown=0, NotChecked=0, Total=2970 [2022-12-14 07:47:16,739 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 137 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:16,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 52 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:47:16,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-12-14 07:47:16,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 220. [2022-12-14 07:47:16,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 218 states have (on average 1.2293577981651376) internal successors, (268), 219 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 268 transitions. [2022-12-14 07:47:16,761 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 268 transitions. Word has length 23 [2022-12-14 07:47:16,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:16,761 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 268 transitions. [2022-12-14 07:47:16,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 28 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) [2022-12-14 07:47:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 268 transitions. [2022-12-14 07:47:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 07:47:16,761 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:16,761 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:16,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 07:47:16,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:16,963 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:16,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash -444771066, now seen corresponding path program 2 times [2022-12-14 07:47:16,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:16,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014217315] [2022-12-14 07:47:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:16,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:16,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-14 07:47:17,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:17,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014217315] [2022-12-14 07:47:17,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014217315] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:17,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399368498] [2022-12-14 07:47:17,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:47:17,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:17,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:17,065 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:17,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 07:47:17,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 07:47:17,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:47:17,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 07:47:17,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 07:47:17,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-14 07:47:17,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399368498] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:17,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [439345714] [2022-12-14 07:47:17,143 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2022-12-14 07:47:17,143 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:17,143 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:17,143 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:17,143 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:17,254 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:17,877 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6119#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (< 2147483646 |ULTIMATE.start_f_#t~post1#1|) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 |ULTIMATE.start_f_~i~0#1|) (<= |ULTIMATE.start_f_~k#1| 2) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~l#1| 2147483647) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:17,877 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:17,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:17,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2022-12-14 07:47:17,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586535128] [2022-12-14 07:47:17,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:17,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 07:47:17,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:17,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 07:47:17,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-12-14 07:47:17,878 INFO L87 Difference]: Start difference. First operand 220 states and 268 transitions. Second operand has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:18,038 INFO L93 Difference]: Finished difference Result 281 states and 338 transitions. [2022-12-14 07:47:18,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 07:47:18,038 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-12-14 07:47:18,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:18,040 INFO L225 Difference]: With dead ends: 281 [2022-12-14 07:47:18,040 INFO L226 Difference]: Without dead ends: 280 [2022-12-14 07:47:18,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=926, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 07:47:18,041 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 101 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:18,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 80 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 07:47:18,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-12-14 07:47:18,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 140. [2022-12-14 07:47:18,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 139 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2022-12-14 07:47:18,060 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 27 [2022-12-14 07:47:18,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:18,060 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2022-12-14 07:47:18,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:18,060 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2022-12-14 07:47:18,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-12-14 07:47:18,060 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:18,061 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:18,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 07:47:18,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:18,262 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:18,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:18,263 INFO L85 PathProgramCache]: Analyzing trace with hash 561843167, now seen corresponding path program 4 times [2022-12-14 07:47:18,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:18,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249056639] [2022-12-14 07:47:18,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:18,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:18,415 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:18,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:18,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249056639] [2022-12-14 07:47:18,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249056639] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:18,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878362932] [2022-12-14 07:47:18,416 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:47:18,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:18,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:18,417 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:18,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 07:47:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:18,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 07:47:18,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:18,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:18,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878362932] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:18,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2018615270] [2022-12-14 07:47:18,696 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:47:18,696 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:18,696 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:18,696 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:18,696 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:18,836 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:19,598 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7008#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (= (ite (and (< |ULTIMATE.start_f_~i~0#1| 0) (not (= (mod |ULTIMATE.start_f_~i~0#1| 2) 0))) (+ (mod |ULTIMATE.start_f_~i~0#1| 2) (- 2)) (mod |ULTIMATE.start_f_~i~0#1| 2)) 0)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= |ULTIMATE.start_f_~k#1| 2) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:19,598 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:19,598 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:19,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-12-14 07:47:19,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860292883] [2022-12-14 07:47:19,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:19,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 07:47:19,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:19,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 07:47:19,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=2185, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 07:47:19,600 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand has 41 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:20,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:20,101 INFO L93 Difference]: Finished difference Result 315 states and 365 transitions. [2022-12-14 07:47:20,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-14 07:47:20,102 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 0 states have call successors, (0), 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 31 [2022-12-14 07:47:20,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:20,102 INFO L225 Difference]: With dead ends: 315 [2022-12-14 07:47:20,102 INFO L226 Difference]: Without dead ends: 300 [2022-12-14 07:47:20,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2286 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1114, Invalid=4586, Unknown=0, NotChecked=0, Total=5700 [2022-12-14 07:47:20,104 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 226 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:20,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 72 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:47:20,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-12-14 07:47:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 187. [2022-12-14 07:47:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.1451612903225807) internal successors, (213), 186 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 213 transitions. [2022-12-14 07:47:20,135 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 213 transitions. Word has length 31 [2022-12-14 07:47:20,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:20,135 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 213 transitions. [2022-12-14 07:47:20,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:20,135 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 213 transitions. [2022-12-14 07:47:20,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 07:47:20,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:20,135 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 07:47:20,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 07:47:20,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-14 07:47:20,337 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:20,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:20,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1981534792, now seen corresponding path program 1 times [2022-12-14 07:47:20,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:20,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546170349] [2022-12-14 07:47:20,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:20,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:20,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:20,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546170349] [2022-12-14 07:47:20,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546170349] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:20,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577631464] [2022-12-14 07:47:20,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:20,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:20,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:20,484 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:20,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 07:47:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:20,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 07:47:20,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:20,665 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:20,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:20,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577631464] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:20,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1056301388] [2022-12-14 07:47:20,840 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:47:20,840 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:20,840 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:20,840 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:20,840 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:21,078 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:21,577 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8077#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 |ULTIMATE.start_f_#in~k#1|) (<= 0 |ULTIMATE.start_f_~k#1|) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 |ULTIMATE.start_main_#t~nondet2#1|) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:21,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:21,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:21,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-12-14 07:47:21,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243567808] [2022-12-14 07:47:21,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:21,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 07:47:21,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:21,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 07:47:21,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=2079, Unknown=0, NotChecked=0, Total=2450 [2022-12-14 07:47:21,580 INFO L87 Difference]: Start difference. First operand 187 states and 213 transitions. Second operand has 41 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:22,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:22,197 INFO L93 Difference]: Finished difference Result 390 states and 445 transitions. [2022-12-14 07:47:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-14 07:47:22,198 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-12-14 07:47:22,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:22,198 INFO L225 Difference]: With dead ends: 390 [2022-12-14 07:47:22,198 INFO L226 Difference]: Without dead ends: 377 [2022-12-14 07:47:22,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=994, Invalid=4706, Unknown=0, NotChecked=0, Total=5700 [2022-12-14 07:47:22,200 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 179 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:22,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 55 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:47:22,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-12-14 07:47:22,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 211. [2022-12-14 07:47:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.1571428571428573) internal successors, (243), 210 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:22,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 243 transitions. [2022-12-14 07:47:22,236 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 243 transitions. Word has length 34 [2022-12-14 07:47:22,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:22,236 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 243 transitions. [2022-12-14 07:47:22,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.55) internal successors, (102), 40 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:22,237 