./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 --- 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-5e519f3 [2022-11-03 03:53:53,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:53:53,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:53:53,500 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:53:53,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:53:53,506 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:53:53,508 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:53:53,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:53:53,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:53:53,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:53:53,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:53:53,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:53:53,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:53:53,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:53:53,520 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:53:53,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:53:53,525 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:53:53,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:53:53,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:53:53,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:53:53,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:53:53,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:53:53,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:53:53,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:53:53,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:53:53,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:53:53,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:53:53,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:53:53,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:53:53,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:53:53,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:53:53,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:53:53,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:53:53,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:53:53,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:53:53,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:53:53,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:53:53,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:53:53,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:53:53,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:53:53,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:53:53,578 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 03:53:53,623 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:53:53,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:53:53,624 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:53:53,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:53:53,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:53:53,626 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:53:53,626 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:53:53,626 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:53:53,627 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:53:53,627 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:53:53,628 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:53:53,629 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:53:53,629 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:53:53,629 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:53:53,629 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:53:53,630 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:53:53,630 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:53:53,630 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:53:53,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:53:53,631 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:53:53,631 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 03:53:53,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:53:53,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:53:53,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:53:53,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:53:53,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:53:53,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:53:53,635 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 03:53:53,635 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:53:53,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:53:53,635 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:53:53,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:53:53,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:53:53,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:53:53,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:53:53,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:53:53,637 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:53:53,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:53:53,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:53:53,638 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:53:53,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:53:53,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:53:53,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:53:53,639 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_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 [2022-11-03 03:53:54,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:53:54,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:53:54,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:53:54,064 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:53:54,065 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:53:54,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2022-11-03 03:53:54,142 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/data/558f51ee7/92888b375700444aa3125911196d4b12/FLAG1643d1899 [2022-11-03 03:53:54,725 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:53:54,726 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2022-11-03 03:53:54,734 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/data/558f51ee7/92888b375700444aa3125911196d4b12/FLAG1643d1899 [2022-11-03 03:53:55,087 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/data/558f51ee7/92888b375700444aa3125911196d4b12 [2022-11-03 03:53:55,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:53:55,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:53:55,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:53:55,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:53:55,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:53:55,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5850681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55, skipping insertion in model container [2022-11-03 03:53:55,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:53:55,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:53:55,374 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c[728,741] [2022-11-03 03:53:55,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:53:55,432 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:53:55,445 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c[728,741] [2022-11-03 03:53:55,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:53:55,491 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:53:55,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55 WrapperNode [2022-11-03 03:53:55,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:53:55,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:53:55,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:53:55,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:53:55,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,570 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 124 [2022-11-03 03:53:55,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:53:55,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:53:55,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:53:55,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:53:55,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,621 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:53:55,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:53:55,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:53:55,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:53:55,656 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55" (1/1) ... [2022-11-03 03:53:55,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:53:55,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:55,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:53:55,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:53:55,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:53:55,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:53:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-03 03:53:55,752 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-03 03:53:55,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:53:55,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:53:55,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 03:53:55,753 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 03:53:55,894 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:53:55,897 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:53:56,412 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:53:56,504 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:53:56,504 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 03:53:56,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:53:56 BoogieIcfgContainer [2022-11-03 03:53:56,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:53:56,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:53:56,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:53:56,514 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:53:56,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:53:55" (1/3) ... [2022-11-03 03:53:56,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bbe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:53:56, skipping insertion in model container [2022-11-03 03:53:56,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:53:55" (2/3) ... [2022-11-03 03:53:56,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64bbe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:53:56, skipping insertion in model container [2022-11-03 03:53:56,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:53:56" (3/3) ... [2022-11-03 03:53:56,518 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2022-11-03 03:53:56,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:53:56,541 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-03 03:53:56,610 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:53:56,623 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;@152472ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:53:56,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-03 03:53:56,628 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 64 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-03 03:53:56,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 03:53:56,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:56,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:56,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:53:56,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:56,650 INFO L85 PathProgramCache]: Analyzing trace with hash 569497008, now seen corresponding path program 1 times [2022-11-03 03:53:56,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:56,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593265502] [2022-11-03 03:53:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:56,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:56,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:56,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593265502] [2022-11-03 03:53:56,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593265502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:56,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:56,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:53:56,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120890441] [2022-11-03 03:53:56,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:56,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:53:56,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:56,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:53:56,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:53:56,974 INFO L87 Difference]: Start difference. First operand has 71 states, 45 states have (on average 1.7333333333333334) internal successors, (78), 64 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:57,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:57,052 INFO L93 Difference]: Finished difference Result 138 states and 177 transitions. [2022-11-03 03:53:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:53:57,055 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 03:53:57,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:57,069 INFO L225 Difference]: With dead ends: 138 [2022-11-03 03:53:57,070 INFO L226 Difference]: Without dead ends: 62 [2022-11-03 03:53:57,074 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 [2022-11-03 03:53:57,080 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:57,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:53:57,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-03 03:53:57,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-11-03 03:53:57,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.5365853658536586) internal successors, (63), 56 states have internal predecessors, (63), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:53:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2022-11-03 03:53:57,149 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 8 [2022-11-03 03:53:57,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:57,151 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2022-11-03 03:53:57,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2022-11-03 03:53:57,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-03 03:53:57,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:57,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:57,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:53:57,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:53:57,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:57,156 INFO L85 PathProgramCache]: Analyzing trace with hash 568405826, now seen corresponding path program 1 times [2022-11-03 03:53:57,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:57,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200181308] [2022-11-03 03:53:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:57,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:57,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:57,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200181308] [2022-11-03 03:53:57,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200181308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:57,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:57,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:57,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575960154] [2022-11-03 03:53:57,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:57,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:53:57,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:57,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:53:57,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:53:57,280 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:57,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:57,411 INFO L93 Difference]: Finished difference Result 160 states and 194 transitions. [2022-11-03 03:53:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:53:57,412 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-03 03:53:57,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:57,415 INFO L225 Difference]: With dead ends: 160 [2022-11-03 03:53:57,415 INFO L226 Difference]: Without dead ends: 100 [2022-11-03 03:53:57,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:53:57,417 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 53 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:57,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 167 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:57,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-03 03:53:57,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 92. [2022-11-03 03:53:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 70 states have (on average 1.5) internal successors, (105), 85 states have internal predecessors, (105), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:53:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2022-11-03 03:53:57,435 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 113 transitions. Word has length 8 [2022-11-03 03:53:57,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:57,436 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 113 transitions. [2022-11-03 03:53:57,436 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 113 transitions. [2022-11-03 03:53:57,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-03 03:53:57,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:57,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:57,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:53:57,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:53:57,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash -479290295, now seen corresponding path program 1 times [2022-11-03 03:53:57,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:57,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827639101] [2022-11-03 03:53:57,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:57,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:57,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:57,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:57,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827639101] [2022-11-03 03:53:57,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827639101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:57,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:57,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:53:57,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302872842] [2022-11-03 03:53:57,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:57,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:53:57,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:57,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:53:57,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:53:57,617 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:57,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:57,748 INFO L93 Difference]: Finished difference Result 108 states and 127 transitions. [2022-11-03 03:53:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:53:57,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-03 03:53:57,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:57,750 INFO L225 Difference]: With dead ends: 108 [2022-11-03 03:53:57,750 INFO L226 Difference]: Without dead ends: 106 [2022-11-03 03:53:57,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:57,752 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 66 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:57,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 223 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:57,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-03 03:53:57,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2022-11-03 