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 243 transitions. [2022-12-14 07:47:22,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-14 07:47:22,237 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:22,237 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:22,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 07:47:22,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:22,439 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:22,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:22,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1722712174, now seen corresponding path program 1 times [2022-12-14 07:47:22,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:22,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375471870] [2022-12-14 07:47:22,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:22,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:22,655 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:22,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375471870] [2022-12-14 07:47:22,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375471870] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:22,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294555909] [2022-12-14 07:47:22,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:22,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:22,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:22,656 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:22,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 07:47:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:22,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 07:47:22,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:22,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:23,204 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:23,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294555909] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:23,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1004287389] [2022-12-14 07:47:23,205 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:47:23,205 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:23,205 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:23,205 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:23,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:23,526 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:24,298 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9382#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:24,298 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:24,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:24,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2022-12-14 07:47:24,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603343496] [2022-12-14 07:47:24,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:24,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-14 07:47:24,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:24,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-14 07:47:24,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=3853, Unknown=0, NotChecked=0, Total=4556 [2022-12-14 07:47:24,300 INFO L87 Difference]: Start difference. First operand 211 states and 243 transitions. Second operand has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:25,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:25,208 INFO L93 Difference]: Finished difference Result 591 states and 674 transitions. [2022-12-14 07:47:25,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-14 07:47:25,209 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 0 states have call successors, (0), 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 45 [2022-12-14 07:47:25,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:25,210 INFO L225 Difference]: With dead ends: 591 [2022-12-14 07:47:25,210 INFO L226 Difference]: Without dead ends: 572 [2022-12-14 07:47:25,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 78 SyntacticMatches, 8 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5086 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2188, Invalid=9368, Unknown=0, NotChecked=0, Total=11556 [2022-12-14 07:47:25,212 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 386 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:25,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 73 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:47:25,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-12-14 07:47:25,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 321. [2022-12-14 07:47:25,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.15625) internal successors, (370), 320 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 370 transitions. [2022-12-14 07:47:25,273 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 370 transitions. Word has length 45 [2022-12-14 07:47:25,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:25,273 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 370 transitions. [2022-12-14 07:47:25,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.3275862068965516) internal successors, (135), 58 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:25,273 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 370 transitions. [2022-12-14 07:47:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-14 07:47:25,274 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:25,274 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2022-12-14 07:47:25,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 07:47:25,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-14 07:47:25,475 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:25,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:25,476 INFO L85 PathProgramCache]: Analyzing trace with hash 460574663, now seen corresponding path program 2 times [2022-12-14 07:47:25,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:25,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692349158] [2022-12-14 07:47:25,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:25,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:25,692 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:25,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:25,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692349158] [2022-12-14 07:47:25,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692349158] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:25,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467079878] [2022-12-14 07:47:25,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:47:25,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:25,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:25,694 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:25,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 07:47:25,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 07:47:25,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:47:25,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-14 07:47:25,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 59 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 07:47:25,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 59 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-14 07:47:25,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467079878] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:25,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1163336745] [2022-12-14 07:47:25,817 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:47:25,817 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:25,818 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:25,818 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:25,818 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:26,103 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:26,567 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11159#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 |ULTIMATE.start_f_#in~k#1|) (<= 0 |ULTIMATE.start_f_~k#1|) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 |ULTIMATE.start_main_#t~nondet2#1|) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:26,567 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:26,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:26,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6, 6] total 25 [2022-12-14 07:47:26,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979606785] [2022-12-14 07:47:26,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:26,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 07:47:26,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:26,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 07:47:26,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=978, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 07:47:26,568 INFO L87 Difference]: Start difference. First operand 321 states and 370 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:27,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:27,017 INFO L93 Difference]: Finished difference Result 558 states and 641 transitions. [2022-12-14 07:47:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-14 07:47:27,017 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 0 states have call successors, (0), 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 46 [2022-12-14 07:47:27,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:27,018 INFO L225 Difference]: With dead ends: 558 [2022-12-14 07:47:27,018 INFO L226 Difference]: Without dead ends: 243 [2022-12-14 07:47:27,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=496, Invalid=2926, Unknown=0, NotChecked=0, Total=3422 [2022-12-14 07:47:27,019 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 144 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:27,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 59 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 07:47:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-12-14 07:47:27,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 211. [2022-12-14 07:47:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.0476190476190477) internal successors, (220), 210 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 220 transitions. [2022-12-14 07:47:27,071 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 220 transitions. Word has length 46 [2022-12-14 07:47:27,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:27,071 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 220 transitions. [2022-12-14 07:47:27,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 25 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:27,071 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 220 transitions. [2022-12-14 07:47:27,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-14 07:47:27,071 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:27,072 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2022-12-14 07:47:27,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 07:47:27,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:27,274 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:27,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:27,274 INFO L85 PathProgramCache]: Analyzing trace with hash -563527062, now seen corresponding path program 1 times [2022-12-14 07:47:27,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:27,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148936257] [2022-12-14 07:47:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:27,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:27,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:27,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:27,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148936257] [2022-12-14 07:47:27,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148936257] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:27,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135099215] [2022-12-14 07:47:27,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:27,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:27,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:27,506 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:27,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 07:47:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:27,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-14 07:47:27,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:27,771 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:27,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:28,007 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:28,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135099215] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:28,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1330308323] [2022-12-14 07:47:28,009 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:47:28,009 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:28,009 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:28,009 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:28,009 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:28,375 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:29,108 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12701#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:29,108 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:29,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:29,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 57 [2022-12-14 07:47:29,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799037514] [2022-12-14 07:47:29,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:29,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-12-14 07:47:29,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:29,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-12-14 07:47:29,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=3853, Unknown=0, NotChecked=0, Total=4556 [2022-12-14 07:47:29,110 INFO L87 Difference]: Start difference. First operand 211 states and 220 transitions. Second operand has 59 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:30,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:30,134 INFO L93 Difference]: Finished difference Result 415 states and 443 transitions. [2022-12-14 07:47:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-14 07:47:30,134 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 0 states have call successors, (0), 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 49 [2022-12-14 07:47:30,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:30,135 INFO L225 Difference]: With dead ends: 415 [2022-12-14 07:47:30,135 INFO L226 Difference]: Without dead ends: 394 [2022-12-14 07:47:30,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4813 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2187, Invalid=10245, Unknown=0, NotChecked=0, Total=12432 [2022-12-14 07:47:30,137 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 327 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:30,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 75 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 07:47:30,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-12-14 07:47:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 261. [2022-12-14 07:47:30,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 1.0653846153846154) internal successors, (277), 260 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:30,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 277 transitions. [2022-12-14 07:47:30,184 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 277 transitions. Word has length 49 [2022-12-14 07:47:30,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:30,184 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 277 transitions. [2022-12-14 07:47:30,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.5344827586206895) internal successors, (147), 58 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:30,185 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 277 transitions. [2022-12-14 07:47:30,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-12-14 07:47:30,185 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:30,185 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 07:47:30,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-14 07:47:30,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:30,386 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:30,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:30,386 INFO L85 PathProgramCache]: Analyzing trace with hash 592549656, now seen corresponding path program 2 times [2022-12-14 07:47:30,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:30,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485455924] [2022-12-14 07:47:30,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:30,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:30,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:30,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485455924] [2022-12-14 07:47:30,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485455924] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:30,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960425174] [2022-12-14 07:47:30,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:47:30,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:30,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:30,695 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:30,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 07:47:30,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-12-14 07:47:30,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:47:30,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 07:47:30,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:31,088 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:31,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:31,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960425174] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:31,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2023781750] [2022-12-14 07:47:31,566 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:47:31,566 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:31,567 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:31,567 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:31,567 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:31,872 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:32,710 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14222#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:32,710 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:32,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:32,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 81 [2022-12-14 07:47:32,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380680346] [2022-12-14 07:47:32,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:32,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-12-14 07:47:32,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:32,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-12-14 07:47:32,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=7069, Unknown=0, NotChecked=0, Total=8372 [2022-12-14 07:47:32,714 INFO L87 Difference]: Start difference. First operand 261 states and 277 transitions. Second operand has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:34,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:34,196 INFO L93 Difference]: Finished difference Result 517 states and 551 transitions. [2022-12-14 07:47:34,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-12-14 07:47:34,196 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 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 63 [2022-12-14 07:47:34,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:34,197 INFO L225 Difference]: With dead ends: 517 [2022-12-14 07:47:34,197 INFO L226 Difference]: Without dead ends: 494 [2022-12-14 07:47:34,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 114 SyntacticMatches, 10 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9783 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4250, Invalid=17506, Unknown=0, NotChecked=0, Total=21756 [2022-12-14 07:47:34,199 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 459 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:34,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 104 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 07:47:34,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-12-14 07:47:34,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 305. [2022-12-14 07:47:34,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.055921052631579) internal successors, (321), 304 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 321 transitions. [2022-12-14 07:47:34,261 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 321 transitions. Word has length 63 [2022-12-14 07:47:34,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:34,261 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 321 transitions. [2022-12-14 07:47:34,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:34,261 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 321 transitions. [2022-12-14 07:47:34,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 07:47:34,262 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:34,262 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:47:34,267 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 07:47:34,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-14 07:47:34,464 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:34,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:34,465 INFO L85 PathProgramCache]: Analyzing trace with hash 401589758, now seen corresponding path program 5 times [2022-12-14 07:47:34,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:34,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947100259] [2022-12-14 07:47:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:34,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:35,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:35,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947100259] [2022-12-14 07:47:35,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947100259] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:35,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617430772] [2022-12-14 07:47:35,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:47:35,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:35,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:35,137 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:35,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 07:47:35,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2022-12-14 07:47:35,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:47:35,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-14 07:47:35,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:35,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:37,075 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 0 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:37,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617430772] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:37,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1112451973] [2022-12-14 07:47:37,077 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:47:37,077 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:37,077 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:37,077 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:37,077 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:37,221 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:38,686 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16134#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (= (ite (and (< |ULTIMATE.start_f_~i~0#1| 0) (not (= (mod |ULTIMATE.start_f_~i~0#1| 2) 0))) (+ (mod |ULTIMATE.start_f_~i~0#1| 2) (- 2)) (mod |ULTIMATE.start_f_~i~0#1| 2)) 0)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= |ULTIMATE.start_f_~k#1| 2) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:38,686 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:38,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:38,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 117 [2022-12-14 07:47:38,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915439864] [2022-12-14 07:47:38,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:38,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-12-14 07:47:38,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:38,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-12-14 07:47:38,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3343, Invalid=13427, Unknown=0, NotChecked=0, Total=16770 [2022-12-14 07:47:38,690 INFO L87 Difference]: Start difference. First operand 305 states and 321 transitions. Second operand has 119 states, 118 states have (on average 2.110169491525424) internal successors, (249), 118 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:40,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:40,320 INFO L93 Difference]: Finished difference Result 603 states and 638 transitions. [2022-12-14 07:47:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-12-14 07:47:40,321 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 118 states have (on average 2.110169491525424) internal successors, (249), 118 states have internal predecessors, (249), 0 states have call successors, (0), 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 83 [2022-12-14 07:47:40,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:40,322 INFO L225 Difference]: With dead ends: 603 [2022-12-14 07:47:40,322 INFO L226 Difference]: Without dead ends: 564 [2022-12-14 07:47:40,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12541 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6014, Invalid=22378, Unknown=0, NotChecked=0, Total=28392 [2022-12-14 07:47:40,324 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 610 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:40,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 103 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:47:40,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2022-12-14 07:47:40,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 388. [2022-12-14 07:47:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 1.0439276485788114) internal successors, (404), 387 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 404 transitions. [2022-12-14 07:47:40,407 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 404 transitions. Word has length 83 [2022-12-14 07:47:40,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:40,407 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 404 transitions. [2022-12-14 07:47:40,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 118 states have (on average 2.110169491525424) internal successors, (249), 118 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:40,408 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 404 transitions. [2022-12-14 07:47:40,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 07:47:40,408 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:40,408 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 7, 7, 7, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2022-12-14 07:47:40,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-14 07:47:40,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-14 07:47:40,609 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:40,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:40,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1674602723, now seen corresponding path program 3 times [2022-12-14 07:47:40,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:40,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621451691] [2022-12-14 07:47:40,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:40,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:40,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:41,076 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:41,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:41,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621451691] [2022-12-14 07:47:41,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621451691] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:41,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692044582] [2022-12-14 07:47:41,077 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:47:41,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:41,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:41,077 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:41,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-14 07:47:41,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:47:41,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:47:41,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-14 07:47:41,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:41,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:42,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692044582] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:42,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [981551979] [2022-12-14 07:47:42,541 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:47:42,541 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:42,541 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:42,541 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:42,541 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:42,851 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:43,938 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18243#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:43,938 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:43,938 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:43,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 111 [2022-12-14 07:47:43,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792033696] [2022-12-14 07:47:43,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:43,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2022-12-14 07:47:43,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:43,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2022-12-14 07:47:43,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2337, Invalid=12425, Unknown=0, NotChecked=0, Total=14762 [2022-12-14 07:47:43,940 INFO L87 Difference]: Start difference. First operand 388 states and 404 transitions. Second operand has 113 states, 112 states have (on average 2.2767857142857144) internal successors, (255), 112 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:46,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:46,362 INFO L93 Difference]: Finished difference Result 964 states and 1006 transitions. [2022-12-14 07:47:46,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-12-14 07:47:46,363 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 112 states have (on average 2.2767857142857144) internal successors, (255), 112 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-12-14 07:47:46,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:46,364 INFO L225 Difference]: With dead ends: 964 [2022-12-14 07:47:46,364 INFO L226 Difference]: Without dead ends: 933 [2022-12-14 07:47:46,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 157 SyntacticMatches, 13 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18364 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=8067, Invalid=32535, Unknown=0, NotChecked=0, Total=40602 [2022-12-14 07:47:46,366 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 772 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:46,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 144 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:47:46,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-12-14 07:47:46,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 428. [2022-12-14 07:47:46,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.0421545667447307) internal successors, (445), 427 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 445 transitions. [2022-12-14 07:47:46,472 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 445 transitions. Word has length 85 [2022-12-14 07:47:46,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:46,472 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 445 transitions. [2022-12-14 07:47:46,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 112 states have (on average 2.2767857142857144) internal successors, (255), 112 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 445 transitions. [2022-12-14 07:47:46,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 07:47:46,473 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:46,473 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1] [2022-12-14 07:47:46,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-14 07:47:46,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-14 07:47:46,673 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:46,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:46,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1566641082, now seen corresponding path program 3 times [2022-12-14 07:47:46,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:46,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279046905] [2022-12-14 07:47:46,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:46,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:47,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:47,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279046905] [2022-12-14 07:47:47,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279046905] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:47,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955479294] [2022-12-14 07:47:47,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:47:47,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:47,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:47,337 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:47,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 07:47:47,409 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:47:47,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:47:47,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-14 07:47:47,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:48,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 472 backedges. 