03:53:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 72 states have (on average 1.4722222222222223) internal successors, (106), 87 states have internal predecessors, (106), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:53:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 114 transitions. [2022-11-03 03:53:57,767 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 114 transitions. Word has length 12 [2022-11-03 03:53:57,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:57,768 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 114 transitions. [2022-11-03 03:53:57,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:57,768 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 114 transitions. [2022-11-03 03:53:57,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 03:53:57,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:57,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:57,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:53:57,770 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:53:57,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1973097156, now seen corresponding path program 1 times [2022-11-03 03:53:57,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:57,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554002266] [2022-11-03 03:53:57,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:57,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:57,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:57,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554002266] [2022-11-03 03:53:57,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554002266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:57,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:57,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:53:57,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744528727] [2022-11-03 03:53:57,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:57,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:53:57,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:57,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:53:57,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:53:57,900 INFO L87 Difference]: Start difference. First operand 94 states and 114 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:58,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:58,030 INFO L93 Difference]: Finished difference Result 204 states and 248 transitions. [2022-11-03 03:53:58,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:53:58,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-03 03:53:58,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:58,032 INFO L225 Difference]: With dead ends: 204 [2022-11-03 03:53:58,032 INFO L226 Difference]: Without dead ends: 112 [2022-11-03 03:53:58,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:58,035 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 87 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:58,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 177 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:58,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-03 03:53:58,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 98. [2022-11-03 03:53:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 91 states have internal predecessors, (110), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:53:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 118 transitions. [2022-11-03 03:53:58,050 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 118 transitions. Word has length 13 [2022-11-03 03:53:58,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:58,051 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 118 transitions. [2022-11-03 03:53:58,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:58,051 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 118 transitions. [2022-11-03 03:53:58,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:53:58,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:58,053 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:58,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 03:53:58,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:53:58,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:58,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1639843504, now seen corresponding path program 1 times [2022-11-03 03:53:58,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:58,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581500897] [2022-11-03 03:53:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:58,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 03:53:58,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:58,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581500897] [2022-11-03 03:53:58,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581500897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:58,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:58,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:53:58,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052795175] [2022-11-03 03:53:58,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:58,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:53:58,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:58,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:53:58,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:58,100 INFO L87 Difference]: Start difference. First operand 98 states and 118 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:58,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:58,138 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2022-11-03 03:53:58,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:53:58,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 03:53:58,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:58,141 INFO L225 Difference]: With dead ends: 102 [2022-11-03 03:53:58,141 INFO L226 Difference]: Without dead ends: 101 [2022-11-03 03:53:58,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:53:58,143 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 3 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:58,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 123 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:53:58,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-03 03:53:58,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2022-11-03 03:53:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 89 states have internal predecessors, (107), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:53:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 115 transitions. [2022-11-03 03:53:58,157 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 115 transitions. Word has length 14 [2022-11-03 03:53:58,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:58,157 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 115 transitions. [2022-11-03 03:53:58,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:58,158 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 115 transitions. [2022-11-03 03:53:58,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 03:53:58,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:58,159 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:58,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 03:53:58,160 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:53:58,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:58,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1639845682, now seen corresponding path program 1 times [2022-11-03 03:53:58,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:58,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561141405] [2022-11-03 03:53:58,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:58,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:58,273 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:58,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561141405] [2022-11-03 03:53:58,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561141405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:53:58,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722293236] [2022-11-03 03:53:58,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:58,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:58,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:58,277 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:58,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:53:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:58,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:53:58,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:58,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:53:58,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:58,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722293236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:58,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:53:58,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-03 03:53:58,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448366092] [2022-11-03 03:53:58,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:58,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:53:58,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:58,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:53:58,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:58,442 INFO L87 Difference]: Start difference. First operand 96 states and 115 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:58,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:58,514 INFO L93 Difference]: Finished difference Result 112 states and 138 transitions. [2022-11-03 03:53:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:53:58,515 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-03 03:53:58,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:58,518 INFO L225 Difference]: With dead ends: 112 [2022-11-03 03:53:58,518 INFO L226 Difference]: Without dead ends: 111 [2022-11-03 03:53:58,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:58,529 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 8 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:58,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 191 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:58,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-03 03:53:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 98. [2022-11-03 03:53:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 1.4155844155844155) internal successors, (109), 91 states have internal predecessors, (109), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:53:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2022-11-03 03:53:58,543 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 14 [2022-11-03 03:53:58,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:58,543 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2022-11-03 03:53:58,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2022-11-03 03:53:58,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 03:53:58,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:58,545 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:58,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:58,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:58,771 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:53:58,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:58,771 INFO L85 PathProgramCache]: Analyzing trace with hash -381684116, now seen corresponding path program 1 times [2022-11-03 03:53:58,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:58,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144139305] [2022-11-03 03:53:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:58,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 03:53:58,863 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:58,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144139305] [2022-11-03 03:53:58,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144139305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:58,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:58,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:53:58,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167100659] [2022-11-03 03:53:58,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:58,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:53:58,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:53:58,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:53:58,868 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:53:58,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:58,978 INFO L93 Difference]: Finished difference Result 136 states and 164 transitions. [2022-11-03 03:53:58,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:53:58,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-11-03 03:53:58,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:58,980 INFO L225 Difference]: With dead ends: 136 [2022-11-03 03:53:58,980 INFO L226 Difference]: Without dead ends: 134 [2022-11-03 03:53:58,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:58,982 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 86 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:58,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 174 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:58,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-03 03:53:58,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 116. [2022-11-03 03:53:58,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.4361702127659575) internal successors, (135), 108 states have internal predecessors, (135), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:53:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2022-11-03 03:53:59,000 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 143 transitions. Word has length 20 [2022-11-03 03:53:59,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:59,000 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 143 transitions. [2022-11-03 03:53:59,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:53:59,001 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 143 transitions. [2022-11-03 03:53:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 03:53:59,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:59,002 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:59,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 03:53:59,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:53:59,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:59,010 INFO L85 PathProgramCache]: Analyzing trace with hash -404117582, now seen corresponding path program 1 times [2022-11-03 03:53:59,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:59,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827349722] [2022-11-03 03:53:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:59,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:59,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 03:53:59,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:59,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827349722] [2022-11-03 03:53:59,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827349722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:59,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:59,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:53:59,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261072594] [2022-11-03 03:53:59,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:59,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:53:59,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:59,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:53:59,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:53:59,066 INFO L87 Difference]: Start difference. First operand 116 states and 143 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:59,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:59,125 INFO L93 Difference]: Finished difference Result 142 states and 175 transitions. [2022-11-03 03:53:59,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:53:59,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-03 03:53:59,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:59,127 INFO L225 Difference]: With dead ends: 142 [2022-11-03 03:53:59,127 INFO L226 Difference]: Without dead ends: 140 [2022-11-03 03:53:59,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:53:59,128 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 8 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:59,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 178 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:53:59,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-03 03:53:59,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 116. [2022-11-03 03:53:59,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 95 states have (on average 1.4) internal successors, (133), 108 states have internal predecessors, (133), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:53:59,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 141 transitions. [2022-11-03 03:53:59,168 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 141 transitions. Word has length 18 [2022-11-03 03:53:59,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:59,168 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 141 transitions. [2022-11-03 03:53:59,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:59,169 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 141 transitions. [2022-11-03 03:53:59,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 03:53:59,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:59,174 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:59,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 03:53:59,174 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:53:59,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:59,175 INFO L85 PathProgramCache]: Analyzing trace with hash -838765420, now seen corresponding path program 1 times [2022-11-03 03:53:59,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:59,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782961556] [2022-11-03 03:53:59,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:59,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:59,278 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 03:53:59,279 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:59,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782961556] [2022-11-03 03:53:59,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782961556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:59,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:59,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:53:59,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176705179] [2022-11-03 03:53:59,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:59,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:53:59,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:59,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:53:59,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:53:59,282 INFO L87 Difference]: Start difference. First operand 116 states and 141 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:53:59,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:59,383 INFO L93 Difference]: Finished difference Result 129 states and 154 transitions. [2022-11-03 03:53:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:53:59,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-03 03:53:59,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:59,388 INFO L225 Difference]: With dead ends: 129 [2022-11-03 03:53:59,388 INFO L226 Difference]: Without dead ends: 127 [2022-11-03 03:53:59,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:59,392 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 73 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:59,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 175 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:59,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-03 03:53:59,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 113. [2022-11-03 03:53:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.391304347826087) internal successors, (128), 105 states have internal predecessors, (128), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:53:59,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2022-11-03 03:53:59,405 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 22 [2022-11-03 03:53:59,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:59,409 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2022-11-03 03:53:59,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 03:53:59,409 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2022-11-03 03:53:59,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 03:53:59,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:59,415 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:59,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 03:53:59,416 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:53:59,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash -37307548, now seen corresponding path program 1 times [2022-11-03 03:53:59,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:59,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340901263] [2022-11-03 03:53:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:59,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:59,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:53:59,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:59,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340901263] [2022-11-03 03:53:59,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340901263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:59,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:59,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:53:59,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461261541] [2022-11-03 03:53:59,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:59,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:53:59,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:53:59,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:53:59,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:53:59,519 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:53:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:59,622 INFO L93 Difference]: Finished difference Result 124 states and 150 transitions. [2022-11-03 03:53:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:53:59,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2022-11-03 03:53:59,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:59,624 INFO L225 Difference]: With dead ends: 124 [2022-11-03 03:53:59,624 INFO L226 Difference]: Without dead ends: 122 [2022-11-03 03:53:59,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:59,625 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 82 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:59,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 166 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:59,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-03 03:53:59,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 107. [2022-11-03 03:53:59,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.3636363636363635) internal successors, (120), 99 states have internal predecessors, (120), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:53:59,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2022-11-03 03:53:59,635 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 26 [2022-11-03 03:53:59,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:59,636 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2022-11-03 03:53:59,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:53:59,636 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2022-11-03 03:53:59,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 03:53:59,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:59,637 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:53:59,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 03:53:59,638 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:53:59,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:59,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1627575823, now seen corresponding path program 1 times [2022-11-03 03:53:59,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:53:59,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944124913] [2022-11-03 03:53:59,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:59,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:53:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:53:59,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:53:59,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944124913] [2022-11-03 03:53:59,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944124913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:53:59,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737083797] [2022-11-03 03:53:59,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:59,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:53:59,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:53:59,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:53:59,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 03:53:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:59,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 03:53:59,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:53:59,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:00,399 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:54:00,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737083797] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:54:00,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:54:00,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 10] total 16 [2022-11-03 03:54:00,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117359128] [2022-11-03 03:54:00,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:00,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:54:00,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:00,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:54:00,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:54:00,402 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:54:00,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:00,487 INFO L93 Difference]: Finished difference Result 143 states and 165 transitions. [2022-11-03 03:54:00,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:54:00,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-11-03 03:54:00,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:00,491 INFO L225 Difference]: With dead ends: 143 [2022-11-03 03:54:00,491 INFO L226 Difference]: Without dead ends: 111 [2022-11-03 03:54:00,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:54:00,492 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 1 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:00,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 305 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:54:00,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-03 03:54:00,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2022-11-03 03:54:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 99 states have internal predecessors, (118), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:54:00,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 126 transitions. [2022-11-03 03:54:00,506 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 126 transitions. Word has length 28 [2022-11-03 03:54:00,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:00,506 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 126 transitions. [2022-11-03 03:54:00,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:54:00,506 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 126 transitions. [2022-11-03 03:54:00,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-03 03:54:00,508 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:00,508 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:00,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:00,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 03:54:00,735 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:54:00,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:00,735 INFO L85 PathProgramCache]: Analyzing trace with hash -605365364, now seen corresponding path program 1 times [2022-11-03 03:54:00,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:00,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592277477] [2022-11-03 03:54:00,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:00,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:00,796 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:54:00,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:00,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592277477] [2022-11-03 03:54:00,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592277477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:00,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:00,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:54:00,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541938847] [2022-11-03 03:54:00,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:00,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:54:00,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:00,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:54:00,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:54:00,798 INFO L87 Difference]: Start difference. First operand 107 states and 126 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:54:00,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:00,874 INFO L93 Difference]: Finished difference Result 118 states and 138 transitions. [2022-11-03 03:54:00,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:54:00,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2022-11-03 03:54:00,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:00,876 INFO L225 Difference]: With dead ends: 118 [2022-11-03 03:54:00,876 INFO L226 Difference]: Without dead ends: 116 [2022-11-03 03:54:00,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:54:00,877 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 70 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:00,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 166 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:54:00,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-03 03:54:00,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 102. [2022-11-03 03:54:00,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 85 states have (on average 1.3294117647058823) internal successors, (113), 94 states have internal predecessors, (113), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:54:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 121 transitions. [2022-11-03 03:54:00,887 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 121 transitions. Word has length 28 [2022-11-03 03:54:00,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:00,887 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 121 transitions. [2022-11-03 03:54:00,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:54:00,888 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 121 transitions. [2022-11-03 03:54:00,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-03 03:54:00,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:00,889 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:00,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 03:54:00,889 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:54:00,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash -2016296670, now seen corresponding path program 1 times [2022-11-03 03:54:00,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:00,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963991037] [2022-11-03 03:54:00,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:00,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:00,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:54:01,003 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:01,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963991037] [2022-11-03 03:54:01,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963991037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:54:01,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533716258] [2022-11-03 03:54:01,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:01,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:01,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:01,005 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:01,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 03:54:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:01,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:54:01,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 03:54:01,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:01,502 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:54:01,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533716258] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:54:01,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2031216047] [2022-11-03 03:54:01,524 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2022-11-03 03:54:01,525 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:54:01,529 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:54:01,535 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:54:01,535 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:54:01,708 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 58 for LOIs [2022-11-03 03:54:01,800 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:54:03,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2031216047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:03,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:54:03,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 9, 7] total 23 [2022-11-03 03:54:03,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332415008] [2022-11-03 03:54:03,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:03,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:54:03,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:03,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:54:03,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2022-11-03 03:54:03,083 INFO L87 Difference]: Start difference. First operand 102 states and 121 transitions. Second operand has 10 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 03:54:03,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:03,327 INFO L93 Difference]: Finished difference Result 232 states and 274 transitions. [2022-11-03 03:54:03,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:54:03,328 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2022-11-03 03:54:03,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:03,329 INFO L225 Difference]: With dead ends: 232 [2022-11-03 03:54:03,329 INFO L226 Difference]: Without dead ends: 132 [2022-11-03 03:54:03,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2022-11-03 03:54:03,332 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 90 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:03,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 359 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:54:03,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-03 03:54:03,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 96. [2022-11-03 03:54:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 78 states have (on average 1.3076923076923077) internal successors, (102), 88 states have internal predecessors, (102), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-03 03:54:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2022-11-03 03:54:03,349 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 32 [2022-11-03 03:54:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:03,351 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2022-11-03 03:54:03,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 03:54:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2022-11-03 03:54:03,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-03 03:54:03,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:03,354 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:03,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:03,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:03,574 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:54:03,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:03,575 INFO L85 PathProgramCache]: Analyzing trace with hash -749408735, now seen corresponding path program 1 times [2022-11-03 03:54:03,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:03,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130989754] [2022-11-03 03:54:03,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:03,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:03,771 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 03:54:03,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:03,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130989754] [2022-11-03 03:54:03,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130989754] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:54:03,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70983993] [2022-11-03 03:54:03,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:03,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:03,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:03,774 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:03,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 03:54:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:03,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:54:03,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 03:54:03,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:04,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70983993] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:54:04,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2098834927] [2022-11-03 03:54:04,175 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 03:54:04,175 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:54:04,175 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:54:04,176 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:54:04,176 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:54:04,470 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:54:04,588 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:54:07,092 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4626#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520) 0) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:54:07,092 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:54:07,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:54:07,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 7] total 16 [2022-11-03 03:54:07,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427030787] [2022-11-03 03:54:07,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:54:07,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 