0 proven. 472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:49,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955479294] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:49,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [4747681] [2022-12-14 07:47:49,465 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:47:49,465 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:49,465 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:49,465 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:49,465 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:49,697 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:50,512 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21102#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_f_~i~0#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 |ULTIMATE.start_f_#in~k#1|) (<= 0 |ULTIMATE.start_f_~k#1|) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 |ULTIMATE.start_main_#t~nondet2#1|) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:50,512 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:50,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:50,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 123 [2022-12-14 07:47:50,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817441939] [2022-12-14 07:47:50,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:50,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2022-12-14 07:47:50,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:50,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2022-12-14 07:47:50,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2927, Invalid=14895, Unknown=0, NotChecked=0, Total=17822 [2022-12-14 07:47:50,516 INFO L87 Difference]: Start difference. First operand 428 states and 445 transitions. Second operand has 125 states, 124 states have (on average 2.370967741935484) internal successors, (294), 124 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:47:54,041 INFO L93 Difference]: Finished difference Result 961 states and 1013 transitions. [2022-12-14 07:47:54,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-12-14 07:47:54,041 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 124 states have (on average 2.370967741935484) internal successors, (294), 124 states have internal predecessors, (294), 0 states have call successors, (0), 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 98 [2022-12-14 07:47:54,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:47:54,044 INFO L225 Difference]: With dead ends: 961 [2022-12-14 07:47:54,044 INFO L226 Difference]: Without dead ends: 922 [2022-12-14 07:47:54,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20779 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=9504, Invalid=42252, Unknown=0, NotChecked=0, Total=51756 [2022-12-14 07:47:54,047 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 809 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:47:54,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 142 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:47:54,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-12-14 07:47:54,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 523. [2022-12-14 07:47:54,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 522 states have (on average 1.0574712643678161) internal successors, (552), 522 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 552 transitions. [2022-12-14 07:47:54,170 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 552 transitions. Word has length 98 [2022-12-14 07:47:54,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:47:54,170 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 552 transitions. [2022-12-14 07:47:54,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 124 states have (on average 2.370967741935484) internal successors, (294), 124 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:47:54,171 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 552 transitions. [2022-12-14 07:47:54,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-14 07:47:54,171 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:47:54,171 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 15, 11, 9, 9, 9, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2022-12-14 07:47:54,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 07:47:54,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-14 07:47:54,373 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:47:54,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:47:54,374 INFO L85 PathProgramCache]: Analyzing trace with hash -73035523, now seen corresponding path program 4 times [2022-12-14 07:47:54,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:47:54,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408051647] [2022-12-14 07:47:54,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:47:54,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:47:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:55,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:47:55,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408051647] [2022-12-14 07:47:55,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408051647] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:47:55,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735813014] [2022-12-14 07:47:55,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:47:55,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:47:55,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:47:55,272 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:47:55,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-14 07:47:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:47:55,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 51 conjunts are in the unsatisfiable core [2022-12-14 07:47:55,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:47:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:56,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:47:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 608 backedges. 0 proven. 608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:47:57,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735813014] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:47:57,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2045243491] [2022-12-14 07:47:57,675 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:47:57,675 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:47:57,675 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:47:57,675 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:47:57,675 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:47:57,991 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:47:59,585 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '24205#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:47:59,585 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:47:59,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:47:59,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 147 [2022-12-14 07:47:59,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360500618] [2022-12-14 07:47:59,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:47:59,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2022-12-14 07:47:59,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:47:59,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2022-12-14 07:47:59,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3997, Invalid=20809, Unknown=0, NotChecked=0, Total=24806 [2022-12-14 07:47:59,589 INFO L87 Difference]: Start difference. First operand 523 states and 552 transitions. Second operand has 149 states, 148 states have (on average 2.25) internal successors, (333), 148 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:48:03,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:48:03,288 INFO L93 Difference]: Finished difference Result 1244 states and 1305 transitions. [2022-12-14 07:48:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-12-14 07:48:03,288 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 148 states have (on average 2.25) internal successors, (333), 148 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2022-12-14 07:48:03,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:48:03,290 INFO L225 Difference]: With dead ends: 1244 [2022-12-14 07:48:03,290 INFO L226 Difference]: Without dead ends: 1207 [2022-12-14 07:48:03,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 207 SyntacticMatches, 17 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32137 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=14261, Invalid=56229, Unknown=0, NotChecked=0, Total=70490 [2022-12-14 07:48:03,293 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1081 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:48:03,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 175 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 07:48:03,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2022-12-14 07:48:03,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 579. [2022-12-14 07:48:03,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 578 states have (on average 1.0519031141868511) internal successors, (608), 578 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:48:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 608 transitions. [2022-12-14 07:48:03,451 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 608 transitions. Word has length 111 [2022-12-14 07:48:03,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:48:03,451 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 608 transitions. [2022-12-14 07:48:03,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 148 states have (on average 2.25) internal successors, (333), 148 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:48:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 608 transitions. [2022-12-14 07:48:03,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-14 07:48:03,452 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:48:03,452 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 15, 11, 11, 11, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1] [2022-12-14 07:48:03,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-14 07:48:03,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:48:03,653 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:48:03,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:48:03,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1201751224, now seen corresponding path program 5 times [2022-12-14 07:48:03,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:48:03,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965458359] [2022-12-14 07:48:03,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:48:03,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:48:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:48:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:05,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:48:05,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965458359] [2022-12-14 07:48:05,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965458359] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:48:05,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979352956] [2022-12-14 07:48:05,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:48:05,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:48:05,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:48:05,044 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:48:05,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-14 07:48:05,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2022-12-14 07:48:05,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:48:05,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 65 conjunts are in the unsatisfiable core [2022-12-14 07:48:05,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:48:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:06,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:48:09,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 0 proven. 1041 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:09,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979352956] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:48:09,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1315752835] [2022-12-14 07:48:09,307 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:48:09,307 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:48:09,308 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:48:09,308 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:48:09,308 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:48:09,633 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:48:11,943 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '28054#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:48:11,943 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:48:11,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:48:11,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 189 [2022-12-14 07:48:11,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876155344] [2022-12-14 07:48:11,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:48:11,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2022-12-14 07:48:11,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:48:11,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2022-12-14 07:48:11,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6523, Invalid=33277, Unknown=0, NotChecked=0, Total=39800 [2022-12-14 07:48:11,948 INFO L87 Difference]: Start difference. First operand 579 states and 608 transitions. Second operand has 191 states, 190 states have (on average 2.2263157894736842) internal successors, (423), 190 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:48:18,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:48:18,700 INFO L93 Difference]: Finished difference Result 1503 states and 1574 transitions. [2022-12-14 07:48:18,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2022-12-14 07:48:18,700 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 190 states have (on average 2.2263157894736842) internal successors, (423), 190 states have internal predecessors, (423), 0 states have call successors, (0), 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 141 [2022-12-14 07:48:18,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:48:18,705 INFO L225 Difference]: With dead ends: 1503 [2022-12-14 07:48:18,705 INFO L226 Difference]: Without dead ends: 1456 [2022-12-14 07:48:18,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 264 SyntacticMatches, 22 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52987 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=23720, Invalid=91540, Unknown=0, NotChecked=0, Total=115260 [2022-12-14 07:48:18,709 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1436 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 07:48:18,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 244 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 07:48:18,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2022-12-14 07:48:18,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 669. [2022-12-14 07:48:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.0449101796407185) internal successors, (698), 668 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:48:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 698 transitions. [2022-12-14 07:48:18,909 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 698 transitions. Word has length 141 [2022-12-14 07:48:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:48:18,909 INFO L495 AbstractCegarLoop]: Abstraction has 669 states and 698 transitions. [2022-12-14 07:48:18,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 190 states have (on average 2.2263157894736842) internal successors, (423), 190 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:48:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 698 transitions. [2022-12-14 07:48:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-12-14 07:48:18,910 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:48:18,910 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 13, 13, 13, 12, 12, 12, 11, 11, 2, 1, 1, 1, 1, 1] [2022-12-14 07:48:18,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-14 07:48:19,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:48:19,112 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:48:19,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:48:19,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1222897011, now seen corresponding path program 6 times [2022-12-14 07:48:19,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:48:19,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754543817] [2022-12-14 07:48:19,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:48:19,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:48:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:48:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 0 proven. 