03:54:07,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:07,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 03:54:07,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=856, Unknown=0, NotChecked=0, Total=992 [2022-11-03 03:54:07,095 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-03 03:54:07,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:07,617 INFO L93 Difference]: Finished difference Result 257 states and 297 transitions. [2022-11-03 03:54:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 03:54:07,618 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 41 [2022-11-03 03:54:07,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:07,619 INFO L225 Difference]: With dead ends: 257 [2022-11-03 03:54:07,619 INFO L226 Difference]: Without dead ends: 146 [2022-11-03 03:54:07,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 94 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=230, Invalid=1492, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 03:54:07,620 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 60 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:07,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 629 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:54:07,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-03 03:54:07,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 98. [2022-11-03 03:54:07,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 80 states have (on average 1.2625) internal successors, (101), 89 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:54:07,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2022-11-03 03:54:07,656 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 41 [2022-11-03 03:54:07,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:07,656 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2022-11-03 03:54:07,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 4 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-03 03:54:07,657 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2022-11-03 03:54:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-03 03:54:07,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:07,658 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:07,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:07,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-03 03:54:07,882 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:54:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:07,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1160168471, now seen corresponding path program 1 times [2022-11-03 03:54:07,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:07,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509423856] [2022-11-03 03:54:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:07,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:07,988 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:07,989 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:07,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509423856] [2022-11-03 03:54:07,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509423856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:54:07,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799320806] [2022-11-03 03:54:07,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:07,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:07,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:07,991 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:08,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 03:54:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:08,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:54:08,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:54:08,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:08,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799320806] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:54:08,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [606657598] [2022-11-03 03:54:08,269 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2022-11-03 03:54:08,269 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:54:08,270 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:54:08,270 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:54:08,270 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:54:08,674 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:54:08,772 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:54:10,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [606657598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:10,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:54:10,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [6, 6, 6] total 34 [2022-11-03 03:54:10,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293134471] [2022-11-03 03:54:10,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:10,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 03:54:10,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:10,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 03:54:10,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 03:54:10,319 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 22 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:54:11,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:11,233 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2022-11-03 03:54:11,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 03:54:11,234 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 49 [2022-11-03 03:54:11,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:11,236 INFO L225 Difference]: With dead ends: 151 [2022-11-03 03:54:11,236 INFO L226 Difference]: Without dead ends: 150 [2022-11-03 03:54:11,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=306, Invalid=1416, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 03:54:11,238 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 112 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:11,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 205 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 308 Invalid, 0 Unknown, 3 Unchecked, 0.5s Time] [2022-11-03 03:54:11,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-03 03:54:11,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 118. [2022-11-03 03:54:11,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.263157894736842) internal successors, (120), 106 states have internal predecessors, (120), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-03 03:54:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2022-11-03 03:54:11,260 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 49 [2022-11-03 03:54:11,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:11,260 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2022-11-03 03:54:11,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:54:11,261 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2022-11-03 03:54:11,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-03 03:54:11,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:11,262 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:11,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-03 03:54:11,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-03 03:54:11,479 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:54:11,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:11,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1165133808, now seen corresponding path program 1 times [2022-11-03 03:54:11,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:11,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140623297] [2022-11-03 03:54:11,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:11,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:11,641 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:11,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140623297] [2022-11-03 03:54:11,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140623297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:54:11,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879236402] [2022-11-03 03:54:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:11,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:11,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:11,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:11,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 03:54:11,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:11,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:54:11,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:54:11,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:11,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879236402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:54:11,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1238372760] [2022-11-03 03:54:11,995 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 03:54:11,995 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:54:11,996 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:54:11,996 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:54:11,996 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:54:12,353 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:54:12,516 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:54:14,265 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6085#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520) 0) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:54:14,265 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:54:14,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:54:14,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-03 03:54:14,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646948498] [2022-11-03 03:54:14,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:54:14,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 03:54:14,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:14,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 03:54:14,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2022-11-03 03:54:14,268 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:54:14,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:14,757 INFO L93 Difference]: Finished difference Result 310 states and 362 transitions. [2022-11-03 03:54:14,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 03:54:14,759 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 50 [2022-11-03 03:54:14,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:14,760 INFO L225 Difference]: With dead ends: 310 [2022-11-03 03:54:14,760 INFO L226 Difference]: Without dead ends: 220 [2022-11-03 03:54:14,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 03:54:14,762 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 149 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:14,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 222 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:54:14,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-03 03:54:14,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 136. [2022-11-03 03:54:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 113 states have (on average 1.247787610619469) internal successors, (141), 124 states have internal predecessors, (141), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-03 03:54:14,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2022-11-03 03:54:14,797 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 50 [2022-11-03 03:54:14,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:14,798 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2022-11-03 03:54:14,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 13 states have internal predecessors, (70), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:54:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2022-11-03 03:54:14,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 03:54:14,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:14,799 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:14,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:15,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-03 03:54:15,008 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:54:15,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:15,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1769600555, now seen corresponding path program 1 times [2022-11-03 03:54:15,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:15,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719918954] [2022-11-03 03:54:15,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:15,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:15,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:15,160 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:15,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:15,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719918954] [2022-11-03 03:54:15,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719918954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:54:15,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377381247] [2022-11-03 03:54:15,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:15,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:15,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:15,162 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:15,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-03 03:54:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:15,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:54:15,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:15,337 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:54:15,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:15,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377381247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:54:15,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [558486085] [2022-11-03 03:54:15,499 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-03 03:54:15,499 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:54:15,500 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:54:15,500 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:54:15,500 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:54:15,942 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:54:16,041 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:54:18,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [558486085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:18,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:54:18,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [6, 6, 6] total 35 [2022-11-03 03:54:18,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517199] [2022-11-03 03:54:18,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:18,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-03 03:54:18,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:18,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-03 03:54:18,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=991, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 03:54:18,441 INFO L87 Difference]: Start difference. First operand 136 states and 158 transitions. Second operand has 23 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:54:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:19,530 INFO L93 Difference]: Finished difference Result 171 states and 198 transitions. [2022-11-03 03:54:19,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-03 03:54:19,531 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 51 [2022-11-03 03:54:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:19,533 INFO L225 Difference]: With dead ends: 171 [2022-11-03 03:54:19,533 INFO L226 Difference]: Without dead ends: 170 [2022-11-03 03:54:19,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=313, Invalid=1493, Unknown=0, NotChecked=0, Total=1806 [2022-11-03 03:54:19,535 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 116 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:19,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 232 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 386 Invalid, 0 Unknown, 64 Unchecked, 0.6s Time] [2022-11-03 03:54:19,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-03 03:54:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 138. [2022-11-03 03:54:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 115 states have (on average 1.2434782608695651) internal successors, (143), 126 states have internal predecessors, (143), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-03 03:54:19,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 160 transitions. [2022-11-03 03:54:19,561 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 160 transitions. Word has length 51 [2022-11-03 03:54:19,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:19,561 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 160 transitions. [2022-11-03 03:54:19,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:54:19,562 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 160 transitions. [2022-11-03 03:54:19,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-03 03:54:19,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:19,563 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:19,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:19,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-03 03:54:19,778 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:54:19,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:19,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1280577363, now seen corresponding path program 1 times [2022-11-03 03:54:19,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:19,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859564303] [2022-11-03 03:54:19,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:19,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:19,914 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:54:19,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:19,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859564303] [2022-11-03 03:54:19,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859564303] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:54:19,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393294917] [2022-11-03 03:54:19,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:19,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:19,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:19,916 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:19,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-03 03:54:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:19,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:54:19,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:54:20,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:54:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:54:20,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393294917] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:54:20,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1429366589] [2022-11-03 03:54:20,227 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 03:54:20,227 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:54:20,227 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:54:20,228 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:54:20,228 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:54:20,500 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:54:20,638 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:54:23,049 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7715#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520) 0) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:54:23,049 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:54:23,049 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:54:23,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-03 03:54:23,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618125671] [2022-11-03 03:54:23,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:54:23,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 03:54:23,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:23,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 03:54:23,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:54:23,052 INFO L87 Difference]: Start difference. First operand 138 states and 160 transitions. Second operand has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:54:23,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:23,364 INFO L93 Difference]: Finished difference Result 360 states and 421 transitions. [2022-11-03 03:54:23,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:54:23,365 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 51 [2022-11-03 03:54:23,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:23,367 INFO L225 Difference]: With dead ends: 360 [2022-11-03 03:54:23,367 INFO L226 Difference]: Without dead ends: 268 [2022-11-03 03:54:23,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=240, Invalid=816, Unknown=0, NotChecked=0, Total=1056 [2022-11-03 03:54:23,369 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 159 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:23,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 245 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:54:23,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-03 03:54:23,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 140. [2022-11-03 03:54:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 117 states have (on average 1.2136752136752136) internal successors, (142), 128 states have internal predecessors, (142), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-03 03:54:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 159 transitions. [2022-11-03 03:54:23,398 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 159 transitions. Word has length 51 [2022-11-03 03:54:23,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:23,399 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 159 transitions. [2022-11-03 03:54:23,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.642857142857143) internal successors, (79), 14 states have internal predecessors, (79), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:54:23,399 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 159 transitions. [2022-11-03 03:54:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 03:54:23,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:23,400 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:23,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-03 03:54:23,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-03 03:54:23,626 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:54:23,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:23,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1368167024, now seen corresponding path program 2 times [2022-11-03 03:54:23,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:23,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648027535] [2022-11-03 03:54:23,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:23,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:54:24,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:24,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648027535] [2022-11-03 03:54:24,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648027535] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:54:24,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631176103] [2022-11-03 03:54:24,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:54:24,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:24,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:24,020 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:24,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-03 03:54:24,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-03 03:54:24,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:54:24,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:54:24,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-03 03:54:24,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:24,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631176103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:24,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:54:24,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2022-11-03 03:54:24,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359017124] [2022-11-03 03:54:24,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:24,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:54:24,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:54:24,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:54:24,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:54:24,222 INFO L87 Difference]: Start difference. First operand 140 states and 159 transitions. Second operand has 6 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:54:24,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:24,309 INFO L93 Difference]: Finished difference Result 174 states and 195 transitions. [2022-11-03 03:54:24,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 03:54:24,309 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 70 [2022-11-03 03:54:24,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:24,311 INFO L225 Difference]: With dead ends: 174 [2022-11-03 03:54:24,311 INFO L226 Difference]: Without dead ends: 173 [2022-11-03 03:54:24,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:54:24,312 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 27 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:24,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 287 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:54:24,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-03 03:54:24,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 146. [2022-11-03 03:54:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 122 states have (on average 1.2049180327868851) internal successors, (147), 133 states have internal predecessors, (147), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-03 03:54:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 166 transitions. [2022-11-03 03:54:24,337 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 166 transitions. Word has length 70 [2022-11-03 03:54:24,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:24,337 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 166 transitions. [2022-11-03 03:54:24,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-03 03:54:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 166 transitions. [2022-11-03 03:54:24,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 03:54:24,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:24,339 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:54:24,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:24,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:24,544 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:54:24,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:24,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1015327533, now seen corresponding path program 2 times [2022-11-03 03:54:24,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:54:24,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267822964] [2022-11-03 03:54:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:24,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:54:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 95 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:54:24,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:54:24,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267822964] [2022-11-03 03:54:24,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267822964] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:54:24,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948620121] [2022-11-03 03:54:24,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:54:24,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:54:24,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:54:24,801 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:54:24,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 03:54:24,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 03:54:24,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:54:24,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 03:54:24,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:24,993 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-03 03:54:24,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:55:27,053 WARN L234 SmtUtils]: Spent 29.78s on a formula simplification. DAG size of input: 68 DAG size of output: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:56:00,412 WARN L234 SmtUtils]: Spent 13.85s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:56:13,367 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse6 (mod |c_base2flt_#res| 4294967296))) (and (let ((.cse7 (- |c_base2flt_#res|))) (let ((.cse1 (div |c_base2flt_#res| 16777216)) (.cse8 (div (+ 16777215 .cse7) 16777216))) (let ((.cse0 (* 72057594037927936 (div (+ (- 1) .cse7) 16777216))) (.cse4 (* 72057594021150720 .cse8)) (.cse5 (* (- 8589934590) .cse8)) (.cse2 (div (* .cse1 4294967297) 4294967296)) (.cse3 (div (+ 36028799166447615 .cse7) 72057594037927936))) (or (< (+ .cse0 72057594037927935 (* .cse1 72057594037927936) (* .cse2 72057594021150720) (* 72057594021150720 .cse3) .cse4) (+ (* (div (+ .cse5 2147483647 (* .cse1 (- 8589934591))) 4294967296) 72057594037927936) |c_base2flt_#res|)) (< .cse6 1) (< (+ .cse0 72057594037927935 (* .cse1 216172782097006592) .cse4) (+ (* (div (+ .cse5 2147483647 (* .cse2 (- 4294967295)) (* .cse3 (- 4294967295))) 4294967296) 72057594037927936) |c_base2flt_#res|)))))) (or (< |c_base2flt_#res| (+ (* (div |c_base2flt_#res| 4294967296) 4294967296) 1)) (< (* 18446744069414584320 (div (+ (- .cse6) 36028799166447614) 4294967296)) (+ 154742486463928460652838914 .cse6))))) is different from true [2022-11-03 03:56:33,547 WARN L234 SmtUtils]: Spent 11.75s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:56:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 4 proven. 1 refuted. 1 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-03 03:56:33,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948620121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:33,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [436481359] [2022-11-03 03:56:33,566 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 03:56:33,566 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:56:33,566 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:56:33,567 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:56:33,567 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:56:33,843 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:56:33,976 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:56:42,566 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9417#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520) 0) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:56:42,566 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:56:42,566 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:56:42,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 7] total 21 [2022-11-03 03:56:42,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220880576] [2022-11-03 03:56:42,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:56:42,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 03:56:42,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:56:42,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 03:56:42,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1071, Unknown=1, NotChecked=68, Total=1332 [2022-11-03 03:56:42,569 INFO L87 Difference]: Start difference. First operand 146 states and 166 transitions. Second operand has 21 states, 19 states have (on average 4.105263157894737) internal successors, (78), 19 states have internal predecessors, (78), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 03:56:44,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 03:56:54,505 WARN L234 SmtUtils]: Spent 9.57s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:57:51,760 WARN L234 SmtUtils]: Spent 41.18s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:57:52,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:57:55,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:09,447 WARN L234 SmtUtils]: Spent 13.96s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:58:11,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:13,541 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse7 (mod |c_base2flt_#res| 4294967296)) (.cse0 (mod c_base2flt_~__retres4~0 4294967296))) (and (or (< c_base2flt_~__retres4~0 (+ (* (div c_base2flt_~__retres4~0 4294967296) 4294967296) 1)) (< (* (div (+ (- .cse0) 36028799166447614) 4294967296) 18446744069414584320) (+ 154742486463928460652838914 .cse0))) (not (= |c_base2flt_#in~e| 0)) (let ((.cse8 (- |c_base2flt_#res|))) (let ((.cse2 (div |c_base2flt_#res| 16777216)) (.cse9 (div (+ 16777215 .cse8) 16777216))) (let ((.cse1 (* 72057594037927936 (div (+ (- 1) .cse8) 16777216))) (.cse5 (* 72057594021150720 .cse9)) (.cse6 (* (- 8589934590) .cse9)) (.cse3 (div (* .cse2 4294967297) 4294967296)) (.cse4 (div (+ 36028799166447615 .cse8) 72057594037927936))) (or (< (+ .cse1 72057594037927935 (* .cse2 72057594037927936) (* .cse3 72057594021150720) (* 72057594021150720 .cse4) .cse5) (+ (* (div (+ .cse6 2147483647 (* .cse2 (- 8589934591))) 4294967296) 72057594037927936) |c_base2flt_#res|)) (< .cse7 1) (< (+ .cse1 72057594037927935 (* .cse2 216172782097006592) .cse5) (+ (* (div (+ .cse6 2147483647 (* .cse3 (- 4294967295)) (* .cse4 (- 4294967295))) 4294967296) 72057594037927936) |c_base2flt_#res|)))))) (or (< |c_base2flt_#res| (+ (* (div |c_base2flt_#res| 4294967296) 4294967296) 1)) (< (* 18446744069414584320 (div (+ (- .cse7) 36028799166447614) 4294967296)) (+ 154742486463928460652838914 .cse7))) (let ((.cse17 (- c_base2flt_~__retres4~0))) (let ((.cse12 (div c_base2flt_~__retres4~0 16777216)) (.cse16 (div (+ 16777215 .cse17) 16777216))) (let ((.cse10 (* (div (+ (- 1) .cse17) 16777216) 72057594037927936)) (.cse11 (* 72057594021150720 .cse16)) (.cse14 (div (+ 36028799166447615 .cse17) 72057594037927936)) (.cse15 (div (* 4294967297 .cse12) 4294967296)) (.cse13 (* (- 8589934590) .cse16))) (or (< (+ .cse10 .cse11 72057594037927935 (* 216172782097006592 .cse12)) (+ (* 72057594037927936 (div (+ .cse13 2147483647 (* .cse14 (- 4294967295)) (* .cse15 (- 4294967295))) 4294967296)) c_base2flt_~__retres4~0)) (< (+ .cse10 .cse11 72057594037927935 (* 72057594037927936 .cse12) (* .cse14 72057594021150720) (* .cse15 72057594021150720)) (+ c_base2flt_~__retres4~0 (* (div (+ .cse13 2147483647 (* (- 8589934591) .cse12)) 4294967296) 72057594037927936))) (< .cse0 1))))))) is different from false [2022-11-03 03:58:15,565 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse7 (mod |c_base2flt_#res| 4294967296)) (.cse0 (mod c_base2flt_~__retres4~0 4294967296))) (and (or (< c_base2flt_~__retres4~0 (+ (* (div c_base2flt_~__retres4~0 4294967296) 4294967296) 1)) (< (* (div (+ (- .cse0) 36028799166447614) 4294967296) 18446744069414584320) (+ 154742486463928460652838914 .cse0))) (not (= |c_base2flt_#in~e| 0)) (let ((.cse8 (- |c_base2flt_#res|))) (let ((.cse2 (div |c_base2flt_#res| 16777216)) (.cse9 (div (+ 16777215 .cse8) 16777216))) (let ((.cse1 (* 72057594037927936 (div (+ (- 1) .cse8) 16777216))) (.cse5 (* 72057594021150720 .cse9)) (.cse6 (* (- 8589934590) .cse9)) (.cse3 (div (* .cse2 4294967297) 4294967296)) (.cse4 (div (+ 36028799166447615 .cse8) 72057594037927936))) (or (< (+ .cse1 72057594037927935 (* .cse2 72057594037927936) (* .cse3 72057594021150720) (* 72057594021150720 .cse4) .cse5) (+ (* (div (+ .cse6 2147483647 (* .cse2 (- 8589934591))) 4294967296) 72057594037927936) |c_base2flt_#res|)) (< .cse7 1) (< (+ .cse1 72057594037927935 (* .cse2 216172782097006592) .cse5) (+ (* (div (+ .cse6 2147483647 (* .cse3 (- 4294967295)) (* .cse4 (- 4294967295))) 4294967296) 72057594037927936) |c_base2flt_#res|)))))) (or (< |c_base2flt_#res| (+ (* (div |c_base2flt_#res| 4294967296) 4294967296) 1)) (< (* 18446744069414584320 (div (+ (- .cse7) 36028799166447614) 4294967296)) (+ 154742486463928460652838914 .cse7))) (let ((.cse17 (- c_base2flt_~__retres4~0))) (let ((.cse12 (div c_base2flt_~__retres4~0 16777216)) (.cse16 (div (+ 16777215 .cse17) 16777216))) (let ((.cse10 (* (div (+ (- 1) .cse17) 16777216) 72057594037927936)) (.cse11 (* 72057594021150720 .cse16)) (.cse14 (div (+ 36028799166447615 .cse17) 72057594037927936)) (.cse15 (div (* 4294967297 .cse12) 4294967296)) (.cse13 (* (- 8589934590) .cse16))) (or (< (+ .cse10 .cse11 72057594037927935 (* 216172782097006592 .cse12)) (+ (* 72057594037927936 (div (+ .cse13 2147483647 (* .cse14 (- 4294967295)) (* .cse15 (- 4294967295))) 4294967296)) c_base2flt_~__retres4~0)) (< (+ .cse10 .cse11 72057594037927935 (* 72057594037927936 .cse12) (* .cse14 72057594021150720) (* .cse15 72057594021150720)) (+ c_base2flt_~__retres4~0 (* (div (+ .cse13 2147483647 (* (- 8589934591) .cse12)) 4294967296) 72057594037927936))) (< .cse0 1))))))) is different from true [2022-11-03 03:58:17,674 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse7 (mod |c_base2flt_#res| 4294967296)) (.cse0 (mod c_base2flt_~__retres4~0 4294967296))) (and (or (< c_base2flt_~__retres4~0 (+ (* (div c_base2flt_~__retres4~0 4294967296) 4294967296) 1)) (< (* (div (+ (- .cse0) 36028799166447614) 4294967296) 18446744069414584320) (+ 154742486463928460652838914 .cse0))) (let ((.cse8 (- |c_base2flt_#res|))) (let ((.cse2 (div |c_base2flt_#res| 16777216)) (.cse9 (div (+ 16777215 .cse8) 16777216))) (let ((.cse1 (* 72057594037927936 (div (+ (- 1) .cse8) 16777216))) (.cse5 (* 72057594021150720 .cse9)) (.cse6 (* (- 8589934590) .cse9)) (.cse3 (div (* .cse2 4294967297) 4294967296)) (.cse4 (div (+ 36028799166447615 .cse8) 72057594037927936))) (or (< (+ .cse1 72057594037927935 (* .cse2 72057594037927936) (* .cse3 72057594021150720) (* 72057594021150720 .cse4) .cse5) (+ (* (div (+ .cse6 2147483647 (* .cse2 (- 8589934591))) 4294967296) 72057594037927936) |c_base2flt_#res|)) (< .cse7 1) (< (+ .cse1 72057594037927935 (* .cse2 216172782097006592) .cse5) (+ (* (div (+ .cse6 2147483647 (* .cse3 (- 4294967295)) (* .cse4 (- 4294967295))) 4294967296) 72057594037927936) |c_base2flt_#res|)))))) (or (< |c_base2flt_#res| (+ (* (div |c_base2flt_#res| 4294967296) 4294967296) 1)) (< (* 18446744069414584320 (div (+ (- .cse7) 36028799166447614) 4294967296)) (+ 154742486463928460652838914 .cse7))) (let ((.cse17 (- c_base2flt_~__retres4~0))) (let ((.cse12 (div c_base2flt_~__retres4~0 16777216)) (.cse16 (div (+ 16777215 .cse17) 16777216))) (let ((.cse10 (* (div (+ (- 1) .cse17) 16777216) 72057594037927936)) (.cse11 (* 72057594021150720 .cse16)) (.cse14 (div (+ 36028799166447615 .cse17) 72057594037927936)) (.cse15 (div (* 4294967297 .cse12) 4294967296)) (.cse13 (* (- 8589934590) .cse16))) (or (< (+ .cse10 .cse11 72057594037927935 (* 216172782097006592 .cse12)) (+ (* 72057594037927936 (div (+ .cse13 2147483647 (* .cse14 (- 4294967295)) (* .cse15 (- 4294967295))) 4294967296)) c_base2flt_~__retres4~0)) (< (+ .cse10 .cse11 72057594037927935 (* 72057594037927936 .cse12) (* .cse14 72057594021150720) (* .cse15 72057594021150720)) (+ c_base2flt_~__retres4~0 (* (div (+ .cse13 2147483647 (* (- 8589934591) .cse12)) 4294967296) 72057594037927936))) (< .cse0 1))))))) is different from true [2022-11-03 03:58:20,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:23,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:25,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 03:58:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:58:25,608 INFO L93 Difference]: Finished difference Result 433 states and 508 transitions. [2022-11-03 03:58:25,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 03:58:25,609 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 4.105263157894737) internal successors, (78), 19 states have internal predecessors, (78), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 71 [2022-11-03 03:58:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:58:25,611 INFO L225 Difference]: With dead ends: 433 [2022-11-03 03:58:25,612 INFO L226 Difference]: Without dead ends: 337 [2022-11-03 03:58:25,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 153.8s TimeCoverageRelationStatistics Valid=290, Invalid=1606, Unknown=8, NotChecked=258, Total=2162 [2022-11-03 03:58:25,614 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 301 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 22 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:58:25,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 456 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 311 Invalid, 5 Unknown, 85 Unchecked, 16.1s Time] [2022-11-03 03:58:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-03 03:58:25,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 155. [2022-11-03 03:58:25,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 129 states have (on average 1.2015503875968991) internal successors, (155), 141 states have internal predecessors, (155), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 9 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 03:58:25,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 180 transitions. [2022-11-03 03:58:25,656 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 180 transitions. Word has length 71 [2022-11-03 03:58:25,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:58:25,657 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 180 transitions. [2022-11-03 03:58:25,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 4.105263157894737) internal successors, (78), 19 states have internal predecessors, (78), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-03 03:58:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 180 transitions. [2022-11-03 03:58:25,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 03:58:25,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:58:25,659 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:58:25,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:58:25,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:58:25,866 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:58:25,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:58:25,867 INFO L85 PathProgramCache]: Analyzing trace with hash 548521714, now seen corresponding path program 1 times [2022-11-03 03:58:25,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:58:25,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402840718] [2022-11-03 03:58:25,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:25,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:58:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:58:26,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:58:26,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402840718] [2022-11-03 03:58:26,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402840718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:58:26,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355930808] [2022-11-03 03:58:26,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:58:26,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:58:26,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:58:26,235 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:58:26,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 03:58:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:58:26,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 03:58:26,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:58:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 75 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:58:26,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:58:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:58:27,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355930808] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:58:27,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2012047477] [2022-11-03 03:58:27,157 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-03 03:58:27,157 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:58:27,157 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:58:27,158 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:58:27,158 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:58:27,505 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:58:27,655 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:58:32,571 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10629#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520) 0) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:58:32,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:58:32,571 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:58:32,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-11-03 03:58:32,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820634290] [2022-11-03 03:58:32,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:58:32,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 03:58:32,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:58:32,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 03:58:32,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1329, Unknown=0, NotChecked=0, Total=1640 [2022-11-03 03:58:32,574 INFO L87 Difference]: Start difference. First operand 155 states and 180 transitions. Second operand has 25 states, 25 states have (on average 5.28) internal successors, (132), 25 states have internal predecessors, (132), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:58:42,110 WARN L234 SmtUtils]: Spent 9.17s on a formula simplification. DAG size of input: 41 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:59:00,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:00,437 INFO L93 Difference]: Finished difference Result 466 states and 551 transitions. [2022-11-03 03:59:00,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 03:59:00,439 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.28) internal successors, (132), 25 states have internal predecessors, (132), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-03 03:59:00,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:00,441 INFO L225 Difference]: With dead ends: 466 [2022-11-03 03:59:00,441 INFO L226 Difference]: Without dead ends: 366 [2022-11-03 03:59:00,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 191 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 975 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=644, Invalid=2212, Unknown=6, NotChecked=0, Total=2862 [2022-11-03 03:59:00,444 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 338 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:00,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 529 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 03:59:00,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-03 03:59:00,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 188. [2022-11-03 03:59:00,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 162 states have (on average 1.191358024691358) internal successors, (193), 174 states have internal predecessors, (193), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 9 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 03:59:00,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 218 transitions. [2022-11-03 03:59:00,489 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 218 transitions. Word has length 72 [2022-11-03 03:59:00,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:00,489 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 218 transitions. [2022-11-03 03:59:00,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.28) internal successors, (132), 25 states have internal predecessors, (132), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:59:00,490 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 218 transitions. [2022-11-03 03:59:00,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 03:59:00,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:00,492 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:00,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:59:00,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:00,706 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:59:00,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:00,707 INFO L85 PathProgramCache]: Analyzing trace with hash -552622049, now seen corresponding path program 1 times [2022-11-03 03:59:00,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:00,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404057863] [2022-11-03 03:59:00,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:00,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:59:01,026 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:01,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404057863] [2022-11-03 03:59:01,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404057863] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:01,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592988410] [2022-11-03 03:59:01,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:01,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:01,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:01,028 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:01,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-03 03:59:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:01,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 03:59:01,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:01,327 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 21 proven. 119 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 03:59:01,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:01,815 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:59:01,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592988410] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:59:01,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [355186551] [2022-11-03 03:59:01,818 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-03 03:59:01,818 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:59:01,819 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:59:01,819 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:59:01,819 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:59:02,246 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:59:02,380 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:59:06,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [355186551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:06,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:59:06,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [11, 11, 11] total 51 [2022-11-03 03:59:06,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228386129] [2022-11-03 03:59:06,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:06,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 03:59:06,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:06,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 03:59:06,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=2064, Unknown=0, NotChecked=0, Total=2550 [2022-11-03 03:59:06,760 INFO L87 Difference]: Start difference. First operand 188 states and 218 transitions. Second operand has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:59:08,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:08,214 INFO L93 Difference]: Finished difference Result 247 states and 288 transitions. [2022-11-03 03:59:08,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 03:59:08,216 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 77 [2022-11-03 03:59:08,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:08,218 INFO L225 Difference]: With dead ends: 247 [2022-11-03 03:59:08,218 INFO L226 Difference]: Without dead ends: 245 [2022-11-03 03:59:08,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 188 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=675, Invalid=2747, Unknown=0, NotChecked=0, Total=3422 [2022-11-03 03:59:08,220 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 141 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:08,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 304 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 469 Invalid, 0 Unknown, 91 Unchecked, 0.9s Time] [2022-11-03 03:59:08,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-03 03:59:08,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 190. [2022-11-03 03:59:08,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 164 states have (on average 1.1890243902439024) internal successors, (195), 176 states have internal predecessors, (195), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 9 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 03:59:08,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 220 transitions. [2022-11-03 03:59:08,259 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 220 transitions. Word has length 77 [2022-11-03 03:59:08,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:08,259 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 220 transitions. [2022-11-03 03:59:08,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-03 03:59:08,259 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 220 transitions. [2022-11-03 03:59:08,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 03:59:08,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:08,262 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:08,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-03 03:59:08,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-03 03:59:08,467 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:59:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1751266573, now seen corresponding path program 1 times [2022-11-03 03:59:08,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:08,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312553982] [2022-11-03 03:59:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:08,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:59:08,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:08,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312553982] [2022-11-03 03:59:08,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312553982] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:08,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388111547] [2022-11-03 03:59:08,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:08,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:08,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:08,831 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:08,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-03 03:59:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:08,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 03:59:08,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 21 proven. 119 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:59:09,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:09,643 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:59:09,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388111547] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:59:09,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1502214321] [2022-11-03 03:59:09,645 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-03 03:59:09,646 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:59:09,646 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:59:09,646 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:59:09,647 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:59:09,983 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:59:10,138 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:59:14,571 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '13040#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520) 0) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:59:14,571 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:59:14,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:59:14,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-03 03:59:14,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867422662] [2022-11-03 03:59:14,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:59:14,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 03:59:14,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:14,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 03:59:14,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=1557, Unknown=0, NotChecked=0, Total=2070 [2022-11-03 03:59:14,579 INFO L87 Difference]: Start difference. First operand 190 states and 220 transitions. Second operand has 29 states, 29 states have (on average 5.379310344827586) internal successors, (156), 29 states have internal predecessors, (156), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:59:15,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:15,272 INFO L93 Difference]: Finished difference Result 644 states and 778 transitions. [2022-11-03 03:59:15,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 03:59:15,273 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.379310344827586) internal successors, (156), 29 states have internal predecessors, (156), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2022-11-03 03:59:15,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:15,277 INFO L225 Difference]: With dead ends: 644 [2022-11-03 03:59:15,277 INFO L226 Difference]: Without dead ends: 540 [2022-11-03 03:59:15,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 198 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1350 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=594, Invalid=1758, Unknown=0, NotChecked=0, Total=2352 [2022-11-03 03:59:15,280 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 499 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:15,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 310 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:59:15,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-11-03 03:59:15,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 202. [2022-11-03 03:59:15,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 176 states have (on average 1.1534090909090908) internal successors, (203), 188 states have internal predecessors, (203), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 9 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 03:59:15,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 228 transitions. [2022-11-03 03:59:15,348 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 228 transitions. Word has length 78 [2022-11-03 03:59:15,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:15,349 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 228 transitions. [2022-11-03 03:59:15,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.379310344827586) internal successors, (156), 29 states have internal predecessors, (156), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 03:59:15,349 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 228 transitions. [2022-11-03 03:59:15,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-03 03:59:15,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:15,351 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:15,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-03 03:59:15,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-03 03:59:15,566 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:59:15,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:15,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1085922290, now seen corresponding path program 2 times [2022-11-03 03:59:15,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:15,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224102634] [2022-11-03 03:59:15,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:15,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:15,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 3 proven. 463 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:59:16,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:16,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224102634] [2022-11-03 03:59:16,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224102634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:16,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959486628] [2022-11-03 03:59:16,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 03:59:16,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:16,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:16,398 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:16,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 03:59:16,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 03:59:16,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:59:16,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 03:59:16,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:16,729 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2022-11-03 03:59:16,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:59:16,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959486628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:16,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:59:16,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [18] total 24 [2022-11-03 03:59:16,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786782705] [2022-11-03 03:59:16,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:16,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:59:16,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:16,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:59:16,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2022-11-03 03:59:16,732 INFO L87 Difference]: Start difference. First operand 202 states and 228 transitions. Second operand has 8 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:59:16,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:16,898 INFO L93 Difference]: Finished difference Result 260 states and 286 transitions. [2022-11-03 03:59:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:59:16,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2022-11-03 03:59:16,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:16,901 INFO L225 Difference]: With dead ends: 260 [2022-11-03 03:59:16,901 INFO L226 Difference]: Without dead ends: 259 [2022-11-03 03:59:16,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:59:16,902 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 80 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:16,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 366 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:59:16,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-03 03:59:16,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 208. [2022-11-03 03:59:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 182 states have (on average 1.1483516483516483) internal successors, (209), 193 states have internal predecessors, (209), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 03:59:16,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 234 transitions. [2022-11-03 03:59:16,954 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 234 transitions. Word has length 112 [2022-11-03 03:59:16,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:16,954 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 234 transitions. [2022-11-03 03:59:16,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:59:16,955 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 234 transitions. [2022-11-03 03:59:16,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 03:59:16,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:16,957 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:16,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-03 03:59:17,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-03 03:59:17,171 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:59:17,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash -696147242, now seen corresponding path program 1 times [2022-11-03 03:59:17,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:17,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845853401] [2022-11-03 03:59:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:17,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:17,979 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 3 proven. 463 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:59:17,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:17,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845853401] [2022-11-03 03:59:17,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845853401] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:17,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200832983] [2022-11-03 03:59:17,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:17,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:17,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:17,983 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:18,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-03 03:59:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:18,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 03:59:18,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2022-11-03 03:59:18,491 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:59:18,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200832983] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:18,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:59:18,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 26 [2022-11-03 03:59:18,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98975242] [2022-11-03 03:59:18,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:18,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:59:18,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:18,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:59:18,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:59:18,494 INFO L87 Difference]: Start difference. First operand 208 states and 234 transitions. Second operand has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:59:18,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:18,846 INFO L93 Difference]: Finished difference Result 263 states and 289 transitions. [2022-11-03 03:59:18,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:59:18,847 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 113 [2022-11-03 03:59:18,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:18,849 INFO L225 Difference]: With dead ends: 263 [2022-11-03 03:59:18,850 INFO L226 Difference]: Without dead ends: 260 [2022-11-03 03:59:18,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:59:18,853 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 90 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:18,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 424 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:59:18,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-03 03:59:18,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 219. [2022-11-03 03:59:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 193 states have (on average 1.160621761658031) internal successors, (224), 204 states have internal predecessors, (224), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-03 03:59:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 249 transitions. [2022-11-03 03:59:18,915 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 249 transitions. Word has length 113 [2022-11-03 03:59:18,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:18,915 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 249 transitions. [2022-11-03 03:59:18,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:59:18,916 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 249 transitions. [2022-11-03 03:59:18,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-03 03:59:18,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:18,919 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:18,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-03 03:59:19,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-03 03:59:19,135 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:59:19,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:19,135 INFO L85 PathProgramCache]: Analyzing trace with hash -105727884, now seen corresponding path program 1 times [2022-11-03 03:59:19,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:19,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334770208] [2022-11-03 03:59:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:19,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 3 proven. 463 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:59:19,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:19,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334770208] [2022-11-03 03:59:19,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334770208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:19,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697624766] [2022-11-03 03:59:19,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:19,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:19,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:19,892 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:19,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-03 03:59:20,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:20,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 03:59:20,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 477 trivial. 0 not checked. [2022-11-03 03:59:20,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:59:20,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697624766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:20,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:59:20,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [18] total 26 [2022-11-03 03:59:20,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930437528] [2022-11-03 03:59:20,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:20,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 03:59:20,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:20,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 03:59:20,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:59:20,392 INFO L87 Difference]: Start difference. First operand 219 states and 249 transitions. Second operand has 10 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:59:20,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:20,682 INFO L93 Difference]: Finished difference Result 259 states and 285 transitions. [2022-11-03 03:59:20,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:59:20,682 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 114 [2022-11-03 03:59:20,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:20,684 INFO L225 Difference]: With dead ends: 259 [2022-11-03 03:59:20,684 INFO L226 Difference]: Without dead ends: 258 [2022-11-03 03:59:20,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2022-11-03 03:59:20,686 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 75 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:20,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 463 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:59:20,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-03 03:59:20,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 195. [2022-11-03 03:59:20,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 174 states have (on average 1.1494252873563218) internal successors, (200), 183 states have internal predecessors, (200), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-03 03:59:20,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 213 transitions. [2022-11-03 03:59:20,731 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 213 transitions. Word has length 114 [2022-11-03 03:59:20,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:20,732 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 213 transitions. [2022-11-03 03:59:20,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 03:59:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 213 transitions. [2022-11-03 03:59:20,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-03 03:59:20,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:20,734 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:20,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-03 03:59:20,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-03 03:59:20,950 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 03:59:20,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:20,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1905580260, now seen corresponding path program 1 times [2022-11-03 03:59:20,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:20,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690939896] [2022-11-03 03:59:20,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:20,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 3 proven. 466 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:59:21,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:21,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690939896] [2022-11-03 03:59:21,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690939896] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:59:21,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46102647] [2022-11-03 03:59:21,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:21,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:59:21,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:21,837 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:59:21,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-03 03:59:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:22,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 03:59:22,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:59:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 24 proven. 455 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 03:59:22,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:59:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 3 proven. 466 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 03:59:24,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46102647] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:59:24,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2023288132] [2022-11-03 03:59:24,288 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-03 03:59:24,288 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:59:24,289 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:59:24,289 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:59:24,289 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:59:24,659 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 03:59:24,867 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 03:59:33,856 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17633#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520) 0) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 03:59:33,856 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 03:59:33,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 03:59:33,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2022-11-03 03:59:33,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912272241] [2022-11-03 03:59:33,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 03:59:33,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-03 03:59:33,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:33,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-03 03:59:33,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=791, Invalid=3498, Unknown=1, NotChecked=0, Total=4290 [2022-11-03 03:59:33,859 INFO L87 Difference]: Start difference. First operand 195 states and 213 transitions. Second operand has 49 states, 49 states have (on average 5.3061224489795915) internal successors, (260), 49 states have internal predecessors, (260), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 03:59:50,542 WARN L234 SmtUtils]: Spent 14.42s on a formula simplification. DAG size of input: 51 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:00:14,876 WARN L234 SmtUtils]: Spent 11.72s on a formula simplification. DAG size of input: 41 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:00:48,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:48,409 INFO L93 Difference]: Finished difference Result 648 states and 747 transitions. [2022-11-03 04:00:48,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-03 04:00:48,412 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.3061224489795915) internal successors, (260), 49 states have internal predecessors, (260), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 114 [2022-11-03 04:00:48,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:48,415 INFO L225 Difference]: With dead ends: 648 [2022-11-03 04:00:48,415 INFO L226 Difference]: Without dead ends: 541 [2022-11-03 04:00:48,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 301 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2322 ImplicationChecksByTransitivity, 82.3s TimeCoverageRelationStatistics Valid=1774, Invalid=6045, Unknown=13, NotChecked=0, Total=7832 [2022-11-03 04:00:48,419 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 553 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:48,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 1554 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-03 04:00:48,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-11-03 04:00:48,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 233. [2022-11-03 04:00:48,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 212 states have (on average 1.1462264150943395) internal successors, (243), 221 states have internal predecessors, (243), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-03 04:00:48,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 256 transitions. [2022-11-03 04:00:48,476 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 256 transitions. Word has length 114 [2022-11-03 04:00:48,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:48,477 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 256 transitions. [2022-11-03 04:00:48,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.3061224489795915) internal successors, (260), 49 states have internal predecessors, (260), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-03 04:00:48,477 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 256 transitions. [2022-11-03 04:00:48,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-03 04:00:48,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:48,479 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:48,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:48,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-03 04:00:48,695 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 04:00:48,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:48,695 INFO L85 PathProgramCache]: Analyzing trace with hash 275419733, now seen corresponding path program 2 times [2022-11-03 04:00:48,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:48,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221027950] [2022-11-03 04:00:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:48,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:49,426 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 3 proven. 