1492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:20,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:48:20,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754543817] [2022-12-14 07:48:20,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754543817] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:48:20,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890126905] [2022-12-14 07:48:20,785 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:48:20,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:48:20,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:48:20,786 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:48:20,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-14 07:48:21,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:48:21,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:48:21,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 75 conjunts are in the unsatisfiable core [2022-12-14 07:48:21,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:48:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 0 proven. 1492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:22,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:48:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1492 backedges. 0 proven. 1492 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:25,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890126905] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:48:25,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1797597399] [2022-12-14 07:48:25,682 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:48:25,683 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:48:25,683 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:48:25,683 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:48:25,683 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:48:26,038 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:48:28,423 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '32693#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:48:28,424 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:48:28,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:48:28,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 219 [2022-12-14 07:48:28,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101085244] [2022-12-14 07:48:28,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:48:28,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 221 states [2022-12-14 07:48:28,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:48:28,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 221 interpolants. [2022-12-14 07:48:28,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8661, Invalid=44009, Unknown=0, NotChecked=0, Total=52670 [2022-12-14 07:48:28,430 INFO L87 Difference]: Start difference. First operand 669 states and 698 transitions. Second operand has 221 states, 220 states have (on average 2.359090909090909) internal successors, (519), 220 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:48:38,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:48:38,096 INFO L93 Difference]: Finished difference Result 1548 states and 1644 transitions. [2022-12-14 07:48:38,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 259 states. [2022-12-14 07:48:38,096 INFO L78 Accepts]: Start accepts. Automaton has has 221 states, 220 states have (on average 2.359090909090909) internal successors, (519), 220 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2022-12-14 07:48:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:48:38,098 INFO L225 Difference]: With dead ends: 1548 [2022-12-14 07:48:38,098 INFO L226 Difference]: Without dead ends: 1477 [2022-12-14 07:48:38,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 347 SyntacticMatches, 15 SemanticMatches, 412 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74647 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=32300, Invalid=138682, Unknown=0, NotChecked=0, Total=170982 [2022-12-14 07:48:38,106 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1817 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 07:48:38,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 238 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 07:48:38,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2022-12-14 07:48:38,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 814. [2022-12-14 07:48:38,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 813 states have (on average 1.0615006150061501) internal successors, (863), 813 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:48:38,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 863 transitions. [2022-12-14 07:48:38,339 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 863 transitions. Word has length 173 [2022-12-14 07:48:38,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:48:38,339 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 863 transitions. [2022-12-14 07:48:38,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 221 states, 220 states have (on average 2.359090909090909) internal successors, (519), 220 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:48:38,340 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 863 transitions. [2022-12-14 07:48:38,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-12-14 07:48:38,341 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:48:38,341 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 07:48:38,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-12-14 07:48:38,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-14 07:48:38,542 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:48:38,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:48:38,543 INFO L85 PathProgramCache]: Analyzing trace with hash -942544250, now seen corresponding path program 6 times [2022-12-14 07:48:38,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:48:38,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878765482] [2022-12-14 07:48:38,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:48:38,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:48:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:48:41,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 0 proven. 3487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:41,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:48:41,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878765482] [2022-12-14 07:48:41,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878765482] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:48:41,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697087255] [2022-12-14 07:48:41,132 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:48:41,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:48:41,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:48:41,133 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:48:41,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-14 07:48:41,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:48:41,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:48:41,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 89 conjunts are in the unsatisfiable core [2022-12-14 07:48:41,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:48:44,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 0 proven. 3487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:44,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:48:48,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3487 backedges. 0 proven. 3487 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:48,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697087255] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:48:48,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [292800228] [2022-12-14 07:48:48,809 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:48:48,809 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:48:48,809 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:48:48,809 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:48:48,809 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:48:48,940 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:48:50,226 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '37782#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (not (= (ite (and (< |ULTIMATE.start_f_~i~0#1| 0) (not (= (mod |ULTIMATE.start_f_~i~0#1| 2) 0))) (+ (mod |ULTIMATE.start_f_~i~0#1| 2) (- 2)) (mod |ULTIMATE.start_f_~i~0#1| 2)) 0)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= |ULTIMATE.start_f_~k#1| 2) (<= 0 |ULTIMATE.start_f_~l#1|) (<= |ULTIMATE.start_f_~i~0#1| 2) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:48:50,226 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:48:50,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:48:50,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 261 [2022-12-14 07:48:50,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502596580] [2022-12-14 07:48:50,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:48:50,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 263 states [2022-12-14 07:48:50,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:48:50,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 263 interpolants. [2022-12-14 07:48:50,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15751, Invalid=59051, Unknown=0, NotChecked=0, Total=74802 [2022-12-14 07:48:50,232 INFO L87 Difference]: Start difference. First operand 814 states and 863 transitions. Second operand has 263 states, 262 states have (on average 2.049618320610687) internal successors, (537), 262 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:48:55,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:48:55,157 INFO L93 Difference]: Finished difference Result 1520 states and 1612 transitions. [2022-12-14 07:48:55,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2022-12-14 07:48:55,157 INFO L78 Accepts]: Start accepts. Automaton has has 263 states, 262 states have (on average 2.049618320610687) internal successors, (537), 262 states have internal predecessors, (537), 0 states have call successors, (0), 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 179 [2022-12-14 07:48:55,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:48:55,164 INFO L225 Difference]: With dead ends: 1520 [2022-12-14 07:48:55,164 INFO L226 Difference]: Without dead ends: 1433 [2022-12-14 07:48:55,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 359 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56979 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=29006, Invalid=100954, Unknown=0, NotChecked=0, Total=129960 [2022-12-14 07:48:55,169 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1451 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 07:48:55,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 122 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 07:48:55,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2022-12-14 07:48:55,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 993. [2022-12-14 07:48:55,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 992 states have (on average 1.0504032258064515) internal successors, (1042), 992 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:48:55,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1042 transitions. [2022-12-14 07:48:55,502 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1042 transitions. Word has length 179 [2022-12-14 07:48:55,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:48:55,503 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1042 transitions. [2022-12-14 07:48:55,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 263 states, 262 states have (on average 2.049618320610687) internal successors, (537), 262 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:48:55,503 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1042 transitions. [2022-12-14 07:48:55,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-12-14 07:48:55,504 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:48:55,504 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 28, 22, 13, 13, 13, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1] [2022-12-14 07:48:55,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-14 07:48:55,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:48:55,705 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:48:55,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:48:55,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1656915836, now seen corresponding path program 7 times [2022-12-14 07:48:55,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:48:55,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100787845] [2022-12-14 07:48:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:48:55,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:48:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:48:57,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 1907 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:48:57,661 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:48:57,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100787845] [2022-12-14 07:48:57,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100787845] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:48:57,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656520572] [2022-12-14 07:48:57,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:48:57,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:48:57,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:48:57,662 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:48:57,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-14 07:48:57,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:48:57,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 85 conjunts are in the unsatisfiable core [2022-12-14 07:48:57,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:49:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 1907 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:49:00,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:49:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1907 backedges. 0 proven. 1907 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:49:04,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656520572] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:49:04,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1053761609] [2022-12-14 07:49:04,313 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:49:04,313 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:49:04,313 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:49:04,314 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:49:04,314 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:49:04,615 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:49:08,240 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '42863#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:49:08,241 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:49:08,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:49:08,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 249 [2022-12-14 07:49:08,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076376930] [2022-12-14 07:49:08,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:49:08,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 251 states [2022-12-14 07:49:08,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:49:08,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 251 interpolants. [2022-12-14 07:49:08,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11311, Invalid=56029, Unknown=0, NotChecked=0, Total=67340 [2022-12-14 07:49:08,247 INFO L87 Difference]: Start difference. First operand 993 states and 1042 transitions. Second operand has 251 states, 250 states have (on average 2.196) internal successors, (549), 250 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:49:20,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:49:20,121 INFO L93 Difference]: Finished difference Result 2758 states and 2865 transitions. [2022-12-14 07:49:20,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 269 states. [2022-12-14 07:49:20,121 INFO L78 Accepts]: Start accepts. Automaton has has 251 states, 250 states have (on average 2.196) internal successors, (549), 250 states have internal predecessors, (549), 0 states have call successors, (0), 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 183 [2022-12-14 07:49:20,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:49:20,125 INFO L225 Difference]: With dead ends: 2758 [2022-12-14 07:49:20,125 INFO L226 Difference]: Without dead ends: 2695 [2022-12-14 07:49:20,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 814 GetRequests, 342 SyntacticMatches, 30 SemanticMatches, 442 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91514 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=41440, Invalid=155252, Unknown=0, NotChecked=0, Total=196692 [2022-12-14 07:49:20,133 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1992 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 1726 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 07:49:20,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1992 Valid, 305 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1726 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 07:49:20,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2695 states. [2022-12-14 07:49:20,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2695 to 1098. [2022-12-14 07:49:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 1097 states have (on average 1.0455788514129445) internal successors, (1147), 1097 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:49:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1147 transitions. [2022-12-14 07:49:20,637 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1147 transitions. Word has length 183 [2022-12-14 07:49:20,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:49:20,637 INFO L495 AbstractCegarLoop]: Abstraction has 1098 states and 1147 transitions. [2022-12-14 07:49:20,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 251 states, 250 states have (on average 2.196) internal successors, (549), 250 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:49:20,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1147 transitions. [2022-12-14 07:49:20,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-12-14 07:49:20,638 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:49:20,638 INFO L195 NwaCegarLoop]: trace histogram [35, 35, 35, 28, 15, 15, 15, 8, 8, 8, 7, 7, 1, 1, 1, 1, 1] [2022-12-14 07:49:20,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-14 07:49:20,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-14 07:49:20,839 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:49:20,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:49:20,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1600511221, now seen corresponding path program 8 times [2022-12-14 07:49:20,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:49:20,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117632283] [2022-12-14 07:49:20,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:49:20,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:49:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:49:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2906 backedges. 0 proven. 2906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:49:24,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:49:24,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117632283] [2022-12-14 07:49:24,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117632283] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:49:24,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315626592] [2022-12-14 07:49:24,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:49:24,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:49:24,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:49:24,318 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:49:24,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-14 07:49:24,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2022-12-14 07:49:24,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:49:24,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 103 conjunts are in the unsatisfiable core [2022-12-14 07:49:24,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:49:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2906 backedges. 0 proven. 2906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:49:27,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:49:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2906 backedges. 0 proven. 2906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:49:32,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315626592] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:49:32,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1127881390] [2022-12-14 07:49:32,381 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:49:32,381 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:49:32,381 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:49:32,381 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:49:32,381 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:49:32,688 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:49:36,809 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '50357#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:49:36,809 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:49:36,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:49:36,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 303 [2022-12-14 07:49:36,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287302891] [2022-12-14 07:49:36,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:49:36,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 305 states [2022-12-14 07:49:36,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:49:36,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 305 interpolants. [2022-12-14 07:49:36,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16737, Invalid=81545, Unknown=0, NotChecked=0, Total=98282 [2022-12-14 07:49:36,816 INFO L87 Difference]: Start difference. First operand 1098 states and 1147 transitions. Second operand has 305 states, 304 states have (on average 2.1809210526315788) internal successors, (663), 304 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:49:53,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:49:53,546 INFO L93 Difference]: Finished difference Result 2884 states and 3005 transitions. [2022-12-14 07:49:53,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 327 states. [2022-12-14 07:49:53,547 INFO L78 Accepts]: Start accepts. Automaton has has 305 states, 304 states have (on average 2.1809210526315788) internal successors, (663), 304 states have internal predecessors, (663), 0 states have call successors, (0), 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 221 [2022-12-14 07:49:53,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:49:53,551 INFO L225 Difference]: With dead ends: 2884 [2022-12-14 07:49:53,551 INFO L226 Difference]: Without dead ends: 2807 [2022-12-14 07:49:53,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 986 GetRequests, 413 SyntacticMatches, 37 SemanticMatches, 536 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135126 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=61603, Invalid=227303, Unknown=0, NotChecked=0, Total=288906 [2022-12-14 07:49:53,562 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2368 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2368 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 1992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 07:49:53,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2368 Valid, 363 Invalid, 1992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 07:49:53,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2022-12-14 07:49:54,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 1196. [2022-12-14 07:49:54,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1195 states have (on average 1.0418410041841004) internal successors, (1245), 1195 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:49:54,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1245 transitions. [2022-12-14 07:49:54,144 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1245 transitions. Word has length 221 [2022-12-14 07:49:54,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:49:54,145 INFO L495 AbstractCegarLoop]: Abstraction has 1196 states and 1245 transitions. [2022-12-14 07:49:54,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 305 states, 304 states have (on average 2.1809210526315788) internal successors, (663), 304 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:49:54,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1245 transitions. [2022-12-14 07:49:54,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-12-14 07:49:54,146 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:49:54,146 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 25, 25, 25, 16, 16, 16, 15, 15, 10, 1, 1, 1, 1, 1] [2022-12-14 07:49:54,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-14 07:49:54,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:49:54,348 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:49:54,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:49:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash 430357255, now seen corresponding path program 9 times [2022-12-14 07:49:54,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:49:54,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250649867] [2022-12-14 07:49:54,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:49:54,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:49:54,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:49:58,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 3356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:49:58,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:49:58,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250649867] [2022-12-14 07:49:58,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250649867] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:49:58,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412810428] [2022-12-14 07:49:58,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:49:58,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:49:58,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:49:58,285 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:49:58,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-14 07:49:58,371 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:49:58,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:49:58,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 115 conjunts are in the unsatisfiable core [2022-12-14 07:49:58,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:50:02,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 3356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:02,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:50:09,380 INFO L134 CoverageAnalysis]: Checked inductivity of 3356 backedges. 0 proven. 3356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:09,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412810428] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:50:09,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1949205073] [2022-12-14 07:50:09,382 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:50:09,382 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:50:09,382 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:50:09,382 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:50:09,382 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:50:09,675 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:50:13,342 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '58509#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:50:13,342 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:50:13,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:50:13,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113, 113] total 339 [2022-12-14 07:50:13,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812563538] [2022-12-14 07:50:13,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:50:13,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 341 states [2022-12-14 07:50:13,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:50:13,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 341 interpolants. [2022-12-14 07:50:13,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19933, Invalid=102217, Unknown=0, NotChecked=0, Total=122150 [2022-12-14 07:50:13,351 INFO L87 Difference]: Start difference. First operand 1196 states and 1245 transitions. Second operand has 341 states, 340 states have (on average 2.302941176470588) internal successors, (783), 340 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:50:38,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:50:38,795 INFO L93 Difference]: Finished difference Result 2907 states and 3040 transitions. [2022-12-14 07:50:38,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 395 states. [2022-12-14 07:50:38,796 INFO L78 Accepts]: Start accepts. Automaton has has 341 states, 340 states have (on average 2.302941176470588) internal successors, (783), 340 states have internal predecessors, (783), 0 states have call successors, (0), 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 261 [2022-12-14 07:50:38,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:50:38,800 INFO L225 Difference]: With dead ends: 2907 [2022-12-14 07:50:38,800 INFO L226 Difference]: Without dead ends: 2818 [2022-12-14 07:50:38,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1174 GetRequests, 519 SyntacticMatches, 27 SemanticMatches, 628 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175808 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=77290, Invalid=318980, Unknown=0, NotChecked=0, Total=396270 [2022-12-14 07:50:38,816 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2711 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2711 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 07:50:38,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2711 Valid, 382 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 07:50:38,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2022-12-14 07:50:39,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 1316. [2022-12-14 07:50:39,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 1315 states have (on average 1.050190114068441) internal successors, (1381), 1315 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:50:39,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1381 transitions. [2022-12-14 07:50:39,627 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1381 transitions. Word has length 261 [2022-12-14 07:50:39,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:50:39,628 INFO L495 AbstractCegarLoop]: Abstraction has 1316 states and 1381 transitions. [2022-12-14 07:50:39,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 341 states, 340 states have (on average 2.302941176470588) internal successors, (783), 340 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:50:39,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1381 transitions. [2022-12-14 07:50:39,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2022-12-14 07:50:39,630 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:50:39,630 INFO L195 NwaCegarLoop]: trace histogram [52, 52, 52, 44, 17, 17, 17, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1] [2022-12-14 07:50:39,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-12-14 07:50:39,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:39,831 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:50:39,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:50:39,832 INFO L85 PathProgramCache]: Analyzing trace with hash 442640564, now seen corresponding path program 10 times [2022-12-14 07:50:39,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:50:39,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308701844] [2022-12-14 07:50:39,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:50:39,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:50:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5989 backedges. 0 proven. 5989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:46,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:50:46,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308701844] [2022-12-14 07:50:46,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308701844] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:50:46,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996524258] [2022-12-14 07:50:46,952 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:50:46,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:50:46,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:50:46,953 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:50:46,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-14 07:50:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:50:47,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 141 conjunts are in the unsatisfiable core [2022-12-14 07:50:47,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:50:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5989 backedges. 0 proven. 5989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:50:53,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:51:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5989 backedges. 0 proven. 5989 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:51:03,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996524258] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:51:03,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1397044707] [2022-12-14 07:51:03,168 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:51:03,168 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:51:03,168 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:51:03,168 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:51:03,168 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:51:03,484 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:51:12,466 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '67280#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:51:12,466 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:51:12,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:51:12,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [139, 139, 139] total 417 [2022-12-14 07:51:12,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291569872] [2022-12-14 07:51:12,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:51:12,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 419 states [2022-12-14 07:51:12,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:51:12,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 419 interpolants. [2022-12-14 07:51:12,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32295, Invalid=150461, Unknown=0, NotChecked=0, Total=182756 [2022-12-14 07:51:12,479 INFO L87 Difference]: Start difference. First operand 1316 states and 1381 transitions. Second operand has 419 states, 418 states have (on average 2.145933014354067) internal successors, (897), 418 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:51:52,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:51:52,065 INFO L93 Difference]: Finished difference Result 4276 states and 4447 transitions. [2022-12-14 07:51:52,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 445 states. [2022-12-14 07:51:52,066 INFO L78 Accepts]: Start accepts. Automaton has has 419 states, 418 states have (on average 2.145933014354067) internal successors, (897), 418 states have internal predecessors, (897), 0 states have call successors, (0), 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 299 [2022-12-14 07:51:52,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:51:52,072 INFO L225 Difference]: With dead ends: 4276 [2022-12-14 07:51:52,072 INFO L226 Difference]: Without dead ends: 4165 [2022-12-14 07:51:52,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1338 GetRequests, 554 SyntacticMatches, 54 SemanticMatches, 730 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253764 ImplicationChecksByTransitivity, 44.6s TimeCoverageRelationStatistics Valid=117578, Invalid=417514, Unknown=0, NotChecked=0, Total=535092 [2022-12-14 07:51:52,093 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4625 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 2481 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4625 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 2501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 07:51:52,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4625 Valid, 445 Invalid, 2501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2481 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 07:51:52,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4165 states. [2022-12-14 07:51:53,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4165 to 1638. [2022-12-14 07:51:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1638 states, 1637 states have (on average 1.0403176542455712) internal successors, (1703), 1637 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:51:53,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1638 states to 1638 states and 1703 transitions. [2022-12-14 07:51:53,385 INFO L78 Accepts]: Start accepts. Automaton has 1638 states and 1703 transitions. Word has length 299 [2022-12-14 07:51:53,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:51:53,386 INFO L495 AbstractCegarLoop]: Abstraction has 1638 states and 1703 transitions. [2022-12-14 07:51:53,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 419 states, 418 states have (on average 2.145933014354067) internal successors, (897), 418 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:51:53,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1638 states and 1703 transitions. [2022-12-14 07:51:53,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2022-12-14 07:51:53,389 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:51:53,390 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 52, 19, 19, 19, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1] [2022-12-14 07:51:53,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-14 07:51:53,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-12-14 07:51:53,590 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:51:53,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:51:53,591 INFO L85 PathProgramCache]: Analyzing trace with hash -454927525, now seen corresponding path program 11 times [2022-12-14 07:51:53,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:51:53,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853556144] [2022-12-14 07:51:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:51:53,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:51:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:52:02,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 0 proven. 8174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:52:02,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:52:02,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853556144] [2022-12-14 07:52:02,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853556144] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:52:02,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204532323] [2022-12-14 07:52:02,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:52:02,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:52:02,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:52:02,739 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:52:02,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-14 07:52:03,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2022-12-14 07:52:03,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:52:03,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 163 conjunts are in the unsatisfiable core [2022-12-14 07:52:03,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:52:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 0 proven. 8174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:52:11,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:52:24,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8174 backedges. 0 proven. 8174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:52:24,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204532323] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:52:24,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [210391832] [2022-12-14 07:52:24,895 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:52:24,895 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:52:24,895 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:52:24,895 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:52:24,895 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:52:25,201 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:52:36,045 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '78861#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:52:36,045 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:52:36,045 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:52:36,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161, 161] total 483 [2022-12-14 07:52:36,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058001143] [2022-12-14 07:52:36,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:52:36,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 485 states [2022-12-14 07:52:36,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:52:36,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 485 interpolants. [2022-12-14 07:52:36,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43405, Invalid=200137, Unknown=0, NotChecked=0, Total=243542 [2022-12-14 07:52:36,062 INFO L87 Difference]: Start difference. First operand 1638 states and 1703 transitions. Second operand has 485 states, 484 states have (on average 2.1384297520661155) internal successors, (1035), 484 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:53:32,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:53:32,900 INFO L93 Difference]: Finished difference Result 4599 states and 4788 transitions. [2022-12-14 07:53:32,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 515 states. [2022-12-14 07:53:32,901 INFO L78 Accepts]: Start accepts. Automaton has has 485 states, 484 states have (on average 2.1384297520661155) internal successors, (1035), 484 states have internal predecessors, (1035), 0 states have call successors, (0), 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 345 [2022-12-14 07:53:32,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:53:32,922 INFO L225 Difference]: With dead ends: 4599 [2022-12-14 07:53:32,922 INFO L226 Difference]: Without dead ends: 4470 [2022-12-14 07:53:32,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1546 GetRequests, 639 SyntacticMatches, 63 SemanticMatches, 844 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339841 ImplicationChecksByTransitivity, 57.2s TimeCoverageRelationStatistics Valid=158098, Invalid=556772, Unknown=0, NotChecked=0, Total=714870 [2022-12-14 07:53:32,953 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4802 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 3000 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 3022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-14 07:53:32,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4802 Valid, 536 Invalid, 3022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 3000 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-14 07:53:32,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4470 states. [2022-12-14 07:53:34,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4470 to 1836. [2022-12-14 07:53:34,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1835 states have (on average 1.0359673024523162) internal successors, (1901), 1835 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:53:34,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 1901 transitions. [2022-12-14 07:53:34,629 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 1901 transitions. Word has length 345 [2022-12-14 07:53:34,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:53:34,629 INFO L495 AbstractCegarLoop]: Abstraction has 1836 states and 1901 transitions. [2022-12-14 07:53:34,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 485 states, 484 states have (on average 2.1384297520661155) internal successors, (1035), 484 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:53:34,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 1901 transitions. [2022-12-14 07:53:34,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2022-12-14 07:53:34,634 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:53:34,634 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 39, 39, 39, 22, 20, 20, 20, 19, 19, 1, 1, 1, 1, 1] [2022-12-14 07:53:34,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-12-14 07:53:34,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-14 07:53:34,835 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:53:34,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:53:34,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1070678535, now seen corresponding path program 12 times [2022-12-14 07:53:34,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:53:34,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733233877] [2022-12-14 07:53:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:53:34,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:53:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:53:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 6704 backedges. 0 proven. 6704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:53:43,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:53:43,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733233877] [2022-12-14 07:53:43,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733233877] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:53:43,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675803881] [2022-12-14 07:53:43,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 07:53:43,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:53:43,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:53:43,883 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:53:43,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-14 07:53:44,044 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 07:53:44,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:53:44,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 163 conjunts are in the unsatisfiable core [2022-12-14 07:53:44,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:53:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6704 backedges. 0 proven. 6704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:53:52,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:54:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 6704 backedges. 0 proven. 6704 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:54:05,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675803881] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:54:05,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1664210549] [2022-12-14 07:54:05,545 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:54:05,545 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:54:05,545 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:54:05,545 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:54:05,545 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:54:05,834 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:54:13,870 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '91483#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:54:13,870 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:54:13,870 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:54:13,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [161, 161, 161] total 483 [2022-12-14 07:54:13,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266314168] [2022-12-14 07:54:13,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:54:13,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 485 states [2022-12-14 07:54:13,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:54:13,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 485 interpolants. [2022-12-14 07:54:13,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39885, Invalid=203657, Unknown=0, NotChecked=0, Total=243542 [2022-12-14 07:54:13,886 INFO L87 Difference]: Start difference. First operand 1836 states and 1901 transitions. Second operand has 485 states, 484 states have (on average 2.262396694214876) internal successors, (1095), 484 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:55:15,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:55:15,378 INFO L93 Difference]: Finished difference Result 4313 states and 4494 transitions. [2022-12-14 07:55:15,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 555 states. [2022-12-14 07:55:15,379 INFO L78 Accepts]: Start accepts. Automaton has has 485 states, 484 states have (on average 2.262396694214876) internal successors, (1095), 484 states have internal predecessors, (1095), 0 states have call successors, (0), 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 365 [2022-12-14 07:55:15,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:55:15,385 INFO L225 Difference]: With dead ends: 4313 [2022-12-14 07:55:15,385 INFO L226 Difference]: Without dead ends: 4192 [2022-12-14 07:55:15,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1646 GetRequests, 719 SyntacticMatches, 43 SemanticMatches, 884 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352575 ImplicationChecksByTransitivity, 57.0s TimeCoverageRelationStatistics Valid=156958, Invalid=627152, Unknown=0, NotChecked=0, Total=784110 [2022-12-14 07:55:15,421 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4456 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 3080 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4456 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 3128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 3080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-14 07:55:15,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4456 Valid, 556 Invalid, 3128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 3080 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-14 07:55:15,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4192 states. [2022-12-14 07:55:16,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4192 to 1956. [2022-12-14 07:55:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1955 states have (on average 1.0419437340153452) internal successors, (2037), 1955 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:55:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 2037 transitions. [2022-12-14 07:55:16,789 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 2037 transitions. Word has length 365 [2022-12-14 07:55:16,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:55:16,790 INFO L495 AbstractCegarLoop]: Abstraction has 1956 states and 2037 transitions. [2022-12-14 07:55:16,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 485 states, 484 states have (on average 2.262396694214876) internal successors, (1095), 484 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:55:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 2037 transitions. [2022-12-14 07:55:16,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2022-12-14 07:55:16,792 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:55:16,792 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 74, 21, 21, 21, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2022-12-14 07:55:16,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-12-14 07:55:16,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-14 07:55:16,993 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:55:16,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:55:16,994 INFO L85 PathProgramCache]: Analyzing trace with hash 531301564, now seen corresponding path program 13 times [2022-12-14 07:55:16,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:55:16,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400192497] [2022-12-14 07:55:16,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:55:16,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:55:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:55:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14999 backedges. 0 proven. 14999 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:55:33,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:55:33,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400192497] [2022-12-14 07:55:33,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400192497] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:55:33,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93003857] [2022-12-14 07:55:33,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 07:55:33,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:55:33,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:55:33,205 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:55:33,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-14 07:55:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:55:33,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 213 conjunts are in the unsatisfiable core [2022-12-14 07:55:33,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:55:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 14999 backedges. 0 proven. 14999 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:55:46,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:56:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 14999 backedges. 0 proven. 14999 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:56:08,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93003857] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:56:08,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1295074857] [2022-12-14 07:56:08,867 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:56:08,867 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:56:08,868 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:56:08,868 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:56:08,868 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:56:09,207 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:56:26,490 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '104581#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:56:26,490 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:56:26,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:56:26,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [211, 211, 211] total 633 [2022-12-14 07:56:26,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862854378] [2022-12-14 07:56:26,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:56:26,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 635 states [2022-12-14 07:56:26,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:56:26,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 635 interpolants. [2022-12-14 07:56:26,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76015, Invalid=338077, Unknown=0, NotChecked=0, Total=414092 [2022-12-14 07:56:26,522 INFO L87 Difference]: Start difference. First operand 1956 states and 2037 transitions. Second operand has 635 states, 634 states have (on average 2.1151419558359623) internal successors, (1341), 634 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:58:37,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 07:58:37,125 INFO L93 Difference]: Finished difference Result 6424 states and 6675 transitions. [2022-12-14 07:58:37,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 669 states. [2022-12-14 07:58:37,126 INFO L78 Accepts]: Start accepts. Automaton has has 635 states, 634 states have (on average 2.1151419558359623) internal successors, (1341), 634 states have internal predecessors, (1341), 0 states have call successors, (0), 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 447 [2022-12-14 07:58:37,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 07:58:37,133 INFO L225 Difference]: With dead ends: 6424 [2022-12-14 07:58:37,133 INFO L226 Difference]: Without dead ends: 6249 [2022-12-14 07:58:37,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2006 GetRequests, 822 SyntacticMatches, 86 SemanticMatches, 1098 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579803 ImplicationChecksByTransitivity, 94.1s TimeCoverageRelationStatistics Valid=273152, Invalid=935748, Unknown=0, NotChecked=0, Total=1208900 [2022-12-14 07:58:37,192 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 7181 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 3860 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7181 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 3886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-14 07:58:37,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7181 Valid, 708 Invalid, 3886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3860 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-14 07:58:37,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2022-12-14 07:58:39,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 2462. [2022-12-14 07:58:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2462 states, 2461 states have (on average 1.033319788703779) internal successors, (2543), 2461 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:58:39,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2462 states to 2462 states and 2543 transitions. [2022-12-14 07:58:39,423 INFO L78 Accepts]: Start accepts. Automaton has 2462 states and 2543 transitions. Word has length 447 [2022-12-14 07:58:39,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 07:58:39,423 INFO L495 AbstractCegarLoop]: Abstraction has 2462 states and 2543 transitions. [2022-12-14 07:58:39,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 635 states, 634 states have (on average 2.1151419558359623) internal successors, (1341), 634 states have internal predecessors, (1341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 07:58:39,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2462 states and 2543 transitions. [2022-12-14 07:58:39,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-12-14 07:58:39,426 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 07:58:39,426 INFO L195 NwaCegarLoop]: trace histogram [61, 61, 61, 43, 43, 43, 40, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1] [2022-12-14 07:58:39,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-12-14 07:58:39,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-12-14 07:58:39,628 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-14 07:58:39,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 07:58:39,629 INFO L85 PathProgramCache]: Analyzing trace with hash 310227275, now seen corresponding path program 14 times [2022-12-14 07:58:39,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 07:58:39,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179746011] [2022-12-14 07:58:39,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 07:58:39,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 07:58:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 07:58:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 11498 backedges. 0 proven. 11498 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:58:55,922 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 07:58:55,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179746011] [2022-12-14 07:58:55,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179746011] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 07:58:55,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101361345] [2022-12-14 07:58:55,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 07:58:55,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 07:58:55,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 07:58:55,923 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 07:58:55,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8744cb0d-00fb-44ee-a59d-1093e32117c5/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-12-14 07:58:56,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 41 check-sat command(s) [2022-12-14 07:58:56,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 07:58:56,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 211 conjunts are in the unsatisfiable core [2022-12-14 07:58:56,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 07:59:11,137 INFO L134 CoverageAnalysis]: Checked inductivity of 11498 backedges. 0 proven. 11498 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:59:11,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:59:33,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11498 backedges. 0 proven. 11498 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 07:59:33,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101361345] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 07:59:33,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [829965378] [2022-12-14 07:59:33,511 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 07:59:33,512 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 07:59:33,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 07:59:33,512 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 07:59:33,512 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 07:59:33,793 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 07:59:45,933 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '121644#(and (<= |ULTIMATE.start_main_#t~nondet2#1| 2147483647) (<= |ULTIMATE.start_main_#t~nondet3#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet3#1|)) (<= |ULTIMATE.start_f_~k#1| 2147483647) (<= 0 (+ 2147483648 |ULTIMATE.start_main_#t~nondet2#1|)) (<= 0 (+ |ULTIMATE.start_f_#in~k#1| 2147483648)) (<= 0 |ULTIMATE.start_f_~j~0#1|) (<= 0 (+ |ULTIMATE.start_f_~k#1| 2147483648)) (<= 0 (+ |ULTIMATE.start_f_#in~l#1| 2147483648)) (< 2147483647 (+ |ULTIMATE.start_f_~i~0#1| |ULTIMATE.start_f_~j~0#1|)) (<= |ULTIMATE.start_f_#in~l#1| 2147483647) (<= 0 (+ |ULTIMATE.start_f_~l#1| 2147483648)) (<= |ULTIMATE.start_f_~j~0#1| 2147483647) (<= |ULTIMATE.start_f_~l#1| |ULTIMATE.start_f_~j~0#1|) (<= |ULTIMATE.start_f_#in~k#1| 2147483647))' at error location [2022-12-14 07:59:45,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 07:59:45,933 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 07:59:45,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [209, 209, 209] total 627 [2022-12-14 07:59:45,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994863036] [2022-12-14 07:59:45,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 07:59:45,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 629 states [2022-12-14 07:59:45,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 07:59:45,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 629 interpolants. [2022-12-14 07:59:45,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67453, Invalid=338953, Unknown=0, NotChecked=0, Total=406406 [2022-12-14 07:59:45,959 INFO L87 Difference]: Start difference. First operand 2462 states and 2543 transitions. Second operand has 629 states, 628 states have (on average 2.2213375796178343) internal successors, (1395), 628 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)