640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 04:00:49,426 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 04:00:49,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221027950] [2022-11-03 04:00:49,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221027950] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:00:49,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929656087] [2022-11-03 04:00:49,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 04:00:49,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:00:49,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:49,429 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:00:49,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-03 04:00:49,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2022-11-03 04:00:49,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:00:49,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 04:00:49,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:50,458 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 21 proven. 632 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 04:00:50,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:00:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 3 proven. 640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 04:00:51,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929656087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:00:51,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1639934215] [2022-11-03 04:00:51,794 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2022-11-03 04:00:51,794 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 04:00:51,794 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 04:00:51,795 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 04:00:51,795 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 04:00:52,116 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-03 04:00:52,264 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 04:00:57,256 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19578#(and (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (< (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520) 0) (= (select (select |#memory_int| 1) 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 04:00:57,256 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 04:00:57,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:00:57,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 56 [2022-11-03 04:00:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507719149] [2022-11-03 04:00:57,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:00:57,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-03 04:00:57,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 04:00:57,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-03 04:00:57,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1449, Invalid=3807, Unknown=0, NotChecked=0, Total=5256 [2022-11-03 04:00:57,262 INFO L87 Difference]: Start difference. First operand 233 states and 256 transitions. Second operand has 56 states, 56 states have (on average 5.196428571428571) internal successors, (291), 56 states have internal predecessors, (291), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 04:00:58,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:58,888 INFO L93 Difference]: Finished difference Result 1134 states and 1297 transitions. [2022-11-03 04:00:58,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-03 04:00:58,889 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.196428571428571) internal successors, (291), 56 states have internal predecessors, (291), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 123 [2022-11-03 04:00:58,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:58,894 INFO L225 Difference]: With dead ends: 1134 [2022-11-03 04:00:58,894 INFO L226 Difference]: Without dead ends: 1033 [2022-11-03 04:00:58,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 315 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3285 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1602, Invalid=4098, Unknown=0, NotChecked=0, Total=5700 [2022-11-03 04:00:58,900 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 788 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:58,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 573 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 04:00:58,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2022-11-03 04:00:58,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 285. [2022-11-03 04:00:58,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 264 states have (on average 1.128787878787879) internal successors, (298), 273 states have internal predecessors, (298), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-03 04:00:58,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 311 transitions. [2022-11-03 04:00:58,996 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 311 transitions. Word has length 123 [2022-11-03 04:00:58,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:58,997 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 311 transitions. [2022-11-03 04:00:58,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.196428571428571) internal successors, (291), 56 states have internal predecessors, (291), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-03 04:00:58,998 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 311 transitions. [2022-11-03 04:00:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-03 04:00:59,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:59,000 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:59,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:59,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-03 04:00:59,213 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-11-03 04:00:59,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:59,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1549633884, now seen corresponding path program 2 times [2022-11-03 04:00:59,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:00:59,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792033998] [2022-11-03 04:00:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:59,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:00:59,392 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:00:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:00:59,588 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:00:59,588 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:00:59,590 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 18 remaining) [2022-11-03 04:00:59,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-11-03 04:00:59,592 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-03 04:00:59,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-03 04:00:59,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-03 04:00:59,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-03 04:00:59,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-03 04:00:59,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-03 04:00:59,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-03 04:00:59,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-03 04:00:59,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-03 04:00:59,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-03 04:00:59,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-03 04:00:59,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-03 04:00:59,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-03 04:00:59,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-03 04:00:59,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-03 04:00:59,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-03 04:00:59,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-03 04:00:59,602 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:00:59,608 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:00:59,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:00:59 BoogieIcfgContainer [2022-11-03 04:00:59,751 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:00:59,752 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:00:59,752 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:00:59,752 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:00:59,753 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:53:56" (3/4) ... [2022-11-03 04:00:59,757 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 04:00:59,757 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:00:59,759 INFO L158 Benchmark]: Toolchain (without parser) took 424663.76ms. Allocated memory was 113.2MB in the beginning and 257.9MB in the end (delta: 144.7MB). Free memory was 73.0MB in the beginning and 190.3MB in the end (delta: -117.3MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-11-03 04:00:59,763 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 113.2MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:00:59,764 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.14ms. Allocated memory is still 113.2MB. Free memory was 72.9MB in the beginning and 85.9MB in the end (delta: -13.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 04:00:59,764 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.15ms. Allocated memory is still 113.2MB. Free memory was 85.9MB in the beginning and 83.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:00:59,766 INFO L158 Benchmark]: Boogie Preprocessor took 62.46ms. Allocated memory is still 113.2MB. Free memory was 83.8MB in the beginning and 82.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 04:00:59,771 INFO L158 Benchmark]: RCFGBuilder took 864.95ms. Allocated memory is still 113.2MB. Free memory was 82.3MB in the beginning and 59.0MB in the end (delta: 23.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-03 04:00:59,772 INFO L158 Benchmark]: TraceAbstraction took 423241.23ms. Allocated memory was 113.2MB in the beginning and 257.9MB in the end (delta: 144.7MB). Free memory was 58.5MB in the beginning and 190.3MB in the end (delta: -131.9MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2022-11-03 04:00:59,772 INFO L158 Benchmark]: Witness Printer took 5.20ms. Allocated memory is still 257.9MB. Free memory is still 190.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:00:59,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 113.2MB. Free memory is still 89.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.14ms. Allocated memory is still 113.2MB. Free memory was 72.9MB in the beginning and 85.9MB in the end (delta: -13.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 86.15ms. Allocated memory is still 113.2MB. Free memory was 85.9MB in the beginning and 83.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.46ms. Allocated memory is still 113.2MB. Free memory was 83.8MB in the beginning and 82.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 864.95ms. Allocated memory is still 113.2MB. Free memory was 82.3MB in the beginning and 59.0MB in the end (delta: 23.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 423241.23ms. Allocated memory was 113.2MB in the beginning and 257.9MB in the end (delta: 144.7MB). Free memory was 58.5MB in the beginning and 190.3MB in the end (delta: -131.9MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * Witness Printer took 5.20ms. Allocated memory is still 257.9MB. Free memory is still 190.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 175]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseComplement at line 76, overapproximation of bitwiseOr at line 173, overapproximation of bitwiseAnd at line 174. Possible FailurePath: [L221] unsigned int a ; [L222] unsigned int ma = __VERIFIER_nondet_uint(); [L223] signed char ea = __VERIFIER_nondet_char(); [L224] unsigned int b ; [L225] unsigned int mb = __VERIFIER_nondet_uint(); [L226] signed char eb = __VERIFIER_nondet_char(); [L227] unsigned int r_mul ; [L228] unsigned int zero ; [L229] unsigned int one ; [L230] int sb ; [L231] int tmp ; [L232] int tmp___0 ; [L233] int tmp___1 ; [L234] int __retres16 ; VAL [ea=127, eb=-128] [L238] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L80] return (__retres4); [L238] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=-128] [L238] zero = base2flt(0, 0) [L239] CALL, EXPR base2flt(1, 0) VAL [\old(e)=0, \old(m)=1] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L35] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L47] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=1, e=-24, m=0] [L77] EXPR e + 128 [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=0, \old(m)=1, __retres4=1744830464, e=-24, m=0, res=1744830464] [L80] return (__retres4); [L239] RET, EXPR base2flt(1, 0) VAL [base2flt(1, 0)=1744830464, ea=127, eb=-128, zero=0] [L239] one = base2flt(1, 0) [L240] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=33554432] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L29] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L57] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L59] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L64] COND TRUE e >= 127 [L65] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, e=127, m=33554432] [L80] return (__retres4); [L240] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=4294967295, ea=127, eb=-128, ma=33554432, one=1744830464, zero=0] [L240] a = base2flt(ma, ea) [L241] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=-128, \old(m)=33554430] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=-128, \old(m)=33554430, e=-128, m=33554430] [L29] COND FALSE !(! m) VAL [\old(e)=-128, \old(m)=33554430, e=-128, m=33554430] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=-128, \old(m)=33554430, e=-128, m=33554430] [L57] COND TRUE 1 VAL [\old(e)=-128, \old(m)=33554430, e=-128, m=33554430] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=-128, \old(m)=33554430, e=-128, m=33554430] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=-128, \old(m)=33554430, e=-128, m=33554430] [L77] EXPR e + 128 [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=-128, \old(m)=33554430, __retres4=33554430, e=-128, m=33554430, res=33554430] [L80] return (__retres4); [L241] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, base2flt(mb, eb)=108086391090446334, ea=127, eb=-128, ma=33554432, mb=33554430, one=1744830464, zero=0] [L241] b = base2flt(mb, eb) [L242] CALL mulflt(a, b) [L148] unsigned int res ; [L149] unsigned int ma ; [L150] unsigned int mb ; [L151] unsigned long long accu ; [L152] int ea ; [L153] int eb ; [L154] unsigned int tmp ; [L155] unsigned int __retres10 ; [L158] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=33554430, a=4294967295, b=33554430, tmp=33554430] [L165] COND FALSE !(! b) [L171] ma = a & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=33554430, a=4294967295, b=33554430, ma=0, tmp=33554430] [L172] EXPR (int )(a >> 24U) - 128 [L172] ea = (int )(a >> 24U) - 128 [L173] ma = ma | (1U << 24U) [L174] mb = b & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=33554430, a=4294967295, b=33554430, ea=127, mb=1, tmp=33554430] [L175] (int )(b >> 24U) - 128 VAL [\old(a)=4294967295, \old(b)=33554430, a=4294967295, b=33554430, ea=127, mb=1, tmp=33554430] - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 175]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 177]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 177]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 178]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 178]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 201]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 201]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 214]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 71 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 423.0s, OverallIterations: 29, TraceHistogramMax: 24, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 215.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 4192 SdHoareTripleChecker+Valid, 25.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4115 mSDsluCounter, 9280 SdHoareTripleChecker+Invalid, 23.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 243 IncrementalHoareTripleChecker+Unchecked, 8145 mSDsCounter, 839 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5918 IncrementalHoareTripleChecker+Invalid, 7005 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 839 mSolverCounterUnsat, 1585 mSDtfsCounter, 5918 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3246 GetRequests, 2507 SyntacticMatches, 28 SemanticMatches, 711 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 13048 ImplicationChecksByTransitivity, 300.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=285occurred in iteration=28, InterpolantAutomatonStates: 384, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 28 MinimizatonAttempts, 2492 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 145.0s InterpolantComputationTime, 2853 NumberOfCodeBlocks, 2666 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 3467 ConstructedInterpolants, 0 QuantifiedInterpolants, 15583 SizeOfPredicates, 73 NumberOfNonLiveVariables, 2945 ConjunctsInSsa, 277 ConjunctsInUnsatCore, 59 InterpolantComputations, 16 PerfectInterpolantSequences, 2782/8855 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 1.9s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 111, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 209, TOOLS_POST_TIME: 0.7s, TOOLS_POST_CALL_APPLICATIONS: 42, TOOLS_POST_CALL_TIME: 0.2s, TOOLS_POST_RETURN_APPLICATIONS: 28, TOOLS_POST_RETURN_TIME: 0.2s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 279, TOOLS_QUANTIFIERELIM_TIME: 1.0s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.0s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 401, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 55, DOMAIN_JOIN_TIME: 0.3s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 12, DOMAIN_WIDEN_TIME: 0.1s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 18, DOMAIN_ISSUBSETEQ_TIME: 0.1s, DOMAIN_ISBOTTOM_APPLICATIONS: 111, DOMAIN_ISBOTTOM_TIME: 0.2s, LOOP_SUMMARIZER_APPLICATIONS: 6, LOOP_SUMMARIZER_CACHE_MISSES: 6, LOOP_SUMMARIZER_OVERALL_TIME: 0.3s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.3s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 18, CALL_SUMMARIZER_APPLICATIONS: 28, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME: 0.2s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 1298, DAG_COMPRESSION_RETAINED_NODES: 292, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 04:01:00,026 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-03 04:01:00,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9643f0e0-e48d-4ebb-b33a-b15c33a71326/bin/utaipan-7li7fVZpFI/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample